THE  UNIVERSITY 


OF  ILLINOIS 


LIBRARY 


Presented  by- 
Charles  Brockway  Gibson 
Class  of  1877 
1927 


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Stoi2|®§& 

HOUSE  OF  REPRESENTATIVES. 


57th  Congress, 

2d  > Session . 


Document 

No.  451. 


Professional  Paper  No.  14 


Series  {  D’  Petr°graPhy  and  Mineralogy,  23 
l  E,  Chemistry  and  Physics,  37 


DEPARTMENT  OF  TPIE  INTERIOR 


UNITED  STATES  GEOLOGICAL  SURVEY 


CHARLES  D.  WALCOTT,  Director 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


PUBLISHED  FROM  1884  TO  1900 

WITH  A 


CRITICAL  DISCUSSION  OF  THE  CHARACTER  AND  USE  OF  ANALYSES 


BY 


WASHIN  G  T  O  N 

GOVERNMENT  PRINTING  OFFICE 

1903 


( 


/ 


P-1F^S 


/ —  yj  / 

S  T  ?  ,  U 

■ 

« 


CONTENTS 


Letter  of  transmittal . . 

Preface . 

Introduction . 

The  character  of  rock  analyses . 

General  considerations . 

Representativeness . 

Character  of  the  rock  mass . 

Amount  of  material . . . 

Microscopical  examination . 

Accuracy . 

Possible  errors . , . . 

Completeness . 

Main  constituents . . . 

Minor  constituents . 

Rating  of  analyses . 

Accuracy  . 

Internal  evidence . 

Agreement  with  the  mode . . . 

Summation . . 

External  evidence . 

Analyst . 

Methods . . . 

Indirect  evidence . 

Completeness . 

Rating  adopted  in  the  tables . 

Discussion  of  the  tables . 

Division  into  parts . 

Part  I . 

Part  II  .  ...  . .  . 

Basis  of  arrangement  of  analyses . 

Attempted  use  of  current  petrographic  system . . . 

Adoption  of  the  quantitative  system . 

Quantitative  classification  of  igneous  rocks . 

Construction  of  the  system . 

Nomenclature  of  the  system . 

Comparison  of  old  and  new  nomenclatures . 

3 


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621057 


4 


CONTENTS. 


Discussion  of  the  tables — Continued. 

Quantitative  classification  of  igneous  rocks — Continued.  Page. 

Tabular  exhibit  of  divisions  and  names  of  quantitative  system  (5  tables) .  53 

Reasons  for  arrangement  according  to  the  quantitative  classification .  59 

Distribution  of  rocks  by  new  system .  61 

Comment  on  facts  expressed  by  tables .  62 

Various  features  of  the  tables .  64 

Geographical  arrangement . 64 

Numbering  of  analyses .  65 

Rating  of  analyses .  65 

Results  of  rating  analyses .  65 

Constituents .  67 

Specific  gravity .  68 

Norm .  68 

Correspondence  of  norm  and  mode .  69 

Locality .  69 

Analyst .  70 

Reference .  70 

Author’s  name .  71 

Remarks . . .  71 

Correlation  of  the  qualitative  and  the  quantitative  systems .  72 

From  the  qualitative  point  of  view .  73 

From  the  quantitative  point  of  view .  76 

Meteorites .  81 

Calculation  of  center  points .  (  81 

Introductory .  81 

Persalane .  84 

Perfemane .  88 

Distribution  of  magmas  and  the  average  rock . 100 

Introductory . ; .  100 

The  distribution  of  magmas .  102 

The  average  rock .  106 

First  method .  106 

Second  method .  109 

List  of  abbreviations .  116 

Collection  of  rock  analyses . 121 

Part  I .  121 

Part  II . - .  371 

Glossary . 475 

Prefatory  note  to  indexes .  481 

Index  to  text . 483 

Index  to  new  rock  names  in  Part  I . 486 

Index  to  old  rock  names  in  Parts  I  and  II .  489 

Index  to  localities  in  Parts  I  and  II . 493 


LETTER  OF  TRANSMITTAL. 


Department  of  the  Interior, 

United  States  Geological  Survey, 


Washington,  D.  C. ,  March  20,  1903. 

Sir:  I  have  the  honor  to  transmit  to  you  a  manuscript  entitled  “Chemical 
Analyses  of  Igneous  Rocks  published  from  1884  to  1900,  with  a  critical  discussion 
of  the  character  and  use  of  analyses,”  by  Henry  Stephens  Washington,  and  to  recom¬ 
mend  that  it  be  published  by  the  Survey  as  a  Professional  Paper.  This  work  is  pri¬ 
marily  a  compilation  of  chemical  analyses,  and  is  especially  valuable  to  petrographers 
and  chemists,  for  it  places  in  one  volume  material  gathered  from  a  great  many  scat¬ 
tered  sources.  The  critical  discussion  of  the  value  and  use  of  rock  analyses,  with 
comments  upon  methods  of  analysis  and  a  review  of  the  bearing  of  this  mass  of 
material  upon  rock  classification,  is  also  of  much  importance  to  both  petrographers 
and  chemists.  The  arrangement  of  the  analyses  according  to  the  quantitative  system 
for  the  classification  of  igneous  rocks  permits  one  to  compare  readily  anj^  new 
analysis  with  many  others  of  closely  allied  rocks.  A  work  of  this  kind  is  necessarily 
very  expensive  when  published  by  a  commercial  house,  and  if  so  issued  would  be 
beyond  the  reach  of  many  who  would  desire  to  use  it.  It  is  particularly  appropriate 
that  the  Survey  should  publish  this  work,  because  a  very  large  proportion  of  the 
rock  analyses  here  included  have  been  made  in  the  laboratory  of  the  United  States 
Geological  Survey,  upon  material  which  is  preserved  in  its  petrographic  reference 
collection.  The  use  of  that  collection  will  be  greatly  facilitated  by  this  work. 

V e ry  respectfully , 


Whitman  Cross, 

Geologist  in  Charge  Section  of  Petrology . 


Hon.  Charles  D.  AValcott, 

Director  II.  S.  Geological  Survey. 


5 


' 


I 


i 


P  R  EFACE. 


The  collection  of  chemical  analyses  of  igneous  rocks  here  presented  was  made 
during  a  period  covering  several  years,  for  purposes  of  ready  reference  in  certain 
lines  of  investigation.  In  view  of  the  great  value  of  that  standard  work  of  reference, 
Roth’s  Tabellen,  and  of  the  fact  that  no  such  collection  of  rock  analyses  has  appeared 
since  the  last  installment  of  these  in  1884, a  it  was  thought  that  an  extension  and 
completion  of  these  along  the  lines  of  Roth's  work,  so  as  to  bring  them  down  to  the 
present  day,  would  be  welcome  to  petrographers.  This  seemed  to  be  the  more 
advisable  because  the  years  that  have  elapsed  since  1883  have  witnessed  a  very 
marked  increase  in  the  number,  as  well  as  a  great  improvement  in  the  quality,  of 
chemical  analyses  of  rocks.  These  years  have  also  shown  a  steady  increase  in  the 
importance  of  chemical  analyses  as  applied  to  the  discussion  of  petrological  problems, 
and  a  growing  tendency  to  use  them  as  bases  for  various  systems  of  classification 
which  have  been  proposed. 

The  classificatory  work  on  which  I  have  been  engaged  in  collaboration  with 
Cross,  Iddings,  and  Pirsson,  the  results  of  which  have  recently  appeared,6  was 
also  a  powerful  incentive  to  the  formation  of  the  present  collection.  As  has  been 
stated  by  us,  this  collection  has  been  appealed  to  whenever  possible,  as  a  test  of  our 
proposed  system  of  classification,  and  has  also  formed  to  a  large  extent  the  basis  of 
the  roots  of  the  magmatic  names  suggested. 

The  years  embraced  in  the  present  collection  are  those  from  1884,  that  of  the 
publication  of  the  last  of  Roth’s  Tabellen,  to  1900,  both  inclusive.  The  former  was 
selected  as  a  starting  point  because  Roth  collected  nearly  all  the  analyses  which 
appeared  in  1883;  yet  some  of  those  which  he  overlooked  are  included  in  this  col¬ 
lection.  The  year  1900  seemed  to  be  appropriate  as  the  other  time  limit,  partly  for 
the  reason  that  it  was  the  closing  year  of  the  last  century,  and  partly  because  in  that 
year  appeared  Bulletin  108  of  the  United  States  Geological  Survey,  which  is  the  latest 
publication  embracing  all  the  analyses  of  rocks  made  by  the  chemists  of  that  organi¬ 
zation.  At  the  same  time,  since  the  collection  is  to  a  large  extent  illustrative  of  our 


a  Roth,  J.,  Beitrage  zur  Petrographie  der  plutonischen  Gesteine:  Sitzungsber.  K.  Preuss.  Akad.  Wiss.,  Berlin,  1884. 
^Journal  of  Geology,  Vol.  X,  1902,  p.  555;  also,  Quantitative  Classification  of  Igneous  Rocks,  Chicago,  1903. 


8 


PREFACE. 


proposed  system  of  classification  and  nomenclature,  some  analyses  published  prior  to 
1884  or  subsequent  to  1900  that  are  of  especial  interest  or  importance  have  been 
included,  as  illustrations  of  the  classificatory  divisions,  or  as  forming  the  bases  of  the 
magmatic  names. 

The  endeavor  has  been  made  to  present  all  analyses  of  igneous  rocks,  good,  bad, 
and  indifferent,  that  have  been  published  within  the  time  limits  selected.  For  this 
purpose  I  have  examined  the  most  complete  accessible  files  of  all  known  geological 
survey  publications,  as  well  as  those  of  geological  and  other  scientific  societies,  the 
various  geological  journals,  inaugural  dissertations,  etc. 

It  is  of  course  impossible  that  all  analyses  published  during  the  time  given  should 
have  been  collected.  Some  of  the  less  well-known  publications  of  scientific  societies 
are  inaccessible  in  this  country,  and,  indeed,  at  the  time  the  material  was  collected 
(1900  and  1901)  the  later  publications  of  some  of  the  surveys  and  societies  were,  for 
obvious  reasons,  not  to  be  had  here.  But  it  is  believed  that  the  collection  is  fairly 
complete,  and  that  it  contains  at  an}7  rate  a  record  of  much  of  the  most  useful  and 
noteworthy  chemical  work  of  the  seventeen  years  which  it  represents. 

It  is  hoped  that  occasional  appendixes  will  be  published  later,  in  which,  if  possi¬ 
ble,  many  of  the  analyses  here  overlooked  will  appear.  For  this  purpose  I  shall 
esteem  it  a  favor  to  have  my  attention  called  to  omissions,  and  shall  be  under  great 
obligations  to  those  who  will  be  kind  enough  to  send  separates  of  publications  which 
have  been  overlooked  in  the  present  collection  or  which  may  appear  subsequently  in 
journals  that  are  accessible  here  with  difficulty  or  not  at  all.  It  is  to  be  regretted 
that  the  current  reviews  publish  so  few  of  the  analyses  contained  in  the  papers 
reviewed,  for  these  analyses  are  often  of  the  greatest  interest.  In  the  present  trend 
of  petrology  they  are  often  of  much  more  importance  than  the  microscopical  details, 
which  are  frequently  cited  at  length. 

Although  great  care  has  been  taken  to  guard  against  errors  in  collecting  the 
analyses,  preparing  the  manuscript,  and  reading  the  proof,  mistakes  are  almost 
unavoidable  in  dealing  with  the  mass  of  figures  represented.  I  can  not  venture  to 
hope  that  they  have  been  entirely  eliminated,  and  can  only  express  my  regrets  at 
their  existence,  and  trust  that  my  attention  will  be  called  to  them — a  favor  which  will 
be  very  highly  appreciated. 

The  collection  is  strictly  confined  to  analyses  of  igneous  rocks.  It  was  at  one 
time  intended  to  include  also  those  of  metamorphic  rocks,  but  the  delay  which  this 
plan  would  have  involved  seemed  finall}7  to  render  it  inadvisable,  though  a  fairly 
complete  collection  of  such  analyses  had  also  been  made  in  conjunction  with  those 
here  given.  Sedimentary  rocks  of  all  kinds  have  also  been  omitted,  though  analyses 
of  volcanic  tuffs  are  included.  Analyses  of  serpentines  are  likewise  excluded,  since 
they  are  due  either  to  the  decomposition  of  igneous  rocks,  so  that,  as  explained 


PREFACE. 


9 


elsewhere,  their  analyses  would  fall  under  the  ban  imposed  on  such  altered  material, 
or  are  derived  from  either  metamorphics  or  mineral  masses,  and  hence  fall  outside 
the  scope  of  the  present  collection. 

It  was  hoped  for  a  time  that  analyses  of  meteorites  could  be  given;  but  owing  to 
the  fact  that  no  adequate  collection  of  the  analyses  of  these  bodies  has  yet  been  made, 
this  would  have  involved  a  search  through  the  voluminous  and  widely  scattered  lit¬ 
erature  published  concerning  them  since  the  commencement  of  their  study.  Such 
a  proceeding  would  have  postponed  indefinitely  the  appearance  of  this  work,  and 
therefore,  as  well  as  in  view  of  the  fact  that  they  form  the  subject  of  special  study, 
the  project  was  abandoned.  I  am  informed,  furthermore,  that  such  a  collection  is 
already  being  undertaken  by  another,  so  that  it  is  to  be  hoped  that  this.serlous  lacuna 
will  shortly  be  tilled. 

It  may  seem  to  many  petrographers  who  are  acquainted  with  the  chemical  analy¬ 
sis  of  rocks  that  certain  portions  of  this  subject  have  been  gone  into  with  unnecessary 
detail,  or  that  many  truths  are  stated  which  are  obvious  to  any  one  conversant  with 
the  subject.  That  this  is  true  to  a  large  extent  is  admitted,  but  it  must  be  remem¬ 
bered  that  the  greater  part  of  the  text  which  is  devoted  to  this  subject  has  been 
written  with  the  nonanalvtical  reader  in  mind,  to  whom  much  of  what  is  here  given 
will  undoubtedly  prove  novel.  As  will  be  evident  from  a  perusal  of  the  text  and 
from  a  study  of  the  analyses  here  presented,  there  are  far  too  many  petrographers 
to  whom  the  principles  and  methods  of  chemical  analysis  are  as  a  sealed  book,  and  in 
their  case  I  can  only  feel  that  if  I  have  erred  it  has  been  on  the  side  of  too  little 
explicitness  or  detail. 

The  new  terms  and  names  used  are  those  proposed  in  connection  with  the  recently 
published  quantitative  classification,  and  their  meanings  will  be  found  in  the  glossaiy 
given  on  pages  479-483.  No  apology  is  offered  for  their  introduction,  since  in  mamr 
cases  they  are  the  only  terms  available  to  express  the  ideas  which  it  is  desired  to 
convey,  at  least  without  the  use  of  much  longer  or  circumlocutory  phrases,  and  it 
was  desired  as  well  to  take  this  opportunity  of  making  them  more  familiar  to 
petrographers. 

The  progress  of  the  work  has  been  greatly  facilitated  by  the  kindness  of  many 
friends,  to  whom  it  is  a  pleasure  to  express  obligations.  I  am  especially  indebted  to 
the  officials  of  the  libraries  of  Yale  and  Columbia  universities  and  of  the  United 
States  Geological  Survey,  who  courteously  afforded  me  the  fullest  facilities  in  the 
examination  of  serial  and  other  publications.  W ithout  their  assistance  this  collection 
could  not  have  been  made  satisfactorily  complete. 

I  am  also  indebted  to  several  friends,  among  whom  I  may  mention  especially 
Profs.  J.  F.  Kemp  and  J.  B.  Harrison,  for  several  unpublished  analyses,  which  they 
kindly  allowed  me  to  insert  in  the  tables.  To  my  friends  Dr.  Cross,  Professor 


10 


PREFACE. 


Iddings,  Professor  Pirsson,  and  Dr.  Hillebrand  1  am  grateful  for  many  valuable  sug¬ 
gestions  and  criticisms.  Nearly  the  whole  of  the  manuscript  of  the  text  has  been 
submitted  to  my  colleagues  in  the  new  classilication,  so  that  the  views  here  expressed 
may  be  regarded,  in  general,  as  having  their  indorsement,  and  as  expressing  the 
ideas  of  all  four. 

Last,  but  by  no  means  least,  I  must  express  my  sense  of  deep  obligation  to  the 
Hon.  C.  D.  Walcott  for  his  kindness  in  allowing  the  work  to  appear  as  a  Survey  pub¬ 
lication.  It  is  gratifying  to  feel  that  this  hospitality  is  in  part  repaid  by  the  incon¬ 
testable  evidence  the  present  volume  affords  of  the  preeminent  place  in  rock  analysis 
that  is  held  by  the  organization  of  which  he  is  the  Director. 

Finally,  I  must  express  my  regret  at  the  dela}7  in  the  appearance  of  the  work, 
which  is  published  more  than  two  years  after  the  limiting  date  of  the  collection.  1 
can  only  plead  in  extenuation  the  pressure  of  other  work,  especially  that  in  connec¬ 
tion  with  the  new  system  of  classification,  and  trust  that  the  time  which  has  elapsed 
has  but  added  to  whatever  worth  the  volume  may  possess. 


1 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


By  H.  S.  Washington. 


INTRODUCTION. 

In  the  first  two  or  three  decades  of  the  last  century,  when  the  study  of  rocks  as 
such  was  being  differentiated  from  that  of  minerals  and  of  rock  terranes — that  is, 
when  the  science  of  petrogaphy  was  in  its  infancy — little  attention  was  paid  to  their 
chemical  features.  It  is  true  that  a  number  had  been  analyzed,  but  these  were  for 
the  most  part  rocks  that  were  of  such  a  character  as  to  lead  the  investigator  of  those 
early  daj^s  to  consider  them  as  minerals,  as  was  the  case  with  the  first  described 
lherzolite  and  wehrlite.  In  contradistinction  to  the  individually  well-defined  min¬ 
erals,  rocks  were  regarded  as  merely  aggregates  of  minerals,  in  presumably  fortui¬ 
tous  combinations,  and  lacking  that  definiteness  or  constancy  of  composition  in  one 
mass  or  in  different  masses  which  would  justify  their  chemical  study  as  a  whole. 
As,  however,  they  became  more  and  more  the  subjects  of  special  research,  beginning 
with  the  earliest  investigations  of  Cordier,®  a  knowledge  of  their  chemical  composi¬ 
tion  assumed  gradual^  increasing  interest.  The  great  importance  of  this  side  of 
the  study  of  rocks  was  first  clearly  recognized  by  Abich/  who  pointed  out,  as  early 
as  1841,  the  necessity  of  a  knowledge  of  their  chemical  composition  for  the  solution 
of  such  problems  as  their  origin,  mode  of  formation,  and  connection  with  the 
interior  of  the  earth,  as  well  as  the  value  of  a  comparison  of  their  analyses  as  a 
proper  basis  for  their  classification  and  nomenclature.  To  him,  therefore,  is  due  the 
credit  of  introducing  the  chemical  composition  of  rocks  as  a  basis  for  their  classifi¬ 
cation;  though  the  good  influence  of  this  suggestion  for  their  right  understanding 
was  largely  nullified  by  the  coincident  use  of  the  feldspars  alone  as  one  of  the  main 
factors  of  classification/  an  idea  which  has  had  a  deplorably  retarding  influence  on 
the  development  of  systematic  petrography  for  many  }rears,  and  which,  even  at  the 
present  da}%  holds  many  systematists  firmly  in  its  grasp. 


«Cf.  Cross,  Whitman,  Jour.  Geol.,  Vol.  V,  1902,  p.  352. 
b  Abich,  H.,  Natur  der  Vulkanische  Bildungen,  Braunschweig,  1841,  p.  v. 
c Cross,  Whitman,  loc.  cit.,  p.  362. 

11 


12 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


For  about  thirty  years  alter  Abides  publication  chemical  analyses  occupied  a 
prominent  position  in  petrographical  discussions,  being  employed  largely  for  the 
purpose  of  determining  the  mineral  composition  of  rocks.  Abich,  in  the  work  just 
cited,  had  adopted  as  a  means  to  this  end  the  ratio  of  the  oxygen  of  the  bases  to  that 
of  the  silica,  and  was  thus  enabled  to  calculate  approximately  their  mineral  composi¬ 
tion,  as  Rammelsberg  and  others  had  also  done. 

A  modification  of  this  method,  known  as  the  “Oxygen-ratio”  (Sauerstoffquo- 
tient),  was  introduced  by  Bischoff,®  and  was  long  employed  for  the  correlation  of 
rock  analyses  and  for  the  investigation  of  the  question  whether  the  various  oxides 
were  present  in  rocks  in  stoichiometric  proportions  or  not.  This  ratio  is  obtained, 
for  ant"  given  rock,  Ir^  dividing  the  amount  of  the  oxj^gen  in  all  the  bases  by  that 
present  in  the  silica,  and  was  supposed  to  be  characteristic  of  different  broad  groups. 
This  supposition  was  eventually  found  to  be  unwarranted,  as  rocks  of  very  diverse 
chemical  or  mineralogical  characters  were  shown  to  have  the  same  oxygen  ratio.  It 
is  noteworthy  that,  although  he  himself  pointed  out  this  and  other  grave  objections 
to  the  use  of  this  ratio,6  Roth  gives  it  in  connection  with  the  separate  analyses  in  all 
his  tables,  even  in  the  last  one,  published  in  1884.  He  explains  this  by  sa}Tingc  that 
it  is  done,  “only  in  the  absence  of  a  better  means  of  comparison,  as  well  as  to  make 
it  possible  to  compare  the  older  and  newer  analyses.” 

It  was  also  shown  by  Roth  and  others  that  rocks  could  not  be  referred  to  simple 
chemical  formulas;  in  other  words,  that  the  oxides  were  not  present  in  stoichiometric 
proportions.  This,  indeed,  is  one  of  the  most  important  of  the  results  arrived  at  by 
Roth  from  a  study  of  the  analyses  collected  by  him,  and  first  published  in  1861. 

Shortly  after  Bischoff’s  suggestion  of  an  oxygen  ratio  there  appeared Bunsen’s 
well-known  hypothesis  of  the  formation  of  igneous  rocks  b}r  the  mixture  of  two 
supposed  original  magmas— the  normal  trachytic  and  the  normal  pyroxenic.  For 
the  application  or  the  discussion  of  this  hypothesis,  analyses  were,  of  course,  all- 
important.  Founded,  as  the  hypothesis  was,  on  limited  and  totall}T  insufficient 
data,  it  had  to  yield  to  the  evidence  furnished  by  the  many  analyses  to  which  it 
had  given  rise. 

With  the  abandonment e  of  this  view  of  the  genesis  of  igneous  rocks,  and  owing 
to  the  coincident  introduction  of  the  microscope  in  the  early  seventies,  analyses  lost 
much  of  their  importance.  Though  they  were  still  published,  it  is  evident  that  they 
were,  as  a  rule,  inserted  perfunctorily  in  petrographical  writings,  in  obedience  to 
custom,  as  ornamental  embellishments.  Little  or  no  stress  was  laid  on  them,  and  the 
chief  efforts  of  the  petrographer  were  devoted  to  the  elucidation  of  the  purely  min¬ 
eralogical  and  textural  characters  of  the  rocks  described. 


a  Bischoff,  G.,  Lehrb.  Cheni.  Geol.,  Vol.  II,  1849,  p.  631. 
b  Roth,  J.,  Gesteins-Analysen,  Berlin,  1861,  p.  x. 
c  Roth,  J.,  Beitr.  Petrog.  Pluton.  Gest.,  1869,  p.  87. 


<1  Bunsen,  R.,  Pogg.  Ann.,  Vol.  LXXXIII,  1851,  p.  197. 
e  Cf.  Zirkel,  Lehrbuch,  Vol.  I,  1893,  pp.  658  et  seq. 


CRITICAL  VALUATION  OF  ANALYTICAL  WORK. 


13 


'  The  microscope  poured  a  flood  of  light  upon  the  mineralogical  constitution  as 
well  as  the  texture  of  rocks,  and  rendered  easy  and  certain  of  attainment  results 
which  by  the  older  methods,  based  on  analysis, >had  been  attained  only  with  difficult}' 
or  not  at  ali.  At  the  same  time  the  collapse  of  Bunsen’s  hypothesis  left  for  the  time 
being  no  general  theory  of  rock  formation  and  genesis  in  its  place,  Durocher’s 
liquation  hypothesis n  and  Roth’s  first  suggestion  of  differentiation b  attracting  little 
attention.  Petrographers  were  too  busy  collecting  and  assimilating  the  vast  mass  of 
facts  discovered  through  the  microscope  to  be  able  to  devote  much  of  their  energies 
to  theoretical  studies. 

With  the  opening  of  the  last  decade  of  the  nineteenth  century,  however,  there 
arose  an  interest  in  the  theoretical  side  of  petrology  in  contradistinction  to  the 
descriptive  petrography  which  had  hitherto  prevailed  since  1870.  This  was  started 
by  the  work  of  Lagorio,  Teall,  Rosenbusch,  Brogger,  Iddings,  and  others,  and  since 
that  time  analyses  have  occupied  a  more  and  more  prominent  place  in  petrological 
discussions.  They  are  no  longer  ornamental  adjuncts,  but  essential  parts  of  most 
petrographical  publications,  on  which  much  of  the  discussion  hangs,  and  from  which 
the  most  important  conclusions  are  drawn. 

The  crystallographic  and  optical  properties  of  the  constituent  minerals  and  the 
details  of  texture  are  no  longer  the  main  subjects  of  investigation,  but  are  finding 
their  place  with  the  chemistry  of  rocks  and  the  broad  and  far-reaching  studies  based 
on  this.  The  microscope  is  sharing  the  throne  with  the  balance. 

This  is  as  it  should  be,  since  exclusive  attention  to  one  aspect  tends  always  to 
obscure  the  goal  toward  which  all  science  is  striving — the  understanding  of  the 
“how”  and  the  “  why”  of  things  as  they  are — by  temporarily  setting  up  objects  of 
interest  of  subsidiary  importance.  These  subsidiary  aims  all  have  their  use  in 
advancing  the  progress  of  the  science,  but  it  must  not  be  forgotten  that  they  some¬ 
times  lead  into  very  devious  paths,  often  of  overspecialization,  and  that  it  is  by 
keeping  our  forces  moving  forward  together  along  all  the  lines  of  approach  that  we 
shall  most  quickly  and  surely  reach  our  destination. 


THE  CHARACTER  OF  ROCK  ANALYSES. 


GENERAL  CONSIDERATIONS. 

With  the  growing  interest  in  rock  analyses  it  is  of  the  utmost  importance  that 
they  be  used  intelligently,  not  onty  as  to  their  application  in  theoretical  discussions, 
but,  which  is  of  especial  interest  here,  as  regards  a  just  appreciation  of  their  character 
and  applicability  to  the  purpose  in  view. 

It  is  a  somewhat  surprising  and,  it  must  be  said,  a  rather  saddening  fact  that 
the  critical  judgment  of  petrographers  in  general  as  regards  rock  analyses  seems 


aDurocher,  Ann.  des  Mines,  Vol.  XI,  1857,  p.  217. 


b  Roth,  J.,  Gesteins-Analysen,  1861,  p.  xix. 


14 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


to  be  in  abeyance  or  wholly  lacking.  There  is  among  them  now,  as  there  seems 
always  to  have  been  to  some  extent,  a  tendency  to  place  implicit  confidence  in  the 
results  of  analytical  work — to  accept  readily  whatever  figures  the  analyst  may 
furnish,  with  scarcely  ever  an  attempt  at  a  critical  estimate  of  the  worth  of  the 
analysis  or  a  comparison  of  it  with  the  chemical  character  of  the  rock  itself  as 
revealed  by  the  microscope.  It  seems  to  be  taken  for  granted  by  nearly  all  petrog- 
raphers  that  the  analyst,  like  the  proverbial  king,  can  do  no  wrong.  This  applies, 
not  to  the  personal  good  faith  of  the  analyst,  but  to  the  analytical  processes  which, 
possibly  because  they  belong  to  one  of  the  exact  sciences,  are  for  the  most  part 
tacitly  assumed  by  the  petrographer  to  be  infallible. 

It  is  noteworthy  that  this  attitude  of  mind  obtains,  not  only  among  beginners, 
but  among  the  foremost  workers  in  the  science.  There  are,  it  is  true,  some  instances 
of  the  application  of  expressed  criteria  in  the  selection  of  analyses  in  well-known 
papers,  but  in  all  these  cases  the  criteria  applied  are  few,  and  quite  inadequate  to  the 
purpose,  being  confined,  for  the  most  part,  to  the  freshness  of  the  robk.  In  few 
cases  does  there  seem  to  be  any  recognition  of  the  difficulties  and  uncertainties  of 
analytical  work  or  any  practical  acquaintance  with  its  methods. 

It  goes  without  saying  that  this  way  of  regarding  analyses  is  totally  at  variance 
with  the  best  interests  of  the  science.  Analyses  constitute  the  basis  of  much  of  the 
investigations  and  discussions  with  which  petrographers  and  petrologists  must  occupy 
themselves,  and  it  is  surely  not  the  part  of  wisdom  to  erect  elaborate  structures  on 
foundations  of  wdiose  stability  and  careful  workmanship  we  are  not  assured.  It  will 
be  time  saved  in  the  end,  and  the  superstructure,  however  well  built  in  itself,  will 
have  a  far  better  chance  of  withstanding  the  ravages  of  time  and  the  attacks  of  critics 
if  all  the  rotten  and  unsound  blocks  in  the  foundation  are  removed  and  onl}T  the  best 
and  strongest  of  material  retained. 

A  consequence  of  this  unquestioning  confidence  in  the  results  of  analytical  work 
is  that  it  is  often  intrusted  to  a  student  in  chemistry,  one  with  little  or  no  experience 
in  the  analysis  of  rocks,  and  with  no  appreciation  of  the  complexities  and  difficulties 
inherent  in  this  department  of  quantitative  analysis.  That  the  results  furnished  by 
such  inexperienced,  and  to  this  extent  incompetent,  analysts  should  be  received  with 
the  greatest  caution,  is  a  truism  to  anyone  acquainted  by  actual  experience  with  the 
difficulties  and  dangers  of  rock  analysis.  But  Hillebrand  a  and  Pirsson b  have  expressed 
so  clearly  and  concisely  the  views  which  I  hold  that  I  can  do  no  better  than  refer  to 
them.  It  is  certainly  remarkable  and  significant  that  in  petrography  alone  of  all  the 
sciences  the  most  difficult  and  intricate  work  is  intrusted  to  novices,  and  that  their 
results  are  accepted  by  nearly  all  with  the  same  confidence  that  is  given  to  the  work 
of  an  experienced  person. 


a  Hillebrand,  W.  F.,  Bull.  U.  S.  Geol.  Survey  No.  148,  1897,  p.  16. 

6 Pirsson,  L.  V.,  Twentieth  Ann.  Rept.  U.  S.  Geol.  Survey,  1900,  Pt.  Ill,  p.  578. 


CRITICAL  VALUATION  OF  ANALYTICAL  WORK. 


15 


This  general  laxity  among  petrographers  as  regards  the  quality  of  rock  analyses 
is  only  too  painfully  evident  in  the  present  collection.  There  is  to  be  found  an 
astonishingly  large  proportion  of  poor  work,  much  of  it  of  such  a  character  that  it 
would  seem  that  even  a  tyro  in  analysis  would  reject  it  as  hopelessly  inadequate  for 
use.  Analyses  are  given  with  summations  over  103  or  below  98.  Analyses  of  leucite- 
basanite  exist  so  low  in  alkalies  that  10  or  more  per  cent  of  quartz  must  be 
present,  even  though  in  the  calculation  all  the  potash  is  assigned  to  orthoclase  and 
all  the  soda  to  albite.  Analyses  of  rocks  rich  in  olivine  are  found  which  show 
30  per  cent  of  alumina  and  only  small  amounts  of  ferrous  iron  and  magnesia.  In 
certain  cases  of  alkalic  rocks  the  alkalies  have  not  been  separately  determined. 
Rocks  with  abundant  segirite  contain  no  ferric  iron,  and  those  with  sodalite  no 
chlorine,  to  judge  from  the  figures  furnished.  Indeed  I  may  say  that  some  of  the 
most  depressing  hours  of  my  life  have  been  those  spent  in  collecting  and  arranging 
the  ‘‘poor”  and  “bad”  analyses  here  given,  especially  those  grouped  together  in 
Part  II  of  the  collection.  They  represent  a  vast  amount  of  misdirected  and  wasted 
energy,  and,  in  man}7  cases,  have  served  as  foundations  for  much  logical  and  other¬ 
wise  excellent  reasoning,  which  has  been  almost  wholly  vitiated  by  the  worthlessness 
of  its  basal  data.  This  would  often  be  ludicrous  were  it  not  pathetic. 

The  publication  and  general  acceptance  of  all  this  worthless  analytical  matter 
reveals  the  weakest  side  of  petrography,  and  goes  far  toward  showing  why,  up  to 
the  present,  no  classification  of  igneous  rocks  based  on  purely  chemical  or  quanti¬ 
tatively  mineral  characters  has  been  proposed,  or  would  be  likely  to  receive  the 
general  assent  of  petrographers. 

The  chief  reason  for  this  low  standard  of  criticism  on  the  part  of  petrographers 
as  regards  analysts  and  analyses  would  seem  to  be  that,  while  all  of  them  are  neces¬ 
sarily  conversant  with  chemistry  from  the' theoretical  side,  few  have  much  knowledge 
of  the  theory  of  quantitative  analysis  or  much  experience  in  its  methods.  The  fact  is 
not  generally  recognized  that  the  complete  and  adequate  analysis  of  an  igneous  rock 
is  one  of  the  most  complex  and,  in  some  respects,  one  of  the  most  difficult  problems 
of  analytical  science,  far  beyond  the  capabilities  of  a  novice,  and  demanding  not  only 
chemical  knowledge  and  manipulative  skill,  but  often  the  exercise  of  considerable 
judgment  derived  from  experience  in  solving  the  perplexing  problems  which  may 
present  themselves." 

With  the  greatly  increased  importance  of  chemical  analyses  at  the  present  time, 
it  can  justly  be  considered  that  the  ability  to  make  an  accurate  and  fairly  complete 
chemical  analysis  of  an  igneous  rock  should  form  an  essential  part  of  the  training 
and  equipment  of  every  petrographer.  It  is  only  by  such  knowdedge  that  one  is 
able  to  judge  at  first  hand  of  the  true  value  of  an  analysis,  to  see  where  errors  have 


aCf.  Hillebrand,  op.  cit.,  p.  16. 


16 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


possibly  crept  in,  and  to  discriminate  between  what  is  good  and  worthy  of  use  and 
what  is  bad  and  to  be  rejected. 

In  view  of  this  state  of  affairs  it  will  be  pertinent  to  discuss  at  some  length  the 
qualifications  which  go  to  make  a  good  analysis,  the  theoretical  and  practical  criteria 
by  which  analyses  may  be  judged,  and,  in  a  rough  way,  the  estimation  of  the  weight 
which  may  be  allowed  any  given  analysis  in  theoretical  discussions.  Indeed,  one  of 
the  main  objects  of  the  present  publication  is  to  call  the  attention  of  petrographers 
in  general  to  this  state  of  affairs,  so  that  they  may  realize  more  clearly  the  pressing 
need  for  reform  and  the  necessity  for  a  just  appreciation  of  the  value  attaching  to 
good  analytical  work  and  of  the  dangers  incident  to  the  use  of  poor  analyses.  There 
is  undoubtedly  at  the  present  time  a  marked  improvement  in  this  respect,  but  so 
many  recent  instances  of  lack  of  judgment  or  criticism  in  the  publication  of  analyses 
might  be  cited  that  the  need  is  apparent,  even  now,  for  a  free  discussion  of  the  subject. 

I  realize  fully  that  this  is  a  delicate  task,  and  difficult,  if  not  impossible,  to  do 
without  causing  ill  feeling.  This  difficult}"  is,  of  course,  inevitable  in  any  discussion 
involving  the  frank  statement  of  weaknesses  or  errors.  I  have  therefore  endeav¬ 
ored  to  make  the  discussion  as  impersonal  as  possible,  though  some  references  as 
illustrations  have  been  unavoidable.  Fortunately,  having  myself  done  considerable 
analytical  work,  I  can  only  too  often  cite  my  own  analyses  as  instances  of  what  is 
to  be  avoided. 

REPRESENTATIVENESS. 

CHARACTER  OF  THE  ROCK  MASS. 

An  analysis  of  an  igneous  rock  is  of  value  in  direct  ratio  as  it  fulfills  two  con¬ 
ditions:  that  the  specimen  analyzed  is  representative  of  the  rock  mass,  and  that 
the  analysis  itself  is  accurate  and  complete  in  its  determination  of  the  constituents 
present.  We  may  consider  these  two  factors  in  the  order  stated. 

The  representative  character  of  the  specimen  depends  partly  on  the  character  of 
the  rock  mass  and  partly  on  the  amount  of  material  taken. 

If  the  mass  be  uniform,  or  if  a  single  uniform  facies  be  the  object  of  investiga¬ 
tion,  two  courses  of  procedure  are  possible.  A  single  representative  specimen  from 
one  locality  may  be  selected  for  analysis,  or  pieces  of  several  specimens  collected 
from  different  parts  of  the  mass  may  be  taken,  pulverized,  and  mixed,  and  the 
analysis  made  of  this  mixture. 

Of  these  the  latter  labors  under  the  disadvantage  that  a  check  by  means  of 
reexamination  by  others  will  be  impossible,  and,  furthermore,  the  uncertainty  will 
always  exist  that  the  mixture  of  several  specimens  really  represents  the  composition 
of  the  whole  better  than  does  a  single  specimen. 

In  the  great  majority  of  cases  it  is  by  far  the  best  plan  to  select  a  definite 
locality,  preferably  one  which  is  of  a  permanent  nature  and  not  likely  to  be  lost 


CHARACTER  OF  ROCK  MASS. 


17 


through  building  or  other  operations,  the  rock  of  which  can  be  considered  repre¬ 
sentative  of  the  whole  mass,  and  make  the  analysis  of  a  specimen  from  this. 

If  there  should  be  doubts  as  to  the  general  uniformity  of  the  whole  mass,  it  is 
better  to  make  several  analyses  from  different  parts,  even  though  this  involves  con¬ 
siderably  more  analytical  labor,  since  a  much  more  detailed  knowledge  is  thus 
gained,  and  important  features  which  may  otherwise  be  overlooked  may  be  rendered 
evident. 

In  the  case  of  a  heterogeneous  mass,  such  as  a  stock  or  dike  with  marginal 
facies,  it  is  likewise  always  the  wisest  plan  to  have  separate  analyses  made  of  the 
different  facies,  even  though  the  determination  of  the  character  of  the  mass  as  a 
whole  be  the  only  object  in  view. 

The  decision  as  to  the  representative  character  of  the  specimen  selected  must  be 
left  to  the  collector,  and  it  would  seem  natural  that  a  petrographer  who  had  the 
analysis  of  a  rock  in  view,  or  who  thought  the  results  might  be  of  value,  would 
carefully  consider  this  question  in  the  field  and  select  his  material  according^.  The 
evidence  is  conclusive,  however,  that  the  specimen  analyzed  has  often  been  collected 
with  no  reference  to  this  point,  this  fact  greatly  diminishing  the  value  of  the 
analytical  work  afterwards  expended  on  it. 

In  connection  with  this  subject  the  question  naturally  arises  whether  rock  masses 
are  indeed  so  uniform  in  character  that  any  single  specimen  will  be  truly  represen¬ 
tative  of  the  whole,  and  whether  specimens  from  different  parts  of  an  apparently 
uniform  mass,  even  if  close  together,  may  not  differ  widely  in  composition.  A  full 
treatment  of  this  fundamentally  important  topic  is  impossible  here,  but  the  outcome 
of  such  a  discussion  would  be  that,  though  the  latter  statement  undoubtedly  applies  in 
the  case  of  modally  or  normatively  (but  not  texturally)  eutaxitic  or  schlieric  masses, 
yet  a  rock  mass  which  is  megascopically  and  microscopically  uniform  will  furnish,  by 

proper  selection,  specimens  that,  if  examined  by  two  or  more  competent  analysts 

< 

and  by  reliable  methods,  will  jdeld  results  that  are  sensibly  identical.  In  other 
words,  in  the  terms  of  the  new  classification,  they  would  fall  in  the  same  subrang, 
or  very  close  to  the  same  border  line. 

No  investigation  appears  to  have  been  made  specially  to  decide  this  point,  but  a 
number  of  examples  are  furnished  by  the  present  collection  which  bear  out  the 
conclusion  stated.  Among  them  may  be  mentioned  the  analyses  of  the  Butte 
grano-harzose-amiatose  (granite)  (Nos.  1,  2,  and  3),  the  phyro-miaskose  (phono- 
lite)  of  the  Black  Hills  (Nos.  8  and  9),  the  grano-essexose  (essexite)  of  Salem  Neck 
(Nos.  2  and  3),  the  phlegrose-nordmarkose  (solvsbergite)  of  Coney  Island  (phlegrose 
No.  4  and  nordmarkose  No.  3),  and  the  liparose  (keratophvre)  of  Marblehead 
Neck  (Nos.  12  and  13). 

14128— No.  14—03 - 2 


18 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


The  specimens  should,  of  course,  be  taken  from  fresh,  unaltered  rock,  since  omy 
thus  do  they  represent  the  chemical  character  of  the  magma.  In  some  cases,  how¬ 
ever,  absolutely  fresh  material  is  not  to  be  had;  but  if  there  be  more  than  a  very 
slight  degree  of  alteration  an  elaborate  analysis  is  not  called  for.  All  that  we  can 
hope  to  obtain  from  an  analysis  of  such  a  rock  is  a  general  idea  of  its  magmatic 
character,  and  while  the  determination  of  the  main  constituents  should  be  made  with 
accuracy,  it  will  scarcely  be  worth  while  to  determine  the  minor  ones,  unless  for 
special  purposes,  such  as  the  study  of  rock-weathering.  If  the  alteration  is  slight 
the  proportions  of  the  main  oxides  will  not  be  veiy  much  changed,  but  those  of  the 
minor  ones  will  be  relatively  much  more  so. 

AMOUNT  OF  MATERIAL. 

The  determination  of  the  amount  of  material  that  will  adequately  represent  the 
mass  is  a  matter  of  great  importance  and  deserves  the  careful  consideration  of  the 
petrographer  and  the  analyst.  For  actual  analysis  at  least  10  grams  of  pulverized 
rock  should  be  available,  but,  in  view  of  the  possibility  of  the  redetermination  of 
some  or  all  of  the  constituents  or  the  determination  of  some  for  which  large  por¬ 
tions  are  needed,  it  is  well  to  have  20  or  30  grams.®  No  definite  rule  can  be  laid 
down  as  to  the  amount  that  should  be  taken,  which  depends  on  the  granularity  of  the 
rock  and  whether  it  be  porphvritic  or  not.  In  the  case  of  fine-  or  medium-grained 
aphanitic  or  glassy  rocks,  which  are  not  porphyritic  or  are  only  finely  so,  a  few 
chips,  amounting  to  30  or  10  grams,  will  be  quite  sufficient.  Of  coarse-grained 
rocks,  or  those  which  are  coarsely  porphyritic,  much  more  will  be  needed,  the  amount 
being  dependent  on  the  coarseness  of  grain.  For  nearly  all  ordinarily  coarse-grained 
rocks,  or  those  in  which  the  phenocrysts  are  less  than  an  inch  in  diameter,  an  ordi¬ 
nary  small  hand  specimen,  or  even  a  smaller  fragment,  will  be  quite  sufficient,  the 
size  being  determined  by  the  judgment  of  the  petrographer.  When  the  rock  is 
abnormally  coarse,  as  in  some  pegmatites,  nephelite-syenites,  etc.,  much  more  must 
be  taken,  often  several  pounds.  In  some  rare  cases  a  large  rock  surface  must  be 
measured  to  determine  the  relative  amounts  of  the  various  minerals,  and  proportion¬ 
ate  amounts  of  these  must  be  taken  and  mixed  for  analysis.  This  last  possibility, 
fortunately,  is  of  rare  occurrence,  and  an  analysis  made  of  such  material  must  be 
regarded  as  only  approximate  at  best. 

When  more  than  30  grams  or  so  of  material  is  used  it  is  not  necessary  to  pul¬ 
verize  the  whole,  for  a  sample  may  be  obtained  by  making  successive  crushings  and 
quartering,  as  in  assay  work.  Care  must  be  taken  to  do  this  properly  and  system¬ 
atically,  according  to  methods  given  in  any  treatise  on  assaying,  and  reference  may  be 
made  here  to  a  paper  by  Mr.  S.  A.  Reed,  which  discusses  the  theory  of  the  matter.6 


«Cf.  Hillebrand,  Bull.  U.  S.  Geol.  Survey  No.  148,  1897,  p.  C3. 
i> Reed,  S.  A.,  School  of  Mines  Quart.,  Vol.  VI,  1885,  p.  351. 


ACCURACY  OF  ROCK  ANALYSES. 


19 


It  should  be  noted  that  the  whole  of  the  small  amount  of  chips  or  sample 
obtained  by  quartering-  must  be  pulverized  and  used  for  analysis.  The  rock-making 
minerals  ditfer  so  greatly  in  brittleness  that  if  only  a  portion  of  the  sample  be  pul¬ 
verized  this  will  not  represent  the  true  average  composition,  for  the  more  brittle 
minerals,  as  quartz  and  the  feldspars,  will  be  first  reduced  to  powder,  while  the 
tougher  ones,  as  hornblende,  pyroxene,  and  biotite,  will  take  more  crushing  and 
grinding.  If,  therefore,  the  last  portions,  which  do  not  pass  easily  through  the  silk 
sieve,  are  rejected,  the  analysis  will  show  a  slightly  more  salic  composition  than 
exists  in  fact. 

On  the  other  hand,  owing  to  the  same  fact,  the  fine  dust  lost  during  the  opera¬ 
tions  of  crushing,  sifting,  and  grinding  will  be  composed  chiefly  of  salic  minerals,  so 
that,  strictly  speaking,  all  rock  analyses  are  slightly  more  femic  than  they  should 
properly  be,  though  the  error  must  be  of  very  slight  importance.®  At  any  rate,  it 
seems  to  be  unavoidable. 

MICROSCOPICAL  EXAMINATION. 

A  microscopical  examination  of  the  rock  in  thin  section  should  always  precede 
the  chemical  analysis.  This  not  only  reveals  clearly  the  character  of  the  rock  as 
regards  general  composition  and  freshness,  but  often  furnishes  invaluable  indications 
as  to  what  minor  constituents,  such  as  ZrO,,  P205,  SOs,  Cl,  etc.,  are  present. 

The  petrographer  can  thus  indicate  to  the  analyst  which  of  the  minor  constituents 
are  to  be  estimated  and  those  for  which  it  is  not  worth  while  to  look.  Some  of  the 
main  analytical  processes  may  also  be  modified  and  shortened  by  a  knowledge  of  the 
general  character  of  the  rock,  and  in  both  these  ways  a  great  amount  of  useless  labor 
will  often  be  saved  to  the  careful  and  thorough  but  nonpetrographical  analyst,  who, 
in  the  absence  of  such  indications,  may  spend  much  time  looking  for  constituents 
which  are  absent,  in  the  conscientious  endeavor  to  have  his  analysis  complete. 

ACCURACY. 

Assuming  that  the  sample  analyzed  is  representative  of  the  rock  mass,  the  degree 
of  correspondence  between  the  figures  yielded  by  the  analysis  and  the  true  compo¬ 
sition  of  the  rock  is  dependent  on  two  factors — its  accurac}7  and  its  degree  of 
completeness. 

By  accuracy  is  meant  the  degree  of  precision  with  which  the  constituents  sought 
for  have  been  determined,  quite  apart  from  the  fact  whether  or  not  all  those  present 
have  been  determined  or  separated  one  from  another.  The  accuracy  of  an  analysis, 

a  The  only  instance  known  to  me  where  this  has  been  especially  investigated  is  that  in  S.  Zaleski’s  study  of  the 
amount  of  quartz  in  granites  (Tschermak’s  Mineral.  Mittheil.,  Vol.  XIV,  1895,  p.  350).  He  shows  by  determinations  of 
silica  that  the  dust  produced  in  the  pulverization  of  granites  is  notably  richer  in  feldspar  relatively  to.  quartz  and  dark 
minerals  than  the  coarser  portion  of  the  powder. 


20 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


which  may  be  discussed  apart  from  its  completeness,  depends  on  the  personal  ability 
of  the  analyst  to  make  the  analysis  and  on  the  reliability  and  adequacy  of  the  meth¬ 
ods  employed. 

The  factor  of  the  analyst  has  already  been  touched  on  in  speaking  of  the  practice 
of  entrusting  rock  analyses  to  students,  and  the  obvious  truth  that  the  personal 
factor  is  a  most  important  one  in  the  making  of  analyses  need  only  be  stated  here. 
Thus  the  work  of  a  trained  and  experienced  man  will  be,  presumably,  of  far  higher 
character  than  that  of  a  beginner  publishing  his  first  analyses  in  an  inaugural  disser¬ 
tation,  or  that  of  a  student  in  chemistry  to  whom  the  analysis  of  a  rock  has  been 
given  for  practice.  It  is  true  that  the  man  of  experience  may  not  be  a  good  analyst, 
or  may  be  hampered  by  poor  methods  or  reagents,  and  conversely  the  work  of  the 
beginner  may  be,  and  often  is,  of  very  good  quality;  but  the  fact  remains  that  the 
latter  will  not  carry  the  weight  of  the  former,  in  the  absence  of  confirmation  of  its 
character  by  other  evidence. 

The  employment  of  the  most  reliable  and  accurate  methods  is,  of  course,  essential 
to  good  analytical  work.  As,  however,  this  is  not  intended  to  be  a  treatise  on  the 
analysis  of  rocks,  the  matter  can  be  only  briefly  touched  on,  for  the  especial  purpose 
of  pointing  out  to  the  nonanalytical  petrographer  some  of  the  more  common  pitfalls 
and  sources  of  error  that  beset  the  path  of  him  who  undertakes  the  analysis  of  rocks. 

In  view  of  the  wide  experience  of  the  chemists  of  the  United  States  Geological 
Survey,  and  the  unequalled,  uniformly  high  standard  of  excellence  shown  by  their 
work,  it  may  be  recommended  that  the  methods  adopted  by  them/'  should  be  employed 
whenever  possible,  at  least  until  improvements  on  them,  or  better  methods,  shall 
have  been  devised.  Too  high  commendation  can  scarcely  be  bestowed  on  their 
analyses,  especially  the  later  ones,  which  stand  in  a  class  apart  from  almost  all  others, 
as  a  study  of  the  material  here  collected  will  render  evident. 

POSSIBLE  ERRORS. 

The  fact  must  not  be  lost  sight  of  by  petrographers  unacquainted  with  quanti¬ 
tative  analysis,  that  in  certain  portions  of  the  processes,  especially  in  the  older 
methods,  there  is  liability  to  serious  error,  due  either  to  inherent  defects  or  to  the 
necessity  for  special  care  in  manipulation,  such  care  as  is  possible  only  with  a  careful 
and  experienced  analyst.  The  most  prominent  of  these  sources  of  error  will  be 
briefly  stated. 

Liability  to  error  attends  the  determination,  not  only  of  the  minor  constituents, 
where  it  is  generall}T  of  comparatively  small  moment,  but  unfortunately  that  of  most 
of  the  main  and  most  abundant  chemical  rock  constituents,  in  which  case  it  becomes 
a  matter  of  the  utmost  importance.  The  more  important  determinations  which  we 


«Cf.  Bulls.  U.  S.  Geol.  Survey  Nos.  148  and  176. 


\ 


POSSIBLE  ERRORS. 


21 


may  discuss  are  those  of  SiO.,,  AL03,  Fe,03,  FeO,  MgO,  CaO,  the  alkalies,  Ti02, 
P„05,  and  MnO. 

In  regard  to  silica,  Hillebrand®  has  clearly  shown  that  the  methods  usually 
employed  do  not  yield  accurate  results,  but  that  two  or  more  evaporations  alternating 
with  tiltrations,  together  with  prolonged  ignition  over  the  blast,  are  necessary.  He 
points  out  the  fact  that  this  4‘  may  serve  to  explain  in  small  part  the  excessive  sum¬ 
mations  often  encountered  in  rock  analyses.”  It  is  also  shown  that  silica  is  not  wholly 
thrown  down  bv  ammonia  or  sodium  acetate  along  with  the  aluminum  and  iron,  and 
that  it  is  appreciably  soluble  in  melted  potassium  pyrosulphate. 

Increase  in  the  apparent  amount  of  alumina,  due  to  imperfect  separation  of  mag¬ 
nesia,  is  probably  the  error  of  considerable  magnitude  most  commonly  met  with  in 
rock  analyses,  especially  in  those  of  femic  (basic)  rocks.  It  arises  from  the  fact  that 
magnesium  hydroxide  tends  to  fall  down  with  aluminum  hydroxide  on  precipitation 
with  ammonia.  This  can  be  prevented  only  by  the  presence  of  sufficient  ammonium 
salts  and  by  repeated  precipitations,  either  with  ammonia  alone  or  with  sodium  acetate 
as  well. 

These  conditions  are  easily  neglected  by  the  inexperienced  analyst,  and,  in  com¬ 
piling  the  present  collection,  I  have  noted  so  many  instances  where  this  error  has 
certainly  been  made,  and  so  many  others  where  it  is  strongly  suspected  but  not 
definite^  provable,  owing  to  the  insufficiency  of  the  petrographic  description,  that  I 
must  add  my  word  of  warning  to  those  of  Hillebrand6  and  Pirsson.c 

In  regard  to  the  determination  of  ferrous  iron,  Stokes^  has  shown  that  ferric 
sulphate  exerts  a  marked  oxidizing  effect  on  pyrite,  and  starting  from  this  fact 
Hillebrand*  demonstrates  the  unreliability  of  the  Mitscherlich  method,  commonly 
employed  in  Europe  for  the  determination  of  ferrous  iron,  i.  e.,  decomposition  with 
sulphuric  acid  in  a  sealed  tube.  This  gives  often,  especially  in  rocks  rich  in  iron, 
too  high  results  for  FeO,  and  decomposition  by  hydrofluoric  acid  in  an  atmosphere 
of  carbonic  acid  is  to  be  preferred. 

It  must  be  noted,  however,  that  in  the  hands  of  inexperienced  analysts  the  latter 
method,  as  well  as  the  former,  is  liable  to  give  low  results  for  ferrous  and  correspond¬ 
ingly  high  figures  for  ferric  iron,  in  consequence  of  the  partial  oxidation  of  the 
former,  due  to  careless  manipulation.  This  error  is  the  undoubted  explanation  of  a 
number  of  anomalously  high  figures  for  ferric  iron  to  be  found  in  the  collection,  for 
these  do  not  accord  with  what  can  be  discovered  about  the  mineralogical  composition 
as  revealed  by  the  descriptions. 


rtBull.  U.  S.  Geol.  Survey  No.  176,  1900,  p.  52,  and  Jour.  Am.  Chem.  Soc.,  Vol.  XXIV,  1902,  pp.  362  et  seq. 
&Hillebrand,  Bull.  U.  S.  Geol.  Survey  No.  176,  1900,  p.  55. 
ePirsson,  Jour.  Geol.,  Vol.  IV,  1896,  p.  688. 
d  Stokes,  H.  N.,  Bull.  U.  S.  Geol.  Survey  No.  186,  1901. 
f  Bull.  U.  S.  Geol.  Survey  No.  176,  1900,  p.  89. 


22 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


Another  possible  error  in  the  determination  of  the  iron  oxides,  and  one  which 
may  be  easily  made  by  the  novice,  is  that  involved  in  the  reduction  of  the  solution 
of  the  precipitate  by  ammonia  water  for  the  determination  of  total  iron.  If  the 
current  of  II„S  is  not  continued  for  a  sufficient  length  of  time,  the  ferric  sulphate 
will  not  be  completely  reduced  to  the  ferrous  state,  so  that  the  apparent  amount 
of  ferric  oxide  will  be  too  low  and  that  of  alumina  correspondingly  too  high.  This 
will  not,  of  course,  affect  the  ferrous  iron,  as  this  is  always  determined  in  a  separate 
portion. 

The  error  involved  in  the  liability  of  magnesia  to  be  precipitated  in  part  with 
the  alumina,  which  has  already  been  touched  on,  will  lead  to  too  low  figures  for  this 
constituent. 

Another  error  in  the  determination  of  this  oxide,  though  in  general  of  less 
magnitude  and  importance,  is  that  involved  in  its  precipitation  as  ammonium  mag¬ 
nesium  phosphate.  Gooch  and  Austin®  have  shown  that  under  the  conditions  usually 
obtaining  in  this  determination  there  is  a  strong  tendency  toward  high  errors 
on  the  side  of  apparent  increased  amount  of  magnesia,  owing  to  the  presence  of 
excess  of  the  precipitant,  ammonium  salts  and  free  ammonia.  Since  this  error  is 
due  to  the  fact  that,  under  these  conditions,  the  ammonium  magnesium  phosphate 
contains  more  P205  than  is  called  for  by  the  ideal  constitution,  it  will  not  affect  other 
constituents,  but  will  be  positive  in  its  effect,  and  thus  raise  the  summation  of  the 
whole  analysis.  It  is  possible  that  this  may  account  in  part  for  some  of  the  curi¬ 
ous,  slightly  high  summations  met  with  in  what  are  apparently  otherwise  excellent 
analyses. 

A  source  of  error  in  the  determination  of  CaO,  of  possibly  frequent  occurrence, 
is  that  involved  in  the  use  of  ammonia  water  that  is  not  fresh.  The  solution  is  then 
likely  to  contain  a  notable  proportion  of  ammonium  carbonate,  which  wrill  cause  the 
precipitation  of  part  of  the  CaO  as  carbonate  along  with  the  alumina,  etc.  This 
will  be  weighed  with  these,  which  will  increase  the  apparent  amount  of  Al2  03,  and 
decrease  that  of  CaO  by  the  same  amount. 

In  regard  to  the  determination  of  the  alkalies,  I  need  only  add  a  word  in  confir¬ 
mation  of  the  view  expressed  by  Hillebrand6  as  to  the  advantages  of  the  Lawrence 
Smith  method,  both  as  to  accuracy  and  as  to  time  saved.  The  slight  correction 
necessary  for  the  minute  amount  of  alkalies  present  in  the  calcium  carbonate  used  is 
a  constant  one,  easily  and  safely  applied,  while,  on  the  other  hand,  any  of  the  other 
methods  of  decomposition  involving  the  preliminary  separation  of  alumina,  iron 
oxides,  lime,  and  magnesia  introduces  a  large  element  of  uncertainty  and  possible 
error,  owing  to  the  impurities  contained  in  the  reagents  and  taken  up  from  the  glass 
vessels. 


«Gooch,  P.  A.,  and  Austin,  M.,  Am.  Jour.  Sci.,  Vol.  VII,  1899,  p.  197. 


&Bull.  U.  S.  Geol.  Survey  No.  170,  p.  90. 


COMPLETENESS. 


23 


The  colorimetric  method  for  the  determination  of  TiO.,,  described  by  Hillebrand, 
is  by  far  the  most  accurate  and  the  quickest,  and  should  be  uniformly  used,  since  the 
older  methods,  based  on  its  precipitation  by  prolonged  boiling,  are  very  uncertain 
unless  the 'conditions  are  very  exactly  adjusted,  especially  when  much  Ti02  is  present, 
in  which  case  it  is  very  liable  to  be  contaminated  by  Al.,0,  and  Fe203.  The  assump¬ 
tion  which  is  sometimes  made,  that  the  residue  left  on  evaporation  of  the  silica  with 
hydrofluoric  acid  represents  all  the  Ti02  present,  is  quite  unwarranted,  since  this 
residue  contains  only  part  of  the  TiOs  at  most,  and  also  some  A1203,  Fe203,  P205,  etc. 

In  cases  where  the  separation  of  alumina,  etc.,  has  been  made  by  the  sodium- 
acetate  method,  for  the  more  complete  separation  of  MnO,  it  must  be  remem¬ 
bered  that,  unless  the  amount  of  acetic  acid  present  and  the  general  conditions  are 
very  exactly  controlled,  there  is  great  danger  of  incomplete  precipitation  of  alumina 
at  this  stage.  The  A1203  not  precipitated  here  will  subsequently  be  thrown  down 
with  the  MnO  and  weighed  with  it,  rendering  the  figures  for  this  oxide  too  high 
and  those  for  alumina  correspondingly  low.  This  error  is  one  of  comparatively 
frequent  occurrence,  judging  from  the  abnormally  high  amounts  of  MnO  often  stated 
as  present,  and  is  one  especially  liable  to  be  made  by  the  inexperienced  analyst. 
For  this  reason  it  would  be  preferable,  unless  the  analyst  has  had  experience  in  the 
sodium-acetate  method,  to  precipitate  the  alumina,  etc.,  with  ammonia  several  times 
rather  than  use  the  sodium  acetate-method,  even  though  the  precipitation  of  MnO 
be  less  complete,  since  the  error  involved  in  the  determination  of  MnO  is  of  far 
less  importance  than  that  possibly  affecting  the  A1203. 


COMPLETENESS. 

The  ideal  analysis  should  show  the  percentage  amount  of  every  constituent 
present,  and,  for  practical  purposes  at  any  rate,  all  those  that  are  present  in  amount 
sufficient  to  make  their  determination  a  matter  of  interest,  or  whose  presence  or 
absence  bears  on  the  problem  for  which  the  analysis  is  made. 

The  amount  which  may  make  a  constituent  worth  determining  will  vary,  of 
course,  in  different  cases,  as  will  the  number  of  constituents  to  be  sought  for.  Thus 
in  such  simple  rocks  as  most  liparases  (granites,  rhyolites,  etc.)  and  labradorases 
(anorthosite)  it  is  not  necessary  to  determine  such  a  number  of  constituents  as  should 
be  determined  in  the  case  of  miaskares  and  rocks  belonging  to  the  dosalane  and 
salfemane  classes.  But  in  view  of  the  facts  that  an  analysis  should  be  truly  repre¬ 
sentative  of  the  composition  of  the  rock,  that  it  may,  if  complete,  be  of  use  to  others 
for  the  discussion  of  problems  other  than  the  one  immediately  in  hand,  and  the 
general  proposition  that  only  good  work  should  be  countenanced  in  science,  every 
analysis  should  be  as  complete  as  it  is  practicable  to  make  it. 


24 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


MAIN  CONSTITUENTS. 

It  goes  without  saying-  that  in  every  rock  analysis  worthy  of  the  name  all  the 
usual  main  constituents  must  be  determined.  These  will  include  silica,  alumina, 
ferric  and  ferrous  oxides,  magnesia,  lime,  soda,  potash,  and  water. 

Unfortunately  a  large  number  of  analyses  exist  in  which  the  iron  oxides  have 
not  been  separately  determined,  but  are  given  together,  as  either  Fe203  or  FeO,  or 
most  equivocally  bracketed  opposite  both  of  these.  Unless  the  iron  oxides  are 
present  in  very  small  amount,  e.  g.,  less  than  1  per  cent,  or  unless  the  presence  of 
a  considerable  amount  of  pyrite  or  pyrrhotite  makes  the  determination  of  FeO 
very  uncertain,  this  is  a  quite  unpardonable  proceeding,  since  the  proper  separate 
determination  of  these  two  is  essential  to  the  complete  chemical  discussion  of 
the  rock  magma  and  the  calculation  of  the  mineral  composition,  either  normative 
or  modal.  This,  with  the  error  involved  in  the  separation  of  alumina  and  magnesia, 
is  the  most  common  defect  in  rock  analyses,  and  a  surprisingly  large  number  have 
been  rejected  from  Part  I  of  the  tables  on  this  account. 

The  alkalies  are  occasionally  estimated  together  (as  Na20),  or  determined  by  the 
difference  from  100  per  cent.  This  procedure  is  found  especially  in  analyses  of 
the  more  femic  rocks,  but  sometimes  in  those  of  rocks  in  which  the  alkalies  amount 
to  several  per  cent.  This  is  also  a  form  of  slovenliness  for  ivhich  there  should  be  no 
excuse,  except  in  rocks  composed  largely  or  entirely  of  such  minerals  as  olivine, 
magnetite,  and  ilmenite,  when  the  alkalies  can  be  present  only  in  traces  at  most. 

The  molecular  weight  of  orthoelase  and  albite  is  so  high®  that  in  any  chemico- 
mineralogical  system  of  classification,  or  in  the  calculation  of  the  mode,  the  deter¬ 
mination  of  both  of  these  oxides  is  of  the  greatest  importance.  Furthermore  the 
assumption  is  made  that  the  sum  of  the  analysis  will  be  exactly  100  per  cent,  which 
is  quite  unwarranted  in  view  of  the  great  rarity  of  this  occurrence,  and  especially 
when  the  chemist  thinks  so  little  of  his  work  as  to  be  unwilling  to  determine  the 
alkalies  properly. 

In  some  highly  salic  or  highly  alkalic  rocks  MgO  and  CaO  are  not  determined,  but 
are  given  as  “traces.”  While  in  most  of  these  cases  their  nondetermination  will  not 
seriously  affect  the  results  of  calculation,  yet  such  a  procedure  is  to  be  deplored  as 
being  not  first-class  work.  The  term  “trace”  should  indicate  strictly  and  uniformly 
that  the  constituent  has  been  looked  for  and  found,  but  in  unweighable  amount 
(0.1  milligram  or  less),  while  if  it  is  not  looked  for  because  it  is  supposed  to  be 
present  in  small  amount,  some  such  phrase  as  “present,  not  determined”  (p. ,  n.  d.) 
should  be  employed.  The  limits  assigned  to  the  term  “trace”  vary  widely,  and  in 
the  collection  may  be  found  instances  where  this  term  is  used  of  constituents  that 
are  certainly  present  to  the  extent  of  half  of  1  per  cent  or  much  more. 


a  One  per  cent  of  K20  corresponds  to  5  per  cent  of  orthoelase,  and  the  same  amount  of  Na«0  to  8  per  cent  of  albite. 


COMPLETENESS. 


25 


MINOR  CONSTITUENTS. 

Assuming  that  the  eight  main  constituents  are  to  be  determined,  we  may  take 
up  the  discussion  of  those  usually  regarded  as  “  minor.”  Both  Clarke®  and  Hille- 
brand  b  lay  stress  on  the  importance  of  their  determination  from  the  point  of  view  of 
the  solution  of  broad  petrological  problems.  Thus  the  work  of  the  chemists  of  the 
United  States  Geological  Survey  has  demonstrated  the  comparative  abundance  and 
general  distribution  of  titanium,  barium,  and  strontium,  and,  in  the  case  of  barium, 
a  greater  abundance  along  the  Rocky  Mountain  region  than  in  the  eastern  and  the 
extreme  western  parts  of  the  United  States.  The  frequent  presence  of  vanadium  in 
the  more  fernic  (basic)  rocks  and  of  molybdenum  in  the  more  quaric  (siliceous)  ones,c 
of  zirconium  in  presodic  and  especially  nephelite-bearing  rocks,  and  of  nickel  and 
chromium  in  very  femie  rocks,  are  other  well-known  instances  of  important  contri¬ 
butions  to  our  knowledge  of  rock  magmas  due  to  completeness  in  the  making  of 
analyses. 

Indeed,  Hillebrand  has  entered  such  a  strong  plea  for  completeness  in  rock 
analysis  that  little  more  need  be  said  to  convince  petrographers  of  the  correctness 
of  his  position.  Since,  however,  there  is  a  strong  tendency  to  regard  as  adequate 
for  petrographical  purposes  analyses  in  which  only  the  eight  main  constituents  have 
been  determined,  further  remarks,  especially  in  elucidation  of  some  special  points, 
will  not  be  amiss. 

It  is  obvious  that  when  the  rock  carries  notable  amounts  of  minerals  which  con¬ 
tain  as  essential  ingredients  any  of  the  “  minor ”  constituents,  these  should  always  be 
determined.  Thus,  Cl  and  SOs  should  always  be  included  in  the  analysis  of  rocks 
with  sodalite  or  noselite;  Ti02,  when  titanite,  ilmenite,  or  titaniferous  augite  are 
present;  P205,  when  there  is  any  apatite,  and  Zr02  if  there  is  considerable  zircon 
or  eudialyte.  If  these  constituents  are  not  determined  the  analysis  will  not  show 
adequately  the  composition  of  the  rock,  or,  as  Clarke  puts  it,  “the  petrographer  has 
been  more  thorough  than  the  chemist.” 

It  is  for  this  reason  that  a  microscopical  study  of  the  rock  section  should  always 
precede  the  analysis.  The  conscientious  chemist  who  is  not  a  petrographer,  and 
who,  therefore,  does  not  know  what  minor  constituents  are  especially  to  be  looked 
for,  can  only  make  sure  of  the  completeness  of  his  work  by  the  determination  of 
everything  possible.  While  the  results  will  alwaj^s  be  of  value,  }7et  in  many  cases 
part  of  this  labor  may  be  quite  unnecessary,  involving  a  waste  of  valuable  time  which 
might  be  obviated  if  the  petrographer  would  furnish  with  the  material  an  indication 
of  what  minor  substances  are  especially  to  be  looked  for. 


a  Clarke,  F.  W.,  Bull.  U.  S.  Geol.  Survey  No.  148,  p.  11. 

Hillebrand,  Jour.  Am.  Chem.  Soc.,  Vol.  XVI,  1894,  p.  90;  Bull.  U.  S.  Geol.  Survey  No.  148,  p.  17. 
c  Hillebrand,  Am.  Jour.  Sci.,  Vol.  VI,  1898,  p.  216. 


26 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


Although  the  determination  of  all  constituents,  even  those  which  are  present  in 
mere  traces,  is  to  be  desired,  yet  in  practice  a  compromise  must  be  made,  generally, 
between  the  degree  of  completeness  and  the  time  to  be  devoted  to  practical  analytical 
work.  The  determination  of  most  of  the  minor  constituents  takes  considerable  time, 
and,  if  the  number  of  analyses  to  be  made  is  great,  or  the  time  available  is  limited,  it 
may  not  be  advisable  to  determine  all  the  lesser  constituents,  but  only  those  essential 
to  a  proper  understanding  of  the  rock.  This  is  especially  true  of  the  rarer  substances, 
as  Zr02,  Cr203,  V203,  F,  NiO,  CoO,  CuO,  SrO,  etc.,  and  S03  and  Cl  in  rocks  without 
the  sodalite  group  of  minerals.  On  the  other  hand,  such  constituents  as  Ti02,  P205, 
BaO,  and  S,  which  are  now  known  to  be  commonly  present  and  widely  distributed, 
should  be  determined  in  every  analysis  which  makes  an  attempt  at  completeness,  as 
every  modern  analysis  should.  It  is  also  general^  of  importance  to  determine  Cr203 
and  NiO  in  the  most  femic  rocks,  especially  when  olivine  is  abundant,  as  they  are 
apt  to  be  present  in  very  considerable  amount. 

In  discussing  this  matter,  an  important  point  to  bear  in  mind  is  that  the  deter¬ 
mination  of  certain  of  the  minor  constituents  affects  the  figures  for  other  and  often 
very  important  ones.  This  arises  from  the  methods  of  analysis  necessarily  employed, 
in  which  several  constituents  are  precipitated  together  in  one  operation,  and  subse¬ 
quently  some  of  them  separately  determined,  the  figures  for  one  being  known  by  the 
difference.  Of  these  by  far  the  most  important  are  Ti02  and  P205.  These  are  not 
only  almost  always  present,  often  in  very  considerable  amount,  but  their  determina¬ 
tion  affects  that  of  the  highly  important  alumina.  In  the  course  of  the  analysis 
AI0O3,  Fe203,  Ti02,  and  P205  are  precipitated  together,  the  three  last  are  deter¬ 
mined  separately,  and  the  alumina  is  estimated  by  difference  from  the  sum  of  the 
four,  since  so  far  no  satisfactory  method  has  been  devised  for  its  independent 
determination. 

It  is  obvious,  therefore,  that,  if  Ti02  and  P205  are  not  determined,  the  figure  for 
alumina  will  be  too  high.  In  the  case  of  all  but  the  most  salic  rocks  the  error  may 
be  of  great  moment,  since  these  two  oxides  may  be  present  in  a  very  considerable 
amount,  and  the  alumina  is  the  only  measure  we  have  for  the  calculation  of  the 
amount  of  anorthite— modal  or  normative — from  the  analysis. 

Similarly,  the  nondetermination  of  Zr02,,  Cr203,  and  V203  will  raise  the  figures 
for  alumina,  since  these  are  also  precipitated  together.  In  the  great  majority  of 
rocks,  however,  the  error  will  be  negligible,  owing  to  the  minute  quantities  of  these 
oxides  usually  present. 

Vanadium  also  affects  the  determination  of  ferrous  iron,  and,  if  presumably  present 
in  more  than  traces,  it  may  be  determined  and  a  proper  correction  applied  to  the 
ferrous  iron®  in  the  most  accurate  work.  Fortunately  this  will  very  seldom  be 
necessary. 


a  Hillebrand,  Bull.  U.  S.  Geol.  Survey  Xo.  176,  p.  95. 


MINOR  CONSTITUENTS. 


27 


As  SrO  is  precipitated  with  CaO  as  oxalate,  its  nondetermination  will  render  the 
apparent  amount  of  CaO  too  high.  As  this  substance  rarely  occurs  in  more  than 
traces,  this  error  is  negligible  for  all  but  the  most  accurate  investigations. 

Lithium  chloride  remains  with  the  sodium  chloride  after  separation  of  the  potas¬ 
sium  as  platinichloride,  but,  so  far,  has  rarely  been  found  to  be  present  in  quantity 
great  enough  to  warrant  its  estimation. 

The  question  as  to  whether  MnO  should  be  determined  or  not  is  a  rather  per¬ 
plexing  one.  Of  course  for  the  best  work,  and  if  the  analyst  is  sufficiently  experi¬ 
enced  not  to  fall  into  the  error  possible  in  its  determination  by  the  sodium-acetate 
method  already  spoken  of,  it  should  be  done.  But,  on  the  other  hand,  its  determina¬ 
tion  adds  very  materially  to  the  time  needed  for  the  analysis,  and  involves  as  well 
the  use  of  a  method  liable  to  an  error  which  will  affect  seriously  a  much  more 
important  constitutent.  Furthermore  the  long  list  of  analyses  made  by  the  chemists 
of  the  United  States  Geological  Survey,  as  well  as  those  made  elsewhere,  show  that, 
while  almost  always  present,  its  amount  is  very  small,  in  general  little  more  than  a 
trace.  Thus  in  all  the  analyses  of  igneous  rocks  published  in  Bulletin  168  of  the 
United  States  Geological  Survey  it  only  exceeds  0.50  per  cent  twice,"  and  falls  between 
0.10  and  0.50  five  times.6  Indeed,  it  is  of  interest  to  note  in  this  connection  that 
Professor  Clarke’s  estimate  of  the  average  composition  of  the  igneous  rocks  of  the 
United  States0  shows  that  the  amount  of  manganese  in  them  is  only  about  one-sixth 
of  that  of  titanium,  and  is  even  less  than  that  of  phosphorus.  In  view  of  the  great 
variety  of  igneous  rocks  represented  by  these  analyses  and  of  the  very  high  character 
of  the  analytical  work,  the  high  figures  so  often  found  for  this  oxide  in  many  other 
analyses  are  to  be  regarded  with  suspicion,  the  probability  being  that  in  them  the 
error  already  spoken  of  has  been  made. 

That  the  nondetermination  of  MnO  will  affect  the  figures  for  other  constituents 
is  certain,  but  to  what  extent  is  not  very  clear.  If  the  separation  of  Al2Oa,  etc.,  has 
been  made  with  ammonia  water,  a  small  portion  will  be  thrown  down  and  be  weighed 
as  alumina.  Part  of  that  which  passes  through  in  the  filtrate  will  be  thrown  down 
with  calcium  oxalate  and  weighed  as  CaO.  But,  as  manganese  oxalate  is  slightly 
soluble  in  water,  some  of  the  manganese  will  be  thrown  down  as  phosphate  with  the 
magnesia  and  weighed  with  this.  Little  is  known  of  the  various  proportions  of  the 
manganese  which  will  thus  be  distributed,  and  the  matter  is  one  which  calls  for 
investigation.  It  has  seemingly  been  passed  over  in  the  text-books  on  quantitative 
analysis,  owing  to  the  assumption  that  the  MnO  is  separated  in  the  regular  course 
before  the  precipitation  of  CaO  and  MgO. 

a  0.93  in  A,  p.  81;  0.70  in  F,  p.  212. 

0  0.45  in  C,  p.  169;  0.43  in  D,  p.  161;  0.41  in  E,  p.  214;  0.40  in  E,  p.  20,  and  A,  p.  147. 

c  Clarke,  Bull.  U.  S.  Geol.  Survey  No.  168,  p.  15. 


28 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


At  any  rate,  in  view  of  the  small  amount  of  this  substance  present,  its  probable 
distribution  among  several  constituents,  thereby  affecting  each  of  them  only  to  a 
negligible  extent,  and  the  loss  of  time  and  possibility  of  error  affecting  A120:J 
involved  in  its  determination,  it  may  be  held  that  the  determination  of  MnO  is  not 
essential  or  called  for.  even  in  what  is  otherwise  very  complete  and  accurate  work. 

In  regard  to  the  determination  of  H20,  I  am  in  accord  with  Dittrich®  and  Hille¬ 
brand,6  that  the  rock  powder  for  analysis  should  be  air  dry,  and  that  it  is  advisable 
(though  not  necessary)  to  discriminate  between  combined  and  hygroscopic  water, 
i.  e.,  that  driven  off  above  and  below  110°.  The  remarks  of  Hillebrand  on  the 
inadvisability  of  the  method  for  the  determination  of  H20  by  “loss  on  ignition”  will 
be  concurred  in  by  every  experienced  analyst  who  has  considered  the  matter. 

Except  where  minerals  containing  water  or  hydroxyl,  as  analcite  or  muscovite, 
are  present  as  primary  components,  the  determination  of  H20  is  not  a  matter  vital 
to  proper  comprehension  of  the  rock  magma,  but  its  amount,  as  well  as  that  of  C02, 
is  of  very  great  importance  as  a  measure  of  the  freshness  of  the  rock.  The  deter¬ 
mination  of  water,  therefore,  must  be  regarded  as  essential  to  every  rock  analysis, 
and  that  of  C02  also  when  the  presence  of  calcite  or  cancrinite  or  the  altered  condi¬ 
tion  of  the  rock  demands  it. 

In  this  connection  a  common  practice  may  be  briefly  alluded  to,  namely,  that  of 
deducting  H20  and  CC)2  when  the  rock  is  not  fresh,  calculating  the  remainder  to  100 
per  cent,  and  assuming  that  the  result  represents  the  composition  of  the  original, 
unaltered  rock.  This  assumption  is  quite  unwarranted  and  is  apt  to  lead  to  total!}' 
erroneous  conclusions,  since  the  processes  of  weathering  or  alteration  do  not  usually 
consist  in  the  simple  addition  of  H20  and  C02.  but  in  the  assumption  of  these  con¬ 
comitantly  with  changes,  either  additive  or  subtractive,  in  some  or  all  of  the  other 
components.  And  as  yet  we  are  unable  to  determine  these  with  any  degree  of  success. 

Furthermore,  such  a  procedure,  like  that  of  any  recalculation  to  100  per  cent, 
unless  the  original  figures  are  given,  deprives  others  of  one  of  the  best  methods  of 
judging  of  the  value  of  the  analysis,  by  concealing  the  original  summation. 

RATING  OF  ANALYSES. 

We  have  hitherto  considered  rock  analyses  from  the  point  of  view  of  the  analyst. 
It  remains  to  discuss  them  from  that  of  the  petrographer  who  wishes  to  use  the 
results,  and  who  therefore  needs  to  have  some  means  of  judging  as  to  their  reliability. 
For  this  purpose  it  is  necessary  to  discuss  the  features  of  an  analysis  on  which  this 
judgment  may  be  based,  and  it  will  also  be  convenient  to  formulate  a  method  by  which 
the  general  character  of  an  analysis  may  be  expressed  concisely.  This  expression  of 
the  relative  worth  of  an  analysis  may  conveniently  be  called  its  “  rating,’  in  analog}' 
with  that  of  commercial  houses. 


i  Dittrich,  M.,  Mittheil.  Badischen  Geol.  Landesanst.,  Vol.  Ill,  p.  79,  1894. 
b  Hillebrand,  Bull.  U.  S.  Geol.  Survey  No.  148,  1897,  pp.  26  et  seq. 


RATING  OF  ANALYSES. 


29 


The  user  of  the  analysis  must  rely  on  the  judgment  of  the  collector  and  the  analyst 
that  the  specimen,  both  as  to  locality  and  size,  correctly  represents  the  rock  mass, 
unless  some  reason  appears  to  the  contrary.  It  rarely  happens  that  the  analysis  in 
itself  gives  any  indication  as  to  this  point,  at  least  in  a  decisive  way. 

The  special  case  of  the  analysis  of  the  groundmass  of  a  rock  is,  however,  not 
uncommon,  and  may  be  briefly  discussed.  For  the  general  purposes  of  petrography 
such  analyses  are  of  little  use,  and  they  have  been  excluded  from  the  present  collection. 
On  the  other  hand,  for  the  solution  of  certain  special  problems  the}T  may  be  of  great 
value.  It  must  be  pointed  out,  however,  that  an  essential  adjunct  to  their  use  is  a 
knowledge  of  the  relative  amounts  of  the  phenocrysts  and  the  groundmass,  unless 
only  a  knowledge  of  the  composition  of,  for  example,  glassy  or .  microaphanitic 
groundmasses  be  desired.  If  the  purpose  is  the  study  of  the  order  of  crystallization, 
or  some  such  thing,  a  knowledge  of  the  quantitative  relations  is  indispensable. 

Unfortunately,  this  knowledge  is  wanting  in  every  case,  so  far  as  my  knowledge 
extends,  quantitative  relations  being  given  only  in  the  cases  of  analyses  of  the  por¬ 
tions  soluble  and  insoluble  in  acid.  This  is  only  another  phase  of  the  prevailingly 
qualitative  way  of  regarding  petrographical  problems. 

It  can  scarcely  be  reiterated  too  often  that  the  science  of  petrography  must 
become  quantitative  if  it  is  to  make  real  and  certain  advance.  The  time  has  passed 
when  a  simple  statement  of  the  minerals  composing  a  given  rock,  with  a  description 
of  their  physical  properties,  will  suffice.  We  need  to  know  in  addition  the  relative 
amounts  of  the  minerals  as  accurately  as  may  be,  with  their  chemical  composition,  as 
well  as  that  of  the  rock  itself,  derived  either  from  chemical  analysis  or  from  deter¬ 
mination  of  the  quantitative  mineral  composition.  Otherwise  many  of  the  broadest 
and  most  fundamental  problems  in  petrology  will  be  incapable  of  solution,  and  the 
science  will  still  consist  of  vague  gropings  after  the  truth,  because  some  of  the  most 
essential  facts — the  quantitative  relations — remain  neglected  and  unknown. 


ACCURACY. 


Assuming,  therefore,  that  the  analysis  is  representative  as  far  as  the  material 
goes,  we  have  its  accuracy  and  its  completeness  as  means  of  judging  its  value.  The 
features  on  which  this  must  rest,  as  far  as  accuracy  is  concerned,  may  be  stated  as 
follows: 


Internal  evidence 


External  evidence 


((a)  Agreement  with  the  mode. 
I (b)  Summation. 

'(c)  Analyst. 

•  (d)  Methods  of  analysis. 

( e )  Indirect  evidence. 


30 


CHEMICAL  ANALYSES  OF  IGNEOUS  EOCKS. 


INTERNAL  EVIDENCE. 

Agreement  with  the  mode. — It  may  seem  superfluous  to  state  that  the  chemical 
analysis  of  a  rock  must  accord  with  its  quantitative  mineral  composition  as  determined 
by  the  microscope.  That  such  a  statement  is  necessary,  however,  study  of  the 
present  collection,  with  the  many  discordant  results  it  contains,  will  render  clear. 

When  the  mode  of  a  rock  is  known,  this  is  the  best  basis  for  ascertaining 
whether  the  analyst  has  done  his  work  well  or  not.  Given  the  quantitative  amounts 
of  the  minerals  present  and  a  knowledge  of  their  composition,  the  chemical  analysis 
can  be  easily  checked  by  the  calculation  of  the  chemical  composition  from  the  miner- 
alogical  data."  The  agreement  need  not  be  exact,  and  indeed  seldom  is  except  under 
the  most  favorable  conditions,  since  the  measurement  of  the  amounts  of  the  constit¬ 
uent  minerals  under  the  microscope  can  not  be  of  the  highest  order  of  accuracy,  and 
assumptions  must  often  be  made  as  to  the  chemical  composition  of  some  of  them. 
But  the  result  will  usually  be  sufficiently  accurate  to  show  whether  notable  analytical 
errors  have  been  made  or  not. 

In  the  great  majority  of  cases,  however,  only  the  roughest  kind  of  quantitative 
data  are  either  given  in  the  descriptions  or  conveyed  by  the  present  rock  names,  if 
indeed  one  is  fortunate  enough  to  have  an}7  kind  of  quantitative  information  as  to 
the  mineral  composition  vouchsafed  him.  Here  one  can  detect  only  errors  of  a 
flagrant  kind,  and  of  magnitudes  involving  several  per  cent  of  certain  constituents. 

In  considering  the  possibility  of  any  of  the  errors  previously  mentioned,  the 
judgment  of  the  petrographer,  based  on  a  knowledge  of  the  chemical  composition  of 
minerals  as  well  as  on  his  knowledge  of  analytical  work,  must  come  largely  into  play. 
All  the  chemical  features  must  be  taken  into  consideration  in  connection  with  the 
description,  especially  in  the  absence  of  exact  quantitative  mineralogical  data. 

Thus  high  alumina  (e.  g.,  20  per  cent  or  more)  in  a  rock  with  less  than  50  per 
cent  of  silica,  and  even  with  low  magnesia,  is  not  necessarily  due  to  an  error  in  the 
separation  of  alumina  and  magnesia.  It  may  be  caused  by  the  nondetermination  of 
Ti02  and  P205,  or  by  the  presence  in ’abundance  of  anorthite  or  nephelite,  which  will 
be. indicated  by  correspondingly  high  lime  or  soda.  Apparently  high  soda  and  low 
potash  in  a  so-called  orthoclase  rock  may  arise  from  an  imperfect  description  or 
identification  of  the  feldspar,  which  may  be  in  reality  a  soda-orthoclase. 

It  must  also  be  borne  in  mind  that  cases  occur  where  the  microscopical  is  seem¬ 
ingly  at  variance  with  the  chemical  analysis,  and  yet  the  latter  is  undeniably  correct. 
This  is  especially  true  of  very  fine-grained  holocrystalline  or  hypocrystalline  rocks, 
and  it  will  happen  not  infrequently  that  further,  more  critical,  microscopical  study 
will  reveal  a  constituent  which  has  been  overlooked,  but  whose  presence  is  manifest 
after  the  analysis  has  indicated  its  existence. 


«Cf.  Jour.  Geol.,  Vol.  X,  1902,  pp.  667  et  seq. 


EXAMPLES  <>E  ANALYTICAL  ERRORS. 


31 


An  instance  of  this  is  the  hornblende-phyro-essexose  (kulaite)  of  Phrygia, 
investigated  by  the  writer,  i'll  which  the  rather  abundant  nephelite  was  at  hrst  over¬ 
looked  in  the  partly  glass}'  groundmass,  and  was  discovered  only  when  repeated 
careful  chemical  work  and  calculation  of  the  mode  showed  that  it  was  necessarily 
present. a 

Another  well-known  instance  where  the  chemical  analysis  does  not  correspond 
with  the  microscopical  character  is  that  of  the  wyomingose  and  orendose  of  the 
Leucite  Hills.6  In  the  former,  although  modally  the  only  salic,  minerals  visible  are 
leucite  and  noselite,  the  analysis  shows  a  large  excess  of  silica.  In  the  orendose 
there  is  an  excess  of  alkalies  over  alumina,  with  excess  of  silica  in  one  case.  So  far, 
these  discrepancies  have  not  been  explained,  though  there  can  be  no  doubt  of  the 
high  degree  of  accuracy  and  completeness  of  the  analysis. 

But  such  occurrences  are  exceptional,  and  if  no  explanation  is  afforded  by  the 
description  to  account  for  the  peculiarities  of  the  analysis  we  may,  in  general, 
assume  that  errors  have  been  made,  and  consider  the  analysis  untrustworthy  in  this 
respect. 

In  this  connection  it  will  be  well  to  mention  that  the  simple  method  of  calcula¬ 
ting  the  norm  of  a  rock,  recently  described, c  is  of  veiw  great  use  in  checking  an 
analysis.  While  apparently  complicated,  in  the  majority  of  cases  it  is  readily  and 
quickly  effected.  Then,  with  some  knowledge  of  the  relations  of  the  standard  and  the 
alferric  minerals,  sufficiently  close  adjustments  of  the  mineral  molecules  are  easily 
made  to  permit  a  comparison  of  the  mode  with  the  analysis. 

It  must  not  be  forgotten,  even  here,  that  in  the  absence  of  a  knowledge  of  the 
quantitative  relations  of  the  component  minerals,  very  serious  analytical  errors  may 
not  be  revealed  by  calculation  of  the  mode,  in  this  or  an\T  other  way,  from  the  chem¬ 
ical  data.  The  error  in  one  or  more  constituents  may  amount  to  several  per  cent, 
and  yet  a  mode  can  be  calculated  which  will  apparently  agree  with  the  description  or 
with  a  qualitative  microscopical  examination. 

This  is  illustrated  by  the  writer’s  first  analysis  of  the  ciminite  of  Fontana  Fies- 
coli,  near  Viterbo. ^  The  mode,  as  calculated  from  this  analysis/  seemingly  agreed 
with  the  microscopical  examination,  although  subsequent  investigation  and  analysis 
showed  that  the  alumina  and  the  magnesia  were  respectively  too  low  and  too  high  by 
about  3  per  cent.-^ 

Although  it  is  always  an  unwelcome  task  to  point  out  mistakes,  }^et  the  citation 
of  some  examples  illustrating  the  more  common  errors  may  be  useful.  It  must  be 

a  Washington,  H.  S.,  Jour.  Geol.,  Vol.  VIII,  1900,  p.  611. 
b  Cross,  Whitman,  Am.  Jour.  Sci.,  Vol.  IV,  1897,  p.  132. 
c  Cross,  Iddings,  Pirsson,  Washington,  Jour.  Geol.,  Vol.  X,  1902,  p.  644. 
d  Washington,  H.  S.,  Jour.  Geol.,  Vol.  IV,  1896,  p.  837. 

(■Idem,  Jour. Geol.,  Vol.  V,  1897,  p.  354. 

/Washington,  H.  S.,  Am.  Jour.  Sci.,  Vol.  IX,  1900,  p.  45. 


32 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


premised,  however,  that  there  is  no  desire  to  call  attention  to  the  mistakes  of  indi¬ 
viduals,  but  the  possibilities  of  serious  error,  even  among  the  best  workers,  will  be 
pointed  out.  It  is  unfortunate  that  a  few  must  be  selected  for  this  criticism,  for,  as 
a  matter  of  fact,  all  are  or  have  been  thus  culpable,  so  that  no  one  petrographer 
can  be  held  guiltless  of  errors  in  the  use  or  making  of  analyses,  or  of  lack  of  proper 
critical  acumen  in  their  selection  in  some  cases;  and  from  the  application  of  these 
criticisms  the  critic  is  far  from  excluding  himself.  I  trust,  therefore,  that  those  who 
are  mentioned  may  pardon  me  for  the  disagreeable  necessity  to  which  I  am  put. 

As  an  instance  of  the  error  in  the  separation  of  alumina  and  magnesia,  besides 
that  given  above,  there  maybe  cited  an  analysis  of  the  essexite  of  Rongstoek/  which 
shows  46.93  per  cent  of  silica,  24.19  alumina,  and  2.42  magnesia.  Part  of  the  high 
alumina  is  to  be  ascribed  to  titanic  and  phosphoric  acids,  which  were  not  determined; 
but,  even  making  due  allowance  for  these,  some  of  the  magnesia  has  undoubtedly 
been  weighed  with  the  alumina.  This  is  clear  on  comparison  with  two  other  analyses 
of  the  same  rock  mass  published  by  Hibsch,* 6  which,  with  50.50  silica,  show  about 
17.85  alumina  and  3.35  magnesia.  The  error  will  be  even  greater  than  is  indicated 
by  the  difference  between  these  figures,  for  the  silica  and  other  percentages  of  the 
analysis  published  by  Lang  make  it  certain  that  his  specimen  was  more  femic  than 
those  of  Hibsch. 

As  another  instance  of  this  very  common  error  there  may  be  cited  the  first 
analysis  of  the  monchiquite  of  Shelburne  Point/  which  gave  18.06  A1203  and  only 
1.12  MgO,  although  hornblende  and  olivine  are  abundant.  Attention  having  been 
called  to  the  manifest  discrepancy/  it  was  reanalyzed  by  another  chemist,  with  a 
result  showing  15.87  A1203  and  8.32  MgO.  Although  this  second  analysis  is  far  from 
being  above  reproach,  }Tet  it  is  sufficient  to  show  that  the  greater  part  of  the  mag¬ 
nesia  had  been  in  the  first  analysis  precipitated  with  the  alumina.  It  is  also  almost 
certain  that  in  the  first  the  two  chief  errors  had  been  made  in  the  determination  of 
iron  oxides-  that  due  to  the  partial  oxidation  of  the  ferrous  iron  in  the  course  of  its 
determination  and  that  involved  in  the  reduction  of  the  solution  containing  total  iron 
by  insufficient  treatment  with  H2S.  The  figures  for  the  alkalies  are  also  quite 
impossible,  and  indeed  the  only  ones  which  have  any  semblance  of  probable  correct¬ 
ness  in  this  unfortunate  instance  are  those  for  silica  and  lime. 

An  illustration  of  the  incorrect  determination  of  the  iron  oxides,  taking  speci¬ 
mens  of  the  rock  as  a  basis  of  judgment,  is  furnished  by  the  often-cited  analysis  of 
the  syenite  of  Biella/  in  which  the  ferric  oxide  is  given  as  6.77  and  the  ferrous  as 
2.02.  Here  there  is  a  large  excess  of  ferric  oxide  over  that  needed  for  the  maximum 


«Lang,  H.  O.,  Tschermak’s  Mineral.  Mittheil.,  Vol.  XV,  1896,  p.  191. 

6  Hibsch,  J.  E.,  Tschermak’s  Mineral.  Mittheil.,  Vol.  XV,  1896,  p.  487. 
c  Kemp  and  Marsters,  Bull.  U.  S.  Geol.  Survey  No.  107,  1893,  p.  34.  « 

ii  Kemp,  in  Weed  and  Pirsson,  Bull.  U.  S.  Geol.  Survey  No.  139,  1896,  p.  116. 
e  Cossa,  Mem.  Ace.  Sci.  Torino,  Vol.  XVIII,  1875,  p.  28. 


EXAMPLES  OF  ANALYTICAL  ERRORS. 


33 


possible  amount  of  magnetite  or  for  the  augitic  molecule  Fe208.(Mg,Fe)0.Si02, 
with  no  hematite  in  the  rock  to  account  for  it.  We  are  therefore  forced  to  conclude 
that  a  partial  oxidation  took  place  in  the  determination  of  FeO,  resulting  in  the 
erroneous  figures  reported. 

A  very  striking  example  of  the  error  due  to  incomplete  precipitation  of  alumina 
by  the  sodium-acetate  method  in  separating  MnO  is  that  of  the  quartz-syenite  of 
Fourche  Mountain,  in  Arkansas. a  One  analysis  of  this  rock  gives  13.45  alumina 
and  5.29  manganous  oxide,  while  the  other  yields  the  figures,  respectively,  18.15 
and  1.00,  the  sum  of  the  first  pair  being  18.74  and  that  of  the  second  19.15.  Here  it 
is  very  obvious  that  in  the  first  analysis  over  4  per  cent  of  Al.,0.t  has  been  weighed 
as  “MnO,”  while  it  is  almost  as  certain  that  the  l  per  cent  of  the  second  is  too  high 
from  the  same  cause,  since  the  rock  is  very  largely  felic  (feldspathic),  and  no 
manganese-bearing  minerals  are  mentioned  as  being  present. 

Illustrations  of  error  in  the  determination  of  the  alkalies  are  furnished  by  a  large 
series  of  analyses  of  Italian  leucite-bearing  rocks.  Of  these  one  may  be  cited  of  a 
leucite-melaphyre  (leucite-basanite)  of  Monte  Jugo,  near  Montefiascone,6  which,  with 
48.30  silica  and  15.07  alumina,  shows  only  0.94  soda  and  1.73  potash.  Of  this  holo- 
crystalline  rock  Klein  says,  “  Leucit  und  Augit  walten  in  Gesteinsgewebe  vor,”  and 
the  section  of  a  specimen  collected  by  myself  at  the  small  hill  bears  this  out,  as  it 
indicates  that  leucite  constitutes  about  40  per  cent  of  the  rock.  The  amount  of  potash 
in  the  anatysis  yields  but  7.8  per  cent  of  leucite,  and  is  certainly  far  too  low.  This 
analysis  and  others  of  basanites  of  this  region  are  so  low  in  alkalies  (especially 
potash)  that,  if  they  were  correct,  the  rocks  would  necessarily  carry  up  to  10  per  cent 
of  quartz,  even  on  the  assumption  that  all  the  bases  took  their  highest  possible  quota 
of  silica,  yielding  orthoclase  instead  of  leucite  and  hypersthene  instead  of  olivine. 

Many  more  examples  of  incorrect  determinations  could  be  cited,  both  of  these  and 
of  nearly  all  other  constituents,  but  the  above  must  suffice  to  point  out  the  impor¬ 
tance  of  close  scrutiny  of  the  analytical  figures  in  conjunction  with  the  mineralogical 
data.  It  may  be  mentioned  that  in  none  of  the  cases  cited,  and  indeed  in  scarcely  any 
case  involving  serious  error  to  be  found  in  the  tables,  has  any  misgiving  been 
expressed  at  the  time  the  analysis  was  published  as  to  the  possibility  of  error,  or  any 
comparison  of  the  analysis  with  the  mode,  no  matter  how  glaring  and  self-evident  the 
incorrectness. 

Summation. — The  summation  of  a  rock  analysis  is  often  an  important  index  to 
its  character,  and  should  always  be  taken  into  consideration  in  rating  it.  In  regard 
to  the  summation  consistent  with  good  work,  Hillebrand  puts  the  matter  very 


((Williams,  J.  F.,  Ann.  Rept.  Geol.  Survey  Arkansas,  1890,  Vol.  II,  1891,  p.  99. 
b  Klein,  C.,  Neues  Jalirbuch  fur  Min.,  Vol.  VI,  1889,  p.  20. 

14128 — No.  14—03 - 


3 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


84 

clearly®  in  his  remarks  to  the  effect  that  a  summation  somewhat  over  100  per  cent  is 
better  than  one  below  100,  and  he  also  assigns  the  limits  for  good  work  as  99.75  and 
100.50.  With  his  reasoning  and  his  limits  1  fully  concur,  though  in  practice  one 
may  be  a  little  lenient  and  extend  the  limits  allowable  to  99.50  and  100.75  with 
advantage. 

While  figures  below  or  in  excess  of  these  limits  are  very  good  evidence  of  error 
somewhere  in  the  analysis,  the  converse  is  not  always  true,  that  figures  within  these 
are  proof  of  correct  results.  Several  errors  may,  of  course,  balance  one  another,  so 
that  a  summation  very  close  to  100  will  be  yielded,  although  the  analysis  may  be 
utterly  worthless.  At  the  same  time,  unless  indications  appear  that  the  analysis  is 
not  a  good  one,  it  must  be  taken  at  its  face  value.  A  good  summation  must  be  held 
as  evidence  of  good  analytical  work  as  far  as  it  goes.  On  the  other  hand,  as  has 
just  been  said,  very  low  or  very  high  results  are  proof  positive  that  that  analysis  is 
incorrect  in  some  particulars,  or  possibly  as  a  whole. 

A  low  summation  may  be  due  to  the  nondetermination  of  some  constituent,  to 
poor  methods,  to  carelessness  in  manipulation,  or  to  all  combined.  In  connection 
with  the  first  of  these  it  may.  be  remembered  that  the  determination  of  water  by 
“  loss  on  ignition  ”  tends  to  }deld  a  low  total,  owing  to  the  oxidation  of  the  ferrous 
iron  during  the  process.  This  will  reduce  the  apparent  weight  of  water  and  give  an 
unfavorable  summation,  though  the  other  essential  constituents  may  have  been  accu¬ 
rately  determined. 

It  must  also  be  borne  in  mind  that  a  low  summation  can  not  be  ascribed  to  the 
nondetermination  of  a  constituent  which  is  precipitated  and  weighed  with  others  that 
have  been  determined,  such  as  TiG2  and  P205  with  A1203,  or  SrO  with  CaO.  If  it  is 
due  to  incompleteness,  the  missing  constituent  must  be  sought  for  among  those  which 
are  determined  independent^  in  the  course  of  the  analysis,  such  as  C02,  S03,  Cl,  S, 
.or  BaO.  If  the  deficiency  be  marked  and  the  description  of  the  rock  indicates  that 
none  of  such  constituents  are  present,  the  low  summation  must  be  held  as  evidence  of 
error  somewhere  in  the  analytical  work. 

It  may  also  be  noted  in  this  connection  that  if  ferric  oxide  is  calculated  as 
ferrous  there  will  be  a  deficiency  of  one-ninth  of  its  weight,  due  to  the  loss  of 
oxygen,  and  the  converse.  Consequently,  if  the  iron  oxides  are  given  only  as  FeO, 
the  total  of  the  analysis  will  be  too  low  by  one-ninth  of  the  amount  of  ferric  oxide 
really  present.  And  conversely,  if  they  are  given  as  ferric  oxide,  the  sum  will  be 
too  high  by  one-tenth  of  the  ferrous  oxide.  If  the  amount  of  either  is  considerable, 
as  is  usually  the  case  in  very  femic  rocks,  the  nonseparation  of  iron  oxides  may  thus 
give  rise  to  an  apparently  poor  or  an  apparently  good  summation. 

In  the  case  of  analyses  of  rocks  containing  such  minerals  as  sodalite,  fluorite, 
much  biotite  or  apatite,  pyrite  or  pyrrhotite,  in  which  Cl,  F,  or  8  has  been  deter- 


«  Hillebrand,  Bull.  U.  S.  Geol.  Survey  No.  148,  1897,  p.  62. 


SUMMATION  OF  THE  ANALYSIS. 


35 


mined,  it  must  be  remembered  that  an  equivalent  amount  of  oxygen  is  to  be  deducted 
from  the  oxides  of  sodium,  calcium,  or  ferrous  iron,  to  arrive  at  a  correct  result.  If 
the  amount  of  these  constituents  is  considerable,  an  apparently  high  summation  may 
be  found  in  reality  to  be  perfectly  satisfactory,  while  one  which  lies  within  the 
assigned  limits  may  prove  to  be  too  low. 

In  the  case  of  a  summation  higher  than  that  allowable,  it  is  possible  that  this 
may  be  due  to  the  determination  of  iron  oxides  as  Fe20:!  only,  the  excess  being 
attributable  to  the  excess  of  oxygen  in  this  over  that  in  FeO,  as  just  explained.  Or 
it  may  be  due  to  the  fact  that  no  correction  has  been  made  for  the  oxygen  equivalent 
to  Cl,  F,  or  S,  also  mentioned  above. 

In  the  absence  of  these  two  possibilities,  the  high  summation  can  be  attributed 
onl}r  to  analytical  errors,  such  as  impure  reagents,  imperfect  washing  of  precipitates, 
incomplete  ignition,  a  dusty  laboratory,  and  the  like.  No  explanation  based  on 
incompleteness  and  the  nondetermination  of  some  constituent  will  apply  here,  and, 
if  the  excess  above  the  allowable  limit  be  at  all  considerable,  the  evidence  of  careless 
work  is  strong. 

Furthermore,  in  all  cases  of  high  or  low  summation,  it  must  be  remembered 
that  the  excess  or  deficiency  can  not  be  distributed  among  all  the  constituents,  since 
“it  is  more  than  likely  to  affect  a  single  determination. ”a 

It  must  be  borne  in  mind  that  the  importance  of  the  summation  in  rating  an 
analysis  lies  in  the  fact  that  it  is  itself  presumptive  evidence  of  good  or  poor 
analytical  work  somewhere  or  all  through  the  analysis.  Thus,  if  the  sum  falls  within 
fihe  limits  assigned  for  good  work,  the  analysis  is  presumably  good,  provided  that  no 
marked  discrepancy  is  evident  between  the  analysis  and  the  described  mode,  that  the 
degree  of  completeness  is  satisfactory,  and  that  there  is  no  other  evidence  tending  to 
throw  doubt  on  the  results. 

On  the  other  hand,  if  the  sum  is  considerably  below  or  above  these  limits,  the 
evidence  is  much  stronger  than  the  apparently  slight  departure  of  a  fraction  of  1  per 
cent  from  the  limits  might  at  first  sight  seem  to  indicate  that  some  error  or  errors 
have  been  made,  and  that  consequently  the  character  of  the  analytical  work  as  a 
whole  is  open  to  suspicion.  Thus  a  low  summation  of  99.00  may  be  due  to  the 
nondetermination  of  some  constituent.  In  the  absence  of  evidence  to  this  effect,  we 
can  only  conclude  that  some  error  has  been  made.  This  departure  of  but  half  a  per 
cent  from  the  limit  of  the  standard  of  good  work  may  affect  either  the  silica  or  the 
alumina,  those  constituents  present  in  largest  amount,  and  may  not  seriously  affect 
the  value  of  the  analysis;  or  it  may  affect  some  constituent  present  in  less  amount, 
thus  being  relatively  of  greater  influence;  or  it  may  be  distributed  among  several 
constituents.  We  have  no  means  of  deciding  in  the  vast  majority  of  cases,  but  we 


a  Hillebrand,  Bull.  U.  S.  Geol.  Survey  No.  148,  p.  63.  Cf.  Appendix  to  Fresenius’s  Quantitative  Analysis. 


36 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


must  conclude  that  as  the  work  is  certainly  incorrect,  even  to  so  small  an  extent,  in 
some  particular,  it  may  be  (and  we  are  almost  justified  in  assuming  that  it  is)  incorrect 
in  others,  and  possibly  all  through. 

Summations  somewhat  above  or  below  the  normal  limits  are  excusable  in  analyses 
of  many  minerals  or  of  meteorites  where  the  material  available  is  scanty  and  the 
allowable  possible  limits  of  error  are  consequently  considerably  greater  than  where 
the  material  is  ample,  as  is  generally  true  of  igneous  rocks.  It  must  also  be  remem¬ 
bered,  in  the  case  of  minerals,  that  their  analyses  may  be  checked  by  their  agreement 
with  the  known  calculated  chemical  composition.  In  the  case  of  rocks,  on  the  other 
hand,  we  have,  in  the  vast  majority  of  instances,  no  such  check,  for  adequately  exact 
data  as  to  the  relative  amounts  of  the  constituent  minerals  are  seldom  given.  If, 
therefore,  the  analysis  of  a  rock  is  satisfactorily  complete,  there  is  no  excuse,  as  Dr. 
Hillebrand  remarks,  for  a  summation  that  does  not  fall  within  the  somewhat  liberal 
limits  here  assigned. 

EXTERNAL  EVIDENCE. 

Analyst . — Of  the  factors  that  may  come  under  this  head  the  analyst  himself  is 
the  most  important.  For  several  reasons,  however,  this  factor  can  be  used  only 
with  great  caution  and  as  subsidiary  to  other  criteria.  That  is,  an  analyst  is  to 
be  judged  by  his  work  rather  than  the  work  judged  by  the  analyst.  While  as  a 
general  proposition  it  may  be  said  that  the  work  of  a  beginner  will  probably  not 
be  so  good  as  that  of  an  experienced  analyst,  yet  exceptions  do  occur;  so  that  we 
must  not  be  too  sweeping  in  our  judgment  of  the  analyses  of  a  student  unless 
they  show  definite  signs,  of  poor  work.  It  may  also  happen  that  an  experienced 
analyst  turns  out  a  number  of  analyses  which  are  manifestly  incorrect,  probably 
owing  to  the  employment  of  poor  methods  or  reagents.  In  this  case  his  long- 
experience  will  count  for  little,  and  a  rock  analysis  made  by  him  which  can  not 
be  checked  by  comparison  with  the  mode  will  be  looked  on  with  misgivings. 

Methods. — The  methods  employed  are  so  seldom  stated  that  they  are  not  often 
available  as  a  basis  of  judgment.  When  known,  however,  the  petrographer  who 
is  experienced  in  rock  analysis  will  be  able  to  form  an  opinion  of  the  value  of 
the  determinations  affected  by  them. 

Indirect  evidence. — Evidence  of  an  indirect  nature  is  sometimes  afforded  by 
analyses  of  the  same  or  similar  rocks  by  other  analysts,  which  may  either  cor¬ 
roborate  or  discredit  that  under  consideration.  It  may  also  happen,  as  mentioned 
above,  that  some  analyses  of  a  series  show  evident  signs  of  error,  when  the 
presumption  is  strong  that  the  others  are  also  subject  to  the  same  error  unless 
they  can  be  checked  by  comparison  with  the  mode. 


RATING  OF  ANALYSES. 


37 


COMPLETENESS. 

It  is  obvious  that  to  express  fully  and  accurately  the  composition  of  a  rock  the 
correct  amount  of  each  constituent  present  must  be  determined.  It  follows  that, 
in  general,  the  more  constituents  determined  the  more  closely  will  the  analysis 
represent  the  composition  of  the  rock.  This,  however,  is  subject  to  the  limitations 
that  some  rocks  are  of  such  simple  composition  that  they  contain  only  a  few  chemical 
constituents,  and  that  the  statement  of  figures  for  all  constituents  possibly  present 
is  by  no  means  a  guaranty  that  they  have  been  correctly  determined.  Assuming, 
however,  that  the  analysis  is  accurate,  and  that  the  rock  is  of  more  or  less  complex 
composition,  as  is  usually  the  case,  we  may  briefly  discuss  the  relative  importance 
of  the  various  constituents  in  the  rating  of  analyses. 

Speaking  generally,  and  bearing  in  mind  the  possible  occurrence  of  rocks 
containing  large  amounts  of  minerals  usually  regarded  as  rare  or  which  are  usually 
only  sparingly  present,  it  may  be  laid  down  that  for  the  most  satisfactory  work 
every  constituent  should  be  determined  which  is  present  in  greater  amount  than 
mere  traces,  as  already  defined,  or  the  knowledge  of  whose  absence  or  presence, 
even  in  minute  quantity,  is  of  importance  to  our  study  of  the  rock  or  to  the  object 
of  the  investigation. 

Th  is  will  include  the  nine  main  constituents  that  are  almost  universally  present 
and  whose  absence  is  a  matter  of  great  interest;  that  is,  Si02.  A120;),  Fe203,  FeO, 
MgO,  CaO,  NaaO,  K20,  and  H„0.  The  iron  oxides  should  be  separately  determined, 
or  the  absence  of  one  or  the  other  should  be  shown,  even  in  the  case  of  the  most 
salic  rocks,  though  it  must  be  borne  in  mind  that  the  importance  of  this  separate 
determination  increases  with  increase  of  the  femic  components.  Likewise,  the 
alkalies  should  always  be  determined,  of  course  separately,  and  even  in  the  case  of 
the  most  femic  rocks  their  presence  in  traces  or  their  complete  absence  should  be 
definitely  proved.  CaO  and  MgO  should  also  be  determined,  even  though  they 
exist  actually  as  traces,  as  defined  above.  H20  should,  in  general,  be  determined 
directly,  and  not  by  “loss  on  ignition,”  but  the  distinction  between  that  below  and 
that  above  110°  is  not  usually  essential,  yet  is  always  advisable.  C02  should, 
however,  be  determined  if  the  rock  is  not  fresh. 

After  these  it  is  of  next  importance  to  know  the  amounts  of  the  so-called  minor 
constituents  which  are  present  in  notable  amount.  This  will  include  Ti02  and  P206 
in  nearly  all  rocks,  except  the  most  salic  ones,  Cl  and  SO:j  in  rocks  rich  in  sodalite, 
noselite,  or  haiiyne,  S  in  a  good  many  femic  rocks,  Zr02  in  rocks  with  nephelite,  much 
eudialyte,  or  zircon,  Cr203  and  NiO  in  many  dofemanes  and  perfemanes,  etc. 

Of  course  any  one  of  these  may  at  times  assume  the  importance  of  one  of  the 
nine  main  constituents,  as  Ti02  in  ores  produced  by  segregation  or  differentiation, 


38 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


Cl  and  S03  in  such  rocks  as  tailin' rite,  tawite,  and  the  hauynophyr  of  Melfi,  P205 
in  the  apatite-syenites  of  Finland,  or  Cr203  in  many  dunites. 

Coming-  next  to  the  constituents  present  in  only  very  small  amount,  the  most 
important  are  Ti02  and  P206,  especially  the  former.  These  are  both  almost  always 
present,  and  are  also  of  special  importance  because  their  estimation  affects  that  of  the 
highly  important  A1203,  as  already  explained.  In  fact,  on  this  account  these  two 
should  always  be  determined  if  the  analysis  is  to  be  considered  a  good  one.  MnO, 
although  also  nearly  always  present,  is  of  comparatively  little  influence,  and  its 

w 

determination  or  not,  for  reasons  explained  above,  should  not  be  held  to  affect 
seriously  the  rating  of  the  analysis. 

Of  the  other,  generally  rare  or  very  minor,  constituents,  such  as  Zr02,  Cr203, 
NiO,  BaO,  SrO,  little  need  be  said.  Except  as  they  assume  an  important  role,  as 
already  mentioned,  they  scarcely  affect  th'e  value  of  an  analysis  for  general  purposes. 
Still,  since  they  are  or  may  be  of  great  importance  for  the  study  of  certain  broad  and 
as  yet  undeveloped  problems,  and  as  their  determination,  other  things  being  equal, 
is  evidence  of  careful  and  thorough  analytical  work,  analyses  in  which  they  are 
reported  must  be  rated  higher  than  those  in  which  they  do  not  appear. 

RATING  ADOPTED  IN  THE  TABLES. 

We  come  now  to  the  practical  application  of  the  foregoing  remarks — that  is,  a 
concise  expression  of  our  judgment  of  the  value  of  any  given  analysis,  based  on  the 
features  described.  We  have  been  accustomed  to  do  this  in  a  rough  way  by  calling 
analyses  good,  or  poor,  or  bad.  But  there  seems  to  be  a  growing  need  of  making 
these  terms  more  precise,  of  defining  their  meaning  more  exactly. 

As  a  preliminary,  the  fact  must  be  recognized  that  while  the  features  discussed 
permit  of  a  fairly  accurate  judgment  in  many  cases,  in  others  some  or  all  of  them 
are  not  available,  and  the  analysis  must  be  taken,  so  to  speak,  at  its  face  value. 

Thus  it  frequently  happens,  especially  with  the  prevalent  almost  purely  quali¬ 
tative  descriptions,  that  we  can  form  no  estimate  of  the  correspondence  of  the 
analysis  with  the  mode.  In  a  gabbro,  for  instance,  of  which  it  is  merely  known  that 
the  constituent  minerals  are  labradorite  and  augite,  the  analysis  may  show  high 
A1203  and  low  MgO.  This  may  be  due  to  the  common  error  in  the  separation  of 
these  two;  or  again,  it  may  be  due  to  the  fact  that  the  rock  is  very  salic,  so  that  the 
anorthite  molecule  is  very  abundant  and  the  alferric  mineral  present  in  small  amount, 
though  the  rock  would  be  called  a  gabbro,  equally  with  a  very  femic  one,  in  the 
present  vague  and  qualitative  systems.  In  the  flrst  case  the  analysis  would  not,  and 
in  the  second  case  it  would,  correspond  with  the  mode,  and  the  analysis  would  be, 
respectively,  either  incorrect  or  correct.  But  in  the  absence  of  some  evidence  to 
determine  the  matter,  such  as  an  indication  of  the  quantitative  relations  of  the  two 
minerals  in  the  description,  we  should  have  no  means  of  deciding  tne  question 


EATING  ADOPTED. 


39 

provided  that  CaO  was  high  enough,  and  if  the  analysis  were  otherwise  good  we 
should  scarcely  be  justified  in  rejecting  it  on  this  account. 

We  must  also  make  the  general  assumptions,  in  the  absence  of  evidence  to  the 
contrary,  that  the  material  analyzed  is  representative  of  the  rock-mass,  and  that  the 
analyst  is  competent  and  the  methods  employed  reliable. 

Admitting  these  serious  defects  in  the  case  of  many  present-day  anal}rses,  and 
the  fact  that  any  such  concise  characterization  is  necessarilv  to  a  large  extent  arbi- 
trary,  I  venture  to  propose,  and  have  used  throughout  the  collection,  the  following 
scheme  as  a  practical  method  for  the  expression  of  the  rating  of  analyses. 

The  method  is  closely  analogous  to  that  of  Bradstreet  in  rating  the  credit  of 
mercantile  houses  in  the  United  States,  which,  indeed,  suggested  the  present  form 
of  the  scheme.  In  commercial  rating  the  credit  of  a  firm  is  dependent  on  two 
factors — the  amount  of  capital  invested  or  at  command  and  the  personal  character 
and  reputation  of  the  individuals.  The  rating  or  credit  will  be  high  as  the  personal 
character  and  the  capital  both  approach  the  maximum. 

Following  out  this  analogy,  and  leaving  external  evidence  aside,  our  judgment  of 
analyses  is  chiefly  dependent  on  two  factors — the  accuracy  and  the  completeness. 
For  the  purposes  for  which  rock  analyses  are  used  each  of  these  compensates  or 
may  replace  the  other  to  a  certain  extent.  Thus  if  the  analysis  is  not  very  complete, 
this  fault  may  be  partially  compensated  for  by  the  accuracy  of  the  determinations 
which  have  been  made,  and,  conversely,  if  the  accuracy  of  some  of  the  determi¬ 
nations  is  not  entirely  satisfactory,  a  complete  determination  of  all  the  constituents 
may  partially  make  up  for  it.  This,  of  course,  within  reasonable  limits.  Further¬ 
more,  the  higher  the  standard  of  each  factor  the  more  valuable  will  be  the  analysis. 

To  express  the  degree  of  accuracy  the  letters  A,  B,  C,  D  are  used,  and  for  the 
degree  of  completeness  the  figures  1,  2,  3,  4.  These  are  used  in  combinations  of  a 
letter  and  a  figure,  the  former  preceding,  since,  in  general,  the  degree  of  accuracy 
is  of  more  importance  than  that  of  completeness.  The  bases  on  which  these  are 
assigned  are  as  follows,  the  limitations  and  often  the  arbitrary  character  of  the  scheme 
being  understood: 

A  is  used  when  the  analysis  gives  evidence  of  the  highest  degree  of  accuracy, 
that  is,  when  it  corresponds  well  with  the  mode,  and  when  the  summation  is  between 
the  limits  99.50  and  100.75.  When  the  analyst  is  of  the  first  rank  and  when  the 
methods  are  known  to  be  of  the  best,  this  is  additional  reason  for  the  assignment  of 
this  letter.  It  must  be  understood,  however,  that  in  the  collection  I  have  carefully 
refrained  from  the  use  of  the  personal  competence  of  the  analyst  in  the  assignment  of 
ratings,  as  this  is  often  a  difficult,  and  always  a  delicate  matter.  So,  with  the  excep¬ 
tion  of  a  few  cases  where  the  methods  or  general  results  were  known  to  be  not  very 
reliable  or  positively  bad,  I  have  used  only  the  purely  impersonal  features  of  each 
analysis  in  deciding  its  rating. 


40 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


B  may  be  assigned  when  the  analysis  and  the  mode  correspond  and  when  the 
summation  is  between  99.50  and  99,  or  between  100.T5  and  101.25.  Due  allowance 
must,  however,  be  made  here  as  elsewhere,  in  the  case  of  low  summations,  for  the 
effect  of  the  nondetermination  of  certain  constituents,  as  already  explained,  and  in 
the  case  of  high  ones  for  the  correction  to  be  applied  in  the  presence  of  Cl  or  S. 

C  applies  when  the  analysis  corresponds  fairly  well,  or  varies  but  little  from  the 
mode,  or  when  the  sum  is  between  99  and  98.50,  or  between  101.25  and  101.75. 

D  is  to  be  used  when  the  analysis  varies  decidedly  from  the  mode  in  any  impor¬ 
tant  particular,  or  when  the  sum  is  below  98.50  or  above  101.75.  It  also  applies 
when  the  methods  for  the  determination  of  important  constituents  are  known  to  be 
bad,  or  when  an  analysis,  apparently  good,  is  made  up  by  combining  parts  or  the 
whole  of  two  or  more  poor  analyses. 

1  is  assigned  when  the  analysis  is  perfectly  complete  or  nearly  so,  as  when,  in 
addition  to  all  the  main  constituents  and  those  of  secondary  importance,  Zr02,  Cr.,03, 
NiO,  BaO,  SrO,  and  the  like,  or  several  of  them,  are  determined  in  rocks  not  con¬ 
taining  notable  amounts  of  minerals  having  these  as  essential  components.  In  gen¬ 
eral  MnO  should  be  determined  for  this  rating,  but  not  necessarily  so,  and  the  same 
is  true  of  the  separate  determination  of  combined  and  hygroscopic  water,  though  the 
determination  of  water  as  ‘‘loss  on  ignition”  renders  this  rating  doubtful.  The 
iron  oxides  should  be  separately  determined  in  all  cases  to  have  this  figure  apply. 

2  will  be  used  when  all  the  main  constituents,  including  both  oxides  of  iron,  have 
been  determined,  as  well  as  the  constituents  of  secondary  importance,  including  Ti02 
and  P206  in  nearly  all  rocks,  Cl  and  S03  in  those  with  abundant  minerals  of  the 
sodalite  group,  and  so  on,  as  has  been  explained.  The  minor  constituents,  as  Zr02, 
BaO,  etc.,  are  not  determined  for  this  figure.  2  will  also  be  used  for  analyses  of 
salic  rocks  in  which  the  iron  oxides  are  present  in  small  amount  but  have  not  been 
separated,  and  which  are  otherwise  so  complete  as  to  fall  under  1. 

8  applies  to  analyses  in  which  the  main  constituents,  including  both  oxides  of 
iron,  have  been  determined,  but  not  Ti02,  P205,  Cl,  etc.  (or  the  minor  constituents), 
unless  minerals  rich  in  these  are  so  abundant  as  to  make  their  estimation  of  the  same 
importance  as  that  of  the  main  constituents.  3  also  includes  analyses  of  rocks  low 
in  iron  oxides,  in  which  these  have  not  been  separated,  but  which  are  otherwise 
complete  according  to  the  requirements  of  2. 

4  is  to  be  assigned  when,  in  all  rocks  except  those  very  low  in  them,  the  iron 
oxides  have  not  been  separated,  when  the  alkalies  or  other  constituents  are  deter¬ 
mined  by  difference  from  100  per  cent,  when  the  alkalies  are  not  separated,  when 
any  constituent  of  the  first  importance  is  not  determined,  when  the  analysis  has  been 
made  of  ignited  material  (not  including  drying  at  110°),  or  when  it  is  given,  without 
the  original  figures,  as  having  been  recalculated  on  a  water-  or  carbonic-acid-free 
basis. 


HATING  ADOPTED. 


41 


Under  the  working  plan  already  described,  one  of  these  factors  compensates  for 
the  other  to  a  certain  extent.  Thus  a  less  degree  of  completeness  is  compensated  for 
by  a  greater  degree  of  accuracy.  We  would  then  judge,  for  example,  an  analysis 
of  rating  A2  and  one  of  rating  Ill  to  be  of  about  equal  value.  This  is,  confessedly, 
only  true  within  limits,  and  must  be  used  with  judgment  and  with  a  recognition  of  its 
empirical  character. 

To  express,  then,  the  various  ratings  of  equal  value  we  can  employ  live  series  of 
terms  as  follows:  Excellent  or  first  rate,  good  or  second  rate,  fair  or  third  rate,  poor 
or  fourth  rate,  and  bad  or  fifth  rate.  Their  meanings,  in  terms  of  the  symbols 
chosen,  will  be  seen  in  the  subjoined  table,  ratings  of  the  same  value  falling  on  the 
same  horizontal  line. 


First  rate . 

Al 

Second  rate . 

.  A2 

Bl 

Third  rate . . . 

.'  A3 

B2 

Cl 

Fourth  rate . 

.j  A4 

B3 

C2 

Dl 

B4 

C3 

D2 

Fifth  rate . < 

C4 

D3 

. 

D4 

Excellent.  1 

Good.  [Superior. 

Fair. 


Poor. 

Bad. 


Inferior. 


In  other  words,  analyses  of  the  rating  Al— that  is,  perfectly  satisfactory  both  as 
to  accuracy  and  completeness. — would  be  called  either  “  excellent  ”  or  “  first  rate,”  the 
two  terms  being  synonymous.  An  analysis  to  which  is  assigned  the  rating  either  A2 
or  B1  would  be  spoken  of  as  “good”  or  “second  rate.”  One  with  either  of  the 
three  ratings  A3,  B2,  or  Cl  would  be  called  “fair”  or  “third  rate;”  one  with  the 
rating  A4,  B3,  C2,  or  Dl,  a  “poor”  or  “fourth  rate”  analysis;  while  one  worse 
than  these  would  be  “bad”  or  “  fifth  rate.” 

In  any  case,  it  must  be  remembered  that  accuracy  should  count  rather  more  than 
completeness,  since  often  an  approximate  correction  can  be  made  for  constituents  not 
determined,  as  in  the  case  of  Ti02  and  P205  affecting  A1203.  Consequently,  though 
of  the  same  general  rating,  an  analysis  to  which  may  be  assigned  the  symbols  A 2  is 
worth  rather  more  than  one  to  which  B1  applies,  and  similarly  with  those  assigned 
to  A3,  B2,  and  Cl  in  the  order  of  merit. 

As  a  mnemonic  convenience  it  may  be  useful  to  note  that,  replacing  the  letter 
indicating  accuracy  in  any  given  rating  by  its  serial  number  in  the  alphabet,  the  sum 
of  this  and  the  figure  indicating  completeness  will  be  one  unit  greater  than  the  rating 
of  the  analysis.  Thus  in  a  first  rate  analysis,  of  rating  Al,  the  sum  will  be  2;  in  a 
second  rate  analysis,  of  rating  A2  or  Bl,  the  sum  will  be  3;  in  a  third  rate  one,  of 
rating  A3,  B2,  or  Cl,  the  sum  will  be  4.  In  the  case  of  fifth  rate  analyses,  however, 
the  sum  may  be  greater  than  6,  as,  for  instance,  in  the  rating  D4,  where  it  will  be  8. 


42 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


As  will  be  .seen  presently,  analyses  of  the  first  three  ratings — that  is,  excellent, 
good,  or  fair — are  worthy  of  use  in  petrological  discussions,  while  those  of  the 
fourth  or  fifth  rate,  poor  or  bad,  are  of  little  or  no  use.  In  order  to  be  able  to 
distinguish  between  the  two  it  will  be  well  to  have  some  short  terms  expressing 
the  difference.  I  would  suggest,  therefore,  that  excellent,  good,  and  fair  analyses 
be  spoken  of  collectively  as  superior,  while  poor  and  bad  ones  will  be  inferior. 

It  may  be  advisable  to  extend  these  ratings  by  using,  for  instance,  E  for  a  still 
lower  degree  of  accuracy  and  5  for  an  analysis  hopelessly  incomplete.  Thus,  E 
might  be  used  when  the  alumina  and  magnesia,  the  iron  oxides,  and  the  alkalies  are 
all  manifestly  incorrect,  or  when  the  sum  is  below  98.00  or  above  102.00;  for  a 
number  of  such  analyses  may  be  found.  Similarly  5  might  apply  when  the  iron 
oxides  are  not  separately  determined  and  also  when  the  alkalies  are  given  by 
“difference.”  But  E  and  5  have  not  been  used  here,  because  this  scheme  of  rating 
is,  in  a  way,  tentative,  and  also  for  the  reason  that  when  an  analysis  is  so  bad  as 
to  call  for  a  D  or  a  4  it  seems  scarcely  worth  while  to  indicate  further  degrees  of 
inferiority. 

On  the  other  hand,  it  may  be  advisable  in  the  future  to  indicate  a  higher  degree 
of  accuracy  or  completeness  than  is  generally  implied  by  A  and  1.  Thus,  while 
A  will  apply  to  the  general  run  of  excellently  accurate  work,  we  might  wish  to 
distinguish  that  of  a  still  higher  order,  as  the  best  of  that  which  Drs.  Hillebrand, 
Stokes,  and  Steiger  have  done.  This  may  be  accomplished  by  the  use  of  A*.  Sim¬ 
ilarly  it  may  be  useful  to  discriminate  analyses  having  such  a  degree  of  completeness 
as  is  found  in  Hillebrand’s  analyses  of  the  rocks  of  the  Leucite  Hills,  in  which 
everything  possibly  present  has  been  determined,  from  those  in  which  some,  but 
not  all,  of  the  rarer  constituents  have  been  estimated.  This  would  involve  the  use 
of  1*.  A  combination  of  A*  and  1*  might  be  called  “perfect,”  the  word  being 
used  subject  to  human  limitations.  There  does  not  as  yet  seem  to  be  much  need  of 
this  distinction,  though  it  will  undoubtedly  be  more  advisable  in  the  future  than 
the  discrimination  between  degrees  of  badness,  as  just  described. 

In  using  these  ratings  it  must  be  remembered  that  they  indicate  the  general 
character  of  the  analysis.  Some  features  may  justify  us  in  calling  the  analysis  as  a 
whole  either  poor  or  bad,  and  yet  it  will  be  of  use  in  a  limited  way.  Thus,  the  iron 
oxides  may  not  be  separated,  or  the  common  error  may  be  made  in  regard  to  alumina 
and  magnesia,  so  that  the  analysis  must  be  rated  as  fourth  or  fifth  rate,  taken  as  a 
whole.  At  the  same  time  it  may  be,  as  often  happens,  that  the  lime  and  alkalies,  for 
instance,  have  been  correctly  determined,  as  well  as  the  silica,  so  that  for  purposes 
in  which  only  these  determinations  are  of  importance  the  analysis  may  be  useful  to 
this  extent.  But,  notwithstanding  this,  in  view  of  the  evident  errors  present,  the 
analysis  can  not  be  regarded  as  satisfactory. 


DISCUSSION  OF  THE  TABLES. 


43 


The  question  now  arises  as  to  what  ratings  are  practically  of  use.  Leaving  out 
of  account  cases  such  as  those  just  mentioned,  where  utility  attaches  to  some  single 
determinations,  it  may  be  held  that,  for  general  purposes,  only  first  or  second  rate 
(excellent  or  good)  analyses  should  be  countenanced  or  used  by  petrographers. 
The  high  standard  set  by  the  chemists  of  the  United  States  Geological  Survey  should 
be  adopted  by  all,  and  the  chemical  side  of  petrology  should  be  established  on  as  firm 
and  satisfactory  a  basis  as  is  the  microscopical. 

At  the  same  time  it  will  very  frequently  happen  that  an  otherwise  good  analysis 
in  which  the  more  important  of  the  minor  constituents  have  not  been  determined, 
such  as  Ti02  and  Po05,  will  be  of  use  for  very  many  purposes,  such  as  the  classifi¬ 
cation  of  the  rock.  Third  rate  or  “fair”  analyses  may  therefore  be  considered 
usable,  especially  if  of  high  rate  as  to  accuracy,  since,  in  many  cases,  corrections  may 
be  applied  for  constituents  which  have  not  been  determined. 

Excellent,  good,  and  fair  (superior)  analyses  may  therefore  be  considered 
usable,  while  poor  or  bad  (inferior)  ones  must  be  rejected  in  an}r  discussion,  unless 
the  elucidation  of  a  special  point  for  which  some  of  the  reliable  determinations  may 
serve  is  the  only  question  at  issue. 


DISCUSSION  OF  THE  TABLES. 

DIVISION  INTO  PARTS. 

As  will  be  explained  below,  it  was  desired  to  arrange  the  analyses  embraced  in 
the  collection  according  to  the  new  system  of  classification.  For  the  majority  of 
analyses  of  course  this  was  perfectly  feasible,  but  it  vTas  soon  seen  on  critical  study 
of  them  all  that  only  a  part  could  or  should  be  thus  treated. 

There  were  found  to  be,  for  instance,  a  surprisingly  large  number  in  which  the 
iron  oxides  had  not  been  determined.  While  this  is  of  comparatively  small  impor¬ 
tance  in  analyses  of  persalanes,  wThere  these  constituents  are  present  onl}T  to  the 
amount  of  1  or  2  per  cent,  it  becomes  a  most  serious  matter  in  the  other  classes. 
Indeed,  if  the  iron  oxides  amount  to  more  than  about  2  per  cent  and  are  not  separately 
determined,  it  is  generally  impossible  to  classify  the  rock  with  certainty,  since  some 
assumption  must  be  made  as  to  the  real  state  of  oxidation  of  the  iron,  and  this  will 
not,  in  all  likelihood,  be  in  accordance  with  the  facts. 

If  the  iron  is  assumed  to  be  present  as  ferric  oxide  alone,  this  must  be  cal¬ 
culated  to  find  the  norm  as  hematite,  thus  freeing  an  amount  of  silica  equivalent 
to  the  ferrous  iron  really  present,  which  will  alter  the  relative  amounts  of  the  other 
minerals,  or  change  lenads  into  polysilicate  feldspars,  or  olivine  into  hypersthene. 
On  the  other  hand,  if  all  the  iron  is  assumed  to  be  ferrous,  which  we  have  established 
as  the  rule  to  follow  in  such  cases  for  the  sake  of  uniformity,  an  amount  of  silica  will 
be  needed  to  satisfy  this  which  w  ould  not  be  used  if  part  of  the  iron  were  ferric,  and  this 
would  have  the  reverse  effect  on  the  other  normative  minerals  to  that  just  mentioned. 


44 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


It  will,  of  course,  be  equally  at  variance  with  the  probably  true  state  of  affairs  to 
make  any  other  intermediate  assumption,  such  as,  for  instance,  that  ferric  and  ferrous 
oxides  are  present  in  equal  amount,  the  iron  being-  thus  assumed  to  be  present  in  the 
rock  only  in  the  form  of  magnetite.- 

We  are  therefore  compelled  to  reject  nearly  all  such  analyses  for  the  purpose  of 
classifying  the  rocks  of  which  they  have  been  made,  as  we  have  previously  stated.® 
Along  with  them  must  go  a  large  number  in  which  it  is  certain  that  the  alumina  is 
much  too  high  and  the  magnesia  correspondingly  low,  or  in  which  we  know,  from 
the  descriptions,  that  there  must  be  a  very  notable  amount  of  Ti02  which  has  not 
been  determined,  and  which  consequently  serves  to  raise  the  apparent  amount  of 
alumina.  In  these  cases  the  salic  lime,  and  therefore  the  normative  anorthite,  will 
be  too  high  and  the  classificatory  position  of  the  rock  consequently  false. 

The  point  may  be  raised  that  this  is  a  serious  objection  to  the  new  system  of 
classification,  which  thus  demands  the  determination  of  these  constituents  in  the 
analyses.  In  the  old  si^stems  such  imperfect  analyses  could  be  and  were  used,  or 
inserted  in  papers,  though  they  were  admittedly  faulty  in  these  respects.  To  the 
critic,  however,  who  examines  the  question  in  an  unprejudiced  way,  this  will  be  seen 
to  be  not  an  objection,  but  really  a  very  strong  point  in  favor  of  the  new  system. 
For  it  postulates  as  fundamental  to  the  classification  the  absolute  necessit}-  for  .only 
the  best  class  of  analytical  work.  And  it  is  a  self-evident  fact  that  this  science,  like 
any  other,  must  be  satisfied  with  only  the  highest  class  of  data  in  all  its  departments. 
The  admission  of  admittedly  defective  elements  into  any  classification  only  tends  to 
weaken  the  whole  and  to  delay  the  progress  of  the  science. 

There  were  also  found  a  very  large  number  of  analyses  that  were  obviously  so 
bad  in  other  respects  as  to  be  almost  or  wholly  worthless.  It  is  needless  to  cite 
instances.  They  may  be  found  throughout  the  whole  of  Part  II. 

Analyses  of  tuffs  and  ashes,  and  of  rocks  so  badly  decomposed  as  to  be  far  from 
their  original  composition,  were  also  found  in  abundance.  Though  many  of  these 
are  analyses  of  the  highest  ratings,  }Tet  they  obviously  were  of  no  use  for  purposes 
of  classification,  and  hence  could  not  logically  be  correlated  with  those  of  massive  or 
unaltered  rocks. 

The  problem  as  to  what  should  be  done  with  all  these  cripples  and  invalids  was 
finally  solved  by  resort  to  segregation  from  the  sound  and  healthy  analytical  individ¬ 
uals,  and  the  collection  was  divided  into  two  parts. 

Part  I—  Here  are  to  be  found  all  the  superior  analyses,  of  the  first  three  rat¬ 
ings,  excellent,  good,  and  fair,  except  those  of  tuffs,  ashes,  and  more  than  slightly 
decomposed  rocks.  With  them  were  also  put  a  few  inferior  analyses  of  the  last  two 

«  Cross,  Iddings,  Pirsson,  Washington,  Jour.  Geol.,  Vol.  X,  1901’,  p.  046;  also  The  Quantitative  Classification  of  Igneous 
Rocks,  1903,  p.  190. 


DISCUSSION  OF  THE  TABLES. 


45 


ratings,  poor  and  bad,  which  were  deemed  to  be  of  especial  interest  and  importance, 
or  which  were  almost  the  only  examples  available  for  illustrating  the  chemical  and 
mineralogical  composition  of  the  divisions  into  which  they  seemed  to  fall.  Although, 
as  a  general  rule,  analyses  in  which  the  iron  oxides  had  not  been  separately  deter¬ 
mined  were  rejected  from  this  part,  yet  in  the  persalane  class  a  number  of  otherwise 
good  ones  were  inserted,  since  the  total  amount  of  these  oxides  was  small,  and  the 
neglect  of  their  separation  would  not  affect  their  classificatory  position.  For  reasons 
to  be  given  later,  all  these  analyses  in  Part  I  were  classified  according  to  the  new 
system,  but  the  position  of  rocks  of  which  the  analyses  are  untrustworthy  for  any 
reason  must  be  regarded  as  merely  provisional,  and  subject  to  alteration  in  the 
future  on  the  basis  of  new  and  better  analyses. 

Part  II. — In  this  part  were  placed  all  the  inferior  analyses  of  the  last  two 
ratings,  poor  and  bad,  except  those  admitted  to  Part  I  for  reasons  just  given.  These 
analyses  to  be  found  in  Part  II  will  include  bj7  far  the  greater  portion  of  those  in 
which  the  iron  oxides  have  not  been  separated,  especially  those  of  rocks  belonging  to 
Classes  II,  III,  IV,  and  V.  As  has  been  seen,  some  of  those  which  are  faulty  in 
this  respect,  but  which  are  of  persalane  rocks,  are  to  be  found  in  Part  I.  Analyses 
of  tuffs  and  ashes  and  of  decomposed  or  altered  rocks  were  also  placed  in  Part  II, 
even  though  they  are  of  the  highest  rating. 

The  analyses  in  Part  II  are  classified  according  to  the  scheme  given  in  Zirkel’s 
Lehrbuch  (I,  1893,  p.  820).  This  was  adopted  in  preference  to  the  system  of  Rosen- 
busch,  because  it  is  primarily  based  on  chemical  distinctions  to  a  greater  extent  than 
the  other,  which  gives  structure  and  geological  mode  of  occurrence  the  more  funda¬ 
mental  position.  According  to  the  order  which  Zirkel  follows  in  his  text-book,  the 
granites,  the  quartz-porphyries,  and  the  rhyolites,  for  instance,  come  close  after  one 
another,  while  according  to  Rosenbuscli  they  would  be  widely  separated.  As  this  is 
a  collection  of  rock  analyses,  the  presumable  main  use  of  which  will  be  their  correla¬ 
tion,  Zirkel’s  arrangement  was  deemed  to  be  the  most  advisable  to  adopt. 

The  analyses,  then,  in  Part  II  will  follow  in  the  sequence  given  in  the  tables  of 
contents  of  the  second  and  third  volumes  of  Zirkel’s  Lehrbuch.  But  some  new 
types,  which  have  been  described  or  named  since  the  appearance  of  that  work,  or 
which  were  omitted  from  it,  have  been  placed  in  this  system  where  they  seem  to 
belong  most  logically,  or  in  the  position  the}7  should  take  as  indicated  by  Rosenbusch. 
In  cases  of  uncertainty  on  the  part  of  the  reader  the  index  to  the  old  rock  names 
will  be  found  useful. 

Within  each  of  Zirkel’s  groups,  whether  large  or  small,  the  analyses  are 
arranged  on  a  geographical  basis,  which  is  that  followed  in  Part  I,  and  a  description 
of  which  will  be  found  on  page  64.  The  rock  names  used  in  each  case  are  those 
given  by  the  original  authors. 


46 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


BASIS  OF  ARRANGEMENT  OF  ANALYSES. 

ATTEMPTED  USE  OF  CURRENT  PETROGRAPHIC  SYSTEM. 

When  this  collection  was  first  started,  two  or  three  years  ago,  the  analyses  were 
classified  according  to  the  system  of  Rosenbusch.  Generally  the  name  given  by  the 
author  to  the  rock  was  adopted,  but  in  many  cases  the  name  seemed  to  me  to  have 
been  wrongly  applied,  when  I  took  the  liberty  of  renaming  the  rock,  keeping  the 
author’s  name  in  brackets.  As  the  collection  progressed  this  became  a  frequent 
occurrence,  as  was  by  no  means  surprising  in  view  of  the  loose  principles,  the 
subjective  and  qualitative  character,  and  the  vague  definitions  of  the  systems  in 
vogue.  It  furnished  a  most  striking  illustration  of  their  illogical,  inconsistent,  and 
unsatisfactory  character,  and  was  a  most  cogent  argument  against  their  continued 
use.  It  indicated,  indeed,  that  there  was  in  realit}^  no  one  system  to  which  one 
could  turn  for  guidance,  but  that  each  petrographer  had  been  forced  to  set  up  his 
own  standards  to  some  extent,  to  make  his  own  definition  of  manj^  of  the  terms  in 
use,  or  to  assign  his  own  limits  to  them,  which  might  or  might  not  correspond  with 
those  of  others — in  a  word,  partially  to  make  his  own  classification  and  nomenclature. 
Each  was  a  hodgepodge,  made  up  of  bits  taken  from  this  or  that  authority,  or  evolved 
from  the  individual  author’s  own  ideas.  There  was  seldom  if  ever  any  broad  prin¬ 
ciple  which  one  could  apply  throughout,  and  the  result  was  a  clashing  of  principles, 
inconsistencies  everywhere,  and  a  lack  of  harmony  and  even  development.  If  one 
had  been  engaged  on  a  certain  group  of  rocks  the  private  classification  in  that  group 
would  be  very  detailed,  while  in  other  more  neglected  spots  the  names  given 
would  be  few,  and  the  classification  of  some  authority  would  be  used  with  no 
critical  estimate  of  its  applicability  and  no  thought  of  its  logical  consistency  with 
the  other  more  detailed  and  familiar  parts  of  the  scheme. 

Everyone  has  recognized  this  vaguely,  but  it  is  forced  upon  one  when  a  large 
collection  of  rock  analyses  is  undertaken  and  a  careful  comparison  is  made  between 
the  descriptions  and  analyses  and  the  names  applied  b}T  the  many  writers  consulted. 

Roth"  has,  though  much  more  concisely,  expressed  somewhat  similar  views  as  to 
the  condition  of  affairs,  and  is  inclined  to  think  that  no  one  system  will  ever  receive 
general  acceptance.  The  present  writer  is  less  pessimistic,  and  regards  the  lack  of 
any  universally  adopted  system  of  classification  as  due  less  to  the  difficulties  caused 
by  the  characters  of  rocks  than  to  the  general  lack  of  appreciation  of  the  necessity 
for  logical  and  consequent  principles,  and  to  a  natural  disposition  to  patch  up  the  old 
rather  than  to  substitute  something  totally  new,  even  though  better. 


a  Roth,  J.,  Chem.  Geol.,  Vol.-II,  1883,  p.  41.  Cf.  Cross,  W.,  Jour.  Geol.,  Vol.  X,  1902,  p.  473. 


DESCRIPTION  OF  THE  QUANTITATIVE  CLASSIFICATION. 


47 


ADOPTION  OF  THE  QUANTITATIVE  SYSTEM. 

During  the  progress  of  the  collection  the  writer  became  interested,  with  Cross, 
Iddings,  and  Pirsson,  in  the  working  out  of  the  system  of  classification  and  nomen¬ 
clature  of  igneous  rocks  which  has  been  recently  proposed  by  us.  In  the  course  of 
this  work  the  growing  collection  of  analyses  was  continually  appealed  to,  the  modes 
of  many  of  the  analyses  were  calculated,  arid  they  were  shifted  and  rearranged  from 
time  to  time  to  test  the  various  propositions  or  suggested  lines  of  classification  till  all 
agreement  with  any  system  at  present  in  use  was  lost. 

After  having  arrived  substantially  at  the  system  of  classification  which  was 
finally  adopted,  it  was  seen  that  the  collection  arranged  in  accordance  with  this 
would  not  only  be  its  best  exponent,  but  would  be  an  indispensable  foundation  for 
purposes  of  nomenclature,  the  consideration  of  which  was  taken  up  only  after  the 
main  features  of  the  classification  had  been  disposed  of. 

The  collection  was  therefore  finally  arranged  as  far  as  possible  in  accordance 
with  the  new  system,  and,  with  the  approval  of  my  colleagues,  it  was  decided  to 
publish  it  in  that  form. 

Most  of  those  who  use  these  tables  will  have  had  some  acquaintance  with  the 
system  spoken  of,  for  a  full  description  of  which  the  reader  must  be  referred  to  the 
original  paper, 0  where  both  the  classification  and  the  nomenclature  are  described  at 
length.  But  for  the  benefit  of  those  to  whom  the  original  paper  is  unknown  or 
inaccessible,  a  brief  summary  of  its  main  features  may  be  given  here. 

QUANTITATIVE  CLASSIFICATION  OF  IGNEOUS  ROCKS. 

CONSTRUCTION  OF  THE  SYSTEM. 

The  system  is  a  quantitative  chemico-mineralogical  one.  All  igneous  rocks  are 
classified  on  the  basis  of  their  chemical  composition,  and  all  rocks  of  like  chemical 
composition  are  grouped  together.  The  definition  of  the  chemical  composition  of  a 
rock  is  expressed  in  terms  of  certain  minerals  capable  of  crystallizing  from  a  magma 
of  the  given  chemical  composition,  and  the  expression  is  quantitative.  For  this  pur¬ 
pose  the  rock-making  minerals  are  divided  into  two  groups,  consisting  on  the  one 
hand  mainly  of  the  alkali  and  lime  alumino-silicates,  and  on  the  other  of  the  nonalum- 
inous  ferromagnesian  ones.  The  first  is  called  mnemonically  the  salic  group,  the 
latter  the  femic  group.  From  these  categories  the  aluminous  pyroxenes  and  amphi- 
boles  and  the  micas  are  excluded  for  reasons  given  in  full  in  the  paper  cited. 

To  completely  classify  a  rock  by  this  system  its  chemical  composition  must  be 
known  by  chemical  analysis  or  by  physical  or  optical  means.  Here  we  have  only  to 
deal  with  the  first  of  these.  Since  a  given  magma  may  crystallize  into  different 

across,  Iddings,  Pirsson,  Washington,  Jour.  Geol.,  Vol.  X,  1902,  pp.  655  et  seq.  Also  Quantitative  Classification  of 
Igneous  Rocks,  Chicago,  1903,  pp.  95  et  seq. 


48 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


mineralogical  combinations,  according-  to  the  circumstances  attending  its  solidifica¬ 
tion,  it  is  necessary  to  select  a  certain  set  of  salic.  and  femic  minerals  as  uniform 
standards  of  comparison.  In  practice  the  molecular  composition  of  a  rock,  obtained 
from  its  chemical  analysis,  is  computed  by  a  regular  method  into  amounts  of  these 
standard  minerals,  and  the  place  of  the  rock  in  the  system  is  then  easily  determined. 

The  standard  mineral  composition  so  obtained  is  called  its  norm ,  and  will  be 
found  in  these  tables  in  the  column  under  this  heading,  for  every  rock  classified  by 
this  system.  The  norm  may  or  may  not  agree  with  the  actual  composition  or  mode. 

On  the  relative  proportions  of  the  two  groups  of  standard  minerals,  salic  and 
femic,  present  in  the  norm,  the  rocks  are  first  divided  into  five  classes,  according  as 
one  or  the  other  of  these  two  groups  alone  constitutes  the  norm,  or  is  extremely 
abundant;  whether  one  or  the  other  is  dominant,  or  whether  the  two  are  present  in 
about  equal  proportions. 

The  classes  thus  formed  are  divided  into  orders  on  the  relative  proportions  of 
the  minerals  forming  the  predominant  group  in  each  case,  and  in  the  middle  class  on 
the  relative  proportions  of  the  minerals  of  the  salic  group.  Thus  in  the  preponder¬ 
antly  salic  classes  the  orders  are  based  on  the  relative  amounts  of  quartz,  feldspars, 
and  feldspathoids  (lenads). 

The  orders  are  divided  into  rangs  on  the  basis  of  the  chemical  character  of  the 
basic  oxides  in  the  minerals  of  the  preponderant  group  in  each  case;  thus  if  these 
were  feldspathic,  as  to  whether  they  were  alkalic,  alkalicalcic  or  calcic;  if  the}7  were 
ferromagnesian,  as  to  the  relations  of  femic  alkalies,  femic  CaO,  and  (Fe,  Mg)0. 

Rangs  are  further  divided  into  suibrangs  according  to  the  proportions  of  the 
variable  basic  oxides  present  in  each  case.  Thus,  if  these  are  alkalies,  on  the  rela¬ 
tions  of  soda  to  potash;  if  ferromagnesian,  according  to  the  ratio  of  magnesia  to 
ferrous  oxide.  A  lower  division,  the  grad,  obtains  only  in  the  three  intermediate 
classes,  and  results  from  a  consideration  of  the  relative  amounts  of  the  minerals  com¬ 
posing  the  subordinate  femic  or  salic  group.  In  the  present  collection,  however, 
this  division  will  not  be  used,  the  subrang  being  the  lowest  division  to  which  the 
classification  is  here  carried,  for  reasons  to  be  explained  presently.  In  addition  to 
the  above  divisions,  further  ones  are  provided  for  where  necessary  by  subclasses, 
suborders,  subgrads,  and  sections  of  all  of  the  divisions. 

The  actual  mineralogical  composition,  or  mode,  and  the  texture  are  considered 
of  minor  importance  in  classification,  and  are  only  taken  into  account  after  the  chem¬ 
ical  or  magmatic  characters  have  been  disposed  of.  They  are  not  considered  in  the 
collection. 

NOMENCLATURE  OF  THE  SYSTEM. 

* 

As  the  system  demands  an  entirely  new  nomenclature,  it  has  been  sought  to 
introduce  this  according  to  a  definite  method,  the  lack  of  which  is  so  painfully  evi¬ 
dent  in  that  at  present  in  use.  The  nomenclature  proposed  consists  of  three 


OLD  AND  NEW  NOMENCLATURES. 


49 


parts:  Primarily,  of  substantive  names  for  the  magmatic  units,  implying  the  chemi¬ 
cal  composition  and  the  norm;  secondarily,  of  two  sets  of  adjective  terms  qualifying 
the  magmatic  names,  one  set  referring  to  the  actual  mineral  composition  or  mode, 
the  other  to  the  texture.  Of  these,  only  the  tirst  concerns  us  here. 

The  magmatic  name  consists  of  a  root,  derived  from  a  geographical  name  in  all 
cases,  except  for  the  names  of  classes  and  subclasses,  and  of  a  suffix.  The  suffixes  are 
so  chosen  as  to  vary  in  a  definite  way  with  the  division  of  the  system  to  which  the 
magmatic  name  belongs.  Thus,  for  class,  order,  rang,  and  grad  the  letters  n,  r,  s,  and 
t,  in  alphabetical  order,  are  used  respectively,  with  the  vowel  a,  giving  in  English 
ane,  are ,  ase,  and  ate.  ,  For  subclass,  suborder,  etc.,  the  vowel  is  changed  to  o,  giving 
one ,  ore,  ose ,  ote.  For  sections  i  is  inserted  before  the  ending. 

The  roots  of  the  names  for  classes  are  sal  and  fern,  mnemonic  of  the  salic  and 
femic  groups  constituting  their  norms,  and  are  combined  with  prefixes  yielding  the 
following  terms:  Persalane,  dosalane,  salfemane,  dofemane,  perfemane. 

The  roots  for  the  names  of  the  divisions  smaller  than  subclass  are  derived  from 
the  names  of  geographical  localities,  and  as  far  as  possible  from  those  at  present  in 
use  for  rock  names,  advantage  being  taken  of  their  connotations  as  to  magmatic 
character.  The  roots  for  the  names  of  the  orders,  however,  are  derived  from  the 
names  of  countries,  as  the  concepts  implied  by  them  are  broader  than,  and  are  not 
covered  by,  any  of  the  names  in  present  use. 


COMPARISON  OF  OLD  AND  NEW  NOMENCLATURES. 

The  rocks  being  classified  according  to  the  new  system,  it  follows,  as  a  matter  of 
course,  that  the  nomenclature  constructed  by  us  for  that  system  is  used  here.  This 
has  the  further  advantage  of  illustrating  by  concrete  examples  the  various  divisions, 
as  well  as  that  of  indicating  the  source  of  the  roots  of  the  magmatic  names. 

As,  however,  it  may  seem  to  many,  on  looking  over  the  tabulated  names,  that 
we  have  added  much  to  the  difficulties  of  the  petrographer  by  a  flood  of  new  names, 
we  may  briefly  examine  this  question  and  see  whether  objections  based  on  this  are 
really  justified,  granted  the  logical  necessity  for  a  new  nomenclature  to  express  the 
ideas  of  the  new  classification. 

It  will  be  found  on  examination  of  the  tables  that  there  are  257  magmatic  names 
.  proposed  by  us,  from  class  to  subrang.  A  large  proportion  of  these,  however,  differ 
from  one  another  only  in  the  terminations  which  successively  narrow  the  connota¬ 
tion  of  the  root.  This,  of  course,  greatly  facilitates  their  comprehension,  since, 
given  the  knowledge  of  the  meaning  of  the  name  of  a  rang,  as  that  liparase  is  per- 
alkalic,  it  is  a  very  easy  matter  to  remember  that  a  given  subrang  with  the  same  root 
has  a  certain  narrower  character,  as  that  liparose  is  sodipotassic. 

14128— No.  14—03 - 4 


50 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


Furthermore,  a  certain  proportion  have  roots  derived  from  the  names  of  the  old 
systems,  which,  by  constant  usage  in  the  past,  will  carry  connotations  as  to  their  mag¬ 
matic  character.  Thus  the  root  lipar  conveys  the  two  ideas  that  the  silica  is  high 
(modal  or  normative  quartz  being  consequently  present),  and  that  only  alkali  feld¬ 
spars  are  found  (i.  e.,  alkalies  greatly  in  excess  of  lime),  the  rock  being  peralkalic. 

The  names  and  roots  may  be  tabulated  as  follows,  sections  of  orders  and  sections 
of  rangs  being  placed  under  these  respective  divisions: 


Number  of 
names. 

Old. 

Roots. 

New. 

Total. 

Class  . 

5 

5 

5 

Subclass . 

5 

Order . 

40 

40 

40 

Suborder  . 

2 

1 

1 

Rang . 

86 

35 

31 

66 

Subrang . 

119 

18 

39 

57 

257 

53 

116 

169 

Let  us  see  how  these  compare  as  to  number  with  the  old  names,  taking  into 
account  only  the  roots  of  these,  unqualified  by  mineralogical  or  textural  additions. 
Thus  andes  will  be  counted  only  once,  and  such  names  as  biotite-andesite,  andesito- 
phyre,  trachyandesite,  andesite-porphyry,  etc.,  will  be  neglected. 

Undoubtedly  the  most  comprehensive  list  of  rock  names  now  in  print  is  that 
found  in  Loewinson-Lessing’s  Lexicon,  published  in  1901. a  In  this  there  are  207 
locality  and  other  roots  used  in  forming  names  of  rocks.  The  index  to  the  last 
edition  (1896)  of  Rosenbusch’s  Massige  Gesteine  shows  182  name  roots.  Both  of 
these  are  undoubtedly  somewhat  too  1owt,  as  some  new  names  have  appeared  since 
their  publication,  and  a  few  older  ones  have  been  omitted. 

Taking  them  as  they  stand,  it  will  be  seen  that  the  total  number  of  newT  names 
proposed  by  us  thus  far  is  not  greatly  in  excess  of  those  in  the  old  systems.  The 
difference  is  still  more  marked  when  the  roots  of  the  new  system  are  considered. 
These  only  amount  to  169,  against  the  207  of  the  old,  of  which,  furthermore,  53,  or 
nearly  one-third,  are  borrowed  from  the  old  names,  and  hence  carry  some  connota¬ 
tion  as  to  their  significance. 

Inspection  of  the  small  table  above  will  also  show  that  about  30  per  cent  of  the 
new  roots  are  allotted  to  the  classes  and  orders.  Here  they  are  absolutely  necessary 
because  these  divisions  imply  concepts  much  broader  than,  and  quite  distinct  from, 
any  to,  be  found  in  the  old  systems.  Of  these,  the  class  and  subclass  names  are  self- 


aComptes  Rendus  VIII®  Cong.  Geol.  Int.,  Paris,  1901,  pp.  1009-1302. 


OLD  AND  NEW  NOMENCLATURES. 


51 


explanatory.  Of  the  ordinal  names,  many,  such  as  canadare,  russare,  norgare.  lap- 
pare,  and  finnare,  while  not  derived  from  present  rock  names,  3Tet  carry  in  them¬ 
selves  quite  evident  petrographical  implications. 

In  view  of  the  facts  thus  briefly  presented  the  nomenclature  of  the  new  system 
can  scarcely  be  considered  overpowering  as  to  the  number  of  new  names,  compared 
with  the  old. 

It  is  true  that  two  objections  may  be  raised  against  this  conclusion.  One  would 
be  that,  even  only  carrying  the.  classification  as  far  as  subrangs,  there  are  numerous 
vacant  spaces,  indicated  in  our  tables  by  x,  as  well  as  many  others  which  are  so  far 
unrepresented  by  known  rocks.  To  this  the  answer  may  be  made  that  the  new  names 
for  these  spaces  will  come  more  or  less  gradually,  and  will  hence  be  easily  assimi¬ 
lated.  A  great  many  of  them,  also,  will  be  applied  to  rocks  which  occur  in  divisions 
representing  magmas  of  unusual  chemical  character,  and  which  would,  therefore, 
even  under  the  existing  systems,  be  deserving  of,  or  at  any  rate  would  receive,  new 
names.  We  shall  in  any  case  be  spared,  to  a  great  extent,  the  flood  of  new  names 
given  to  rocks  having  chemical  and  often  mineralogical  characters  identical  with  those 
of  well  known  ones,  the  only  excuse  for  which  seems  to  be  some  slight  difference  in 
texture,  mode  of  occurrence,  or  accessory  minerals. 

New  names,  under  the  system  proposed,  could  or  should  be  bestowed  only  after 
careful  chemical  analysis  or  an  equivalent  microscopical  estimate  of  the  mode  on 
which  to  base  the  norm.  A  clear  understanding  of  and  adherence  to  this  funda¬ 
mental  principle  of  the  new  nomenclature  will  do  much  to  check  any  rash  attempts 
at  the  bestowal  of  new  names,  and  will  render  those  proposed  in  the  future,  under 
the  new  system,  worthy  of  consideration,  and  make  them  precise  as  to  their  meaning, 
which  certainly  can  not  be  said  in  all  cases  of  those  proposed  during  recent  years. 

The  other  objection  that  might  be  raised  is,  that  no  account  has  been  taken  in 
the  preceding  remarks  of  the  names  which  will  be  needed  for  grad  and  subgrad 
names.  It  must  be  remembered  in  this  connection  that  no  such  names  will  be  needed 
for  the  persalanes  and  the  perfemanes,  which,  as  will  be  seen  later,  constitute  nearly 
40  per  cent  of  known  rocKs.  They  will  also  be  of  comparatively  limited  use  for  the 
dosalanes  and  the  dofemanes,  to  which  belong  about  another  40  per  cent  of  known 
rocks.  In  the  salfemane  class,  however,  to  which  belong  the  remaining  20  per  cent 
of  rocks,  they  will  be  probably  much  needed  and  used. 

Even  thus,  however,  and  even  assuming  the  pressing  need  for  such  distinctions 
in  Glasses  II  and  IV,  this  can  not  be  considered  a  very  serious  objection.  In  the 
first  place,  these  names,  like  those  for  the  other  divisions  of  higher  taxonomic  value, 
will  come  more  or  less  gradually  and  will  therefore  be  learned  with  comparative 
ease.  In  the  second  place,  as  we  have  already  indicated,  these  gradal  and  subgradal 


52 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


distinctions  may,  and  will,  often  be  exactly  expressed  conveniently  by  adjectives 
indicating  the  type  or  habit,  so  that  the  nomenclature  will  probably  tend  to  become 
binomial. 

As  regards  the  number  of  possible  grads  also,  a  little  consideration  will  show 
that  thev  can  not  be  as  numerous  as  might  appear  at  first  sight.  For,  from  the 
principles  regarding  the  distribution  of  silica  which  control  the  method  of  calcu¬ 
lating  the  norm,  a  very  considerable  proportion  of  the  grads  which  at  first  sight 
seem  possible  can  not  actually  exist.  Thus,  in  the  first  three  classes,  if  quartz  is 
present  among  the  salic  minerals  there  can  be  no  olivine  or  akermanite  among  the 
subordinate  femic  minerals,  so  that  the  grads  characterized  by  the  presence  of  these 
will  not  be  possible.  Similarly,  if  leucite  or  nephelite  be  present  among  the  prepon¬ 
derant  salic  minerals  there  can  be  no  grads  based  on  hypersthene.  Again,  with 
anorthite  present,  grads  characterized  by  acmite  can  not  exist.  Akermanite  also 
can  not  be  present  if  there  is  any  feldspar  in  the  norm. 

It  must  also  be  borne  in  mind,  in  considering  these  matters,  that  the  new  names 
indicate  the  chemical  character  of  the  rock  with  a  degree  of  precision  and  clearness 
quite  impossible  with  those  of  the  older  systems.  Thus  the  old  name  “diorite” 
implies  nothing  more  than  a  holocrystalline,  granular,  igneous  rock,  composed 
essentially  of  a  plagioclase  (of  almost  any  kind)  and  dark  minerals,  chiefl}r  horn¬ 
blende  or  biotite,  these  and  the  feldspar  being  present  in  almost  any  proportions. 
The  variety  of  dark  mineral  may  be  indicated,  when  such  precision  is  desired,  by 
the  prefixing  of  the  appropriate  mineral  name.  The  new  nomenclature,  on  the  other 
hand,  will  indicate  the  texture  and  mode  by  the  use  of  the  prefixes  grano  and  either 
hornblende  or  biotite,  and  will  also  indicate  exactly  the  chemical  character  of  the 
rock  by  the  use  of  one  of  half  a  dozen  magmatic  names,  leaving  the  reader  in  no 
doubt  as  to  the  complete  character  of  the  rock,  magmatic,  modal,  and  textural,  as 
well  as  the  relative  proportions  of  the  minerals. 

It  might  also  be  added  that  even  if  the  number  of  new  names  necessary  were  ten 
or  a  hundred  fold  those  suggested  in  our  tables,  petrographers  would  be  still  in  a  far 
happier  condition  than  their  colleagues  in  paleontology,  zoology,  or  botany,  with  the 
thousands  and  tens  of  thousands  of  names  and  their  connotations  with  which  it  is 
absolutely  essential  that  they  should  be  acquainted. 

It  must  be  remembered  that  petrography  is  really  young  as  compared  with  these 
sciences,  so  that,  being  near  the  beginning,  we  enjoy  a  great  advantage  over  workers 
in  them  in  respect  to  the  ready  acquisition  of  any  nomenclature;  and  that,  further¬ 
more,  it  scarcely  seems  probable  that,  even  granting  the  need  for  the  recognition  of 
very  minute  differences  in  rock  characters,  the  number  of  names  ever  called  for  in 
petrography  will  approach  those  needed  in  the  organic  sciences,  or  even  in  chemistry. 


TABULAR  CLASSIFICATION. 


53 


TABULAR  EXHIBIT  OF  DIVISIONS  ANI)  NAMES  OF  QUANTITATIVE  SYSTEM. 

There  is  appended  a  tabular  list  of  the  divisions  and  the  names  proposed  for  the 
new  system,  which  is  similar  to  that  published  in  the  original  paper  and  book,  except 
that  a  few  additional  names  proposed  by  us  have  been  inserted.  To  each  name  is 
also  added,  in  brackets,  the  number  of  superior  analyses,  of  the  first  three  rating s 
(excellent,  good,  and  fair),  which  are  to  be  found  in  Part  I  of  the  collection  in  the 
case  of  every  division.  These  will  be  referred  to  and  used  in  certain  calculations 
subsequently. 


Table  I.— CLASS  I,  PERSALANE  (652). 


54 


CHEMICAL  ANALYSES  OF 


IGNEOUS 


ROCKS. 


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co  c n  w  m 


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t/2  03  C/2 


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05 


Table  II.— CLASS  II,  DOSALANE  (676). 


TABULAR  STATEMENT  OF  CLASSIFICATION. 


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55 


Table  III.— CLASS  III,  SALFEMANE  (304). 


56 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


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TABULAR  STATEMENT  OF  CLASSIFICATION 


57 


Table  IV.— CLASS  IV,  DOFEMANE  (63). 


Order . 

1.  Hungarare  (24) 

Section . 

1.  Minnesotiare  (4) 

2.  x  (6) 

3.  Hungariare  (9) 

4.  x  (3) 

6.  Pyreniare  (3) 

Rangl . 

1.  Minnesotase  (4) 

1.  x  (5) 

1.  Wehrlase  (9) 

1.  Cortlandtase  (3) 

1.  Lherzase  (3) 

Section  1 . 

1.  Minnesotiase  (4i 

1 . 

Subrang  1  . . . 

1 . 

1. 

1.  x  (0) 

1.  Cortlandtose  (1) 

1.  Lherzose  (1) 

Subrang  2  ... 

2.  Cookose  (4) 

2. 

2.  Wehrlose  (4) 

2.  Custerose  (1) 

2.  Argeinose  (1) 

Subrang  3 _ 

3 . 

3. 

3... 

Subrang  4  ... 

4 . 

4. 

4 . 

4 . 

4 . 

Subrang  5  . . . 

5 . 

5. 

5 . 

5 . 

5 . 

Section  2 . 

2 . 

2  x  (5) 

2.  x  (5) 

2.  x  (1) 

2 . 

Subrang  1  . . . 

1. 

1.  Belcherose  (1) 

1 . 

1 . 

1. 

Subrang  2  ... 

2. 

2.  x  (4) 

2.  Rossweinose  (5) 

2 . 

2. 

Subrang  3  . . . 

3. 

3 . 

3 . 

3.  x  (1) 

3. 

Subrang  4  . . . 

4. 

4 . 

4 . 

4 . 

•4. 

Subrang  b  ... 

5. 

5 . 

5 . 

5 . 

5. 

Section  3 . 

3 . 

3 . 

3 . 

3 . 

Subrang  1  . . . 

1. 

1. 

1. 

1. 

i . 

Subrang  2  ... 

2. 

2. 

2. 

2. 

2.  Venanzose  (1) 

Subrang  3  . . . 

3. 

3. 

3. 

3. 

3 . 

Subrang  4  . . . 

4. 

4. 

4. 

4. 

4 . 

Subrang  5  . . . 

5. 

5. 

5. 

5. 

5 . 

Order . j  2.  Seotare  (31) 


Section . 

1.  x  (4) 

2.  Paoliare  (11) 

3.  Texiare  (9) 

4.  x  (6) 

5.  x  (1) 

Rang  1 . 

1 . 

1.  Paolase  (11)!  1.  Texase  (9) 

1.  Casselase  (6) 

f 

1.  x  (1) 

Section  1 . 

1. 

1.  Valbonnia.se  (1) 

1.  Marquettiase  (1) 

1.  x  (3) 

1.  Kalteniase  (1) 

Sub  rang  1 ... 

1. 

1.  Valbonnose  (1) 

1 . 

1.  x  (2) 

1 . 

Subrang  2  ... 

2. 

2 . 

2.  Marquettose  (1) 

2.  x  (1) 

2 

Subrang  3  ... 

3. 

3 . 

3 . 

3 . 

3.  Kaltenose  (1) 

Subrang  4  . . . 

4. 

4 . 

4 . 

4 . 

4 . 

Subrang  b  ... 

5. 

5 . 

5 . 

5 . 

5 . 

Section  2 . 

2.  x  (1) 

2.  x  (6) 

2.  Uvaldiase  (8) 

2.  Casseliase  (3) 

2 . 

Sub  rang  1 ... 

1 . 

1 . 

1.  x  (1) 

1.  x  (1) 

1. 

Subrang  2  ... 

2 . 

2  x  (6) 

2.  Uvaldose  (7) 

2.  Casselose  (2) 

2. 

Subrang  3  . . . 

3.  x  (1) 

3 . 

3 . 

3 . 

3. 

Subrang  4 _ 

4  . 

4 . 

4 . 

4 . 

4. 

Subrang  b  ... 

5 . 

5 . 

5 . 

5 . 

5. 

3.  Brandbergiase  (3) 

3.  Paoliase  (4) 

3 . 

3 . 

3 . .  ... 

Subrang  1  ... 

i . 

1 . 

1. 

1. 

1. 

Subrang  2  ... 

2.  Brandbergose  (3) 

2.  Paolose  (4) 

2. 

2. 

2. 

Subrang  3  . . . 

3 . 

3 . 

3. 

3. 

3. 

Subrang  4 _ 

4 . 

4 . 

4. 

4. 

4. 

Subrang  5  ... 

5 . 

5. 

5. 

58 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


Table  IV.— CLASS  IV,  DOFEMANE  (63)— Continued. 


Order . 

3.  Sverigare  (4) 

Section . 

1.  Bergeniare  (1) 

2.  x  (2) 

3 . 

4.  x  (1) 

5.  Sverigiare  (0) 

Rang  1 . 

1.  Bergenase  (1) 

1.  x  (2) 

1. 

1.  x  (1) 

1.  Tabergase  (0) 

Section  1 . 

1.  Bergeniase  (1) 

1 . 

,1 . 

1 . 

1.  Tabergiase  (0) 

Subrang  1  . . . 

1 . 

1 

1. 

1. 

1 . 

Subrang  2 _ 

2 . 

2. 

2. 

2. 

2 . 

Subrang  3  . . . 

3.  Bergenose  (1) 

3. 

3. 

3. 

3 . 

Subrang  4  . . . 

4 . 

4. 

4. 

4. 

4 . 

Subrang  5  . . . 

5 . 

5. 

5. 

5. 

5 . 

Section  2 . 

2 . 

2  x  (1) 

2 . 

2  x  (1) 

2 . 

Subrang  1 _ 

1. 

1 . 

1. 

1 . 

1. 

Subrang 2  ... 

2. 

2.  x  (1) 

2. 

2.  x  (1) 

2. 

Subrang  3 _ 

3. 

3 . 

3. 

3 . 

3. 

Subrang  4 _ 

4. 

4 . 

4. 

4 . 

4. 

Subrang  5  ... 

5. 

5 . 

5. 

5 . 

5. 

Section  3 . 

3 . 

3.  Avezaciase  (1) 

3 . 

3 . 

3  .. 

Subrang  1 . . . 

1. 

1 . 

1. 

1. 

1. 

Subrang  2  ... 

2. 

2 . 

2. 

2. 

2. 

Subrang  3  . . . 

3. 

3.  Avezacose  (1) 

3. 

3. 

3. 

Subrang  4  . . . 

4. 

4 . 

4. 

4. 

4. 

Subrang  5  ... 

5. 

5 . 

5. 

5. 

5. 

Order . 

4.  Adirondackare  (4) 

Suborder . 

1 . 

2.  Adirondackore  (2) 

3.  Champlainore  (2) 

1 . 

1.  Adirondackase  (2) 

1.  Champlainase  (2) 

Section  1 . 

1 . 

1.  Adirondackiase  (2) 

1 . 

1.  Champlainiase  (2) 

1 . 

Subrang  1 . 

1. 

2. 

3. 

4. 

5. 

Subrang  2 . 

2 . 

2 

Sub rang  3 . 

3 . 

3 . 

Subrang  4 . 

4.  x  (2) 

5 . 

4.  x  (2) 

5 . 

Subrang  5 . 

Section  2 . 

2 

9 

2 

Subrang  1 . 

Subrang  2 . 

Subrang  3 . 

Subrang  4 . 

Subrang  5 . 

Section  3 . 

' 

Subrang  1 . 

Subrang  2 . 

Subrang  3 . 

Subrang  4 . 

Subrang  5 . 

REASONS  FOR  NEW  ARRANGEMENT. 


59 


ORDER  . 

Section . 

Rang  1 . . 

Section  1 . 

Subrang  1 
Subrang  2 
Subrang  3 
Subrang  4 
Subrang  5 


Section  2 . 

Subrang  1 
Subrang  2 
Subrang  3 
Subrang  4 
Subrang  5 


Section  3 


Table  V.— CLASS  V,  PERFEMANE  (16). 


1.  Maorare  (16) 


1.  Caroliniare  (9) 

1.  Websterase  (9) 

1.  Mariciase  (3) 

1.  Maricose . 3 

2 

2.  Marylandiare  (3) 
1.  Baltimoras4  (3) 

1.  x  (1) 

1.  x  (1) 

2 

3 . (0) 

1 . 

1. 

1. 

2. 

3 . 

3 . 

4 . 

4 . 

4 

5 . 

5 

2.  Websteriase  (6) 

1.  Websterose  (3) 

2.  Cecilose  (3) 

3 . 

2.  Baltimoriase  (2) 

1.  x  (1) 

2.  Baltimorose  (2) 

3 . 

2 . 

1. 

2. 

3. 

4. 

5. 

4 . 

4 . 

5 . 

3 . 

3 . 

3... 

(2) 

5.  Maoriare 

(2) 

(2) 

5.  Dunase 

(2) 

(2) 

1.  Duniase 

(2) 

(1) 

1.  Dunose 

(2) 

(1) 

2 

4 

5 


9 


1. 

2. 


REASONS  FOR  ARRANGEMENT  ACCORDING  TO  THE  QUANTITATIVE  CLASSIFICATION. 

The  objection  may  be,  and  indeed  has  been,  raised  that  the  usefulness  of  the 
collection  will  be  seriously  impaired  by  its  arrangement  in  accordance  with  a  new 
system  of  classification,  which,  whatever  be  its  merits  or  demerits,  is  not  }ret  in 
general  use.  That  this  is  true  to  a  certain  extent  is  undeniable,  and  the  whole  ques¬ 
tion  was  the  subject  of  much  thought  and  discussion  on  the  part  of  my  colleagues 
and  myself.  The  decision  finally  arrived  at  was  based  on  the  following  considerations: 

Thoroughly  believing  in  the  general  merits  of  the  system  which  we  proposed,  we 
desired  to  have  it  placed  before  the  petrographical  world  in  the  fullest  manner 
possible.  We  wished  to  show  that  it  is  not  merely  an  academic  classification,  good  in 
its  principles  but  not  adapted  to  the  wear  and  tear  of  everyda}^  use,  but  that  it  is  as 
well  of  real  practical  utility  and  benefit  to  the  science.  To  this  end  we  could  think 
of  no  more  striking  means  than  the  arrangement  along  its  lines  of  the  greatest 
possible  number  of  the  analyses  represented  in  the  collection. 

Part  I  of  the  collection  forms  a  concrete  illustration  of  our  system.  In  the 
original  paper,  for  evident  reasons,  the  various  divisions  had  to  be  concisely  defined, 
with  few,  if  any,  illustrations,  and  the  magmatic  names  had  to  be  given  in  tabular 
form.  But  here  are  to  be  found  the  known  calculated  examples  of  the  various 
divisions,  from  a  study  of  which  the  petrographer  can  gather  their  characters,  chem¬ 
ical,  normative,  and  modal.  The  new  terms  and  the  names  are  no  longer  empty 
syllables,  suggestive  of  only  the  vaguest  ideas  to  one  who  studies  the  system  for  the 
first  time,  but,  illustrated  as  they  are  by  the  actual  rocks  whose  characters  are 
known,  or  whose  descriptions  can  be  easily  referred  to,  become  full  of  meaning  and 
assume  a  definiteness  which  they  would  not  otherwise  possess. 


60 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


In  this  collection  petrographers  have  before  them  the  actual  mass  of  data  by 
which  the  authors  of  the  proposed  system  tested  their  views  practically,  and  which 
was  very  largely  used  as  the  basis  for  the  selection  of  the  magmatic  name  roots. 
They  are  thus  able  to  test  the  system  at  every  point,  see  what  are  the  practical  con¬ 
sequences  of  the  application  of  its  principles,  and  how  far  the  claims  which  have  been 
made  for  it  hold  good. 

But  there  was  another  and  very  weighty  consideration  which  led  to  the  arrange¬ 
ment  according  to  the  new  system,  and  which,  whether  this  be  generally  adopted  or 
not,  will  render  the  collection  much  more  useful  than  if  it  had  been  arranged  along  the 
lines  of  the  qualitative  systems. 

It  may  be  assumed  that  the  purpose  for  which  such  a  collection  as  this  or  those  of 
Both  will  be  most  used,  will  be  the  finding  of  analyses  of  rocks  for  comparison  with 
those  under  investigation;  and  that,  furthermore,  as  chemical  analyses  are  to  be  com¬ 
pared,  the  chemical  features  of  rocks  will  be  the  main  object  of  search,  their  mineral 
or  textural  character  being  in  such  a  case  of  subsidiary  importance. 

For  this  purpose  an  arrangement  according  to  the  older  systems  is  quite  inade¬ 
quate,  since  their  fundamental  primary  divisions  are  usually  based  on  textural  and 
qualitative  mineralogical  characters,  and  only  to  a  minor  extent  on  chemical  char¬ 
acters.  The  consequence  of  this  is  the  separation  of  similar  analyses  and  the  collo¬ 
cation  of  unlike  ones,  as  will  be  illustrated  at  some  length  later.  This  renders  the 
finding  of  analyses  similar  to  any  given  one  a  matter  involving  much  time  and  labor 
in  searching  through  a  great  part  of  a  collection  arranged  on  such  a  basis. 

Under  the  system  adopted,  on  the  contrary,  the  finding  of  analyses  analogous  to 
those  under  investigation  is  an  easy  matter.  The  norm  is  readily  calculated  by  the 
methods  given,  the  rock  is  thus  classified,  and  the  analyses  in  the  corresponding  division 
of  the  collection  may  be  referred  to.  If  the  analysis  figures  out  near  the  border  in 
any  direction,  or  at  any  point  in  the  scheme, .the  divisions  bej’ond  in  these  directions 
may  also  be  examined,  and  thus  a  good  assortment  of  data  is  made  available. 

In  the  great  majority  of  rocks  which  belong  to  the  first  two  classes  it  is  an  easy 
matter,  with  a  little  experience,  to  judge  from  the  analysis,  even  without  calculation 
of  the  norm,  as  to  the  class  and  order  to  which  the  rock  probably  belongs.  Then  the 
easily  ascertained  ratios  of  alkalies  to  salic  lime,®  and  of  soda  to  potash,  give  the  rang 
and  subrang.  If  doubt  exists  as  to  the  proper  class  or  order,  and  it  is  not  desired  to 
calculate  the  norm,  the  proper  rangs  and  subrangs  indicated  by  the  alkali-lime  and 

a  Attention  must  be  specially  called  to  the  fact  that  in  the  first  three  classes  the  rangs  are  based  on  the  ratio  between 
the  alkalies  present  in  the  normative  feldspars  and  lenads  and  the  lime  in  the  normative  anorthite  only — CaO'.  The  latter  is 
equal  to  the  difference  between  the  sum  of  the  (molecular)  amounts  of  alkalies  and  the  total  alumina  (molecular).  The 
rest  of  the  lime,  CaO",  will  be  femic  and  will  have  nothing  to  do  with  the  rangs  of  the  first  three  classes.  Stress  is  laid 
on  this  point  here,  as  some  instances  have  come  to  my  notice  of  persons  working  with  the  new  system  who  have  not 
clearly  understood  the  point,  and  who  have  determined  the  rang  in  rocks  of  the  first  three  classes  by  the  ratio  of  alkalies 
to  total  lime.  Analogous  remarks  will  apply  to  salic  and  femic  Na-_,0. 


HETEROGENEITY  OF  OLD  TYPE  NAMES. 


61 


soda-potash  ratios  may  be  examined.  This  only  to  tind  analyses  similar  to  the  one 
at  hand.  If  the  classification  of  the  rock  be  the  object  in  view,  the  calculation  of  the 
norm  should  never  be  omitted,  and  indeed  is  always  the  most  advisable  procedure. 


DISTRIBUTION  OF  ROCKS  BY  NEW  SYSTEM. 

Still  another  consideration  which  decided  the  present  form  of  arrangement  was 
that  it  permitted  the  correlation  of  the  new  with  the  older  systems.  A  rather  full 
discussion  of  this  subject  will  be  found  on  another  page,  but  a  few  instances  may  be 
given  here  which  serve  to  illustrate  the  very  diverse  chemical  features  which  are 
embraced  under  almost  any  one  of  the  old  rock  names,  and  conversely  the  number 
of  different  rock  names  which  have  been  applied  to  rocks  of  any  given  chemical 
composition. 

Thus,  “granites”  are  to  be  found  under  the  subrangs  magdeburgose,  alaskose, 
tehamose,  alsbachose,  riesenose,  omeose,  liparose,  dellenose,  toscanose,  lassenose, 
amiafc~.se,  yellowstonose,  pantellerose,  adamellose,  dacose,  harzose,  tonalose,  placerose, 
akerose,  and  hessose. 

“Syenites”  occur  in  liparose,  toscanose,  lassenose,  yellowstonose,  phlegrose, 
nordmarkose,  tuolumnose,  pulaskose,  laurvikose  adamellose,  dacose,  harzose,  tonalose, 
highwoodose,  monzonose,  akerose,  shoshonose,  laurdalose,  borolanose,  lujavrose, 
kentallenose,  camptonose. 

“Trachyte”  is  found  in  liparose,  kallerudose,  toscanose,  lassenose,  amiatose, 
yellowstonose,  phlegrose,  nordmarkose,  vulsinose,  pulaskose,  laurvikose,  miaskose, 
viezzenose,  adamellose,  harzose,  highwoodose,  umptekose,  ciminose,  monzonose, 
akerose,  shoshonose,  fergusose,  shonkinose. 

“Dio rite”  occurs  as  toscanose,  lassenose,  amiatose,  yellowstonose,  laurvikose, 
sitkose,  adamellose,  dacose,  harzose,  tonalose,  placerose,  bandose,  monzonose,  aker- 
ose>,  shoshonose,  andose,  hessose,  salemose,  camptonose,  auvergnose. 

“Andesite”  is  met  with  as  dellenose,  toscanose,  lassenose,  amiatose,  yellow¬ 
stonose,  pulaskose,  laurvikose,  adamellose,  dacose,  harzose,  tonalose,  placerose, 
bandose,  umptekose,  monzonose,  akerose,  shoshonose,  andose,  beerbachose,  hessose, 
laurdalose,  salemose,  lamarose,  kilauose,  kentallenose,  camptonose,  and  subrang  5  of 
albanase. 

Even  “  camptonites  ”  are  found  scattered  among  placerose,  hessose,  salemose, 
kentallenose,  camptonose,  auvergnose,  shonkinose,  and  limburgose. 

When  the  list  for  any  of  these  is  looked  up  in  the  tables  of  Part  I,  the  chemical 
characters  of  the  divisions  of  the  new  system  into  which  the}T  fall  being  borne  in 
mind,  the  great  chemical  variety  possibly  implied  by  any  one  of  the  old  names  is 
most  striking  and  indeed  significant.  Thus  the  “andesite”  of  different  authors, 
though  the  various  rocks  so  named  may  have  certain  textural  features  in  common, 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


62 

has  been  applied  to  rocks  varying  chemically  from  persalane  to  salfemane,  derived 
from  magmas  rich  in  silica  (i.  e.,  with  much  normative  quartz)  to  those  low  in  it 
(i.  e.,  with  much  normative  nephelite) — rocks  varying  from  peralkalic  to  docalcic, 
from  dopotagjsic  to  persodic.  In  other  words,  “  andesite  ”  may  mean  rocks  having 
chemical  compositions  ranging  from  those  of  granites  to  those  of  “  basic”  diorites, 
camptonites,  and  gabbros.  Similarly  the  composition  of  “syenites”  and  “tra¬ 
chytes  ”  may  be  that  of  granites,  syenites,  foyaites,  diorites,  or  gabbros. 

Conversely,  to  give  only  a  few  examples  out  of  the  many  possible,  the  subrang 
nordmarkose  is  represented  by  very  similar  analyses  of  rocks  described  as  quartz- 
porphyry.  quartz-syenite-porphyry,  syenite-porphjuy,  biotite-porphyrite,  lestiwarite, 
nordmarkite,  pulaskite,  trachyte,  bostonite,  andesite,  nephelite-syenite,  foyaite, 
phonolite,  tinguaite,  litchheldite,  and  solvsbergite.  Yellowstonose  includes  rocks 
called  granite,  granodiorite,  adamellite,  quartz-diorite,  diorite,  porphyry,  porphyrite, 
syenite,  dacite,  andesite,  trachyte;  and  camptonose  embraces  camptonite,  diabase, 
melaphyr,  basalt,  gabbro,  norite,  essexite,  andesite,  phonolite,  basanite,  and 
porphyrite. 

COMMENT  ON  FACTS  EXPRESSED  BY  TABLES. 

It  is  true  that  different  names  have  been  applied  to  the  same  or  similar  magmas 
on  the  basis  of  textural  differences,  but  even  the  few  instances  given  here,  which 
might  be  multiplied  indefinitely,  serve  to  show  conclusively  that  the  chemical  com¬ 
position  of  rocks  plays  but  an  infinitesimal  part  in  their  classification  according  to  the 
systems  at  present  in  use. 

Many  petrographers  avowedly  use  a  mineral  classification  as  representing  the 
chemical  composition.  But  this  is  done  in  almost  all  cases  in  a  purely  qualitative 
wa\T,  and  in  apparent  ignorance  or  neglect  of  the  obvious  fact  that  a  mineral  classifi¬ 
cation  will  express  the  chemical  characters  of  rocks  only  if  it  is  strictly  quantitative. 
Otherwise,  of  course,  the  chemical  character  will  be  almost  wholly  lost  sight  of  in  the 
majority  of  instances,  or  at  least  will  not  be  indicated  with  any  approach  to  certainty 
or  completeness. 

These  considerations,  and  the  correlation  given  elsewhere,  constitute,  in  reality, 
a  reductio  ad  absurdum  of  existing  classifications,  if  these  make  any  pretense  at  being- 
founded  on  the  chemical  or  the  quantitative  mineralogical  characters  of  igneous  rocks. 
When  two  rocks  of  the  same  chemical  composition  can  be  called,  the  one  a  granite, 
the  other  a  diorite,  or  when  one  name  is  applied  to  rocks  varying  chemically  to 

the  extent  implied  usually  by  these  names,  it  seems  time  that  something  be  done  to 

* 

define  our  terms  and  to  replace  the  vague  rock  names  and  definitions  at  present  in 
use  by  some  which  have  more  precise  and  clearly  defined  limits  and  meanings. 


APPARENT  EXCEPTIONS  TO  PRINCIPLES. 


63 


While,  in  general,  the  chemical  similarity  of  the  analyses  embraced  in  any  given 


subrang  is  very  evident,  yet  the  critical  student  will  find  instances  here  and  there  of 
analyses  in  the  same  subrang  which  vary  considerably  from  one  another  as  regards 
certain  constituents,  or  which  vary  more  from  others  in  tlnysame  subrang  than  they 
do  from  analyses  elsewhere.  This  is  especially  noticeable  in  regard  to  the  silica 
percentage,  which  may  vary  as  much  as  10  per  cent  of  the. whole  rock  in  a  given 
subrang.  Alumina  may  also  vary  considerably — to  the  extent  of  5  or  0  per  cent — 
and  the  other  constituents  also,  but  generally  to  a  less  extent. 

Some  of  these  cases  of  apparent  contradiction  to  one  of  our  fundamental  prin¬ 
ciples  are  due  to  the  fact  that  the  analyses  of  some  rocks  which  are  not  quite  fresh 
have  been  included  in  Part  I  for  various  reasons..  The  amount  of  water  and  carbonic- 
acid  present  will,  of  course,  diminish  the  amounts  of  the  other  constituents,  this 
diminution  affecting  most  the  silica  and  alumina,  which  are  present  in  greatest 
amount.  A  few  cases  are  also  due  to  the  nondetermination  of  Ti02,  the  non¬ 
separation  of  the  oxides  of  iron,  or  a  high  amount  of  ferric  oxide  owing  to  alteration 
of  the  rock.  These  will  affect  the  amount  of  available  silica  in  calculating  the  norm, 
yielding  results  which  vary  somewhat  widely  from  the  center  point. 

But  the  majority  of  the  apparent  exceptions  have  broader  explanations  than 
these,  and  will  be  seen  to  be  quite  conformable  with  our  premises.  It  must  be  remem¬ 
bered  that  this  classification  of  rocks,  like  any  other,  allows  for  some  variation  from 
the  center  point  of  each  division  in  different  directions.  This  may  affect  any  of  the 
constituents,  but  will  be  most  evident  in  those  which  are  present  in  greatest  amount, 
as  silica  and  alumina.  In  the  nature  of  the  case  such  variation  is  unavoidable,  and 
when  chemical  similarity  is  spoken  of  it  is  understood  that  the  similarity  lies  within 
the  limits  assigned,  conformable  to  the  center  point  and  to  the  boundaries  of  the 
division.  A  study  of  the  tables  of  calculated  center  points,  given  later,  will  be  of 
interest  in  this  connection. 

The  fact  that  an 'analysis  may  resemble  more  closely  one  in  another  division  than 
others  in  its  own  is,  of  course,  due  to  the  arbitraiy  character  of  the  classification. 
As  was  said  in  the  paper  describing  this  system,®  “Unless  the  future  should  reveal 
new  properties  of  rocks  .  .  .  every  method  so  far  devised,  or  which  can  be  devised, 
must  have  artificial  lines  of  division.”  And  again,  “The  difficulty  in  this  respect 
lies  not  in  the  method,  but  is  inherent  in  the  subject  itself.” 

It  must  also  be  borne  in  mind  that  in  the  proposed  system  of  classification  the 
position  of  any  given  rock  depends  on  the  mutual  relations  of  all  the  constituents, 
and  not  on  the  absolute  amount  of  only  one  or  two,  as  is  so  often  the  case  in  the 


<i  Loe.  cit.,  pp.  232,  087. 


64 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


qualitative  classifications.  It  will  thus  happen  often  that  while  one  of  the  constitu¬ 
ents  may  seem  to  vary  somewhat  widely  from  the  average  of  the  analyses  in  the  same 
division,  vet  if  the  analysis  is  considered  with  respect  to  all  the  constituents,  the 
similarity  will  be  manifest.  The  position  of  two  rocks,  for  instance,  will  not  depend 
(given  similar  mineral  composition)  on  the  fact  that  the  silica  in  one  is  5  or  10 
per  cent  higher  than  in  the  other,  but  in  each  case  on  the  relations  of  this  constitu¬ 
ent  to  all  the  others  and  the  mutual  relations  of  each  of  these  to  the  rest,  which  will 
determine  the  norms  in  the  two  cases,  and  hence  determine  whether  the  two  rocks 
are  chemically  alike  in  all  respects  or  not.  Here,  also,  the  tables  of  center  points  will 
repay  some  study. 

This  being  so,  the  apparent  instances  of  contradiction  to  our  principle  of  bring¬ 
ing  together  rocks  chemically  similar  are  seen  to  be  unavoidable,  and,  falling  as  they 
do  within  the  limits  prescribed,  they  are  not  exceptions  and  can  not  be  brought  up  as 
objections  against  this  particular  system  more  than  against  any  other. 

The  classification  has  not  been  carried  further  than  subrang  in  any  case.  This 
was  as  far  as  was  deemed  advisable,  since  for  Classes  I  and  V  the  division  into  grads 
and  subgrads  is  impracticable,  and  in  Classes  II  and  IV,  and  often  in  III,  the  sub¬ 
rang  is  the  lowest  division  needful  for  most  purposes  of  reference.  Further  subdi¬ 
vision  would  also  have  increased  considerably  the  complexity  of  the  tables,  and,  in 
view  of  the  novelty  of  the  classification,  it  was  thought  best  to  avoid  this. 


VARIOUS  FEATURES  OF  THE  TABLES. 

Geographical  arrangement. — In  each  of  the  subrangs  the  arrangement  is  geo¬ 
graphical.  The  primary  step  is  by  continents,  Forth  and  South  America  coming 
first,  then  Europe,  Africa,  Asia,  Oceania,  and  Australia.  Further  arrangement  in 
each  continent  is  possible  on  several  plans.  While  an  alphabetical  one,  by  States, 
has  certain  advantages,  it  was  finally  decided  that  it  should  be,  in  a  way,  zonal,  and 
thus  express  roughly  certain  broad  petro graphical  provinces,  these  zones  being  then 
further  subdivided  according  to  political  divisions  in  definite  directions.  Thus  North 
America  may  be  referred  to  four  zones,  running  north  and  south:  An  Atlantic  zone, 
embracing  the  territory  from  Greenland,  through  Quebec ’and  the  Eastern  Provinces 
of  Canada,  the  Eastern  and  Middle  States,  and  the  Southern  States  to  Alabama;  a 
Central  zone,  from  Ontario  southward,  through  Michigan,  Minnesota,  Missouri,  etc., 
to  Texas;  a  Rocky  Mountain  zone,  including  the  States  from  the  Dakotas  and  Montana 
south  to  New  Mexico;  and  a  Pacific  zone,  from  Alaska,  through  British  Columbia  and 
the  Pacific  coast  States,  to  Mexico  and  Central  America.  Similarly,  Europe  is 
divided  into  a  Western  zone,  including  Iceland,  Great  Britain,  Belgium,  France, 
Portugal,  and  Spain;  a  Central  zone,  including  Norway,  Sweden,  Finland,  Germany, 


STATEMENT  OF  EATING. 


65 

Austria,  Hungary,  Switzerland,  and  Italy;  and  an  Eastern  zone,  embracing  Russia 
(except  Finland),  the  Balkan  Peninsula,  Greece,  and  the  Archipelago,  with,  generally, 
the  Caucasus  and  Asia  Minor. 

That  this  arrangement  is  open  to  criticism  is  undeniable.  But  it  must  be  remem¬ 
bered  that  it  is  only  a  matter  of  convenience  for  use  here,  with  no  implications  as  to 
petrological  generalizations  concerning  the  distribution  of  petrographical  provinces. 
The  aim  has  been  merely  to  facilitate  reference,  and,  as  far  as  possible,  to  keep  rocks 
of  near-by  localities  together. 

The  arrangement  in  each  country  or  State  is  by  localities;  these,  like  the  States, 
being  arranged  in  a  general  order  from  north  to  south  (in  Germany  from  west  to 
east).  In  rocks  from  the  same  locality  the  final. arrangement  is  by  the  silica  content, 
those  highest  in  this  coming  first. 

Numbering  of  analyses. — For  purposes  of  reference  each  analysis  is  numbered,  the 
numbering  beginning  anew  with  each  subrang.  Thus  an  analysis  will  be  referred  to 
as  No.  26,  liparose,  or  No.  IT,  camptonose,  etc.  If  the  subrang  is  as  yet  unnamed  it 
may  be  referred  to,  e.  g.,  as  No.  3,  SR  5  of  monzonase,  etc. 

Rating  of  analyses. — With  the  number  is  also  given  the  rating  assigned  it  by 
me,  on  the  basis  already  described.  The  symbols  to  indicate  the  elements  of  accuracy 
and  completeness  are  given,  as  well  as  its  rating,  concisely  expressed  by  Roman 
numerals.  Thus,  Al,  I  means  that  the  analysis  in  question  is  excellent  or  first  rate, 
being  as  accurate  and  as.  complete  as  possible,  A3,  III  that  it  is  fair,  or  third  rate,  it 
being  excellent  as  to  accuracy  but  only  moderate  as  to  completeness. 

It  may  be  remarked  that  in  the  assignment  of  the  ratings  I  have  endeavored  to 
be  as  unprejudiced  as  possible.  When  there  seemed  to  be  any  doubt  it  has  always 
been  settled  in  favor  of  the  analyst,  and  there  are  many  analyses  which  are  here  rated 
as  superior  ones  which  I  look  on  with  suspicion,  though  without  positive  proof  of 
their  inferiority.  In  a  certain  way  this  may  not  be  exactly  just  to  the  science  as  a 
whole,  but,  in  view  of  the  fact  that  this  is  the  first  attempt  that  has  been  made  to 
deal  critically  with  such  a  large  mass  of  analytical  data,  it  was  thought  best  not  to  be 
hypercritical. 

It  has  been  impossible  in  most  cases  to  indicate  the  grounds  for  the  ratings 
assigned,  though  generally  they  are  sufficiently  obvious  to  one.  acquainted  with  the 
chemical  analysis  of  rocks  and  the  proper  correlation  of  the  mode  with  the  chemical 
composition.  In  regard  to  this  I  can  only  say  that  each  individual  analysis  has  been 
the  object  of  careful  consideration,  and  that  the  ratings  have  been  revised  several 
times,  till  I  am  now  quite  confident  of  their  correctness  in  nearly  all  cases. 

Results  of  rating  analyses. — In  connection  with  this  subject,  and  in  justification 
of  the  adverse  criticism  which  has  been  made  in  the  preceding  pages,  it  will  be  of 

14128— No.  14—03 - 5 


66 


CHEMICAL  ANALYSES  OF  IGNEOUS  EOCKS. 


interest  to  give  a  concise  statement  of  the  relative  numbers  of  analyses  of  the  various 
ratings  as  revealed  by  the  collection.  They  will  be  found  tabulated  according  to 
ratings  in  the  accompanying  table: 


Rating. 

Part  I. 

Part  II. 

Whole  collec¬ 
tion. 

Per  cent  of 
whole. 

I . 

492 

38 

530 

18.40 

II . 

530 

42 

572 

19.85  • 

Ill . 

694 

68 

762 

26.  45 

IV . 

168 

258 

426 

14.  79 

V . 

13 

578 

591 

20.51 

1,897 

984 

2,  881 

100.  00 

It  will  be  seen  that  while  there  is  no  very  great  difference  in  relative  numbers, 
yet  that  analyses  of  the  third  rate  are  somewhat  more  numerous  than  any  others— 
that  is,  in  general,  those  analyses  in  which  only  the  nine  main  constituents  have  been 
well  determined,  and  not  Ti02,  P205,  etc.  Next  to  these  come  the  positively  bad 
ones,  closely  followed  by  the  good  and  excellent  ones,  with  the  poor  analyses  in 
smallest  amount. 

The  superior  analyses,  those  of  the  first  three  ratings,  constitute  64.70  per  cent 
of  all,  and  the  inferior  35.30  per  cent.  In  other  words,  more  than  a  third  of  all  the 
analyses  which  have  been  made  in  the  seventeen  years  included  by  the  collection  are 
not  worthy  of  use  for  general  purposes,  and  a  very  large  part  of  them  are  useful  for 
no  purpose  at  all.  The  labor  expended  on  these  1,017  analyses  has  been  almost 
entirely  thrown  away,  if  nothing  more  severe  be  said. 

These  figures  are  sufficient  to  show  that  the  standard  of  criticism  with  regard  to 
the  making  and  use  of  rock  analyses  is,  or  has  been,  far  too  low,  and  the  showing 
can  scarcely  be  called  very  creditable  to  the  science.  They  at  least  justify  the  calling 
of  the  attention  of  petrographers  to  the  state  of  affairs  and  to  the  urgent  need  of 
reform. 

It  will  be  noted  that  the  excellent  and  good  analyses  together  amount  to  1.102, 
or  38.25  per  cent  of  the  whole.  Of  these,  the  chemists  of  the  United  States  Geo¬ 
logical  Survey  have  made  655,  or  nearly  60  per  cent,  while  of  the  492  excellent  ones 
alone  they  have  made  437,  or  88.82  per  cent,  figures  which  reveal  clearty  the  pre¬ 
eminent  position  they  hold  in  this  branch  of  the  science.® 

ft  Of  the  655  analyses  of  igneous  rocks  (including  tuffs)  given  in  Bulletin  168,  437  are  excellent,  218  good,  72  fair,  8 
poor,  and  1  bad.  Of  these  the  fair  ones  were  nearly  all  made  in  the  early  days  of  the  laboratory,  while  the  poor  and  bad 
ones  are  thus  rated  on  account  of  the  nonseparation  of  alumina  and  iron  oxides,  7  of  them  being  of  volcanic  dust  or  sand. 
As  to  accuracy  nearly  all  are  rated  A.  It  is  gratifying  to  note  that  the  analyses  that  are  now  being  made  by  the  New  South 
Wales  Geological  Survey  are  of  almost  equally  high  standard. 


STATEMENT  OF  CONSTITUENTS. 


67 


Constituents. — The  chief  constituents  are  given  in  horizontal  rows  on  the  left. 
This  is  the  method  employed  by  Roth,  and  it  was  adopted  here,  rather  than  an 
arrangement  in  vertical  columns,  because  it  facilitates  reference  and  for  typographical 
reasons.  With  these  chief  constituents  are  included  Ti02,  P205,  and  MnO,  since 
these  are  in  general  the  most  important  of  the  minor  constituents,  and  the  two  former 
are  present  in  all  excellent  and  good  analyses,  and  in  many  that  are  rated  fair.  BaO 
is  also  placed  here,  because  it  is  so  frequently  determined  in  the  analyses  of  the 
United  States  Geological  Survey,  and  to  save  space  elsewhere'. 

In  analyses  in  which  the  iron  oxides  are  not  separately  determined,  the  figures 
are  given  under  Fe203  or  FeO,  according  to  the  statement  of  the  original  analysis. 
When,  however,  there  is  no  indication  as  to  this  point  in  the  original,  the  two  oxides 
being  connected  by  a  bracket,  I  have  assumed  that  they  really  represent  Fe203,  as 
this  is  the  form  in  which  they  are  weighed,  and  have  so  placed  them.  This  may  not 
always  correspond  with  the  facts,  but  their  nonseparation  greatly  lessens  the  value 
of  the  analysis,  and  this  seemed  the  most  reasonable  assumption  to  make  in  order  to 
calculate  the  norm,  so  that  this  has  been  uniformly  followed  in  the  absence  of 
information  to  the  contrary. 

When  they  are  so  stated  in  the  anatysis,  combined  and  hygroscopic  water  are 
both  given,  but  no  attempt  has  been  made  to  discriminate  between  the  various  tem¬ 
peratures  at  which  the  hygroscopic  water  has  been  determined.  Usually  this  is  110°, 
but  often  100°  or  105°,  and  occasionally  120°  or  130°.  The  difference  in  the  result 
is  so  small  and  of  such  slight  importance  that  indication  of  the  exact  temperature 
seemed  to  be  not  worth  while. 

No  indication  is  given  also  as  to  whether  the  water  has  been  determined  directly 
or  as  loss  on  ignition.  This  is  a  defect  in  the  collection  which  is  greatly  regretted, 
and  which  would  have  been  corrected  were  time  and  opportunity  at  my  disposal.  It 
arose  from  the  fact  that  a  veiy  considerable  number  of  anal}rses  had  been  collected 
before  publication  was  decided  on,  and  in  these  the  discrimination  had  not  been  made. 
As  a  matter  of  uniformity  the  same  course  was  adopted  in  the  anatyses  collected  sub¬ 
sequently.  It  may  also  be  remarked  that  in  the  majority  of  analyses  no  hint  is 
afforded  in  the  statement  as  to  how  the  water  was  determined,  so  that,  even  if  special 
attention  had  been  paid  to  this  point,  decision  would  have  been  impossible  in  very 
many  cases. 

The  molecular  ratios  of  the  main  constituents  are  given  below  the  percentage 
figures.  In  calculating  these  Professor  Kemp’s  tables"  were  of  inestimable  assistance. 
The  molecular  weight  of  TiO„  was,  however,  taken  as  80,  instead  of  82,  given  by  him. 
Where  the  iron  oxides  have  not  been  separated  and  are  given  as  Fe203  only,  the 
molecular  ratio  of  this  is  given,  and  under  FeO  the  equivalent  of  this  reckoned  as 


a  Kemp,  J.  F.,  School  of  Mines  Quarterly,  Vol.  XXII,  p.  82. 


68 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


FeO,  in  brackets,  which  has  been  used  in  calculating  the  norm.  In  cases  where  the 
alkalies  are  in  excess  of  A1203 — that  is,  where  normative  acmite  is  present — the  appro¬ 
priate  molecular  amount  of  Fe203  is  given  under  this  head,  and  the  rest  calculated  as 
FeO.  It  may  be  noted  that  the  molecular  amount  of  FeO  equivalent  to  Fe203  is 
obtained  by  doubling1  that  of  the  latter. 

The  minor  constituents,  except  Ti02,  P205,  MnO,  and  BaO,  are  placed  in  the 
column  headed  “Inclusive,”  their  molecular  ratios  being  omitted.  The  order  in 
which  these  are  given  is  that  suggested  a  few  years  ago.® 

In  the  course  of  checking  the  summations  a  number  of  errors  in  the  original 
figures  have  been  detected.  In  this  case  the  correct  summation  is  placed  above,  and 
that  given  in  the  original  paper  is  placed  below  in  parentheses. 

Specific  gravity. — The  specific  gravity  of  the  rock  is  given  in  every  case  where 
it  could  be  ascertained  from  the  original  paper.  The  temperature  at  which  it  was 
determined  is  stated  in  centigrade  degrees. 

Norm. — The  norm— i.  e.,  the  composition  expressed  in  terms  of  the  “standard 
minerals” — is  given  for  each  analysis  included  in  Part  I  of  the  collection,  embracing 
those  classified  by  the  new  system,  but  is  omitted  for  those  which  are  found  in  Part 
II.  Norms  could,  of  course,  be  calculated  for  these,  but  the  poor  quality  of  the 
analyses  would  have  rendered  them  of  no  value,  if  not  positively  misleading.  They 
have  been  calculated  uniformly  according  to  the  method  prescribed  in  our  joint  paper, 
and  great  care  has  been  exercised  to  insure  correctness,  as  upon  the  norm  depends 
the  position  of  the  rock  in  the  system.  The  whole  collection  has  been  examined  a 
number  of  times,  and  many  of  my  results  have  been  collated  with  those  of  Professor 
Iddings,  who  has  also  calculated  the  norms  of  a  great  number  of  analyses.  It  is 
therefore  hoped  that  few  serious  errors  will  be  found,  though  it  can  scarcely  be 
expected  that  they  are  wholly  absent. 

In  correcting  the  proof  sheets  one  error  was  detected  in  the  classificatorv 
position  of  a  rock,  to  which  attention  may  be  called  here.  It  was  due  to  inadvert¬ 
ence,  as  the  norm  is  correctly  calculated.  The  rock  is  No.  25  of  miaskose  (p.  211), 
which  should  be  No.  2a  of  viezzenose  (p.  212). 

It  will  be  found  in  many  cases  that  recalculation  of  the  norms  will  not  furnish 
results  absolutely  identical  with  mine.  This  is  not  due  to  lack  of  uniformity  in  the 
methods,  but  partially  to  my  having  often  neglected,  as  unimportant  and  to  save 
time,  small  amounts  of  minor  constituents,  especially  P205,  Cl,  MnO,  and  BaO. 
Slight  discrepancies  may  also  be  met  with  here  and  there  in  the  amounts  of  some  of 
the  femic  minerals,  such  as  the  pyroxenes,  diopside,  and  hypersthene,  and  olivine. 
This  is  due  to  the  fact  that  the  FeO  and  MgO  have  not  always  been  distributed 
among  these  in  exactly  the  same  ratios,  as  should  be  done  in  the  precise  application 


«  Washington,  H.  S.,  Am.  Jour.  Sci.,  Vol.  X,  1900,  p.  59. 


CORRESPONDENCE  OF  NORM  AND  MODE. 


6  9 

of  our  methods  of  calculation, a  but  only  approximately  so,  to  save  time.  It  will, 
however,  seldom  occur  that  either  of  these  slight  inaccuracies  will  be  found  to  affect 
the  position  of  the  rock  in  the  system.  If  they  should,  the  rock,  in  any  case,  would 
lie  near  the  border  of  the  other  division,  and  hence  be  transitional  in  character. 

In  stating  the  norm,  the  standard  minerals  are  referred  to  by  the  symbols  which 
we  have  adopted  for  them,  a  list  of  which  will  be  found  in  the  table  of  abbreviations. 

Correspondence  of  norm  and  mode. — In  connection  with  this  matter  attention 
may  be  called  to  the  general  close  correspondence  of  norm  and  mode,  which  has 
already  been  briefly  discussed  by  us.6  If  the  norms  are  carefully  considered  in 
connection  with  the  descriptions  it  will  be  found  that  the  agreement  is  very  close  in 
a  large  proportion  of  cases,  especially  in  the  persalanes,  most  of  the  dosalanes,  and 
the  perfemanes.  Allowance  must,  of  course,  be  made  for  certain  peculiarities  of  the 
norm.  Thus,  in  mica-bearing  granites,  as  muscovite  is  not  included  among  the 
standard  minerals,  and  as  biotite  is  alferric,  these  minerals  appear  as  normative 
corundum  and  orthoclase,  or  orthoclase  and  hypersthene,  respectively,  being  meas¬ 
urable  by  the  amount  of  normative  corundum  present.  Similarly  modal  pyroxene 
and  augite,  and  much  modal  hornblende  appears  in  the  norm  as  diopside  and  hyper¬ 
sthene,  but,  as  will  be  known  to  anyone  who  has  done  much  in  calculating  modes,  this 
is  practically  the  form  in  which  they  would  be  calculated  generally  in  determining 
the  actual  mineral  composition,  unless  it  were  desired  to  do  it  with  the  greatest 
nicety,  and  allowance  were  made  for  the  aluminous  molecules,  the  correction  for 
which,  as  we  have  shown,  is  not  of  much  moment  in  most  cases.  Of  course,  in  the 
salfemanes  and  dofemanes  the  divergencies  are  more  considerable,  but  the  general 
agreement  in  the  majority  of  rocks  is  so  satisfactory  as  to  be  a  sufficient  answer  to 
some  of  the  objections  which  have  been  raised  to  the  use  of  a  theoretical  norm. 

Locality. — The  locality  names  are  those  given  by  the  author  in  each  case,  though 
space  considerations  necessitated  the  omission  of  the  more  precise  details,  such  as 
distances  in  general,  quarry  names,  etc.  If  these  are  desired,  reference  must  be 
made  to  the  original  paper. 

The  country  name  is  omitted  in  cases  where  the  State,  province,  or  district  is 
given  and  is  well  known,  though  it  is  inserted  when  the  locality  is  small  or  little 
known,  and  when  the  province,  etc.,  is  not  furnished  by  the  original  paper.  The 
endeavor  has,  however,  been  made  to  look  up  all  doubtful  localities,  so  as  to  deter¬ 
mine  the  province,  etc.  The  names  of  countries,  provinces,  and  the  larger  places 

aCross,  Iddings,  Pirsson,  Washington,  Quantitative  Classification,  p.  G46. 

b Cross,  Iddings,  Pirsson,  Washington,  op.  cit.,  p.  151.  The  statement  made  there  that  the  analyses  in  the  collection 
amounted  to  over  3,000  was  due  to  an  error  in  including  the  cards  of  the  analyses  of  serpentines  and  metamorphic  rocks 
which  had  been  collected. 


70 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


are  given  in  their  anglicised  forms,  and  in  general  the  Century  Atlas  (New  York, 
1901)  has  been  followed.  The  locality  index  will,  however,  contain  cross  references 
to  the  native  names  (as,  e.  g.,  Oesterreich  cf.  Austria),  so  that  this  will  not  be  a 
serious  difficulty  to  those  who  do  not  know  the  English  equivalents. 

Analyst. — The  name  of  the  analyst  precedes  that  of  the  author  of  the  paper, 
since  this  is  a  collection  of  analyses,  and  because  the  analyst  is  one  of  the  factors 
often  of  use  in  rating  analyses.  When  known,  the  initials  of  the  Christian  names 
are  inserted,  but,,  as  these  are  sometimes  not  given  by  the  author,  and  are  unknown 
to  me,  they  are  perforce  omitted  in  some  cases.  In  other  cases  the  name  of  the 
analyst  is  quite  disregarded  by  the  author,  when  1  have  had  to  rest  content  with  the' 
phrase  “not  stated.'’ 

Reference. — The  aim  has  been,  in  the  column  headed  “Reference,”  to  indicate 
the  author  by  whom  and  the  place  where  the  analysis  in  question  was  published  for 
the  tirst  time.  Subsequent  publications,  whether  by  the  same  author  or  by  others, 
have  been  disregarded  as  a  rule.  It  happens,  however,  that  many  analyses  made  for 
authors  who  are  connected  with  Government  surveys,  notably  that  of  the  United 
States,  have  been  tirst  published  in  papers  appearing  in  unofficial  journals,  society 
proceedings,  etc.,  and  only  subsequently  in  official  reports,  bulletins,  etc.,  of  the 
survey.  In  such  cajses  there  is  given  in  the  column  headed  “  Reference”  the  place  of 
the  tirst  (unofficial)  publication,  while  under  “Remarks”  is  noted  the  place  of  the 
first  official  publication.  This  seems  just  to  the  Survey,  since  the  analyses  were  made 
by  official  chemists. 

In  general,  such  publications  as  “Reports  of  work  done,”  etc.,  even  though 
official,  in  which  the  analysis  appears  without  any  description  of  the  rock,  are 
neglected,  unless  this  is  the  only  reference  available.  In  the  case  of  analyses  made 
b}T  the  chemists  of  the  United  States  Geological  Survey,  and  published  in  unofficial 
journals,  etc.,  but  not  in  the  official  publications  prior  to  1901,  only  the  first  reference 
is  given,  and  not  that  to  Bulletins  118  or  168  of  that  Survey,  in  which  they  may 
appear.  Reference  to  either  of  these  two  bulletins  indicates  that  this  is,  so  far,  the 
only  place  where  the  analysis  may  be  found,  except  as  one  cited  from  them.  The 
author  in  this  case  is  the  petrographer  who  has  furnished  the  description  for  the 
bulletin. 

It  must  be  noted  that  the  page  number  given  in  the  reference  is  always  that 
on  which  the  analysis  occurs,  not  that  on  which  the  paper  commences.  The  date 
given  is  that  of  the  year  of  publication,  not  that  of  the  year  for  which  the  report, 
etc.,  is  issued.  It  must  also  be  mentioned  that  there  were  found  in  the  volumes  of 
the  Neues  Jahrbuch  a  number  of  analyses,  given  in  the  Referate,  which  have  been 
published  in  papers  inaccessible  to  me,  and  which  would,  therefore,  otherwise  have 


71 


“remarks”  in  the  tables. 

escaped  incorporation  in  the  collection.  In  such  cases  the  original  reference  is  not 
given,  as  the  page  on  which  the  analysis  appears  is  never  mentioned  in  this  part  of  the 
Jahrbuch.  I  give  only  the  name  of  the  author,  with  the  reference  to  the  Neues 
Jahrbuch.  I  have,  unfortunately,  been  obliged  to  omit  some  analyses  that  have 
appeared  in  journals  published  in  languages  with  which  I  am  totally  unacquainted, 
notably  Russian,  Bohemian,  and  Hungarian,  when  the  i  i  possibility  of  understanding 
the  context  left  me  in  absolute  ignorance  as  to  the  occurrence  or  character  of  the  rock. 

‘  The  names  of  journals,  etc.,  are  given  in  abbreviated  forms,  which  have  been 
made  as  concise  as  seemed  consistent  with  proper  clearness,  and  it  has  been  an  aim 
to  establish  some  standard  forms  of  abbreviation  for  the  use  of  petrographers.  In 
this  I  have  been  aided  by,  and  have  partially  followed,  the  lists  in  Dana’s  S3^stem 
of  Mineralogy  (1892)  and  the  Geologisches  Centralblatt  (I,  1901),  though  I  have 
modified  their  abbreviations  in  many  particulars,  chiefly  in  the  direction  of  still 
further  condensation.  A  list  of  those  adopted  will  be  found  on  another  page. 

Author's  name. — Under  this  caption  is  found  the  name  of  the  rock  as  given  by 
the  author  in  the  paper  cited.  A  few  minor  changes  have  been  made,  notably  the 
replacement  of  eleolite  or  nepheline  b}^  nephelite,  and  the  occasional  shortening  of 
some  names  composed  of  those  of  several  minerals,  as  pyroxene-andesite  for  hypers- 
thene-augite-andesite,  etc.  In  a  few  cases  the  name  given  the  same  rock  by  others 
is  given  either  here  or  in  the  last  column. 

Remarks. — In  the  column  headed  “  Remarks”  will  be  found  additional  informa¬ 
tion  for  which  there  is  no  place  elsewhere  in  the  tables,  or  attention  is  here  called  to 
certain  features  of  the  analysis  of  the  rock.  Thus,  if  it  is  known,  or  if  the  analysis 
indicates,  that  the  rock  analyzed  was  not  fresh,  this  fact  will  be  stated  here.  If  the 
analysis  falls  near  the  border  of  another  division  than  that  to  which  it  is  assigned, 
this  other  will  usually  be  given.  Attention  will  also  be  called  to  unusually  low  or 
high  summations,  or  to  those  features  of  the  analysis  which  there  seems  to  be  reason 
to  regard  with  suspicion.  This  information  is  of  necessity  stated  very  concisely, 
and  in  many  cases  omitted,  since  any  discussion  is  out  of  the  question  in  the  small 
space  available. 

It  was  desired  to  insert  here  short  notes  on  the  mode  (actual  mineral  composition) 
and  the  texture,  etc.,  of  each  rock,  as  was  done  by  Roth.  It  was  found,  however, 
that  this  would  not  only  greatly  enlarge  the  tables,  but  would  consume  a  great  deal 
of  time.  The  descriptions  of  most  rocks  are  so  lengthy,  and  so  few  papers  have 
any  summary  of  the  mineral  and  textural  features  of  the  rocks  described,  that  the 
attempt  to  give  a  concise  description  would  have  involved  a  pretty  careful  reading 
and  consideration  of  each  paper.  So,  after  considerable  data  had  been  collected 
along  this  line,  the  idea  was  ultimately  abandoned. 


72 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CORRELATION  OF  TIIE  QUANTITATIVE  AND  TIIE  QUALITATIVE 

SYSTEMS. 

Since  the  present  collection  embraces  a  very  large  mass  of  data  concerning 
igneous  rocks  which  have  been  published  in  recent  years,  either  given  in  the  analyses 
or  accessible  through  the  references,  it  has  been  thought  that  this  presents  a  good 
opportunity  to  discuss  briefly  the  correlation  of  the  quantitative  system  proposed  by 
us  with  the  older  qualitative  ones.  While  this  can  be  worked  out  from  the  tables 
by  anyone,  yet  the  proceeding  would  be  laborious,  and  as  the  author  has  had  many 
of  the  prominent  features  called  to  his  attention  during  the  course  of  compilation  and 
arrangement,  it  will  be  useful  to  point  out  some  of  these  to  others,  and  to  indicate  in 
a  general  way  the  relations  of  the  new  and  the  old  systems.  This  discussion,  it  may 
be  premised,  must  be  but  sketchy  at  best,  as  full  treatment  of  many  of  the  points 
which  present  themselves  would  lead  us  too  far. 

Before  taking  up  the  subject,  however,  several  features  in  which  the  two  systems 
differ  must  be  mentioned,  which  must  be  constantly  borne  in  mind  in  the  discussion 
of  the  matter. 

One  of  these  is  that  the  new  system  introduces  some  concepts  that  are  quite 
distinct  from  any  which  have  received  formal  recognition  in  the  older  systems. 
Among  these  is  the  primary  division  into  classes  according  to  the  relative  amounts 
of  salic  and  femic  minerals.  This,  of  course,  has  certain  analogies  with  Brogger’s 
idea  of  leucocratic  and  melanocratic  rocks,  but,  based  as  it  is  on  the  idea  of  normative 
standard  minerals,  it  is  in  reality  quite  distinct.  Another  is  the  idea  of  contrasting, 
e.  g.,  the  feldspars  with  quartz  and  the  lenads  (feldspathoids),  which  consequently 
groups  together  in  one  order  many  of  the  older  syenites  and  anorthosites. 

Another  point  of  difference  is  the  greater  precision  of  deflnitibn  and  narrowness 
of  limits  of  the  various  divisions,  which  results,  on  the  one  hand,  in  a  distribution  of 
the  older  terms  over  many  of  the  new  divisions,  and,  on  the  other,  in  the  collocation 
in  one  of  the  new  divisions  of  several  of  the  older  rocks. 

A  third  point  is  the  fact  that  the  new  system  takes  no  cognizance  of  the  texture 
or  the  mode  of  rocks  in  its  magmatic  divisions  and  names,  which  are  all  that  concern 
us  here,  or  at  least  all  that  can  be  discussed.  To  study  the  possible  textural  and 
modal  phases  of  any  of  the  new  magmatic  divisions  in  detail  one  must  look  up  the 
various  references  given  in  the  tables,  although  of  course  some  of  these  will  be 
involved  or  implied  in  the  subsequent  discussion. 

Bearing  these  as  well  as  the  other  known  differences  in  mind,  we  may  take  up 
the  examination  of  the  two  systems  from  a  comparative  point  of  view.  It  will  be 
convenient  to  do  this  from  two  sides  to  see,  first,  where  some  of  the  most  important 
rock  families  and  groups  of  the  older  systems  fall  in  the  new,  and  second,  what  of  the 


CORRELATION  OF  OLD  AND  NEW  SYSTEMS. 


73 


older  rock  groups  some  of  the  more  prominent  divisions  of  the  new  system  may 
contain.  In  general  the  arrangement  of  Zirkel  will  be  followed  in  preference  to  that 
of  Rosenbusch,  since,  in  the  former,  texture  is  considered  of  less  importance  than 
mineral  composition. 

FROM  THE  QUALITATIVE  POINT  OF  VIEW. 

The  granites,  quartz-  and  granite-porphyries,  aplites,  and  rhyolites  are  widely 
scattered,  since  in  the  older  systems  little  or  no  attention  was  paid  to  the  relative 
amounts  of  quartz  and  feldspars  or  to  the  alkali  ratios  in  general.  They  fall  mostly 
in  persalane,  in  the  orders  columbare  and  britannare.  In  the  former  they  occur  in 
all  the  rangs  represented,  from  the  peralkalic  alaskase  to  the  alkalicalcic  riesenase, 
without  distinction  of  the  alkalies.  In  britannare  they  are  abundant  in  the  peralkalic 
order  liparase,  as  well  as  in  the  domalkalic  toscanase,  and  a  few  in  the  alkalicalcic 
coloradase.  Some  are  also  met  with  in  the  order  austrare  of  dosalane,  especially  in 
the  domalkalic  rang  dacase,  but  none  occur  in  the  salfemane  class.  To  specify  a  few 
particular  types,  paisanite,  comendite,  quartz-lindoite,  the  typical  bostonite  of  Mar¬ 
blehead  Neck,  and  one  grorudite  are  found  in  liparose,  while  the  alaskites  of  Spun- 
fall  in  alaskose,  liparose,  and  lassenose.  The  most  acid  of  Brogger’s  grorudites 
are  found  in  varingose  of  hispanare,  while  others  occur  in  grorudose  and  pantellerose 
of  austrare,  where  also  the  pantellerites  fall  for  the  most  part.  Alaskose,  liparose, 
and,  to  a  less  extent,  toscanose,  may  be  regarded  as  the  divisions  containing  the  most 
typical  of  these  rocks,  irrespective  of  texture. 

Syenites,  syenite-porphyries,  and  trachytes  do  not  seem  to  have  quite  such  a 
wide  range  as  the  granites,  etc.,  though  they  appear  unexpectedly  in  a  number  of 
places.  They  are  most  abundant  in  the  peralkalic  and  domalkalic  rangs  nordmarkase 
and  pulaskase  of  canadare  in  persalane,  as  well  as  to  a  less  extent  in  the  domalkalic 
rang  monzonase  of  germanare  in  dosalane.  Although  they  are  considered  to  contain 
orthoclase  as  the  predominant  feldspar,  only  a  few  are  dopotassic,  the  most  promi¬ 
nent  of  these  being  vulsinite  and  ciminite,  which  fall  respectively  in  pulaskase  and 
monzonase.  The  great  majority  are  either  sodipotassic  or  dosodic.  The  well-known 
trachytes  of  the  Phlegrean  Fields  and  Ischia  fall  in  the  sodipotassic  phlegrose,  while 
the  pulaskite  of  Arkansas,  with  other  syenites  of  the  Eastern  United  States,  fall  in 
pulaskose.  The  most  typical  of  Brogger’s  nordmarkites,  with  the  greater  part  of 
the  solvsbergites  and  aemite-trachytes,  occur  in  the  dosodic  nordmarkose.  The 
typical  laurvikites  of  Brogger,  with  many  of  the  rhomben-porphyries,  occur  in 
laurvikose,  while  most  of  his  akerites  are  to  be  met  with  in  the  dosodic  akerose  of 
monzonase.  Phlegrose,  nordmarkose,  and  pulaskose  may  be  regarded  as  the  places 
for  the  typical  syenites  and  trachytes. 


74 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


The  monzonites,  as  defined  by  Brogger,  especially  those  of  the  Tyrol  and  of 
Montana,  together  with  some  of  Ransome’s  latites,  and  the  ciminites,  which  were  all 
recognized  as  intermediate  between  syenites  and  diorites,  fall  for  the  most  part  in 
monzonase,  the  domalkalic  rang  of  germanare  in  dosalane.  Here  also  are  found 
the  gauteite  of  Hibsch,  and  many  of  Iddings’s  banakites.  Most  of  the  shoshonites 
occur  in  shoshonose,  the  sodipotassic  subrang  of  andase,  while  the  absarokites 
belong  almost  equally  to  the  dopotassic  absarokose  or  the  sodipotassic  kentallenose, 
subrangs  of  camptonase,  the  alkalicalcic  rang  of  gallare  in  salfemane. 

Of  the  nephelite-syenites,  phonolites,  and  tinguaites,  the  great  majority  belong 
either  in  the  peralkalic  rang  miaskase  of  russare  in  persalane  or  in  the  correspond¬ 
ing  laurdalase  of  norgare  in  dosalane.  A  few  are  met  with  in  nordmarkose  and  in 
laurvikose,  as  well  as  in  the  domalkalic  rang  viezzenase  of  russare.  For  the  greater 
part  they  are  dosodic,  either  in  miaskose,  which  may  be  considered  their  typical 
position,  or  in  laurdalose,  the  latter  including  the  laurdalites  of  Brogger.  The 
lujavrites  contain  more  nephelite  and  femic  minerals  than  the  majority  of  the 
nephelite-syenites,  and  are  nearly  all  in  lujavrase,  the  peralkalic  rang  of  italare,  this 
lenfelic  order  belonging  to  dosalane. 

There  are  few  superior  analyses  of  the  leucite-trachytes  and  leucite-phonolites, 
but  all  of  these  are  to  be  found  in  domalkalic  rangs,  for  the  most  part  in  the 
dopotassic  subrangs  vulsinose  and  ciminose,  and  the  sodipotassic  beemerose. 

The  diorites  and  their  porphyries  are  pretty  well  distributed  through  the  less 
alkalic  rangs  of  britannare  in  persalane  and  austrare  and  germanare  in  dosalane. 
There  are  only  a  few  to  be  found  in  the  salfemane  class,  this  being  due  to  the  fact 
that  the  abundant  hornblende  and  biotite  contain  much  normative  feldspar,  which 
throws  most  of  these  rocks  with  about  equal  amounts  of  feldspars  and  dark  alferric 
minerals  in  the  dosalane  class.  Quartz -diorites  and  granodiorites  occur  in  the  alkali- 
calcic  rang  coloradase  of  britannare,  the  domalkalic  dacase,  and  the  alkalicalcic 
tonalase  of  austrare,  some  of  them  being  sodipotassic  in  adamellose  and  harzose, 
while  still  more,  of  course,  are  in  the  dosodic  yellowstonose,  dacose,  and  tonalose. 
The  dacites,  while  fewer  in  number,  are  quite  widely  scattered,  many  of  them  falling- 
in  lassenose,  amiatose,  yellowstonose,  dacose,  and  tonalose.  The  diorites  proper  also 
are  very  divergent,  but  are  most  numerous  in  ^yellowstonose,  tonalose,  monzonose, 
akerose,  shoshonose,  and  andose.  The  andesites  seem  in  general  to  carry  more 
normative  quartz  than  the  diorites,  and  are  found  mostly  in  amiatose,  yellowstonose, 
tonalose,  and  andose,  as  well  as  in  many  other  divisions.  There  does  not  seem  to  be 
so  large  a  proportion  of  sodipotassic  andesites  as  of  diorites.  The  majority  of  the 
typical  camptonites  belong  to  camptonose,  in  the  order  gallare  of  salfemane.  They 
are  thus  more  “basic”  than  most  diorites,  though  some  of  these  also  fall  in  gallare. 


CORRELATION  OF  OLD  AND  NEW  SYSTEMS. 


75 


With  the  gabbros,  norites,  diabases,  and  basalts  we  leave  almost  entirely  the 
persalane  class,  an  overwhelming  proportion  of  these  falling  in  dosalane  and  salfe- 
mane.  These  rocks  belong  almost  entirely  to  the  perfelic  orders  germanare  and 
gallare,  more  particularly  in  the  alkaliealcic  rangs  shoshonase  and  camptonase,  and 
still  more  abundantly  in  the  docalcic  hessase  and  auvergnase.  Hessose  and  auverg- 
nose  may  be  regarded  as  the  most  representative  divisions  for  these  rocks.  The 
anorthosites  fall,  of  course,  in  the  perfelic  order  canadare  of  persalane,  most  of  them 
being  in  the  docalcic  labradorase  and  only  a  few  in  the  percalcic  canadase. 

The  most  typical  theralites  and  essexites  fall  together  in  essexose,  and  are  thus 
lendofelic  and  dosalic.  The  majority  of  the  monchiquites,  however,  are  salfemic, 
though  also  lendofelic  and  domalkalic,  and  are  to  be  found  mostly  in  monchiquose, 
though  a  few  occur  elsewhere. 

Of  the  nephelite-  and  leucite-basalts,  tephrites  and  basanites,  leucitites  and 
nephelinites,  there  are  comparatively  few  superior  analyses,  but  most  of  them  are 
found  in  italare  and  campanare  of  dosalane  and  in  portugare,  kamerunare,  and 
bohemare  of  salfemane,  while  a  few  are  in  the  dofemane  class.  They  are  all  either 
domalkalic  or  alkaliealcic,  but  the  analyses  are  so  few  and  so  scattered  that  it  seems 
scarcely  worth  while  giving  the  rangs  and  subrangs  where  the}T  occur.  The  ijolites 
fall  in  ijolase  of  finnare  (salfemane),  and  the  urtites  in  urtase  of  lappare  (dosalane). 

The  few  analyses  of  limburgites  and  augitites  are  somewhat  scattered,  but  the 
most  typical  belong  to  the  dosodic  limburgose,  in  the  alkaliealcic  limburgase.  They 
are  thus  seen  to  contain  considerable  normative  nephelite  subordinate  to  feldspar 
(portugare),  and  with  equal  amounts  of  salic  and  femic  minerals  (salfemane). 

The  position  of  the  melilite-basalts  and  alnoites  is  somewhat  uncertain,  owing  to 
the  paucity  of  analyses  and  the  decomposed  condition  of  all  the  alnoites  analyzed  as 
}ret.  Those  analyses  which  can  be  used  place  these  rocks,  for  the  most  part,  in  the 
dofemanes,  and  more  particularly  in  the  suborders  paoliare  and  texiare  of  scotare, 
and  in  domiric  rangs  of  these. 

Coming  to  the  peridotites  and  pyroxenites,  it  is  seen  that  so  few  analyses  of 
these  are  available  that  are  either  o-ood  or  made  on  fresh  material  that  any  correla- 
tion  must  be  unsatisfactory.  It  is  evident  that  rocks  belonging  to  these  groups 
have  been  comparatively  little  investigated,  partly  on  account  of  their  greater  rarity 
and  partly  on  account  of  their  generally  decomposed  condition.  It  is  also  clear 
that  they  have  been,  so  far,  differentiated  or  discriminated  between  as  to  impor¬ 
tant  differences  only  to  a  very  small  extent  in  previous  classifications,  many  rocks  of 
varying  composition  and  character  being  grouped  together  under  one  name.  This, 
of  course,  is  a  consequence  of  the  importance  assigned  to  the  feldspars,  as  well  as 
of  the  nonrecognition  of  the  logical  principle  that  any  constituent  should  have 
weight  in  classification  in  proportion  to  the  amount  present  in  any  case. 


76 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


It  will  therefore  be  useful  here  only  to  give  a  few  instances  of  the  positions 
of  older,  very  femic,  rock  types  in  the  new  system.  The  dunites  fall  in  the  per- 
magnesic  dunose,  in  the  perolic  section  maoiiare  of  the  perpolic  maorare  in  perfe- 
mane.  Websterite  and  a  few  other  such  pure  pyroxenites  are  found  in  websterose 
and  cecilose  of  the  perpyric  section  caroliniare  of  the  same  order,  maorare.  Other 
groups,  as  wehrlite,  lherzolite,  saxonite,-  peridotite,  picrite,  etc.,  are  represented  by 
so  few  usable  analyses,  and  these  so  scattered,  that  their  correlation  here  is  not 
advisable.  Much  more  work  must  be  done  on  all  these  rocks  before  they  can  be 
properly  classified. 


FROM  THE  QUANTITATIVE  POINT  OF  VIEW. 

The  correlation  from  the  point  of  view  of  the  new  quantitative  system  will 
involve  some  repetition  of  what  has  been  given  above,  and  we  may  confine  it  to  the 
more  important  divisions  and  give  only  some  of  the  more  interesting  and  better  known 
rocks  which  fall  in  each.  Beginning  with  persalane,  no  analyses  of  victorare  are  as 
yet  known,  but  this  order  is  represented  by  quartz  veins  of  igneous  origin.  The 
belgares  are  represented  by  only  a  few  rocks,  for  the  most  part  highly  acid  porphyries 
and  rhyolites,  with  two  dacites  and  the  Grainsgill  greisen  of  Harker.  The  col um bares 
are  represented  by  granites,  granitites,  porphyries,  aplites,  rhyolites,  and  liparites, 
there  being  in  the  present  systems,  as  a  general  rule,  no  distinction  made  among  those 
that  fall  here  in  regard  to  the  proportions  of  alkalies  to  lime  or  soda  to  potash.  The 
britannares  likewise  embrace  rocks  called  by  the  same  names,  but  granodiorites, 
quartz-diorites,  dacites,  and  andesites  begin  to  appear  sporadically  in  the  domalkalic 
and  alkalicalcic  rangs.  The  domalkalic  toscanase  contains  the  more  clearly  defined 
dellenites  (in  dellenose)  and  toscanites  (in  toscanose).  There  are  a  few  cases  of  dis¬ 
tinct  names  bestowed  on  certain  rocks  on  account  of  the  presence  of  peculiar  dark 
minerals,  though  in  very  small  amount,  as  with  paisanite  and  eomendite,  whose 
analyses  differ  in  no  respect  from  those  of  other  rocks,  such  as  granites,  porphyries, 
and  rhyolites,  which  have  not  been  so  distinguished.  This  is  an  excellent  illustration 
of  the  prevailing  habit  of  giving  a  distinct  name  if  an  unusual  mineral  is  present, 
even  in  small  amount,  while  quantitative  distinctions  of  much  greater  real  importance 
are  ignored. 

The  canadares  are  represented  by  a  considerable  assortment  of  highly  feldspathic 
rocks,  ranging  from  true  syenites  and  trachytes,  with  only  alkali  feldspars  present, 
to  the  anorthosites.  Of  the  rocks  that  belong  in  the  peralkalic  nordmarkase,  there 
are  none  known  that  are  either  perpotassic  or  dopotassic,  the  majority  being  either 
sodipotassic  or  dosodic,  the  latter  subrang  (nordmarkose)  containing  litchfieldite, 
nordmarkite,  and  solvsbergite.  Two  of  the  persodic  tuolumnoses  have  been  called 
soda-syenite  by  Becker  and  by  Turner.  The  domalkalic  rang  pulaskase  includes,  in 


CORRELATION  OF  OLD  AND  NEW  SYSTEMS. 


77 


its  dopotassic  subrang  vulsinose,  the  vulsinites  of  Italy  described  by  me,  with  a 
chemically  equivalent,  but  modally  different,  leucite-trachyte,  as  well  as  the  peculiar 
leucite-gra»ite-porphyry  described  by  Mussak,  in  which,  however,  the  primary  nature 
of  the  quartz  is  somewhat  doubtful.  The  sodipotassic  pulaskose  is  represented  by 
the  pulaskite  of  Arkansas,  with  other  syenites  and  trachytes,  and  an  andesite  or  two. 
The  dosodic  laurvikose  contains  laurvikites,  and  rhomben- porphyries,  with  a  tons- 
bergite,  and  some  syenites,  trachytes,  and  andesites.  A  number  of  the  rocks  which 
fall  in  nordmarkase  and  pulaskase  carry  small  amounts  of  nephelite,  so  that  they 
have  been  called  nephelite-syenites,  but  not  enough,  according  to  the  classification 
proposed,  to  place  them  in  the  order  russare.  The  docalcic  labradorase  is  repre¬ 
sented  by  anorthosites  and  u  labradorite  rocks”  of  Minnesota,  Canada,  Norway, 
and  Russia,  while  the  percalcic  canadase  contains  a  few  anorthosites  from  Maine  and 
Ontario. 

The  lendofelic  order  russare  contains  many  nephelite-syenites,  with  phonolites 
and  tinguaites.  They  are  mostly  peralkalic,  belonging  to  miaskase.  The  sodipo¬ 
tassic  subrang  of  this,  beemerose,  includes  some  leucite-phonolites  and  leucite- 
tinguaites,  which  are  chemically  identical  with,  but  modally  distinct  from,  the 
nephelite-syenites  also  belonging  here.  The  persodic  mariupolose  is  represented  by 
the  mariupolite  recently  described  by  Morozewicz.  The  domalkalic  viezzenase  con¬ 
tains  only  a  few  rocks,  of  which  the  most  important  is  the  nephelite-porphyry  of 
Yiezzenathal.  Predazzo,  with  some  nephelite-syenites  and  tinguaites  rather  low  in 
silica.  To  tasmanare,  in  which  the  feldspars  and  feldspathoids  are  present  in  equal 
amount,  there  belong  only  three  nephelite-syenites  and  nephelite-porphyries.  Of 
rocks  belonging  to  the  last  two  orders  of  persalane,  that  is,  rocks  composed  dominantly 
or  entirely  of  nephelite  or  leucite,  there  are  no  analyses. 

The  corundum- bearing  subclasses  of  persalane  are  represented  by  only  seven 
analyses.  Two  of  these  belonging  to  the  second  subclass  (with  quartz,  feldspar,  and 
feldspathoid  dominant  over  corundum)  are  of  the  perfelic  order  indare,  so  named 
from  the  corundum-syenites  of  India,  though  unfortunately  no  analyses  of  these  are 
available.  The  only  two  rocks  which  are  known  to  belong  here  are  a  corundum- 
syenite  and  a  corundum-pegmatite  from  the  Urals,  described  by  Morozewicz.  In  the 
third  subclass,  with  corundum  equal  in  amount  to  the  other  salic  minerals,  we  find 
the  kvschtymites  of  Morozewicz,  which  are  perfelic  (order  siberare)  and  either 
docalcic  or  percalcic. 

In  the  dosalane  class,  which  is  the  most  largely  represented  of  all,  we  find  no 
rocks  which  belong  in  the  first  two  orders,  though  rockallite  (in  salfemane)  falls 
nearly  in  order  2.  In  hispanare  there  are  only  a  few  rocks,  most  of  them  in  the  per¬ 
alkalic  rang  varingase,  to  which  belong  the  grorudite  of  Varingskollen  and  a  pantel- 
lerite  of  Khagriar.  In  almerose  is  found  the  cordierite-andesite  of  Cabo  de  .Gata. 


78 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


The  order  austrare,  with  feldspar  dominant  over  quartz,  is  a  large  and  impor¬ 
tant  one.  The  peralkalic  rang  pantellerase  includes,  in  the  sodipotassic  grorudose, 
the  typical  grorudite  of  Grussletten  and  one  or  two  panteller ites,  and  in  the  dosodic 
pantellerose  other  pantellerites.  The  domalkalic  dacase  contains  syenites,  rhyolites, 
quartz-diorites,  porphyrites,  andesites,  and  dacites.  The  alkalicalcic  rang  tonalase 
embraces  quartz-diorites  and  tonalites,  granodiorites,  diorites,  monzonites,  andesites, 
latites,  and  dacites.  Its  dosodic  subrang  tonalose  is  of  especial  interest,  as  there  fall 
here  the  average  igneous  rock  of  the  globe  and  of  the  United  States,  as  calculated  by 
Clarke,  and  that  of  Great  Britain,  as  calculated  by  Harker.  The  docalcic  bandase  is 
is  not  very  largely  represented,  some  quartz-diorites,  diorites,  andesites,  and  basalts 
falling  here,  among  them  andesites  of  Japan,  a  quartz-basalt  of  Lassen  Peak,  and 
some  Maryland  diorites. 

The  perfelic  order  germanare  embraces  a  very  wide  range  of  rocks  under  the 
qualitative  systems.  The  peralkalic  umptekase  contains  the  umptekite  of  Kola,  with, 
among  other  things,  a  hedrumite  and  a  heumite  of  Brogger,  the  so-called  nephelite- 
syenite  of  Red  Hill  and  the  umptekite  of  Beverly,  Mass.,  with  two  solvsbergites. 

The  domalkalic  monzonase  has  in  its  dopotassic  subrang  ciminose  the  ciminites 
of  Viterbo,  with  a  chemically  equivalent  leucite-trachyte,  the  “mica-trachyte”  of 
Monte  Catini,  and  the  durbachite  described  by  Sauer.  The  sodipotassic  subrang 
monzonose  is  represented  by  the  monzonites  of  Predazzo  and  Monzoni,  as  well  as 
those  of  Yogo  Peak  (yogoite)  and  Beaver  Creek,  Montana,  most  of  the  banakites  of 
Iddings,  some  of  the  Californian  latites  of  Ransome,  mica-basalts  from  Arizona,  the 
gauteite  of  Hibsch,  the  Arso  olivine- trachyte,  and  many  porphyrites,  syenites,  etc., 
with  a  few  kersantites.  The  dosodic  akerose  contains  some  of  Broggers  akerites,  with 
the  soda-minette  of  Brathagen,  the  verite  of  Osann,  and  many  syenites,  porphyrites, 
andesites,  etc.,  as  well  as  five  “ segregations  in  granite”  from  Mount  Ascutney. 

The  alkalicalcic  rang  andase  is  a  large  one,  embracing  many  diorites,  andesites, 
gabbros,  basalts,  etc.  The  augite-minette  of  the  Plauensche  Grund  is  the  only  rock 
found  in  its  dopotassic  subrang.  The  majority  of  Iddings’s  shoshonites  fall  in  the 
sodipotassic  shoshonose,  with  some  leucite-banakites,  and  here  also  belong  some  of 
the  latites  of  California,  a  few  kersantites,  and  one  of  Pfohl’s  analyses  of  the  Rong- 
stock  essexite.  To  the  dosodic  andose,  which  is  chiefly  made  up  of  diorites  and 
andesites,  belong  the  quartz-basalts  of  Rio  Grande  Canvon,  New  Mexico,  and  those  of 
the  Cinder  Cone  in  California.  The  persodic  beerbachose  is  named  from  the  beer- 
bachite  of  the  Odenwald,  and  includes  also  some  diorites,  gabbros,  basalts,  etc.,  with 
a  luciite-porphyry  of  Chelius.  The  docalcic  hessase  embraces  principally  gabbros, 
diabases,  and  basalts,  with  the  typical  luciite  of  Chelius.  The  percalcic  corsase 
is  named  after  the  corsite  from  Corsica,  though  no  good  analysis  of  this  is  known. 
The  only  rocks  actually  found  here  are  a  diorite  of  Maryland  and  two  gabbros. 


CORRELATION  OF  OLD  AND  NEW  SYSTEMS. 


79 


The  lendofelic  order  norgare  derives  its  name  from  the  nephelite  rocks  of  Nor¬ 
way,  so  admirably  described  by  Brogger.  In  the  peralkalic  rang  laurdalase,  the 
dopotassic  subrang  is  represented  by  a  pseudoleucite-syenite  of  the  Highwood 
Mountains,  while  the  sodipotassic  judithose  contains  the  potash-tinguaites  of  Mon¬ 
tana  and  a  leucite-tinguaite  and  a  nephelite-syenite  of  Magnet  Cove.  The  dosodic 
laurdalose  includes,  besides  the  typical  laurdalite,  the  tinguaite  and  mica-syenite 
of  Hedrum,  the  soda-minette  of  Hao,  with  some  other  nephelite-syenites  and  tingua- 
ites.  The  domalkalic  essexase  contains,  in  the  sodipotassic  borolanose,  the  borolanite 
from  Scotland,  the  covite  from  Magnet  Cove,  a  few  Montana  syenites,  and  a  leucite- 
tephrite.  The  dosodic  essexose  is  represented  by  the  typical  essexite  of  Salem  Neck, 
a  few  Norwegian  rocks,  including  a  heumite  and  a  laurdalite,  one  analysis  of  the 
Rongstock  essexite,  and  the  Phrygian  kulaites.  The  alkalicalcic  salemose  contains 
but  few  rocks,  the  most  typical  of  which  is  the  hornblende-gabbro  of  Salem  Neck. 

The  lenfelic  order  italare  is  not  large.  The  peralkalic  rang  lujavrase  embraces 
the  lujavrites  of  Finland  and  Gieenland,  a  camptonitic-tinguaite  from  Portugal,  a 
nephelinite  from  Alno,-  and  a  basanite  from  Texas.  The  domalkalic  rang  vulturase 
includes  in  the  dopotassic  subrang,  to  which  I  have  given  the  name  braccianose, 
leucitites  and  leucite-tephrites  of  Braeciano,  with  a  Yesuvian  lava,  while  the  dosodic 
vulturose  contains  the  hauynophyr  of  Melfi.  The  alkalicalcic  rang  includes  some 
Vesuvian  lavas  and  a  leucite-tephrite  of  Rocca  Montina.  The  dolenic  order  campa- 
nare  is  represented  almost  exclusively  by  Yesuvian  lavas,  and  the  perlenic  lappare 
contains,  in  the  sodipotassic  subrang  arkansose,  the  leucite-syenite  of  Magnet  Cove,  and, 
in  the  dosodic  urtose,  the  urtites  of  Kola  and  probably  the  sussexite  of  New  Jersey. 

In  salfemane  the  quartzose  orders  are  very  scantily  represented.  The  quarfelic 
atlantare  includes  only  the  rockallite  of  Judd,  which  is  near  the  border  of  dosalane, 
and  a  pantellerite.  The  quardofelic  order  vaalare  embraces  only  a  few  basalts  and 
diabases,  especially  some  from  Cape  Colon}7  and  the  Orange  River  Colony.  These 
are  notable  for  their  low  alumina,  and  while  in  most  the  quartz  is  normative,  in  some 
it  is  modal. 

The  large  perfelic  order  gallare  is  represented  in  general  by  gabbros,  diabases, 
basalts,  etc.  Its  peralkalic  rang  orendase  includes  the  orendite  and  one  wyomingite 
of  the  Leucite  Hills,  while  two  absarokites  and  a  kersantite  are  the  rocks  of  most 
interest  in  the  domalkalic  kilauase,  which  includes  also  some  basalts,  etc.  In  the 
alkalicalcic  camptonase  the  dopotassic  absarokose  is  represented  by  the  most  typical 
of  Iddings’s  absarokites,  while  in  the  sodipotassic  kentallenose  are  found,  besides  the 
kentallenite  of  Hill  and  Kynaston,  the  olivine-inonzonite  of  Smalingen,  and  a  few 
lamprophyres,  absarokites,  and  basalts.  The  dosodic  camptonose  does  not  include 
the  original  rock  analyzed  by  Hawes,  which  was  not  fresh,  but  a  number  of  typical 
camptonites  from  New  Hampshire  and  Norway,  besides  gabbros,  diabases,  and 


80 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


basalts.  The  persodic  ornose,  so  called  from  the  ornoite  (basic  hornblende-albite 
rock)  of  Cederstrom,  is  also  represented  chiefly  by  diabases  and  basalts;  The  clocalcic 
auvergnase,  named  after  the  basalts  of  Auvergne,  one  or  two  of  the  older  analyses  of 
which  fall  here,  is  likewise  represented  chiefly  by  gabbros,  diabases,  and  basalts, 
with  a  diorite  or  two.  The  essexite  of  Solvsberg  falls  here,  with  a  monchiquite  and 
a  fourchite  from  Arkansas,  and  some  of  the  ariegites  of  Lacroix.  The  percalcic 
order  kedabekase  is  represented  almost  solely  by  the  kedabekites  of  Federof,  some 
of  Lacroix’s  ariegites,  and  some  gabbros  from  Maryland. 

In  portugare  the  peralkalic  rang  is  best  represented  by  a  wyomingite  of  the 
Leucitc  Hills,  an  arfvedsonite-tinguaite  from  Greenland,  and  a  shonkinite  and  a 
monchiquite  from  Montana.  The  domalkalic  monchiquase  embraces,  in  the  sodipo- 
tassic  shonkinose  the  shonkinites  of  Square  Butte  and  Yogo  Peak,  as  well  as  a  leucite- 
basalt  and  a  leucite-svenite  of  the  High  wood  Mountains,  while  in  the  dosodic 
monchiquose  fall  a  number  of  typical  monchiquites  from  Brazil  and  Montana  and 
some  Bohemian  tephrites.  In  the  alkalicalcic  limburgase  the  sodipotassic  ourose 
contains  two  monchiquites,  and  the  dosodic  limburgose  a  number  of  limburgites, 
camptonites,  essexites,  basanites,  etc.  The  docalcic  rang  contains  but  few  rocks, 
among  them  a  hornblende-gabbro  from  Ivrea  and  a  limburgite  from  Cape  Verde. 

The  lenfelic  order  kamerunare  has  few  representatives.  Among  these  are,  in 
the  peralkalic  malignase,  the  malignites  of  Lawson;  in  the  domalkalic  kamerunase,  a 
leucite- basalt  from  Montana,  a  Norwegian  heumite,  Broggers  farrisite,  a  theralite  of 
Kola,  and  nephelinites  of  the  Etinde  Volcano  in  Kamerun.  The  alkalicalcic  etindase 
contains  a  ouachitite  of  Hot  Springs  (not  fresh),  with  some  nephelite-basalts,  etc. 

The  dolenic  bohemare  is  very  small,  embracing  a  leucitite  of  the  Bearpaw  Moun¬ 
tains,  the  leucitite  of  Capo  di  Bove,  a  melilite-basalt  from  the  Hegau,  the  ijolite  of 
Magnet  Cove,  and  a  few  nephelinites,  etc.  Finnare  includes  only  the  madupite  of 
Cross  in  the  dopotassic  madupose,  and  the  Finnish  ijolites  in  the  dosodic  iiwaarose 
and  the  persodic  ijolose. 

The  dofemanes,  as  has  been  already  remarked,  are  very  few  in  number,  so  they 
may  be  reviewed  briefly.  In  the  perolic  order  hungarare  the  perpyric  section  min- 
nesotiare  contains  a  wchrlite,  a  cortlandtite,  and  a  limburgite,  with  gabbros  and 
norites.  The  missourite  of  Weed  and  Pirsson  falls  here,  but  is  very  near  the  border 
of  salfemane,  and  in  case  it  were  a  little  more  salic  or  less  femic  would  be  found  in 
albanose  of  bohemare.  In  the  pvrolic  hungariare  are  found  wehrlite,  peridotites, 
and  picrites,  and  some  gabbros.  In  the  perolic  pvreniare  occur  lherzolites  of  the 
Pyrenees,  and  in  the  calcimiric  section  of  Iherzase  the  venanzite  of  Sabatini  (euktolite 
of  Rosenbusch). 

rrhe  dopolic  order  scotare,  in  its  perpyric  section,  includes  some  pyroxenites, 
especially  that  of  Brandberg.  In  the  dopyric  section  paoliare  are  found  gabbros, 


CLASSIFICATORY  POSITION  OF  METEORITES. 


81 


peridot ites,  some  very  basic  nephelite-basalts,  and  jacupirangites  of  Brazil  and  Magnet 
Cove.  To  the  pyrolic  section  texiare  belong  nephelite-basalts  of  Texas  and  Saxony, 
with  melilite-basalts  of  the  Hegau  and  Westphalia.  In  the  domolic  section  occur 
peridotites  and  melilite-basalts. 

The  polmitic  order  sverigare  is  small,  including  as  yet  only  an  ilmenite-norite, 
the  avezacite  of  Lacroix,  and  two  melilite-basalts.  The  domitic  order  adirondackare 
includes  the  ores  of  the  Adirondacks,  and  probably  others  not  yet  analyzed. 

The  perfemanes  are  even  more  scantily  represented  b}r  analyses  than  the  dofe- 
manes,  and  analyses  of  rocks  belonging  to  only  one  order— the  perpolic  maorare — 
are  to  be  found  in  the  collection,  though  rocks  certainly  belonging  elsewhere  in 
perfemane  have  been  found  and  described  though  not  analyzed.  The  perpyric 
section — caroliniare — includes  websterite  and  other  pure  pyroxenites,  and  the  dopyric 
marylandiare  contains  only  a  norite,  a  lherzolite,  and  a  pyroxenite.  The  domolic 
section  includes  a  saxonite,  a  lherzolite,  and  a  peridotite,  while  the  perolic  maoriare 
is  represented  by  dunites  of  New  Zealand,  North  Carolina,  and  British  Columbia. 


METEORITES. 

In  connection  with  the  correlation  of  Classes  IV  and  V  it  may  be  of  interest  to  call 
attention  to  the  fact  these  will  include  the  great  majority  of  meteorites,  both  stones 
and  irons,  if  they  are  of  igneous  origin,  as  there  is  very  good  reason  to  consider 
them  in  most  cases,  and  so  classifiable  according  to  the  proposed  system.  A  few  will 
be  found  in  dofemane,  but  the  greater  part  will  undoubted^  belong  to  perfemane. 
Those  with  no  or  with  only  negligible  amounts  of  nickel-iron,  schreibersite,  and 
troilite  would  fall  in  Subclass  I  of  perfemane,  like  the  terrestrial  rocks  found  in  the 
collection  and  in  various  sections  of  the  perpolic  order  maorare,  according  to  the 
relative  amounts  of  pyroxene  and  olivine.  Those  with  notable  amounts  of  nickel- 
iron,  etc.,  would  fall  in  other  subclasses,  according  to  their  content  in  these  minerals, 
and  in  the  section  corresponding  to  the  presence  of  these  in  extreme  amount,  as 
compared  with  apatite,  fluorite,  etc. 

It  may  be  added  that  the  present  systems  of  classification  for  meteorites  are 
open  to  the  same  objections  as  the  older,  qualitative,  petrographical  systems,  and 
that  the  classification  recently  proposed  is  as  applicable  to  these  bodies,  when  of 
igneous  origin,  as  it  is  to  terrestrial  igneous  rocks;  possibly  with  some  modifications. 


CALCULATION  OF  CENTER  POINTS. 

INTRODUCTORY. 

The  analyses  presented  in  Part  I  give  many  examples  of  the  chemical  composi¬ 
tions  of  rocks  falling  in  most  of  the  possible  classificatory  divisions,  clustered  around 
the  center  points,  within  the  limits  in  variability  of  composition  set  by  the  divisional 


14128 — No.  14—03 - 6 


82 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


borders.  But  it  will  in  the  future,  probably,  often  be  found  interesting,  if  not  use¬ 
ful,  to  have  a  knowledge  of  the  theoretical  composition  of  a  rock  occupying  the 
exact  center  point  of  any  division,  as  a  basis  for  comparison. 

Before  beginningthe  discussion  it  will  be  as  well  to  explain  what  is  meant  by  a 
center  point  and  its  composition.  As  will  be  recalled,  the  system  recently  proposed 
is  constructed  by  a  successive  dichotomous  division  of  the  various  rock  components, 
mineral  and  chemical,  and  b}r  the  selection  of  certain  definite  ratios  between  pairs  of 
these  as  center  points  of  the  several  divisions.  The  division  is  usually  fivefold,  but  in 
some  instances  threefold.  In  the  usual  case  of  the  five  center  points  two  will  be  where 
one  factor  is  present  to  the  exclusion  of  the  other,  one  where  both  are  present  in 
equal  amount,  and  two  where  one  is  present  in  amount  three  times  the  other.  Intbe 
threefold  division  one  center  point  will  be  where  both  factors  are  present  in  equal 
amount  and  two  where  the  amount  of  one  is  4.3333+  times  that  of  the  other.  The 
last  case  we  may  leave  out  of  account,  and  for  the  sake  of  simplicity  assume  that  the 
two  center  points  here  will  also  be  where  one  factor  is  present  to  the  exclusion  of  the 
other.  The  error  will  not  be  great. 

It  will  be  seen  that  the  center  points  are  of  two  kinds — one  where  the  two  factors 
are  present  in  equal  amount  or  the  center  point  is  symmetrical,  the  other  where  they 
are  unequal  in  amount  or  it  is  asymmetrical. 

If,  now,  we  wish  to  define  the  center  point  of  any  division  and  ascertain  its 
composition,  it  will  be  necessary  to  carry  the  classification  down  as  far  as  is  possible. 
Otherwise  we  shall  not  be  complete  in  our  definition  and  shall  not  be  able  to  give  all 
the  details  of  the  composition.  Thus,  if  we  should  wish  to  state  the  center  point  of 
monzonase,  for  instance,  the  domalkalic  rang  of  the  perfelic  order  of  dosalane,  and 
its  composition,  we  can  define  it  in  terms  of  the  higher  divisions.  The  class  center 

point  will  be  where  the  salic  minerals  are  three  times  the  femic,  the  order  center 

• 

point  where  feldspar  is  present  to  the  exclusion  of  quartz  and  lenad,  and  the  rang 
center  point  where  the  alkalies  are  three  times  the  salic  lime.  But  going  further 
than  this  we  are  left  in  a  state  of  uncertainty,  owing  to  insufficiency  of  definition. 
The  ratio  of  potash  to  soda  may  be  either  of  the  five  possible  ones,  and  those  of  the 
various  femic  minerals  and  their  chemical  constituents,  on  which  the  grads  and 
subgrads  are  based,  may  also  be  any  one  of  five  in  each  case.  We  must  therefore, 
in  such  incomplete  propositions,  make  the  assumption -that  below  the  given  division 
the  center  point  of  each  successively  smaller  one  will  be  the  symmetrical  center  point 
where  the  factors  are  present  in  equal  amount. 

On  the  other  hand,  working  up  in  the  contrary  direction,  if  we  start  with  a 
division  which  is  incapable  of  further  subdivision,  we  merely  follow  the  center  points 
of  the  successively  higher  divisions  as  they  occur  according  to  the  definition.  Thus, 
if  we  wish  the  composition  of  liparose,  which  is  incapable  of  further  subdivision 
into  grads,  as  it  is  a  subrang  of  persalane,  we  know  that  its  successive  center  points 
are  where  potash  and  soda  are  equal,  where  alkalies  are  extreme  over  lime,  where 


CALCULATION  OF  CENTER  POINTS. 


83 


feldspars  are  dominant  over  quartz,  and  finally  where  the  salic  minerals  are  extreme 
over  the  femic.  With  these  data  we  can  readily  ascertain  its  center-point  composi¬ 
tion,  both  normative  and  chemical. 

It  follows  from  this  that  in  the  second,  third,  and  fourth  classes  the  statement 
of  the  subrang  is  not  sufficient  to  enable  us  to  ascertain  the  composition  of  the  center 
point,  as  the  relations  of  the  subordinate  femic  minerals  are  not  stated.  In  this  case 
we  can  only  make  an  assumption  in  regard  to  them.  If  we  wish  absolute  knowledge 
we  must  have  also  the  grad  and  subgrad  given.  Then  our  data  will  be  complete. 

As  this  system  is  purely  quantitative,  so  far  as  the  magmatic  units  are  concerned, 
the  problem  can  be  solved  in  an  exact  mathematical  way,  and  the  process  which,  it 
has  been  found,  can  be  readily  and  advantageously  carried  out  is  here  presented. 

The  basis  on  which  it  rests  is,  that  for  the  center  point  of  each  of  the  hierarchical 
divisions  an  equation  can  be  formed  expressing  mathematically  its  normative  or 
chemical  character.  The  solution  of  this,  in  any  given  case,  yields  the  composition 
in  terms  of  the  norm,  from  which  the  chemical  composition  is  readily  found. 

As  a  preliminary,  it  is  to  be  noted  that  in  classes  we  are  dealing  with  the  rela¬ 
tions  of  the  salic  and  the  femic  minerals  present,  these  two  groups  being  essentially 
unlike  in  chemical  character,  and  consequently  to  be  treated  separately.  In  the 
divisions  from  order  to  subrang,  inclusive,  and  their  sections  when  needed,  which 
may  be  called  collective!}7  the  major  divisions  of  class,  we  have  to  do  only  with  the  pre¬ 
ponderant  normative  minerals.  These  will  be  salic  in  Classes  1, 11,  and  III,  persalane, 
dosalane,  and  salfemane,  and  will  be  femic  in  Classes  IV  and  V,  dofemane  and  perfe- 
mane.  In  the  divisions  from  grad  to  subgrad,  including  their  sections,  which  may 
be  called  collectively  the  minor  divisions  of  class,  we  are  dealing  with  the  subordinate 
normative  minerals.  These  will  be  femic  in  Classes  I,  II,  and  III,  and  salic  in  Classes 
IV  and  Y. 

The  problem,  therefore,  if  we  wish  to  determine  the  composition  of  the  center 
point  as  exactly  as  possible — that  is,  down  to  subgrad  or  a  section  of  this — resolves 
itself  into  determining  the  composition,  first,  of  the  preponderant  portion,  whether 
salic  or  femic,  then  of  the  subordinate  group,  whether  femic  or  salic,  and  combining 
these  in  the  proportions  indicated  by  the  class. 

Thus  in  the  persalanes  the  amount  of  femic  mineral  at  the  ideal  center  point  is 
nil,  and  consequently  only  the  composition  corresponding  to  the  salic  subrang  is 
needed.  Conversely,  in  the  perfemanes  the  composition  of  the  femic  portion,  i.  e., 
the  subrang,  is  all  that  we  require.  In  the  other  classes,  on  the  other  hand,  we  need 
to  have  a  knowledge  of  both  the  appropriate  salic  or  femic  subrang  and  the  femic  or 
salic  subgrad  to  give  the  complete  composition  of  the  center  point.  Letting  2  stand 
for  the  composition  of  the  salic  portion  and  $  for  that  of  the  femic,  the  composition 
of  a  dosalane  would  be  32+  $,  that  of  a  salfemane  2+$,  and  that  of  a  dofemane 
2+3$.  The  chemical  composition  of  the  subgrad  desired  would  then  be  obtained 
by  combining  2  and  $  as  found  in  the  proper  proportions  and  reducing  to  100  parts. 


84 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


PERSALANE. 

Taking  up  first  the  consideration  of  the  composition  of  the  persalanes,  which 
will  be  that  of  the  dominant  salic  portion  in  the  dosalanes  and  the  salfemanes,  or  the 
subordinate  salic  portion  in  the  dofemanes,  let: 

q  =  the  molecules  of  quartz,  or  of  Si0.2  in  quartz. 

r  =  the  molecules  of  orthoclase,  or  of  K20  in  orthoclase. 

s=the  molecules  of  albite,  or  of  Na20  in  albite. 

t=the  molecules  of  anorthite,  or  of  CaO  in  anorthite  (CaO'). 

u  =  the  molecules  of  leucite,  or  of  K20  in  leucite. 

v  =  the  molecules  of  nephelite,  or  of  Na20  in  nephelite. 

To  avoid  complications,  which  seem  to  be  unnecessary  at  present,  the  minerals  of 
the  sodalite  group  are  not  considered  here. 

Then,  since  the  percentage  amount  of  each  mineral  present  is  obtained  by  multi¬ 
plying  its  molecular  weight  by  the  number  of  molecules,  we  shall  have: 

60q  =  the  percentage  of  quartz  (Q). 

556r  =  the  percentage  of  orthoclase  (or). 

524s  =  the  percentage  of  albite  (ab). 

278t  =  the  percentage  of  anorthite  (an). 

436u  =  the  percentage  of  leucite  (lc). 

284 v  =  the  percentage  of  nephelite  (ne). 

The  general  expression  for  the  persalane  class  will  be:  60q  +  556r  +  524s  +  278t  -f- 
436u  -]-  284v  =  100,  since  #  vanishes,  there  being  no  femic  component  at  the  center 
point.  In  the  subsequent  discussion  it  will  be  assumed  that  the  subclass  is  Subclass 
I,  since  rocks  belonging  to  other  subclasses  are  very  rare,  and  the  principles  here 
given  can  easily  be  applied  to  their  calculation. 

Taking  up  the  orders,  which  are  based  on  the  relations  of  quartz,  feldspar,  and 
feldspathoid,  it  will  be  remembered  that,  in  the  principles  of  calculation  which  we 
have  adopted,  quartz  and  the  lenads  (leucite  and  nephelite)  can  not  exist  together. 
Hence,  q  on  the  one  hand  and  either  u  or  v,  or  both,  on  the  other,  are  incompatible, 
and  if  one  be  present,  according  to  the  definition  of  the  order  the  other  must  vanish 
from  the  equation. 

IV e  shall  then  have  for  the  general  equations  representing  the  several  orders  of 
persalane: 

Order  1.  q  =  cc  (556r  +  524s  -j-  278t). 

Order  2.  q  =  3  (556r  -f-  524s  -f-  278t). 

Order  3.  q  =  556r  +  524s  -f-  278t, 

Order  4.  3q  =  556r  -f  524s  +  278t. 

Order  5.  556r  +  524s  +  278t  =  cc  (60q)  or  go  (436u  +  284v). 

Order  6.  556r  +  524s  +  278t  =  3  (436u  +  284 v). 

Order  7.  556r  +  524s  +  278t  =  436u  +  284v. 

Order  8.  3  (556r  -f  524s  +  278t)  =  436u  284v. 

Order  9.  436u  +  284 v  =  ao  (556r  +  524s  +  278t). 


CALCULATION  OF  CENTER  POINTS. 


85 


It  will  be  seen  that  the  equations  for  orders  1,  5,  and  9  are  equivalent  to  the 
equation  for  the  class  with  the  absent  quantities  omitted. 

In  dealing  with  the  equations  for  orders  6,  T,  8,  and  9  the  principle  adopted  by 
us  in  regard  to  leucite  and  nephelite  must  be  borne  in  mind,  namely,  that  to  K.,0'  is 
allotted  all  the  silica  possible  before  normative  albite  is  calculated,  so  that  normative 
leucite  and  albite  can  not  coexist,  the  Na20'  forming  only  nephelite  if  leucite  is 
necessarily  present.  An  example  illustrating  this  will  be  given  below. 

The  rangs  of  persalane  are  based  on  the  relations  of  the  total  alkalies  in  feldspars 

and  lenads  to  the  lime  in  anorthite,  CaO'.  The  equations  for  rang  will  therefore  be: 

Rang  1.  r  +  s  =  cot 
■Rang  2.  r  +  s  =  3t 
Rang  3.  r  +  s  =  t 
Rang  4.  3(r-(-s)  =  t 
Rang  5.  - 1  =  oo  (r  +  s) 

Here  again  it  is  seen  that  the  equations  for  rangs  1  and  5  are  coincident  with 
that  for  the  order,  and  that  consequently  for  these  no  separate  equations  are  needed. 

The  subrangs  of  persalane  are  based  on  the  relations  of  the  K20  and  Na20  in  the 
feldspars  and  lenads,  and  are: 

Rang  1.  r  =  co  s 
Rang  2.  r  =  3s 
Rang  3.  r  =  s 
Rang  4.  3r  =  s 
Rang  5.  s  =  go  r 

Equations  for  rangs  1  and  5  will  not  be  needed. 

The  above  are  the  general  expressions,  but  the  processes  may  be  somewhat  simpli¬ 
fied  in  many  cases  by  taking  advantage  of  known  relations  and  conditions,  and  a  few 
examples  are  given  in  illustration  of  the  actual  method  of  procedure.  The  use  of 
logarithms  will  be  found  very  convenient,  and  a  seven-place  table  was  used  in  calcu¬ 
lating  all  the  results  given  in  the  annexed  tables,  insuring  accuracy  in  the  last  deci¬ 
mal  and  greatly  shortening  the  time  necessary  for  the  calculations. 

The  first  illustration  may  be  the  center  point  of  toscanose ,  belonging  to  Class- 1, 
persalane;  order  4,  britannare  (quardofelie,  or  with  feldspar  dominant  over  quartz, 
i.  e.  in  ratio  3:1);  rang  2,  toscanase  (domalkalic,  or  with  alkalies  to  salic  lime  in  the 
proportion  of  3:1);  subrang  3,  toscanose  (sodipotassic,  or  potash  and  soda  in  equal 
amount).  The  equations  needed  will  be: 

60q  +  556r-f  524s +  278t  =  100  (Class) 

1 80q  =  556r  +  524s  +  278t  (Order) 

As  the  percentage  amount  of  the  normative  quartz  present  is  known  from  the 

definition  of  the  order,  these  two  may  be  conveniently  replaced  by  the  equations: 

556r  +  524s  -f  278t  =  75,  and  60q  =  25 
r  +  s  =  3t  (Rang) 

r  =  s  (Subrang) 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


8(5 


The  solution  of  these  yields  the  results: 

r  = . 059273 
s  = . 059273 
t  = .  039515 


From  which  we  calculate  the  norm  to  be: 

Quartz .  25. 00 

Orthoclase .  32.96 

Albite . 31.06 

Anorthite . .  10.  98 


100.  00 

This  g-ives  the  chemical  composition  as: 

Si02 .  72.37 

A12Os .  16. 16 

CaO .  2.22 

Na.20 .  3.68 

K20 .  5.  57 


100.  00 

Another  example  may  be  that  of  laurvikose,  in  Class  I,  persalane;  order  5,  cana- 
dare  (perfelic);  rang  2,  pulaskase  (domalkalic) ;  and  subrang  4,  laurvikose  (dosodic). 
Here,  there  being  no  normative  quartz  or  lenad,  the  equation  for  order  is  not  needed, 
and  we  shall  have: 

556r  +  524s  +  278t  =  1 00  ( Class) . 
r  +  s  =  3t  (Rang) 

3r  =  s  (Subrang) 

These  yield  on  solution: 

r  = .  040021 
s  = .  120063 
t  = .  053361 

From  which  we  derive  the  norm: 


Orthoclase .  22.  25 

Albite . 62.91 

Anorthite .  14.  84 


100. 00 

The  chemical  composition  is: 

Si02 . 64.03 

ALO:, .  21.79 

CaO .  2.  98 

Na,0 . 7.44 

K20 .  3.76 


100.  00 

As  a  final  example  wre  may  take  up  the  centerpoint  of  miaskose,  illustrating  the 
procedure  when  normative  lenad  (feldspathoid)  is  present,  but  when  we  can  not 
tell  a  priori  whether  it  is  leucite  or  nephelite  or  both.  Miaskose  belongs  in  Class  I, 
persalane,  order  6,  russare  (lendofelic,  or  with  feldspars  dominant  over  lcnads),  rang 
1,  miaskase  (peralkalic)  and  subrang  4,  miaskose  (dosodic). 


CALCULATION  OF  CENTER  POINTS. 


87 


Let  us  first  assume  that  leucite  may  be  present,  in  which  case  there  can  be  no 

albite  in  the  norm,  as  explained  above.  As  the  rang  is  peralkalic,  there  will  be 

no  equation  for  rang,  and  we  shall  have: 

556r  +  436u  +  2S4v  =  100  (Class) 

556r  =  3  (436u  +  284v)  =  1308a +  852v  .(Order) 

3r  +  3u  =  v  (Subrang) 

Substituting  for  v  in  the  equation  for  order  we  get: 

556r  =  1308u  +  2556r  +  2556u 

which  reduces  to: 

—  2003r  =  3864u 

This  equation  is  absurd,  and  we  therefore  know  that  leucite  can  not  be  present 

in  the  norm  of  miaskose.  In  its  absence  all  the  potash  must  go  into  orthoclase,  and 

the  soda  will  be  divided  up  between  albite  and  nephelite.  On  this  basis  we  shall  have: 

556r  +  524s  +  284v  =  100  (Class) 

556r  -f-  524s  =  852v  (Order) 

3r  =  s  +  v  (Subrang) 

From  these  we  derive  the  figures: 

r  =  .  056912 
s  = . 082707 
v= .  088028 

Whence  we  get  the  norm: 


Orthoclase .  31. 66 

Albite .  43.  34 

Nephelite .  25.  00 


100.  00 

And  the  chemical  composition  will  be: 

Si02 .  60.  83 

A1203 .  23.  23 

Na^jO .  10.59 

K20 .  5.35 


100.  00 

The  calculated  center  points  for  all  the  possible  subrangs  of  Subclass  I  of  persa- 
lane  are  given  in  Table  VI.  In  the  case  of  threefold  divisions,  as  in  the  subrangs  of 
docalcic  rangs,  the  subrangs  1  and  3  were  assumed  to  be  of  the  same  character  as 
subrangs  1  and  5,  where  the  division  is  fivefold.  Thus,  subrang  3  of  a  docalcic  rang 
is  assumed  to  be  persodic,  not  presodic,  and  the  small  amount  of  potash  is  neg¬ 
lected,  or  rather  assumed  to  be  absent. 

It  will  be  found  interesting  to  compare  these  with  the  analyses  of  the  persalane 
rocks  in  Part  I  of  the  collection.  It  must  be  remembered,  however,  that  the  figures 
given  in  Table  VI  are  of  the  ideal  center  points,  and  that  the  presence  of  femic  or 
alferric  minerals,  or  of  small  amounts  of  other  standard  minerals,  in  the  mode,  will 
often  cause  marked  divergences  in  the  actual  rock  analysis  from  these.  Thus,  as 
a  general  rule,  the  dark  minerals  present  will  decrease  the  amount  of  silica,  alumina, 


88 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


and  alkalies,  and  often  raise  that  of  lime.  Similarly,  a  small  amount  of  modal  quartz 
will  raise  the  actual  silica,  while  a  little  nephelite  will  decrease  it.  It  must  also  be 
remembered  that  few  of  the  rocks  are  exactly  at  the  center  point  of  their  divisions, 
even  so  far  as  the  salic  components  are  concerned,  which  will,  of  course,  cause 
more  or  less  divergence  from  the  ideal  composition. 

With  a  little  study  it  will  be  found  that  the  reasons  for  any  given  divergence  are 
quite  evident  in  most  cases  when  the  description  of  the  rock  is  sufficiently  complete. 
It  will  also  be  found  that  such  study,  supplemented  by  comparison  of  the  actual  rocks 
with  their  ideal  center  points,  gives  one  a  much  clearer  insight  into  the  mutual 
chemical  relations  of  the  rock-forming  minerals  than  is  easily  obtained  otherwise. 

PERFEMANE. 

When  the  calculation  of  the  center  points  of  the  perfemanes  is  undertaken,  it  is 
immediately  seen  that  the  subject  is  much  more  complex  than  that  of  the  persalanes, 
though  the  same  principles  apply  in  both  cases. 

In  the  first  place  there  are  a  greater  number  of  successive  pairs  of  factors,  owing 
to  the  greater  complexity  in  chemical  composition  of  the  rocks  belonging  to  this 
class.  Thus,  in  the  persalanes  we  have  to  deal,  in  most  cases,  with  only  four 
hierarchical  divisions,  namely,  class,  order,  rang,  and  sub  rang.  In  the  perfemines, 
on  the  other  hand,  we  must  consider  at  least  six,  class,  order,  section  of  order, 
rang,  section  of  rang,  and  subrang,  with  possibly  suborder,  section  of  suborder,  and 
section  of  subrang,  or  some  such  division  to  express  the  relations  of  magnetite  and 
ilinenite,  or  of  Fe203  and  Ti02  (in  all  orders  except  the  first),  which  must  be  considered 
in  the  calculation. 

In  the  perfemanes  also  several  of  the  chemical  constituents  are  distributed 
between  various  mineral  groups  or  subgroups,  more  often  than  is  the  case  in  the 
persalanes.  Thus  CaO  may  occur  as  metasilicate  in  diopside  and  wollastonite,  a> 
subsilicate  in  akermanite,  and  also  in  apatite  and  fiuorite.  MgO  and  FeO  are  found 
in  the  metasilicates,  diopside,  and  hypersthene,  and  in  the  orthosilicate  olivine,  while 
FeO  also  occurs  in  the  mitic  minerals,  magnetite,  and  ilmenite.  Fe203  is  found  both 
in  acmite  and  magnetite,  and  Na20"  in  acmite  and  in  Na2Si03. 

A  further  feature  which  adds  somewhat  to  the  complexity  is  the  fact  that  among 
the  femic  minerals,  notwithstanding  their  greater  number,  there  are  few  cases  of 
antithesis  between  minerals;  that  is,  pairs  of  minerals  which,  from  the  principles  on 
which  the  calculation  of  the  norm  is  founded,  can  not  coexist  in  the  norm.  In  the 
persalanes  quartz  and  the  lenads  are  mutually  antithetical,  but  in  the  perfemanes 
representatives  of  the  pyric,  olic,  and  mitic  subgroups  can  all  exist  simultaneously, 
as,  for  instance,  diopside,  hypersthene,  olivine,  magnetite,  and  ilmenite.  The  only 
case  of  antithesis  of  any  practical  importance  in  the  perfemanes  is  that  of  hypers¬ 
thene  and  akermanite,  though,  according  to  the  methods  already  published  by  us, 
akermanite  can  coexist  with  the  hypersthene  included  in  the  diopside  molecule. 


CALCULATION  OF  CENTER  POINTS. 


80 


If  the  mixed  molecule  of  diopside,  CaO.  (Mg,Fe)0.  2SiOa,  be  considered  in 
calculating  the  perfemane  center  points,  the  matter  becomes  venr  complex  in  many 
cases,  since  there  are  numerous  possibilities  as  to  the  mutual  relations  of  this  molecule, 
and  those  of  olivine  and  akermanite.  For  purposes  of  simplification,  therefore,  I 
have,  in  the  subsequent  calculations,  disregarded  this  molecule,  that  is,  have  con¬ 
sidered  CaSi03,  MgSiOs,  and  FeSi03  as  being  independent  of  each  other.  This  point 
will  probably  be  discussed  in  a  future  publication. 

These  various  complications  introduce  an  increased  number  of  equations  to  be 
solved,  and  therefore  add  much  to  the  labor  of  calculating  the  center  points  of  the 
perfemanes,  though,  as  has  been  said  above,  no  change  in  the  principles  from  those 
obtaining  in  the  persalanes  is  involved. 

After  the  explanations  which  have  been  given  for  the  persalanes  it  will  be 
unnecessary  to  give  here  the  general  equations,  especially  in  view  of  their  increased 
number.  It  will  suffice  to  give  a  few  examples  illustrative  of  the  various  points  to 
be  considered. 

Before  entering  upon  these  one  important  point  must  be  mentioned  in  which 
the  calculation  of  the  perfemanes  differs  from  that  of  the  persalanes.  It  will  be 
remembered  that  in  the  latter  K20  is  assumed  to  have  a  greater  affinity  for  Si02 
than  has  Na20,  and  that  consequently,  while  the  former  can  occur  both  in  orthoclase 
and  leucite  and  the  latter  both  in  albite  and  nephelite,  leucite  is  formed  in  preference 
to  albite  if  the  amount  of  Si02  is  insufficient  to  yrield  only  polysilicate  with  the  two 
alkalies.  In  the  constituents  of  the  femic  minerals,  on  the  other  hand,  there  is  no 
such  marked  difference  in  affinity  for  Si02  between  MgO  and  FeO,  so  that  these  two 
oxides  are  distributed  in  equal  ratios  between  diopside,  hypersthene,  and  olivine  (if 
all  are  present),  after  FeO  has  been  allotted  to  magnetite  and  ilmenite. 

It  must  furthermore  be  borne  in  mind  that,  while  among  the  salic  minerals  the 
number  of  mineral  molecules  is  the  same  as  that  of  the  unit  oxide,  in  the  femic 
minerals  there  are  several  important  cases  where  this  does  not  apply.  Thus  the 
number  of  molecules  of  orthoclase  or  of  leucite  is  the  same  as  that  of  the  K20 
in  each,  but  in  olivine  the  number  of  molecules  of  (Mg,Fe)0  is  twice,  and  in 
akermanite  that  of  CaO  is  four  times,  that  of  the  respective  mineral  molecules. 

In  the  calculations  of  the  perfemane  center  points  I  have  adopted  the  following 
symbols: 


a  =  mol.  of  CaSi03. 
b  =  mol.  of  MgSi03. 
c  =  mol.  of  FeSi03. 
d  =  mol.  of  Mg2Si04. 
e  =  mol.  of  Fe2Si04. 
f  =  mol.  of  FeO.  Fe203. 
g  =  mol.  of  FeO.  Ti02. 
h  =  mol.  of  4CaO.  3Si02. 
k  =  mol.  of  Na20.  Fe203.  4Si02. 


a  =  molecules  of  CaO  in  wollastonite. 
b  =  molecules  of  MgO  in  enstatite. 
c  =  molecules  of  FeO  in  ferrosilite. 

2d  =  molecules  of  MgO  in  forsterite. 

2e  =  molecules  of  FeO  in  fayalite. 
f  =  molecules  of  FeO  and  of  Fe203  in  magnetite.- 
g  =  molecules  of  FeO  and  of  Ti02  in  ilmenite. 

4h  =  molecules  of  CaO  in  akermanite. 
k  =  molecules  of  Na.20  and  of  Fe203  in  acmite. 


90 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


We  shall  then  have: 

116a  =  per  cent  of  wollastonite  (wo). 

100b  =  per  cent  of  enstatite  (en). 

132c  =  per  cent  of  ferrosilite  a  (fs). 

140d  =  per  cent  of  forsterite  (fo). 

204e  =  per  cent  of  fayalite  (fa). 

232f  =  per  cent  of  magnetite  (mt). 

152g  =  per  cent  of  ilmenite  (il) . 

404h  =  per  cent  of  akermanite  (am). 

436k  =  per  cent  of  acmite  (ac). 

Let  us  take  as  the  first  illustration  Class  V,  order  1,  section  of  order  2,  rang  1, 
section  of  rang  2,  subrang  3.  This  is  perfemic,  perpolic,  dopyric,  permirlic, 
domiric,  and  magnesiferrous.  We  have  as  equations  expressing  these  relations,  and 
the  equal  relations  of  MgO  and  FeO  in  the  hypersthene  and  olivine,  the  following: 

(1)  116a  +  100b  +  132c +  140d  +  204e  =  100  (Class). 

(2)  116a  +  100b  +  132c  =  3  (140d  +  204e)  (Section  of  order). 


This  may  be  conveniently  written: 


(3)  1 1 6a  +  100b  -f-  132c  =  75,  and 

(4)  140d  4-  204e  =  25 

(5)  3a  =  b  +  c-f  2d  +  2e 

(6)  b  =  c,  and  \ 

(7)  d  =  e  J 


(Section  of  rang). 
(Subrang) . 


Analogously  with  similar  cases  in  the  persalanes,  as  already  explained,  no  equa¬ 
tions  are  necessary  to  express  the  order  or  rang. 


Substituting  (5)  in  (3)  we  obtain: 


116b  A  116b  232d  -{-  232e  >  ,  ,  ooi  v. 

■ - - - - — - +  100b  +  132b  =  (5,  whence 

928b  =  225  -  232d  -  232e. 


From  (4)  and  (7)  we  get  344d  =  344e  =  25. 

Solving  these  we  obtain  for  the  values  of  a,  b,  etc. : 

a  =  .23431 
b  =  .20612 
c  =  .  20612 
d  =  .  072675 
e  =  .072675 

whence  we  obtain  the  norm: 

Wollastonite..  27.18 

Enstatite . 20.  61 

Ferrosilite _ 27.  21 

Forsterite . 10. 17 

Fayalite .  14.  83 

100.  00 


«  As  it  was  found  to  be  necessary  to  have  some  name  for  the  purely  ferrous  hypersthene  molecule,  FeSi03,  which 
has  not  yet  been  observed  in  nature,  and  for  which  there  is  no  term  in  use,  I  have  employed  the  name  ferrosilite  for 
this,  following  a  suggestion  made  by  Professor  hidings. 


CALCULATION  OF  CENTER  POINTS. 


91 


From  this  the  chemical  composition  is  calculated  to  be: 

SiO,  ...  47.52 
FeO  ...  25.31 
MgO . . .  14.05 
CaO  ...  13.12 


100.  00 


Another  example  is  given,  introducing  magnetite  and  ilmenite.  This  may  be 
Class  V,  order  2,  section  of  order  3,  rang  1,  section  of  rang  2,  subrang  2,  and  what 
may  be  called  section  of  subrang  2,  in  which  hematite  :  ilmenite  =  3  : 1.  We  shall 
have  for  this  center  point  the  following  equations: 


( 1 )  1 16a  4-  100b  +  132c  +  140d  -f  204e  -j-  232f  -f  152g  =  100 

(2)  116a  +  100b  +  132c  +  140d  +  204e  =  75  and  1 

(3)  232f  +  152g  =  25  / 

(4)  116a -f  100b  -f  132c  =  37.50  and  1 

(5)  140d+204e  =37.50  J 

(6)  3a  =  b  +  c  +  2d  +  2e  +  f  +  g 

(7)  b  =  3c  and  \ 

(8)  d  =  3e  J 

(9)  232f  =  456g 


(Class) 

(Order) 

(Section  of  order) 
(Section  of  rang) 
(Subrang) 

(Section  of  subrang) 


From  (3)  and  (9)  we  obtain  the  values  of  f  and  g,  and  from  (5)  and  (8)  the  values 
of  d  and  e.  Substituting  (6)  in  (1)  we  get: 


1 16b  + 1 16c  +  232d  +  232e  + 1 16f  + 1 16g 
3 


100b  +  132c  +  140d  +  204e  +  232f  +  152g  =  100 


This  reduces  to: 


1760c  =  300-  652d  -  844e  -  812f-572g  =  42.60, 
and  so  we  obtain  the  values: 

a  =  .23319 
b  =  .  07263 
c  = .02421 
d  =  .  18030 
e  =  .06010 
f  =.08082 
g  =  .04112 


These  yield  the  norm: 

Wollastonite . .  27.  04 

Enstatite .  7.  26 

Ferrosilite _  3.  20 

Fosterite . 25. 24 

Fayalite .  12.26 

.  Magnetite _ 18.  75 

Ilmenite .  6.25 


100. 00 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


92 

which  give  the  chemical  composition  of  this  center  point  as: 

Si02  ...  34.  23 
Fe203  . .  12.  93 
FeO  ...  19. 17 
MgO...  17.32 
CaO  ...  13.  06 
Ti02  ...  3.  29 

100.  00 

Similar  equations  may  be  formed  for  the  various  rangs  which  contain  acmite, 
etc.,  but  it  is  scarcely  worth  while  to  give  illustrations  of  them  here. 

In  Table  VII  are  given  the  calculated  center  points  of  order  1  of  perfemane,  the 
only  rang  represented  being  rang  1 — that  is,  rocks  with  neither  normative  magne¬ 
tite  nor  ilmenite  nor  with  acmite.  This  incompleteness  is  regretted,  but  the  very 
large  number  of  equations  to  be  solved,  and  of  percentages  of  minerals  and  chemical 
constituents  to  be  determined,  rendered  a  complete  exposition  of  this  class  quite  out 
of  the  question  with  the  time  at  my  disposal.  It  is  hoped  that  at  some  not  far  distant 
date  complete  tables  will  be  made  both  of  the  other  orders  and  rangs  of  perfemane 
and  of  the  corundum-  and  zircon-bearing  subclasses  in  persalane. 

In  combining  the  data  of  Tables  VI  and  VII,  to  obtain  the  composition  of  any 
given  center  point  for  grads  and  subgrads  in  Classes  II,  III,  or  IV,  the  mutually 
antithetical  character  of  various  salic  and  femic  minerals,  based  on  the  methods  of 
calculation  of  the  norm  which  we  have  adopted,  and  which  preclude  their  coexistence, 
must  be  borne  in  mind.  Thus,  in  Classes  II  and  III,  no  grad  characterized  b}r  the 
presence  of  olivine  is  possible  when  the  salic  portion  contains  quartz;  none  with 
hypersthene  when  nephelite  or  leucite  is  present;  none  containing  diopside,  wollaston- 
ite,  or  acmite  when  corundum  is  present;  none  with  acmite  when  anorthite  exists; 
nor  one  with  akermanite  when  feldspar  occurs  in  the  salic  portion.  The  converse 
relations  hold  good  in  Class  IV. 


Table  VI.—  CALCULATED  CENTER  POINTS  OF  CLASS  I,  PERSALANE. 


CENTER  POINTS. 


93 


CO  |rH 

II 


T-i  [O 

II 

cylfe 


53 

a 

o 

Q 


*o 

Is 


O 

G 


cS 

M 


Ph 


bo 

a3 


8 


iC  iO  ’J'  iC 


S  8  S 

CO  CO  CO 


8 

iC 


be 

- 


•2 

0Q 


fc-  -Q  C 

O  <  < 


~  — i 

OJ  lO  o 

CO  CO 


X  CO  o  o 


t'-  t-  CO 


(M 

.75.00 

11.00 

10.35 

3.65 

90. 77 

5.38 

0.74 

1.25 

1.86 

rH 

75.00 

21.43 

3.57 

90. 42 

5.24 

0. 72 

3. 62 

CO 

75.00 

25.00 

93. 17 

4.87 

96  T 

OJ 

75.00 

12.87 

12. 13 

91.70 

4.72 

1.44 

2.14 

CO 


«  O 

53 


O 

53  ^ 

<  a 


£  us 


0> 

'O 


5.  Percalcic. 

rH 

50.00 

50.00 

71.58 

18.35 

10. 07 

4.  Docalcic. 

CO 

50.00 

19. 29 

30. 71 

76.50 

15.03 

6.19 

2. 28 

50.00 

10. 12 

9.53 

30.35 

76. 15 

14.90 

6.11 

1.13 

1.71 

rH 

50.00 

20.00 

30.00 

75. 76 

14. 87 

6.01 

3.36 

3.  Alkalicalcic. 

iC 

50.00 

32. 67 

17.33 

79.93 

12.72 

3. 49 

3.86 

50.00 

8. 59 

24. 25 

17.16 

79. 63 

12.60 

3.45 

2. 87 

1.45 

CO 

50.00 

16.99 

16. 02 

16.99 

79.33 

12.48 

3. 42 

1.90 

2. 87 

50.00 

25. 24 

7.93 

16.83 

79.05 

12.35 

3.39' 

0.94 

4.27 

rH 

50.00 

33.33 

16.67 

78. 78 

12.23 

3.35 

5.64 

G 

<M* 

© 

50.00 

42.49 

7.51 

82. 43 

11.03 

1. 51 

5.03 

50.00 

11.13 

31.45 

7.42 

82. 01 

10.90 

1.49 

3. 72 

1.88 

CO 

50.00 

21. 97 

20. 71 

7.32 

81.58 

10. 77 

1.48 

2.45 

3.'72 

oi 

50.00 

32. 55 

10.22 

7. 23 

81.21 

10. 62 

1.46 

1.41 

5.50 

- 

50.00 

42. 86 

7.14 

80.83 

10. 48 

1.44 

7.25 

1.  Peralkalic. 

1C 

50. 00 

50.00 

84.35 

9. 73 

5.92 

©  ©  •  rH  ©  •  V-  rH 

©  ©  ©  •  00  UO  •  CO  <M 

©  CO  ©  •  co  oi  ■  oi 

lO  rH  CO  X 

CO 

50.00 

25. 74 

24.26 

83.32 

9. 44 

2.87 

4. 17 

50.00 

38.05 

11.95 

82. 85 

9. 31 

1.41 

6. 43 

- 

50.00 

50.00 

82. 37 

9. 18 

8.45 

Rang . 

Subrang . 

Q . 

Or . 

Ab . 

An . . 

SiO. . 

AM)3 . 

CaO . 

Na..O . 

K20 . 

Table  VI.— CALCULATED  CENTER  POINTS  OF  CLASS  I,  PERSALANE— Continued. 


94 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


aS 

c3 

a 

o 

A 


X 

05 

© 


m  x  m  © 


15 

t- 

o> 

0, 


bo 


5.  Percalcic, 

rH 

25.00 

 . 

75.00 

57. 37 

27.53 

15. 10 

l 

0 

CO 

co 

X 

04 

0 

O' 

O 

id 

X 

CO 

id 

X 

04 

d 

cd 

04 

04 

co 

04 

O 

O 

O 

X 

c 

04 

05 

05 

c 

CO 

O 

CO  i/5 

04 

04 

1- 

04 

d 

i-0 

id 

04 

05 

04 

a 

04 

-T< 

CO 

04 

0 

c 

0 

CO 

1- 

0 

0 

X 

0 

O 

c 

rH 

id 

e 

id 

x 

04 

d 

id 

04 

CO 

04 

O 

0 

05 

X 

X 

c 

O 

0 

X 

0 

04 

X 

1/5 

id 

os  d 

d 

05 

id 

id 

CJ 

hj 

04 

CO 

0 

r- 

iO 

05 

X 

p> 

0 

X  X  l> 

•?r 

X 

rH 

X  T— 

id 

04  d  id 

oi 

X 

id 

04 

04 

X  04 

CO 

rH 

O 

cfl 

05  04  05 

Q 

Tj« 

O 

O 

T 

c 

-*f 

0 

I" 

rH 

X  X 

CO 

in 

id 

05 

X 

id 

04*  -T 

04 

04  04 

04 

O 

CO 

c 

'T 

X 

X 

X 

C 

® 

X  05  04 

IC 

10 

0 

~7 

•^r 

iC 

I'* 

r- 

10 

X 

X 

iO 

co 

04 

X  r- 

04 

co 

O 

O 

O 

lO 

in 

O 

O 

X 

0 

T 

id 

c 

id 

X 

X 

id 

X* 

04 

iC 

04 

CO 

O 

X  1^ 

in 

1/5 

in 

O 

04 

CO 

1/5 

04 

iC 

iO 

id 

CO  rH 

cd 

d 

04 

p- 

04 

CO  — < 

p» 

rH 

© 

O' 

O' 

04 

04 

HT< 

O 

X  04 

O 

Cl. 

rH 

O 

X 

04 

i/5  X 

id 

CO 

,_3 

cd 

d 

04" 

id  04* 

6 

04 

rH 

CO 
04  d 


iC  N  50 
W  P  H 

h  ic  d 


in 

25. 00 

76.00 

76.53 

14.60 

. 

8. 87 

c 

c 

c 

X  05 

CO  04 

c 

CO  rj 

I-  X 

i/5  X 

lO  05  1/5 

id  Tf 

d  cd 

04  r- 

IT 

I-  rH 

05 

X  «c 

04  CO 

CO  X 

0 

rH 

x  m 

X 

X 

d 

Tf 

d 

04  X  X 

P-  rH 

c 

p> 

X 

P-  c 

c 

c 

05 

04  05 

CO 

04 

in  p> 

1^ 

Tf  X* 

04  d 

P-  rH 

c 

c 

CO 

P» 

CO 

in 

id 

cd  cd 

04* 

Os 

i> 

he 

■ 

r- 

. 

. 

eo 

Al 

an 


of 

44 


*4  ,Q 


^  c  w  „  w 

2  rS*  ci  08  'w 

m  <  O  52;  W 


be 

c 


bp 

5 

t. 

6 

Xti 


V 

*8 

*3 

0> 

id 

- 

8 

O* 

O 

CO 

cd 

Hr 

36. 70 

d 

04 

co 

38.59 

61.41 

04 

O 

cd 

in 

30.04 

12. 37 

4.57 

rt 

O 

0 

05 

04 

I" 

04 

04  C 

I- 

04 

04  -* 

04 

C 

05  O 

0  i 

04  X 

Q 

IN  r- 

w 

m 

04 

O 

04 

-r 

04 

04 

O 

m 

i- 

O 

P- 

n 

c 

d 

d 

04 

CC 

-r 

CO 

in 

04 

rH 

Hf  CO 

m 

X 

X 

CO 

X 

05 

P- 

m 

id 

d 

id 

co  X 

in 

04 

X 

04  04 

05 

c 

in  x 

04 

05 

P' 

05 

rp 

p* 

cd  ^ 

d 

»d 

d 

id  04* 

ci 

X 

in 

04 

cd 

O' 

04  05 

CO 

X 

LO 

05  ^ 

05  c 

05 

CO 

05 

X 

P' 

I" 

X  04*  X 

00 

d 

cd  id 

XXX 

in 

04 

*< 

p> 

CO  co 

O 

X 

X  X 

cd 

X  CO 

rH 

i> 

x  m 

04 

0  id  x 

X 

co 

X 

X 

m 

04 

p> 

X 

CO 

p- 

CO 

X 

0 

04 

rH 

d 

cd 

TT 

d 

X 

m 

04 

X 

X 

04 

05  O 

X 

O 

O 

0 

m 

Hf 

m 

Tf<* 

04 

cd 

0 

X  rH 

co 

04 

r- 

in  r 

X 

05 

X 

-r 

04 

05  X 

0 

05 

i» 

04 

04  Tj< 

04 

04 

CO  rH 

CO 

04 

cd 

r-H 

in 

CO 

CO 

X 

CO 

in 

06 

05  -f 

X 

X 

Tf 

cd 

yj, 

04 

S 

rr 

-T 

rH 

CO 

04 

0 

05  Hf 

P- 

X 

X 

04 

04* 

0 

Tj<  TJ* 

-cr 

04 

05 

c 

04 

in 

O 

04 

04 

CO  04  rH 

CO 

04 

1— 

rH 

05 

X 

P- 

04 

CO 

05 

X 

id 

yj, 

d 

04 

X 

rH 

04 

in 

100.00 

68. 70 

19. 47 

11.83 

.  .  t . 

26. 13 

73.87 

8  g 

1^  d 

8. 74 

4.42 

X  04 

04  05 

^  in. 

'f  in 

CO  X 

i^*  p- 

X 

H  X 

d  cc 

id  cd 

in  hp 

CO  rH 

CO  Q 

0  — 

x  co 

X  05 

Pr  CO 

X  X 

04 

d  cd 

id  x* 

04*  04 

04 

CO  r-t 

rH 

O  • 

in  in 

*  Q 

O 

P*  x 

•  05 

d  • 

TJ4  CO 

.  d 

t\  ^ 


u  &  C 

o  <  < 


O  _*•  ^  a*' 

33  «<  3  fc  « 


Table  VI.— CALCULATED  CENTER  POINTS  OF  CLASS  I  PERSALANE— Continued. 


CENTER  POINTS. 


9 


H  CO 

II 

J  * 


05 

p 

X 

ro 

CO 

CD 

CO 

o 

d* 

05 

iD 

© 

TT 

ir 

cd 

CD 

iD 

c 

rr 

CO 

d 

a> _ 

I- 

CO 

CD 

CM 

iD 

fp 

rr 

eg 

c 

05 

04 

I- 

05 

X 

lC 

X 

Cl 

ed 

00 

CO 

id 

cd 

cd 

cm  cd 

CO 

W 

rr 

1^ 

CO 

o 

X 

00 

rH 1 

o 

HT 

CO 

05 

CM 

rH 

a 

rr 

id 

^4 

- 

• 

CD 

Cl 

rr 

CO 

rH 

05 

p 

iO 

Cl 

o 

05 

o 

CO 

X 

rf 

CO 

ID 

CO 

rH 

id  h 

© 

00 

05 

rr 

CM  iO 

CO 

05  hT 

V- 

© 

CD 

iD 

c 

CD 

iD 

CO 

O' 

i D 

c 

ci 

rH 

id  © 

CM  iD 

© 

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Table  VI.—  CALCULATED  CENTER  POINTS  OF  CLASS  I,  PERSALANE— Continued. 


96 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


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Table  VI I.— CALCULATED  CENTER-POINTS  OF  CLASS  V,  PERFEMANE.  ORDER  1 


CENTER  POINTS. 


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Table  VI I.—  CALCULATED  CENTER- POINTS  OF  CLASS  V,  PERFEMANE— Continued. 


98 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


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Table  VII.— CALCULATED  CENTER-POINTS  OF  CLASS  V,  PERFEMANE— Continued. 


CENTER  POINTS 


99 


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100 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


TIIE  DISTRIBUTION  OF  MAGMAS  AND  THE  AVERAGE  ROCK. 

INTRODUCTORY. 

The  large  number  of  analyses  given  in  this  collection  affords  such  a  broad  view 
of  igneous  rocks  that  it  will  be  interesting  to  examine  the  quantitative  distribution 
of  the  mao-mas  of  various  characters.  To  a  certain  extent  this  distribution  is  a  mat- 
ter  of  common  knowledge;  but  based  as  this  is  on  analyses  arranged  according  to 
older,  less  precise,  and  more  qualitative  classifications,  it  lacks  the  definiteness  of  that 
which  may  be  obtained  from  a  study  of  analyses  classified  quantitatively  according  to 
their  chemico-mineralogical  characters. 

In  view  of  the  fact  that  most  of  the  inferior  analyses  of  rocks  are  not  classified 
according  to  the  new  system,  all  analyses  of  these  two  lowest  ratings  will  be  neglected, 
even  if  found  in  Part  I  of  the  collection,  and  the  examination  will  be  confined  entirely 
to  the  superior  analyses  of  the  first  three  ratings — i.  e.,  excellent,  good,  and  fair — 
present  in  Part  I. 

In  the  statement  of  the  magmatic  divisions  presented  in  Table  I  there  is  given 
with  each  division  the  number  of  analyses  of  the  first  three  ratings  found  in  Part  1 
of  the  collection.  These  amount  in  all  to  1,711,  or  59.39  per  cent  of  the  total  number 
of  analyses  (2,881)  which  are  given  in  both  parts.  The  distribution  of  ratings  has 
been  discussed  elsewhere. 

As  a  preliminary  to  the  discussion  it  must  be  remarked  that  any  generalizations 
from  these  figures  are  liable  to  the  error  common  to  all  statistical  methods,  namely, 
the  uncertainty  that  the  data  truly  represent  the  exact  state  of  affairs.  In  this 
instance,  for  example,  it  may  be  that  there  is  an  undue  proportion  of  analyses  of 
common  rocks,  granites,  diorites,  andesites,  etc.,  since  these  rocks  have  been  most 
frequently  studied,  and  hence  probably  analyzed  relatively  more  often  than  rarer 
ones.  But,  on  the  other  hand,  the  present  interest  in  unusual  types  may  render  the 
analyses  of  some  of  these,  as,  for  instance,  the  nephelite-bearing  rocks,  more  abundant 
relatively  to  the  common  ones  than  is  actually  true  in  nature.  As  an  example  of  the 
first  error  it  may  be  mentioned  that  not  a  single  analysis  is  to  be  found  of  rocks 
belonging  to  the  order  victorare  (purely  siliceous  rocks,  such  as  igneous  quartz  veins), 
though  the  researches  of  Howitt  and  others  show  that  these  undoubtedly  exist.  On 
the  other  hand,  a  recent  paper  on  the  igneous  rocks  of  the  Black  Hills  contains  19 
analyses  of  the  phonolites  and  tinguaites,  and  only  four  of  the  quantitatively  far 
more  abundant  quartz-porphyries,  dacites,  etc.  This  is  not  intended  as  a  criticism 
of  the  paper  referred  to,  but  simply  as  an  illustration  of  the  natural  tendency  to 
pay  especial  attention  to  the  more  interesting  rock  types. 

A  further  source  of  possible  error  is  to  be  found  in  the  fact,  which  seems  to  be 
established  by  general  experience,  that  the  granites  (using  this  as  a  field  term,  as 
proposed  by  Cross,  Iddings,  Pirsson,  and  Washington)  occur  as  a  general  thing  in 


DISCUSSION  OF  STATISTICAL  DATA. 


101 


masses  of  greater  volume  than  the  syenites,  gabbros,  and  nephelite-syenites,  though 
this  is,  to  a  certain  extent,  compensated  for  by  the  relatively  greater  abundance  of 
the  melaphyres  (basalts  and  diabases)  over  the  leucophyres  (rhyolites  and  trachytes). 
At  present  there  are  no  data  available  which  permit  any  estimate  of  the  quantitative 
relations  of  the  volumes  of  the  various  kinds  of  igneous  rocks,  such  as  has  been  made 
for  the  thicknesses  of  the  stratified  rocks  as  a  basis  for  estimating  the.  geological 
time  scale. 

It  must  also  be  remembered  that  the  more  femic  rocks  are  much  more  prone  to 
weathering  and  decomposition  than  the  more  salic  ones.  Thus  it  is  comparatively 
seldom  that  we  find  satisfactorily  fresh  occurrences  of  the  peridotites  or  pyroxenites, 
the  former  especially  being  usually  profoundly  altered.  Since  analyses  of  altered 
rocks  are  not  available  for  the  purpose  in  view,  many  anatyses  of  these  rocks  have 
been  excluded  from  consideration,  and  this  will  of  course  affect  the  representative 
character  of  the  data  to  a  certain  but  indeterminable  extent. 

To  what  extent  these  sources  of  error  balance  one  another  it  is  impossible  to 
say,  though  1  am  inclined  to  the  view  that  the  rarer  types  are  more  abundantly 
represented  than  is  warranted  by  their  amount  in  comparison  with  that  of  the  more 
common  rock  types. 

In  any  case  the  reliability  of  the  statistical  method  increases  with  the  number  of 
the  available  data,  and  the  large  number  of  analyses  here  given  would  seem  to  justify 
us  in  the  assumption  that  errors  due  to  these  causes  may  be  neglected.  At  any  rate, 
in  the  absence  of  any  means  of  making  appropriate  corrections,  we  must  assume  that 
this  is  true,  and  accept  the  results  subject  to  future  corrections. 

The  objection  may  also  be  raised  that  another  source  of  error  lies  in  the  rejection 
of  many  analyses  on  account  of  their  poor  ratings  or  the  decomposed  condition  of  the 
rock  analyzed.  This  will  affect  especially  the  more  femic  rocks,  where  above  all  the 
iron  oxides,  which  are  especially  subject  to  alteration  by  the  weather,  are  liable 
not  to  be  separately  determined.  That  the  rejection  of  these  analyses  will  affect  the 
result  to  some  extent  is  undeniable,  but  a  factor  in  statistical  methods  of  even  greater 
importance  than  the  number  of  data  is  their  quality.  On  this  account  the  rejection 
of  untrustworthy  analyses,  or  of  those  which  manifestly  do  not  represent  the  original 
rock  composition,  is  thoroughly  justified.  It  must  also  be  remembered  that  many 
analyses  of  salic*  rocks,  as  well  as  of  the  more  femic  ones,  are  rejected  on  account  of 
the  nonseparation  of  the  iron  oxides,  etc.,  so  that  the  discrepancy  will  not  be  so  great 
as  might  at  first  sight  be  thought. 

It  is  evident,  however,  that  we  may  have  a  twofold  object  in  view.  W e  may 
study  the  relative  quantitative  distribution  of  the  different  constituents  in  the 
various  magmas  represented  by  the  analyses,  thereby  gaining  some  insight  into 
their  relationships  and  connections,  or  we  may  use  the  same  data  in  order  to  arrive 
at  a  knowledge  of  the  average  composition  of  igneous  rocks.  The  former  problem 
may  be  taken  up  first  and  discussed  in  a  general  wav. 


102 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


THE  DISTRIBUTION  OF  MAGMAS. 

Since  the  system  of  classification  on  which  the  analyses  are  arranged  discrimi¬ 
nates  first  on  the  basis  of  the  broadest  mineralogical  features,  then  on  the  narrower, 
and  finally  on  the  chief  chemical  characters  of  the  preponderant  minerals,  it  will  be 
as  well  to  examine  the  superior  analyses  in  Part  I  as  to  these  successive  points. 

Taking  up  first  the  classes,  which  are  based  on  the  relative  amounts  of  salic  and 
femic  minerals,  they  may  be  summarized  thus: 


Class. 

Analyses. 

Per  cent. 

I.  Persalane . 

652 

38.11 

II.  Dosalane . 

676 

39.  50 

III.  Salfemane . 

304 

17.  77 

IV.  Dofemane . 

63 

3. 68 

V.  Perfemane . 

16 

0.  94 

1,711 

100.  00 

Here  the  great  preponderance  of  the  salic  classes  is  most  noticeable,  to  the  first 
two  (I  and  II)  belonging  77.6  and  to  the  first  three  (I,  II,  and  III)  95.4  per  cent  of  the 
igneous  rocks  of  the  globe,  while  only  4.6  per  cent  belong  to  the  most  femic  classes, 
IV  and  V.  In  other  words,  assuming  that  the  average  composition  of  a  division  is 
that  of  its  center  point,  quartz,  the  feldspars,  and  the  lenads  (feldspathoids)  make 
up  normatively  77.5  per  cent  of  all  the  igneous  rocks  of  the  globe.  The  average 
rock,  therefore,  will  have  the  general  character  of  a  dosalane — a  point  which  will  be 
discussed  later.  This,  of  course,  is  quite  in  line  with  the  general  but  rather  vague 
knowledge  that  quartz  and  the  feldspars  are  more  abundant  than  the  dark  minerals. 

For  the  next  steps  we  may  confine  ourselves  for  the  present  to  the  first  three 
classes — that  is,  to  over  95  per  cent  of  the  known  igneous  rocks — and  discuss  the 
more  femic  classes  later.  For  the  figures  tabulated  in  detail  reference  may  be  made 
to  the  tables  on  pages  110-112. 

In  the  first  place,  it  is  seen  that  the  orders,  which  are  based  on  the  relative 
amounts  of  quartz,  feldspars,  and  lenads,  vary  very  much  in  size.  A  few  are  large, 
columbare  with  125  analyses,  brittannare  with  378,  austrare  with  241,  germanare 
with  330,  and  gallare  with  199.  In  the  first  of  these  quartz  and  the  feldspars  are 
equal;  in  the  next  two  feldspar  is  dominant  over  quartz,  while  in  the  last  two  the 
feldspars  are  extreme  over  quartz  or  lenads.  A  few  orders  are  moderate  in  size,  as 
canadare  with  89  analyses,  russare  with  45,  norgare  with  63,  and  portugare  with  56. 
With  the  exception  of  canadare,  which  is  perfelic,  these  have  feldspar  dominant  over 
lenad  (feldspathoid).  The  others  are  represented  each  by  only  a  score  or  less  of 


GENERAL  CHARACTER  OF  CLASSES  I,  II,  AND  III. 


103 


analyses,  and,  with  the  exception  of  vaalare,  are  very  rich  in  either  quartz  or  lenads. 
By  far  the  most  numerous  are  the  rocks  of  the  quardofelic  and  the  perfelic  orders, 
which  are  represented  by,  respectively,  630  and  618  analyses  (38.6  and  37.9  percent). 
The  quarfelic  and  the  lendofelic  orders  come  next,  some  distance  behind,  with  112 
and  164  analyses,  respectively  (8.7  and  10  per  cent),  while  the  others  make  up  the 
balance,  less  than  5  per  cent  of  the  total  number  of  analyses. 

Taking  up  for  a  moment  the  distribution  of  the  orders  in  the  various  classes,  it 
will  be  found  that  the  persalanes  are  very  largely  quartz- bearing,  the  quaric  orders 
(1  to  1)  constituting  79  per  cent  of  this  class.  In  the  dosalane  class  the  quaric  and 
the  perfelic  orders  are  almost  equally  abundant,  being,  respectively,  37.9  and  48.8  per 
cent,  while  in  the  salfemane  class  the  quaric  orders  are  almost  unrepresented,  but  the 
perfelic  form  65.5  and  the  lenic  30.3  per  cent. 

There  is  thus  seen  to  be,  as  was  to  be  expected,  a  progressive  decrease  in  free 
silica,  i.  e.,  amount  of  quartz,  as  the  amount  of  dark  minerals  increases.  The  average 
composition  of  the  salic  component  of  igneous  rocks  would  then  be  that  of  a  mixture 
of  quartz  and  feldspar,  the  latter  dominant  or  extreme  over  the  former.  It  is  of 
interest  to  note  in  this  connection,  though  the  bearing  can  not  be  enlarged  on  here, 
Teall’s  suggestiona  that  quartz  and  feldspar  form  a  eutectic  mixture  of  definite 
composition  (dependent  naturally  on  the  alkalies  present)  which  forms  the  last 
product  of  solidification  in  many  rocks. 

Taking  up  the  rangs,  which  are  based  on  the  relative  amounts  of  salic  alkalies 
and  lime,  it  is  seen  that  they  also  vary  much  in  size,  and  that  there  is  a  progressive 
change  in  character  as  the  femic  components  increase,  as  well  as  with  diminishing 
quartz. 

With  the  exception  of  the  docalcic  and  percalcic  rangs,  to  which  belong,  respec¬ 
tively,  10.9  and  1  per  cent  of  the  analyses,  the  rangs  are  quite  evenly  represented.  Thus 
the  peralkalic  have  20.9  per  cent,  the  doinalkalic  31.2,  and  the  alkalicalcic  36.  On 
the  whole,  then,  it  will  be  seen  that  while  lime  is  abundant,  the  alkalies  dominate 
over  it  decidedly  in  most  rocks.  In  view  of  the  large  number  of  rocks  referred  at 
present  to  such  groups  as  diorite,  £abbro,  diabase,  and  basalt,  supposedly  character¬ 
ized  by  basic  plagioclase  (labradorite,  etc.),  the  small  representation  of  the  docalcic 
rangs  is  very  instructive.  This  is  all  the  more  striking  when  it  is  remembered  that 
some  of  the  lime  here  reckoned  as  forming  normative  anorthite  exists  modally  in 
augite  and  hornblende. 

Without  giving  the  figures,  it  is  seen  that  the  persalane  rocks  are  preponderantly 
either  peralkalic  or  domalkalic,  these  two  divisions  being  about  equally  large  (36 
and  45.3  per  cent),  and  together  constituting  81.3  per  cent  of  the  whole,  while  the 
alkalicalcic  analyses  form  only  16.9  per  cent  and  the  docalcic  and  percalcic  together 


«  Teall,  J.  J.  H.,  British  Petrography,  1888,  p.  401. 


104 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


1.6  per  cent.  In  the  dosalanes  the  rocks  become  more  calcic,  the  largest  rang  being 
the  alkalicalcic  one,  which  makes  up  just  50  per  cent  of  this  class,  the  domalkalic 
rangs  coming  next  with  23.4  per  cent  of  the  analyses,  the  docalcic  having  14.1  and 
the  peralkalic  11.8.  The  salfemanes  are  still  more  calcic  in  character,  46.1  per  cent 
of  the  analyses  of  this  class  belonging  to  the  alkalicalcic  rangs  and  24  per  cent  to 
the  docalcic  rangs.  It  will  also  be  seen  that  the  alkalies  increase  in  general  with 
increase  in  normative  quartz,  i.  e.,  silica  content,  while  lime  acts  inversely  in  this 
respect.  In  the  orders  containing  lenads  (feldspathoids)  the  more  alkalic  rangs  are 
naturally  more  numerous  than  those  with  much  lime,  though  in  the  salfemanes  there 
is  a  marked  increase  in  the  number  of  calcic  rangs  in  these  orders,  which  are  totally 
absent  in  the  persalanes. 

Of  the  subrangs,  based  on  the  relative  amounts  of  soda  and  potash,  the  most 
abundant  are  the  dosodic  and  presodic,  which  taken  together  make  up  55.7  per  cent 
of  the  total  number.  Next  to  these  are  the  sodipotassic,  to  which  belong  32.4  per 
cent.  The  others  are  few  in  number,  the  persodic  having  only  5.3,  the  dopotassic 
and  prepotassic  5.1,  and  the  perpotassic  the  minute  fraction  0.5  per  cent.  The  great 
preponderance  of  soda  over  potash  is  thus  strikingly  shown,  as  well  as  the  extreme 
rarity  of  truly  potassic  rocks.  This  last  is  of  especial  interest  in  view  of  the  large 
number  which  are  roughly  called  orthoclase  or  leucite  rocks,  the  comparatively  large 
amount  of  soda  being  ignored  in  the  prevailing  qualitative  classifications.  On  the 
other  hand,  the  small  number  of  persodic  rocks  shows  that  the  very  notable  amount 
of  potash  usually  present  is  in  general  practically  neglected.  It  will  be  observed, 
that  about  1  per  cent  of  the  analyses  belonging  to  the  percalcic  rangs  carry  so  little 
of  the  alkalies  that  these  may  be  neglected. 

In  the  persalanes  the  sodipotassic  and  dosodic  (including  presodic)  subrangs  con¬ 
stitute  about  87.6  per  cent  of  the  analyses,  being  present  in  almost  equal  amount 
(47.9  and  39.7  per  cent).  In  the  dosalanes  the  dosodic  (including  presodic)  subrangs 
preponderate,  the  analyses  which  fall  here  amounting  to  64.8  per  cent,  with  27.8  of 
sodipotassic,  while  in  salfemane  the  dosodic  subiangs  dominate  over  all  the  others 
still  more,  with  a  percentage  of  70.  It  is  thus  Seen  that  soda  increases  with  the 
femic  constituents,  while  potash  increases  with  the  salic,  though  not  to  so  great  an 
extent.  A  comparison  of  the  subrangs  with  the  orders  shows  that,  on  the  whole, 
potash  tends  to  increase  with  increasing  silica,  but  it  is  scarcely  necessaiy  to  give 
the  figures  here.  When  the  rangs  are  examined  in  regard  to  this  point,  the  increase 
of  soda  relative  to  potash,  as  the  rangs  become  more  calcic,  is  very  marked,  a  fact 
quite  in  accord  with  common  knowledge. 

Turning  now  to  the  last  two  classes,  the  dofemanes  and  the  perfemanes,  the  data 
are  less  satisfactory  on  account  of  the  much  smaller  number  of  analyses.  It  is 
obvious,  however,  that  rocks  composed  largely  of  the  polic  minerals  (pyroxenes  and 


GENERAL  CHARACTERS  OF  CLASSES  IV  AND  V. 


105 


olivines)  greatly  outnumber  those  with  preponderant  mitic  minerals  (magnetite, 
ilmenite,  titanite,  etc.).  The  figures  given  by  the  collection  would  indicate  that  the 
pyroxenes  are  far  more  abundant  than  olivine,  and  this  is  in  accord  with  general 
knowledge,  though  the  greater  tendency  to  decomposition  of  the  latter  mineral  modi¬ 
fies  considerably  the  relative  figures.  It  is  evident  that  alkalic  femic  molecules 
(acmite,  etc.)  play  a  very  subordinate  part  in  rock  magmas,  the  rangs  represented 
by  analyses  being  permirlic  without  exception.  The  conclusion  as  to  the  practical 
nonexistence  of  normative  femic  alkalic  molecules  must,  however,  be  modified  by 
study  of  the  femic  components  of  the  other  three  classes,  in  which  we  find  acmite 
and  sodium  metasilicate  (appearing  modally  in  arfvedsonite,  etc.),  present  to  some 
extent,  though  even  here  very  subordinate  to  the  mirlic  molecules.  Miric  molecules 
(with  (MgFe)O)  are  much  more  abundant  than  femic  calcic,  the  greater  part  of  the 
sections  of  rang  being  permiric,  only  a  few  domiric,  and  still  fewer  calcimiric.  It  is 
obvious  that  this  is  quite  in  line  with  our  knowledge  of  the  rarity  of  melilite.  MgO 
likewise  preponderates  very  largely  over  FeO,  since  the  great  majority  of  the 
analyses  are  either  permagnesic  or  domagnesic,  there  being  only  a  bare  half  dozen 
in  which  FeO  equals  MgO. 

It  should  be  noted  that  in  order  to  render  this  study  complete  the  subordinate 
components  in  each  class  should  likewise  be  examined.  Thus  the  remarks  on  the 
distribution  of  the  salic  constituents  should  be  supplemented  by  study  of  the  salic 
portion  of  the  analyses  belonging  to  the  dofemanes,  that  in  the  perfemanes  being 
negligible.  On  the  other  hand,  our  knowledge  of  the  distribution  of  the  femic 
oxides  would  be  greatly  enlarged  by  study  of  the  subordinate  femic  portions  of  the 
dosalane  and  salfemane  rocks,  which  would  add  much  to  our  too  scanty  data.  As  this 
is,  however,  a  first  approximation,  and  as  such  an  extension  would  consume  much 
time,  it  has  not  been  attempted. 

Looking  at  the  matter  in  a  general  way ,  and,  for  the  reasons  just  given,  neglect¬ 
ing-  the  consideration  of  the  femic  constituents  and  Classes  IV  and  V,  the  general 
distribution  may  be  illustrated  thus: 

If  we  imagine  the  three  tables  of  the  persalanes,  dosalanes,  and  salfemanes  to  be 
laid  one  above  the  other  in  this  order,  the  axis  (if  it  may  so  be  called)  of  rock  com¬ 
position  will  cut  through  the  system  obliquely  from  alaskose  in  columbare,  through 
tonalose  in  austrare,  to  auvergnose  in  gallare.  The  majority  of  the  igneous  rocks, 
at  least  65  per  cent  or  more,  would  then  be  found  in  an  oval  or  ovoid  having  its 
broader  apex  at  alaskase  and  its  acute  in  auvergnase  or  kedabekase.  The  center  of 
gravity,  so  to  speak,  of  this  would  lie  probably  in  tonalase,  but  near  monzonase,  or 
possibly  andase.  This  is,  of  course,  an  imaginative  and  somewhat  crude  way  of 
stating  the  condition  of  affairs,  but  the  examination  we  have  made  points  to  the  con¬ 
clusion  that  the  average  rock  will  be  close  to  the  center  of  gravity  of  the  system  thus 
roughly  determined. 


106 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


THE  AVERAGE  ROCK. 

Let  us  now  take  up  the  question  of  the  composition  of  the  average  rock,  its 
determination  from  the  data  at  hand,  and  its  position  in  the  system. 

It  is  well  known  that  estimates  of  the  average  composition  of  the  igneous  crust 
of  the  globe  have  been  made  by  Prof.  F.  W.  Clarke.  The  first  of  these®  was  based 
on  880  analyses,  many  of  them  incomplete,  of  both  igneous  and  metamorphic  rocks 
from  various  localities  on  the  globe.  His  second  b  and  third c  estimates  are  based  only 
on  analyses  of  rocks  of  the  United  States  made  by  the  chemists  of  the  United  States 
Geological  Survey,  680  being  available  for  the  former  and  830  for  the  latter,  with  a 
number  of  separate  determinations  of  silica,  lime,  and  alkalies.  An  estimate  of  the 
average  composition  of  the  igneous  rocks  of  Great  Britain  is  given  b}7  Harker.^ 

These  four  estimates  agree  very  closely  with  each  other,  and  will  all  be  found  in 
tonalose,  the  dosodic  subrang  of  tonalase,  the  alkalicalcic  rang  of  austrare,  the 
quardofelic  order  of  dosalane.  The  close  agreement  of  these  four  is  quite  remarkable, 
and  their  position  is  fully  in  line  with  the  general  conclusions  drawn  from  the 
preceding  discussion.  It  will  be  interesting  to  compare  with  them  the  results 
furnished  by  the  much  larger  set  of  data  made  available  in  this  collection. 

FIRST  METHOD. 

There  are  two  methods  possible  by  which  the  average  composition  may  be 
computed  from  the  analyses  present  in  the  collection.  One  is  that  which  was 
employed  by  both  Clarke  and  Barker,  namely,  the  simple  addition  of  all  the  separate 
determinations  of  the  different  constituents  and  subsequent  reduction  to  100  parts. 
This  is,  indeed,  the  only  method  available  with  analyses  arranged  according  to  the 
older  classifications,  with  almost  total  neglect  of  the  quantitative  relations  of  the 
constituents. 

I  have  calculated  the  average  rock  in  this  manner  from  the  superior  and  some 
of  the  inferior  analyses  contained  in  Part  I  of  the  collection.  Of  these  1,811  were 
available  for  the  purpose.  It  will  be  seen  later  that  this  number  is  somewhat  higher 
than  that  used  for  the  calculation  bjT  the  alternative  method,  the  explanation  being 
that  I  have  here  included  a  number  in  which,  although  they  are  otherwise  good,  the 
iron  oxides  had  not  been  separately  determined.  These  oxides  were,  of  course,  left 
out  of  account  in  the  calculations.  When  any  constituent  was  reported  in  an  analysis 
as  present  in  “traces,”  this  was  also  neglected,  as  this  term  means  generally  that  the 
constituent  was  supposed  to  be  present  in  small  amount,  but  was  not  determined. 


a  Clarke,  F.  W„  Bull.  U.  S.  Geol.  Survey  No.  78,  1891,  p.  34. 
bBull.  U.  S.  Geol.  Survey  No.  148,  1897,  p.  12. 


‘•Bull.  U.  S  Geol.  Survey  No.  168,  1900,  p.  14. 
<'Harker,  A.,  Geol.  Mag.,  Vol.  XXXVI,  1899,  p.  220. 


DATA  FOR  CALCULATION  OF  AVERAGE  ROCK. 


107 


It  happens  thus  that  there  are  fewer  determinations  available  for  the  iron  oxides, 
magnesia,  lime,  the  alkalies,  titanic  acid,  phosphoric  acid,  and  manganese  oxide  than 
for  silica  and  alumina. 

As  a  matter  of  interest,  and  in  order  that  the  present  results  may  be  used  in  the 
future  in  combination  with  other  additional  data,  there  are  given  below  the  number 
of  determinations  used  for  each  constituent  with  the  sum  total  in  each  case.  It  may 
be  added  that  none  of  the  analyses  of  Part  II  were  used,  though  many  in  which  the 
iron  oxides  had  not  been  separately  determined  are  otherwise  good,  since  this  pro¬ 
cedure  would  have  unduly  increased  the  relative  proportions  of  the  other  constituents 
of  these  more  femic  rocks  in  comparison  with  the  iron  oxides,  and  hence  have  intro¬ 
duced  serious  disturbance.  BaO,  S,  Zr02,  and  the  other  minor  constituents  are  not 
estimated  here.  Clarke’s  figures  for  them  are  undoubtedly  very  close  approximations 
to  their  true  value,  based  as  they  are  on  the  analyses  of  the  United  States  Geological 
Survey,  outside  of  which  these  constituents  are  seldom  determined. 


Number  of  de¬ 
terminations. 

Sum  total. 

Per  cent. 

Si02 . 

1,811 

105,  743.  22 

58.  239 

A1A . 

1,811 

28,  606.  74 

15.  796 

FeA  . 

1,  625 

5,417.  79 

3.334 

FeO . 

1,625 

6,  295.  95 

3.  874 

MgO . 

1,767 

6,  790.  79 

3.  843 

CaO . 

1,804 

9,  418. 19 

5.  221 

Na20 . 

1,804 

7,  057.  48 

3.  912 

k2o . 

1,794 

5,  670.  31 

3. 161 

H,0+ . 

1,704 

2,  433.  69 

1.428 

h2o- . 

471 

170.  83 

0.  363 

Ti02 . 

1, 139 

1, 183.  08 

1.039 

FA . 

955 

356. 29 

0.  373 

MnO . 

731 

160.  29 

0.  219 

100.  802 

These  figures,  calculated  to  100  per  cent,  are  given  in  column  I  in  the  table  on 
page  108.  In  column  II  is  given  Clarke’s  first  estimate,  based  on  analyses  from 
various  parts  of  the  globe;  and  in  column  III  his  third,  based  on  analyses  of  igneous 
and  metamorphic  rocks  from  the  United  States  alone.  These  two  last  are  likewise 
calculated  to  100  per  cent,  and  his  estimate  for  MnO  is  introduced. 


108 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


J 

II 

III 

Si02 . 

57.78 

58.  72 

59.  89 

AU>3 . 

15.67 

15.08 

15.45 

Fe203  . 

3.  31 

3.95 

2.  64 

FeO . 

3.  84 

3.  49 

3.  53 

MgO . 

3.81 

4.  50 

4.  37 

C’aO . 

5. 18 

5.30 

4.91 

Na20 . 

3.  88 

3.  21 

3. 56 

k2o . 

3. 13 

2.  91 

2.  81 

h2o+ . 

1.42 

1.  97« 

1.52 

H.,0  — . 

0.  36 

0.  40 

Ti02 . 

1.03 

0.  55 

0.  60 

TA . 

0.  37 

0.  22 

0.  22 

MnO . 

0.  22 

0. 10 

0.10 

100.  00 

100.  00 

100.  00 

a  Including  about  0.40  per  cent  of  hygroscopic  water. 


These  results,  it  will  be  evident,  are  very  closely  alike,  though,  as  will  be  seen 
later,  the  average  rock  according  to  my  calculations  and  that  according  to  Clarke’s  do 
not  fall  in  the  same  subrang  of  the  new  system  of  classification,  I  belonging  in  aker- 
ose,  but  II  and  Ill  in  tonalose,  though  all  three  are  transitional  in  character.  The 
most  marked  difference  between  them  is  in  the  silica,  mine  being  notably  lower  than 
the  other  two.  This  is  perhaps  to  be  ascribed  to  the  fact  that  I  have  probably 
included  in  my  data  more  analyses  than  Clarke  has  of  the  more  lenadic  or  more  femic 
rocks,  a  great  many  of  which  have  appeared  since  the  date  of  Clarke’s  first  estimate. 
The  still  higher  silica  in  III,  however,  would  seem  to  imply  that  the  rocks  of  the 
United  States  are,  on  the  whole,  somewhat  more  quaric  (siliceous)  than  those  else¬ 
where,  or  possibly  that  more  of  these  have  been  analyzed. 

The  somewhat  higher  figures  for  MnO  in  I  are  to  be  ascribed  to  the  greater  fre- 
quenc}^  of  high  percentages  for  this  oxide  reported  in  foreign  analyses,  the  larger 
part  of  which  are  due  to  the  analytical  error  already  spoken  of.  Clarke’s  figures  for 
this  are  probably  nearer  the  truth,  and  if  correction  be  made  for  this  the  amount  of 
alumina  shown  in  I  would  be  correspondingly  increased. 

On  the  other  hand,  the  alumina  of  I  is  certainly  a  trifie  too  high,  since  I  included 
in  my  data  some  analyses,  otherwise  good,  in  which  Ti02  and  P205  had  not  been 
determined  (rating  A3),  and  in  which  they  have  been  weighed  with  the  alumina. 
Some  Si02  is  also  included  in  many  of  the  A1203  determinations.  Ti02  is  also 
probably  somewhat  too  high  in  I. 

Criticisms  of  this  sort  might  be  made  in  regard  to  nearly  all  the  constituents,  and 
corrections  of  a  greater  or  less  degree  of  probable  correctness  could  be  applied  in 


CALCULATION  OB'  AVERAGE  ROCK. 


109 


each  case.  But  all  three  results  are  admittedly  but  first  approximations;  and,  until 
a  sufficiently  large  body  of  excellent  or  good  analyses  is  available — analyses,  that  is, 
in  which  all  the  important  constituents  have  been  determined — we  can  arrive  at  but  a 
very  rough  approximation  to  the  truth. 

It  must  also  be  remembered  that  the'foregoing  estimates  are  based  on  the  assump¬ 
tion  that  the  number  of  analyses  of  any  one  kind  of  igneous  rock  is  roughly  propor¬ 
tional  to  its  abundance  in  nature.  This  point  has  already  been  touched  on  above,  but 
it  is  as  well  to  reiterate  it,  since  it  is  fundamental  to  any  discussion  of  the  composition 
of  the  average  igneous  rock  or  of  that  of  the  crust  of  the  earth. 

SECOND  METHOD. 

The  alternative  method  is  based  on  the  number  of  analyses  found  in  each  class, 
order,  rang,  and  subrang,  and  on  the  assumption  that  the  composition  of  each  division 
is  that  of  its  center  point.  The  composition  of  each  division  is  then  weighted  accord¬ 
ing  to  the  number  of  analyses  present  in  it,  and  the  average  composition  then  calcu¬ 
lated  by  the  same  process  as  that  of  the  calculation  of  the  ideal  center  point  of  any 
division  (cf.  p.  81  et  seq.).  The  process,  though  apparently  complex,  is  in  reality 
quite  simple. 

This  method  of  procedure  is,  of  course,  open  to  the  objection  that  the  average 
composition  of  the  persalanes  and  the  perfemanes  is  not  at  the  ideal  center  point, 
where  the  amount  of  the  subordinate  mineral  group  is  nil — that  is,  in  the  persalanes 
the  actual  average  rock  would  lie  somewhere  between  its  theoretical  center  point, 
where  there  are  no  femic  minerals  present,  and  the  border  between  it  and  the  dosal- 
anes,  where  there  are  12^  of  femic  minerals.  Referring  to  the  graphic  representation 
of  our  system  of  subdivision,"  it  will  be  evident  (assuming  that  A  represents  the  salic 
portion)  that  this  average  position  will  be  halfway  between  the  vertical  lines  8  and  7 
on  the  left — in  other  words,  where  the  femic  minerals  make  up  6.25  per  cent  of  the 
rock.  The  same  reasoning  applies,  of  course,  to  the  perfemanes.  In  the  subsequent 
calculations,  therefore,  the  appropriate  corrections  will  be  made  for  the  compositions 
of  persalane  and  perfemane,  each  being  assumed  to  have,  respectively,  6i  per  cent  of 
femic  or  salic  components. 

It  may  be  observed  that  the  following  calculations,  as  well  as  those  necessary  to 
obtain  the  results  given  in  tabular  form  for  the  data  of  the  preceding  discussion  and 
the  present  calculations,  were  all  carried  out  with  the  use  of  a  seven-place  table  of 
logarithms,  so  that  the  results  will  be  found  accurate  in  the  last  decimal. 

In  order  to  arrive  at  the  average  composition,  both  the  salic  and  the  femic  com¬ 
ponents  must,  of  course,  be  considered.  The  distribution  of  these,  with  the  compo¬ 
sition  and  ratio  for  each  center  point,  is  given  in  Tables  VIII,  IX,  X,  annexed. 


aCross,  Iddings,  Pirsson,  Washington,  Jour.  Geol.,  Vol.  X,  1902,  p.  578;  Quantitative  Classification,  p.  121. 


110 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


These  figures  are  used  to  form  equations  expressing  the  relations  in  each  division, 
as  has  been  explained  in  the  calculation  of  center  points,  and  the  solution  of  these 
yields  the  average  composition  of  the  salic  and  the  femic  portions  of  the  average 
magma,  which  are  then  combined. 

Table  VIII.— CLASSES. 


Class. 

Analyses. 

Per  cent. 

Sal. 

Fem. 

Corrected. 

Sal. 

Fem. 

I 

652 

38.  11 

38.11 

35.  73 

2.  38 

II 

676 

39.  50 

29.  63 

9.  87 

29.63 

9.  87 

III 

304 

17.  77 

8.  88 

8.  89 

8.  88 

8.  89 

IV 

63 

3.  68 

0.  92 

2.  76 

0.  92 

2.  76 

V 

16 

0.  94 

0.  94 

0.  06 

0.  88 

1,711 

100. 00 

77.54 

22.  46 

75.22 

24.  78 

Sal 

Fem 


=  3.4523 


Table  IX.— SALIC  DIVISIONS. 
Salic  Orders. 


Order. 

Analyses. 

Per  cent. 

Q. 

F. 

L. 

1 

0 

0.  00 

2 

12 

0.  74 

0.  56 

0. 18 

3 

142 

8.  70 

4.  35 

4.  35 

4 

630 

38.60 

9.65 

28.  95 

5 

618 

37.87 

37.  87 

6 

164 

10.  05 

* 

7.54 

2.51 

7 

42 

2.  57 

1.29 

1.28 

8 

13 

0.  80 

0. 20 

0.  60 

9 

11 

0.  67 

0.  67 

1,632 

100. 00 

14.  56 

—  4.28 

80.  38 

+  9.34 

5.06 

«+4.28=Q 

10.  28 

89.  72 

9.  34=F 

«  Since  normative  quartz  and  lenad  can  not  coexist,  an  amount  of  quartz  sufficient  to  convert  the  lenad  (which  is 
assumed  to  be  orthosilicate)  into  polysilicate  feldspar  is  deducted  from  the  normative  quartz,  and  the  resultant  feldspar 
added  to  the  main  portion. 


CALCULATION  OF  AVERAGE  IJOCK. 


Ill 


Salic  Rangs. 


Kang. 

Analyses. 

Per  cent. 

KoO  "f  N  aoO . 

CaO'. 

1.  Peralkalic . 

341 

20.  89 

20.  89 

2.  Domalkalic . 

509 

31.19 

23.39 

7.  80 

3.  Alkalicalcic . 

588 

86.  03 

18.02 

18.  01 

4.  Docalcic . 

178 

10.91 

2.  73 

8. 18 

5.  Percalcic . 

16 

0.  98 

0.  98 

1,632 

100.  00 

65. 03 

34.  97 

K20-f  Na.20 
CaO' 


=  /?  =  1.8596 


Salic  Scbrangs. 


Subrang. 

Analyses. 

Per  cent. 

k2o. 

Na^O. 

Perpotassic . 

8 

0.  49 

0.  49 

Prepotassic . 

9 

0.  55 

0.  39 

0.  16 

Dopotassic . 

74 

4.  53 

3.  40 

1.13 

Sodipotassic . 

529 

32.  42 

16.21 

16.  21 

Dosodic . 

748 

45.83 

11.46 

34.  37 

Presodic  . 

161 

9.87 

2.84 

7.  03 

Periodic . 

87 

5.  33 

5.  33 

Percalcic  rangs . 

16 

0.  98 

34.  79 

64.  23 

1,632 

100.  00 

Na20 

K20 


=  y  =  1.8462 


Table  X.— FEMIC  DIVISIONS. 


Femic  Orders. 


Order. 


1.  Perpolic 

2.  Dopolic. 

3.  Polmitic 

4.  Domitic. 

5.  Permitic 


Analyses. 

Per  cent. 

Pol. 

Mit. 

40 

50.  64 

50.  64 

31 

39.  24 

29.  43 

9.  81 

4 

5.  06 

2.  53 

2.  53 

4 

0 

5.  06 

1.26 

3.  80 

79 

100.  00 

83.  86 

16. 14 

Mit  =  <P=6.1958 


112 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS. 


Femic  Sections  of  Orders. 


Section.™ 

Analyses. 

Per  cent. 

p. 

O. 

1 .  Perpyric . 

18 

22.  78 

22.  78 

2.  Dopyric  1 . 

22 

27.  85 

20.  89 

6.  96 

3.  Pyrolic . : . . 

19 

24.05 

12.  03 

12.  02 

4.  Domolic . 

13 

16.  46 

4. 11 

12.  35 

5.  Perolic . 

7 

8.86 

8.  86 

79 

100.  00 

59.81 

40. 19 

0=^-1.4882 

a  Includes  the  sections  of  Suborder  in  Class  IV,  Order  4  (adirondaekore). 
b  As  will  appear,  this  factor  is  not  nee  ’ed  in  the  calculations  which  follow. 


Femic  Sections  of  Hangs. 


Section. 

Analyses. 

Per  cent. 

(Mg,  Fe)  O. 

CaO". 

1 .  Permiric . 

'31 

39.  24 

39.  24 

2.  Domiric . 

39 

49.  37 

37.  03 

12.  34 

3.  Calcimine . 

9 

11.39 

5.  69 

5.  70 

4.  Docalcic . 

0 

5.  Percalcie . 

0 

79 

100.  00 

81.96 

18.04 

(Mg,Fe)0 

CaO//  ~ 


^=4.5432 


Femic  Subrangs. 


Subrang. 

Analyses. 

Per  cent. 

NgO. 

FeO. 

1 .  Permagnesic . 

19 

24.  05 

24.  05 

2.  Domagnesic . 

51 

64.  56 

48.  42 

. 

16. 14 

3.  Magnesiferrous . 

5 

6.  33 

3. 17 

3.16 

4.  DoferrOus . 

4 

5.06 

1.27 

3.  79 

5.  Perferrous . 

0 

79 

100.  00 

76.91 

23.09 

MgO 
Fe(  > 


=  05=3.3309 


Let  q  =  the  molecules  of  quartz,  or  of  Si02  in  quartz. 

Let  r  =  the  molecules  of  orthoclase,  or  of  K./>  in  orthoclase. 
Let  s  =  the  molecules  of  albite,  or  of  Na20  in  albite. 

Let  t  =  the  molecules  of  anorthite,  or  of  CaO  in  anorthite. 


CALCULATION  OF  AVERAGE  ROCK. 


113 


Then : 

60q  =  the  percentage  of  quartz. 

556r  =  the  percentage  of  ort hoc-lane. 

524s  =  the  percentage  of  albite. 

278t  =  the  percentage  of  anorthite. 

We  shall  then  have,  for  the  salic  portion,  the  equations: 


60q  -f-  556r  +  524s  +  278t  =  100  ( Class ) 

a  q  =  556r  -j-  524s  +  278t  (Order) 

P  t=r  +  s  (Rang) 

y  r  =  s  (Subrang) 

The  solution  of  these  yields: 

Quartz .  10.  28 

Orthoclase .  25.  60 

Albite .  44.53 

Anorthite . 19. 59 


100.  00 


These  figures  give  the  chemical  composition  of  the  salic  portion  of  tne  average 


rock  as: 


Si02. 

A1A 

CaO. 

Na20 

K20. 


65.89 
20.  56 
3.95 
5.27 
4.  33 


For  the  femic  portion  of  the  average  rock: 


100.  00 


Let  a  =  the  molecules  of  wollastonite,  or  of  CaO  in  wollastonite. 
Let  b  =  the  molecules  of  enstatite,  or  of  MgO  in  enstatite. 

Let  c  =  the  molecules  of  ferrosilite,  or  of  FeO  in  ferrosilite. 

Let  f  =  the  molecules  of  magnetite,  or  of  FeO  in  magnetite. 

Let  g  =  the  molecules  of  ilmenite,  or  of  FeO  in  ilmenite. 

Then: 

116a  =  the  percentage  of  wollastonite  in  the  femic  portion. 
100b  =  the  percentage  of  enstatite  in  the  femic  portion. 
132c  =  the  percentage  of  ferrosilite  in  the  femic  portion. 
232f  =  the  percentage  of  magnetite  in  the  femic  portion. 
152g  =  the  percentage  of  ilmenite  in  the  femic  portion. 


We  shall  then  have  the  equations: 

116a  +  100b  +  132c  +  232f  +  152g  =100 
116a  +  100b  +  132c  =  232<pf  +  152<pg  =  83.86 
^a  =  b  +  c  +  f  +  g 
b  =  oo  (c  +  f  +  g) 

232f  =3  (152)  g  =  456g 
232f  +  152g  =  16.14 


(Class) 

(Order «) 

(Section  of  rang  6) 
(Subrang) 

(Section  of  subrange) 


a  As  no  olivine  can  exist  (ex  hypothese)  in  the  average  rock,  the  salic  portion  being  quaric,  the  section  of  order  is 
perpyric,  and  hence  no  equation  is  needed  to  express  the  ratio  between  pyroxene  and  olivine— that  is,  the  section  of  order. 

b  As  all  the  rocks  which  are  known  to  belong  to  Classes  IV  and  V,  as  shown  in  the  collection,  are  permirlic,  no  equation 
for  rang  is  needed. 

c  Magnetite  and  ilmenite  are  assumed  to  be  present  in  the  ratio  of  3 : 1  exactly — that  is,  the  section  of  subrang  is 
assumed  to  be  tildohemic  and  the  femic  portion  of  the  average  rock  at  the  ideal  center  point  of  this  division.  This  is  based 
on  a  study  of  the  analyses  represented,  and,  while  not  absolutely  exact,  does  not  vary  notably  from  the  truth.  The  error 
involved  will  not  be  great  as  these  constituents  are  present  in  subordinate  amount,  and  the  calculation  is  thus  simplified. 

14128— No.  14—03 - 8 


114 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


The  solution  of  these  yields: 

Wollastonite  « .  18.11 

Enstatite .  54. 52 

Ferrosilite .  11.23 

Magnetite . . .  12. 10 

Ilmenite .  4.04 


100.  00 

These  figures  give  the  chemical  composition  of  the  femic  portion  of  tne  average 


rock  as: 

Si02. . 

Fe203 

FeO.. 

MgO 

CaO. 

Ti02 


47. 18 
8.  35 
11.80 
21.80 
8.  75 
2. 12 

100.  00 


If  we  assume  that  the  center  points  of  persalane  and  perfemane  are  at  the  extreme 
positions — that  is,  where  there  is  respectively  no  femic  or  salic  component — we  combine 
these  two  results  in  the  proportions  of  77.54  salic  and  22.46  femic.  We  shall  then 
obtain  the  results  given  in  I  below.  If,  however,  we  take  note  of  the  possible  objec¬ 
tion  already  mentioned,  that  the  center  points  of  these  will  not  be,  in  actual  fact, 
at  these  extreme  positions,  but  that  6.25  per  cent  of  femic  and  salic  components  must 
be  assumed  to  be  present  in  the  persalane  and  perfemane,  respectively,  we  shall, 
on  making  the  appropriate  corrections  and  using  the  figures  of  Table  VIII,  giving 
the  relations  of  the  classes,  obtain  the  results  seen  in  II.  Here  the  salic  and  femic 
portions  are  combined  in  the  proportion  of  75.22  of  the  former  to  24.78  of  the  latter. 
It  is  seen  that  the  results  in  each  case  are  practically  identical.  In  III  is  given  the 
results  of  my  first  calculation,  with  H20,  P205,  and  MnO  omitted,  recalculated  to 
100  per  cent.  IV  shows  Clarke’s  third  estimate,  likewise  calculated  to  100  per  cent 
after  deducting  H.,0,  P205,  and  other  minor  constituents. 


I. 

II. 

III. 

IV. 

Si02 . 

61.  69 

61.26 

59.21 

61.25 

au>3 . 

15.94 

15.  47 

16.  04 

15.81 

Fe2C>3 . 

1.88 

2.  07 

3.38 

2.  70 

FeO . 

2.  65 

2.  92 

3. 93 

3.  61 

MgO . 

4.  90 

5.40 

3.90 

4.  47 

CaO . 

5.02 

5. 14 

5.30 

5.  03 

Na20 . 

4.  09 

3.  96 

3.97 

3.  64 

K20 . 

3.35 

3.  25 

3.21 

2.87 

Ti02 . 

0.  48 

0.  53 

1.06 

0.  62 

100.  00 

100. 00 

100.  00 

100.  00 

a  As  the  present  purpose  is  not  to  calculate  the  norm,  but  to  determine  the  chemical  composition  of  the  femic  portion, 
the  molecules  of  wollastonite  are  not  combined  with  equivalents  of  the  hypersthenes  to  form  normative  diopside. 


POSITION  OF  AVERAGE  ROOK. 


115 


The  norms  of  these  calculate  out  as  follows: 


Quartz . 

Orthoclase. . . . 

Albite . 

Anorthite 

Diopside . 

Hypersthene  . 
Magnetite 
Ilmenite . 


I. 

II. 

III. 

IV. 

7.  97 

7.97 

7.  76 

7.  76 

7.  60 

7.  60 

11.31 

11.31 

19.  84 

■77. 55 

19.  22' 

•75.  24 

18.  98 

■76.  55 

17.  24] 

77.  59 

34.52 

-69.  58 

33.  46 

67.  48 

33.  55 

■68.  95. 

30.  76 

■66.  28 

15.22 

14.  80 

16.42 

18.  28 

7.  73^ 

>18.  82 

8.  49) 

20.  75 

7.  87) 

>16.  54 

8.  67  / 

5.  36) 

■17.  40] 
12. 04/ 

11.09/ 

12.  26 

22.  45 

I24.  76 

23.  45 

22.41 

2.72) 

[  3.  63 

3.  00) 

1  4.01 
1.01/ 

4.  90 1 

I  6.  91 
2.01) 

3.  83) 

5.  01 

0.91 

1. 18/ 

100.  00 

100.  00 

100.  00 

100. 00 

All  of  these  are  in  the  dosalane  class — that  is,  have  salic  minerals  dominant  over 
femic.  I,  II,  III,  however,  are  in  germanare,  or  have  feldspars  extreme  over 
quartz,  though  they  all  approach  the  border  of  austrare,  with  subordinate  quartz, 
where  IV  belongs.  I  and  II  are  domalkalie  and  belong  in  monzonase.  Ill  likewise 
is  domalkalie  and  falls  in  monzonase,  though  the  ratio  of  alkalies  to  salic  lime 
(1.707)  is  very  close  to  the  border  toward  andase.  IV,  on  the  other  hand,  is 
alkalicalcic  and  belongs  in  the  rang  tonalase.  All,  however,  are  dosodic,  I,  II, 
and  III  being  in  akerose,  and  IV  in  tonalose. 

It  is  obvious  from  this  discussion  that  the  composition  of  the  average  rock 
probably  does  not  fall  well  within  any  one  subrang  of  the  classification,  but  that  it  is 
near  the  border  and  is  hence  transitional  in  character.  Comparatively  slight  changes 
in  the  data  used  for  its  determination  will  therefore  throw  it  into  one  or  the  other 
division  of  the  system.  Its  general  characteristics  are  clear,  notwithstanding. 
Salic  minerals  will  constitute  about  75  per  cent,  and  it  will  contain  considerable 
normative  quartz,  or  an  excess  of  silica  over  that  needed  to  satisfy  all  the  bases. 
The  alkalies  and  salic  lime  will  be  about  equal,  the  former  in  somewhat  greater 
amount,  and  soda  will  be  markedly  dominant  over  potash.  The  femic  minerals  will 
form  about  one-quarter  of  the  rock,  and  will  consist  chiefly  of  hypersthene  and 
diopside,  the  former  preponderating,  while  the  quantity  of  magnetite  and  ilmenite 
will  be  small.  Chemically  it  will  approximate  to  the  four  estimates  given  above. 

This  general  position  is  about  what  we  were  led  to  expect  from  the  former 
discussion,  and  it  is  worthy  of  note  that  tonalose  and  andose  are  the  two  subrangs 
most  largely  represented  by  analyses  to  be  found  in  the  tables.  Modifications  of 
these  estimates  must  be  made  in  the  future,  as  more  satisfactory  data  become  avail¬ 
able  with  increase  in  the  number  of  good  analyses  and  as  some  knowledge  is  gained 
in  regard  to  the  relative  masses  of  rocks  belonging  to  the  various  magmas.  For  the 
present,  however,  we  must  rest  content  with  the  approximations  given  above,  with 
the  understanding  that  they  are  subject  to  the  limitations  and  future  corrections 
already  explained. 


116 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


XjIST  of  abbreviations. 

In  the  case  of  words  etymologically  alike,  but  in  different  languages,  only  the 
English  form  is  given.  The  other  abbreviations  used  will  be  self-explanatory. 


REFERENCES. 

A . American. 

A.  A.  A.  S. _ _ American  Association  for  the  Advancement  of  Science. 

Aarb . Aarbog. 

Abb  . Abhandlung. 

Ac . Academy,  etc. 

Afh . Afhandlingar. 

A.  G . American  Geologist  (.Minneapolis). 

A.  J.  S . American  Journal  of  Science  (New  Haven). 

Ak . Akademie. 

Ann . Annals,  etc. 

A.  R . Annual  Report. 

A.  R.  U.  S.  G.  S  .  .Annual  Report  of  the  United  States  Geological  Survey  (Washington). 

Att . Atti. 

B . Bulletin,  etc. 

B.  B  . Beilage  Band. 

B.  C.  G.  It  ...... Bolletino  del  R.  Comitato  Geologico  Italiano  (Roma). 

Ber . Berichte. 

B.  G.  S.  A . Bulletin  of  the  Geological  Society  of  America  (Rochester). 

B1 . Blatt. 

B.  M.  C.  Z . Bulletin  of  the  Museum  of  Comparative  Zoology  (Cambridge). 

B.  S.  C.  G.  Fr _ Bulletin  de  la  Service  de  la  Carte  Geologique  de  France  (Paris). 

B.  S.  G.  It . Bolletino  della  Soeieta  Geologica  Italiana  (Roma) . 

Btr . Beitriige. 

B.  U.  S.  G.  S _ Bulletin  of  the  United  States  Geological  Survey  (Washington). 

C . Commission,  etc. 

Cb . Centralblatt. 

C.  I.  P.  W . Cross,  Iddings,  Pirsson,  Washington. 

Cong . Congress. 

C.  R . Comptes  Rendus. 

Cte . Carte. 

I) . Deutsc.h. 

Hep . Department. 

Ds . Denkschrift. 

Eg.  Kg . Eruptivgesteine  des  Kristianiagebietes  (Kristiania) . 

Erdk . Erdkunde. 

Erl . Erliiuterung. 

Exc . Excursion. 

Finl . Finland. 

F.  K . Foldtani  Kozldny  (Budapest). 

Fol . Folio. 

Fr . France. 

G . Geology,  etc. 

Ges . Gesellschaft. 

G.  F.  F . Geologiske  Forening  in  Stockholm  Forhandlingar  (Stockholm). 

G.  Kt . Geologische  Karte. 

G.  M . Geological  Magazine  (London). 

G.  S . Geological  Survey. 

H . History. 


ABBREVIATIONS. 


117 


Hd . Handlingar. 

Imp . Imperial. 

Ind . India. 

In.  Diss . Inaugural  Dissertation. 

Inst . Institute. 

Int . International. 

Ir . Irish. 

It . Italian. 

J . Journal. 

Jb . Jahresbericht. 

J.  G . Journal  of  Geology  (Chicago). 

Jhft . Jahresheft. 

K . Kaiserlich. 

Kt . Karte. 

L- A . Landes-Anstalt. 

Mag . Magazine. 

Mem . Memoir,  etc. 

Min . Mineralogy,  etc. 

Mt . Mittheilungen.  , 

Mus . Museum. 

M.  U.  S.  G.  S _ Monograph  of  the  United  States  Geological  Survey  (Washington). 

N . New,  etc. 

Nat . Nature,  etc. 

Nf . Naturforscher. 

Nh . Natural  History. 

N.  J . Neues  Jahrbuch  fiir  Mineralogie,  Geologie,  und  Palaontologie  (Stuttgart).. 

N.  J.  B.  B . Neues  Jahrbuch,  Beilage  Band  (Stuttgart) . 

No . Number. 

Notbl . Notizblatt. 

Nw . Naturwissenschaft. 

P . Petrography. 

Ph . Philosophy,  etc. 

Phys . Physical,  etc. 

Pr . Proceedings,  etc.  Also  Preussen. 

Pt . Part. 

Q . Quarterly. 

Q.  J.  G.  S . Quarterly  Journal  of  the  Geological  Society  of  London. 

R . Royal. 

R-A . Reichs-Anstalt. 

Rec . Records. 

Rend . Rendiconti. 

Rep . Report. 

Rev . Review,  etc. 

Sb . Sitzungsberichte. 

Sc . Science. 

Soc . Society,  etc. 

Sp.  K . Spezial  Karte. 

T . Transactions. 

T.  M.  P.  M . Tschermak’s  Mineralogische  und  Petrographische  Mittheilungen  (Wien). 

Un . University  etc. 

Und . Undersdkning,  Undersogelse. 

U.  S . United  States. 

U.  S.  G.  S . United  States  Geological  Survey. 

V . Volume. 

Ver . Verein. 


118 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


Vh . Yerhandlungen. 

Vid . Videnskab.  » 

Wiss . Wissensehaft. 

Z . Zeitschrift. 

Z.  D.  G.  G . Zeitschrift  der  Deutsche  Geologische  Gesellschaft  (Berlin). 

Z.  K . Zeitschrift  fur  Krystal  log  rap  hie  (Miinchen). 

MINERALS. 

A . apatite  subgroup  (apatil  j,  fluorite,  calcite,  pyrite,  iron,  etc.). 

ab . albite. 

ac . acmite. 

am . akermanite. 

an . anorthite. 

ap . apatite. 

C . corundum. 

cc . calcite. 

cm . chromite. 

di . diopside. 

en . enstatite. 

F . feldspar  subgroup  (orthoclase,  albite,  anorthite). 

fa . fayalite. 

fo . forsterite. 

fr . fluorite. 

fs . ferrosilite. 

H . hemic  subgroup  (magnetite,  chromite,  hematite). 

hm . hematite. 

hy . hypersthene. 

il . ilmenite. 

ir . . . iron  (metallic). 

kp . kaliophilite. 

ks  . potassium  metasilicate. 

L . lenad  subgroup  (leucite,  nephelite,  sodalite,  noselite). 

lc . leucite. 

M . mitic  subgroup  (magnetite,  chromite,  hematite,"  ilmenite,  titanite,  perofskite,  rutile). 

mt . . . magnetite. 

ne . nephelite. 

no . noselite. 

ns . sodium  metasilicate. 

0 . olivine  subgroup  (olivine,  ackermanite). 

ol . olivine. 

or . orthoclase. 

org . organic  matter. 

P . pyroxene  subgroup  (acmite,  sodium  metasilicate,  potassium  metasilicate,  diopside, 

wollastonite,  hypersthene) . 

pf . . perofskite. 

pr . pyrite. 

Q . quartz. 

ru . rutile. 

so . sodalite. 

T . tilic  subgroup  (ilmenite,  titanite,  perofskite,  rutile). 

tn . titanite. 

wo . wollastonite. 

X . rare  earths,  not  identified,  insoluble  in  melted  KH  (S04). 

Z . zircon. 


ABBREVIATIONS. 


MISCELLANEOUS. 


cor . corrected. 

E . east. 

lab . . laboratory. 

M . miles. 

N . north. 

n . near. 

n.  d . not  determined. 

P . page. 

p.  n.  d . present,  not  determined. 

Priv.  contrib _ private  contribution  (unpublished). 

R . rang. 

Ref . reference. 

S . south. 

sp.  gr . specific  gravity. 

SR . subrang. 

tr . trace. 

W . ,...west. 


119 


PART  I  . 


SUPERIOR  ANALYSES:  CLASSIFIED  ACCORDING  TO  THE  QUANTITATIVE  SYSTEM  OF 
PETROGRAPHY  PROPOSED  BY  CROSS,  IDDINGS,  PIRSSON,  AND  WASHINGTON. 


121 


122 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE. 


RANG  1.  PREALKALIC.  DARGASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.20 

k2o 

h2o+ 

H20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

80.  99 

12.21 

0.  38 

0.  60 

0.  40 

0.  07 

0.31 

2.  47 

2.29 

99.  72 

A3.  Ill 

1.350 

.120 

.002 

.008 

.010 

.001 

.005 

.026 

1 

2 

79.  69 

13.  49 

0.  14 

2.  08 

0.  66 

0.  46 

0.  08 

2.71 

n.  d. 

99.  31 

l 

A3.  Ill 

1.328 

.132 

.001 

.030 

.017 

.009 

.001 

.028 

RANG  1.  PREALKALIC.  DARGASE. 

1 

81.43 

13.  70 

1.58 

n.  d. 

0.06 

0.  37 

1.02 

1.28 

0.  92 

100.  36 

A3.  Ill 

1.357 

.134 

.010 

(.020) 

.002 

.007 

.016 

.013 

2 

80.  36 

11.  12 

1.77 

n.  d. 

0. 56 

0.  67 

1.82 

2.  47 

1.96 

100. 73 

A3.  Ill 

1.339 

.109 

.011 

(.022) 

.014 

.012 

.030 

.026 

RANG  1.  PREALKALIC.  DARGASE. 


1 

83.  59 

5.  42 

trace 

trace 

trace 

3.  44 

5.  33 

1.37 

0.  76 

99.91 

A3.  Ill 

1.393 

.053 

— 

— 

— 

.062 

.086 

.015 

2 

76.  93 

14.  35 

0.  85 

0.  23 

0.12 

1.29 

2.  71 

0.  60 

1.01 

1.  71 

99.  80 

A3.  Ill 

1. 282 

.141 

.005 

.003 

.003 

.023 

.043 

.006 

RANG  2.  ALKALICALCIC. 


1 

75.  05 

13. 16 

1.63 

3.  07 

0.  38 

1.80 

0.92 

2.  58 

1.  57 

100. 16 

2.  468 

A3.  Ill 

1.251 

.129 

.010 

.043 

.010 

.032 

.014 

.027 

18° 

2 

72.  03 

14.  87 

3. 11 

2.21 

1.37 

1.41 

0.  78 

2.  32 

2.  02 

trace 

100. 12 

2.  523 

A3.  Ill 

1.201 

.146 

.020 

.030 

.034 

.025 

.013 

.024 

— 

f  , 

20° 

3 

80.  55 

9.87 

2. 13 

n.  d. 

0.81 

2.21 

0.  42 

2.  43 

1.06 

99. 48 

A3.  Ill 

1.343 

.096 

.013 

(.026) 

.020 

.039 

.007 

.025 

RANG  2.  ALKALICALCIC. 


1 

77. 55 

14.61 

n.d. 

2.  21 

0.  32 

2. 12 

1.43 

1.62 

n.  d. 

0.  57 

0.  08 

100.  51 

A3.  Ill 

1.293 

.143 

— 

.030 

.008 

.038 

.022 

.017 

.004 

.001 

RANG  2.  ALKALICALCIC. 


PERSALANE. 


123 


SUBCLASS  I.  Q-f-F+L  EXTREME  OVER  C+Z. 
ORDER  2.  DOQUARIC.  BELGARE. 


SUBRANG  1.  PREPOTASSIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  68.8 
or  14.5 
ab  2. 6 
an  0. 3 

C  8.9 

hy  1. 9 
mt  0. 5 

Heidenstein, 

Schwarz  wald, 

Baden. 

Bunsen’s  Lab¬ 
oratory. 

A.  Schmidt, 
cf.  N.  L,  1889,  I,  p.  95. 

Porphyry. 

Q  65.4 
or  15.6 
ab  0. 5 
an  2. 5 

C  9.6 

hy  5.5 
nit  0. 2 

Mount  Bischoff,  Tas¬ 
mania. 

H.  Sommerlad. 

A.v.  Groddeck, 

Z.  D.  G.  G.,  XXXIX, 
p.  80,  1887. 

Porphyry. 

SUBRANG  2.  SODIPOTASSIC. 

Q  68.8 
or  7.2 
ab  8.4 
an  1.9 

C  10.0 

hy  2.  9 

Pine  Lake,  Ontario. 

N.  N.  Evans. 

F.  D.  Adams, 

B.  G.  S.  A.,  IX, 
p.  169,  1898. 

Nodule  in  gran¬ 
ite. 

Q  56.6 
or  14.5 
ab  15. 7 
an  3. 3 

C  4.2 

hy  4. 4 

Grainsgill,  Carrock 
Fell,  England. 

L.  J.  Spencer. 

A.  Harker, 

Q.  J.  G;  S.,  LI, 
p.  141,  1895. 

Greisen. 

SUBRANG  3.  PRESODIC. 


Q  60.3 
or  8.3 
ab  19.  9 

ns  2.9 
wo  7. 1 

Berkeley,  California. 

C.  Palache. 

C.  Palache, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  67,  1894. 

Soda-rhyolite. 

A1203  low? 

Q  56. 3 
or  3. 3 
ab  22. 5 
an  6. 4 

C  7.0 

hy  0.3 
mt  0.  7 
hm  0. 3 

Schwarzthal,  Wind- 
giille  Mountains, 
•Switzerland. 

Serda. 

C.  Schmidt, 

N.  J.  B.  B., 

VI,  p.  432,  1886. 

Porphyry. 

Schistose. 

Not  fresh. 

SUBRANG  1.  PREPOTASSIC. 


Q  53.9 
or  15. 0 
ab  7. 3 
an  8. 9 

C  5.7 

hy  5.4 
mt  2. 3 

Angera,  Lago  Mag- 
giore,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Ac.Gioen., 

XVIII,  p.  9,  1885. 

Porphyry. 

Q  53.1 
or  13.3 
ab  7.8 
an  7. 0 

C  8.6 

hy  4.7 
mt  4. 6 

Invorio  Superiore, 
Lago  d’Orta,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Ac.  Gioen. , 

XVIII,  p.  21,  1885. 

Porphyry. 

Q  61.6 
or  13.9 
ab  3.7 
an  10.8 

C  2.6 

hy  5.5 

Garrarus,  County 
Waterford,  Ireland. 

Jones  and  Rob¬ 
inson. 

F.  W.  C.  Reed, 

Q.  J.  G.  S.,  LVI, 
p.  679,  1900. 

Felsite. 

SUBRANG  2.  SODIPOTASSIC. 

• 

Q  56.7 
or  8. 5 
ab  11. 5 
an  10.  6 

C  6.7 

hy  4.8 

Eruption  1888-89, 
Vulcano,  ^Eolian 
Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min.,  Ill, 
p.  107,  1892. 

Quart  z-andesite . 

Bomb. 

PA  high? 

SUBRANG  3.  PRESODIC. 


Q  60.5 
or  3. 3 
ab  7.9 
an  7. 5 

C  8.8 

hy  9.4 

Alausi,  Ecuador. 

J.  Siemiradzki. 

J.  Siemiradzki, 

N.  J.,  B.  B.,  IV, 
p.  209,  1886. 

Dacite. 

Q  59.6 
or  4.5 
ab  20.4 
an  8. 3 

C  0.5 

hy  4.7 

Oberhunden,  West¬ 
phalia. 

Bomer. 

0.  Miigge, 

N.  J.,  B.B.,  VIII, 
p. 568, 1893. 

Quartz-kerato- 

phyre. 

Not  fresh. 

124 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 
RANG  3.  PRECALCIC. 


No. 

Si02 

A120s 

Fe203 

FeO 

MgO 

CaO 

Na20 

1 

o 

M 

h20+ 

H20- 

C02 

Ti02 

PA 

MnO  BaO 

Sum 

Sp.  gr. 

1 

79.92 

5.61 

3.  38 

n.  d. 

0.  04 

2.  45 

0.  30 

1.19 

7.38 

trace  1 

100. 27 

A4.  IV 

1.332 

.055 

.021 

(.042) 

.001 

.044 

.005 

.013 

j 

CLASS  I.  PERSALANE. 

RANG  1.  PERALKALIC.  AIASKASE. 


1 

A3.  Ill 

78.  04 

1.301 

11.98 

.117 

0.  23 

.001 

0.  60 

.008 

0.  04 

.001 

0.  62 

.011 

0.24 

.004 

6.  83 

.072 

1.41 

100. 01 

RANG  1.  PERALKALIC.  ALASKASE. 

1 

79.  75 

10.  47 

0.64 

0.  92 

0. 13 

0. 15 

1.36 

6.  01 

0.  60 

0.  08 

0. 15 

trace 

trace 

0.  06 

100.  37 

Al.  I 

1. 329 

.103 

.004 

.012 

.003 

.003 

.022 

.064 

.002 

— 

— 

2 

78.  83 

10.  88 

1.63 

n.  d. 

0.  35 

0.  22 

2. 13 

5.  31 

0.32 

99.  67 

A3.  Ill 

1.314 

.106 

..010 

.020 

.009 

.004 

.034 

.057 

3 

76. 10 

12. 95 

0.  65 

0.  09 

0. 14 

0. 12 

2.36 

6.  50 

0.  48 

0. 17 

none 

0.  07 

0.  02 

trace 

99.  65 

! 

A2.  II 

1.268 

.'27 

.004 

.001 

.004 

.002 

.038 

.069 

.001 

— 

— 

4 

75.  39 

13.  65 

0.  38 

0. 18 

0. 15 

0.51 

1.  84 

6.  81 

1.13 

trace 

trace 

0. 14 

100. 18 

A2.  II 

• 

1.257 

.134 

.002 

.003 

.004 

.009 

.029 

.072 

— 

.002 

5 

74. 40 

14.43 

0.  22 

0.  89 

0.07 

0.  58 

1.  76 

6.56 

0.92 

0. 15 

0. 12 

0.  22 

trace 

trace 

100.  36 

Al.  I 

1.240 

.142 

.001 

.012 

.002 

.010 

.028 

.070 

.001 

.002 

_ 

6 

73.  23 

12.  73 

0.  99 

0. 16 

0.  22 

0.  61 

1.91 

5.17 

4.51 

0.  53 

0.  09 

0.  02 

trace 

0.02 

100. 19 

Al.  I 

1.221 

.125 

.006 

.002 

.006 

.010 

.030 

.056 

.001 

— 

— 

7 

74.  69 

16.21 

trace 

1.16 

0.  48 

0.  28 

1.18 

3.64 

1.23 

0.  58 

99.  55 

2.64 

B3.  IV 

1.245 

.159 

— 

.017 

.012 

.005 

.019 

.038 

.008 

8 

76.  43 

11.69 

0.  57 

0.  62 

0.  30 

trace 

1.62 

6.  96 

0.  84 

0.  08 

trace 

0.  09 

99.  30 

2.  600 

B2.  Ill 

1.274 

.114 

.004 

.008 

.008 

.026 

.074 

— 

.001 

9 

76.  06 

11.  36 

2.  23 

n.  d. 

0. 12 

0.58 

1.17 

7.27 

0.  90 

0. 12 

99.  81 

2.  613 

A3.  Ill 

1.268 

.ill 

.014 

(.028) 

.003 

.010 

.019 

.078 

.002 

« 

10 

75.  27 

12.  92 

1.89 

n.  d. 

0.  47 

0.  32 

1.14 

6.48 

0.  61 

trace 

0.29 

« 

100.  63 

2.66 

A3.  Ill 

1.255 

.126 

.012 

(.024) 

.012 

.005 

.018 

.069 

— 

.004 

11 

76.  94 

12.  20 

2.  34 

n.  d. 

0.  32 

0. 57 

1.47 

4.65 

1.15 

99.64 

\ 

2.451 

A4.  IV 

1.282 

.120 

.014 

(.028) 

.008 

.010 

.024 

.050 

17° 

12 

75.  30 

11.40 

5.40 

n.  d. 

0.  60 

0.  75 

1.45 

6.13 

trace 

101.  03 

2.  67 

B4.  V 

1.255 

.112 

.034 

(.068) 

.016 

.013 

.023 

.065 

— 

! 

PERSALANE - MAGDEBURGtOSE. 


125 


ORDER  2.  DOQUARIC.  BELGARE— Continued. 
SUBRANG  1.  PREPOTASSIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  60. 0  di  1.7 

or  7. 2  hy  4.  8 

ab  2.6 
an  10.3 

Between  Livan  and 
tisku,  Persia. 

V.  Steinecke. 

V.  Steinecke, 

Z.  Ges.  Nw.  Halle, VI, 
p.  70,  1887. 

Pitchstone. 

ORDER  3.  QUARFELIC.  COLUMBARE. 

SUBRANG  1.  PERPOTASSIC. 


Q  48.9 
or  40. 0 
ab  2.1 
an  3. 1 

C  3.1 

by  1.0 
rnt  0. 2 

Riggenbach  Thai, 
Schtvarzwald, 

Baden. 

Bunsen’s  Lab¬ 
oratory. 

A.  Schmidt, 
cf.  N.  J.,  1889,  I,  p.  95. 

Porphyry. 

SUBRANG  2. 

DOPOTASSIC.  MAGDEBURGOSE. 

ZrO» 

S 

NiO 

SrO 

Li20 

0.05 

none 

none 

trace 

trace 

Q  47.8 
or  35.  6 
ab  11. 5 
an  0.8 

C  1.4 

hy  1.4 
mt  0.8 

Near  Blowing  Rock, 
Watauga  County, 
North  Carolina. 

W.  F.  Hille- 
brand. 

A.  Keith, 

B.  U.  S.  G.  S. ,  168, 
p.  52,  1900. 

Quartz-por¬ 

phyry. 

Q  43.9 
or  31. 7 
abl7.8 
an  1.1 

C  1.1 

hy  2.9 

Pine  Lake,  Ontario. 

N.  N.  Evans. 

F.  D.  Adams, 

B.  G.  S.  A.,  IX, 
p.  169,  1898. 

Granite. 

NiO 

l 

none 

Q.  37.1 
or  38. 4 
ab  19. 9 
an  0. 6 

C  1.8 

hy  0.4 
mt  0. 2 
hmO.  5 

Felch  Mountain, 
Michigan. 

H.  N.  Stokes. 

H.  L.  Smith, 

M.  U.  S.  G.  S., 
XXXVI,  p.  389, 1899. 

Granite. 

Q  37.  7 
or  40. 0 
abl5. 2 
an  2. 5 

C  2. 3 

hy  0.6 
mt  0.5 

Silver  Cliff,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 
17A.R.U.S.G.S., 

II,  p.  324,  1896. 

Rhyolite. 

F 

SrO 

Li.>0 

0.04 

none 

trace 

Q  37.3 
or  38. 9 
ab  14. 7 
an  2.8 

C  3.5 

hy  1.7 
mt  0.2 

Currant  Creek  Can¬ 
yon,  Pike’s  Peak, 
Colorado. 

W.  F.  Hille- 
brand. 

E.  B.  Mathews, 

B.  U.  S.  G.  S.,  148, 
p.  160,  1897. 

Granite. 

SrO 

Li20 

none 

trace 

Q  40.7 
or  31. 1 
ab  15. 7 
an  2.8 

C  3.0 

hy  0.6 
mt  0.5 
hm  1. 1 

Buena  Vista  Peak, 
Amador  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

J.  G.,  Ill, 
p.  407,  1895. 

Rhyolite. 

Also  in  17 
A.R.U.S.G.S., 
I,  p.  721, 1896. 

Li20 

0. 10 

Q  51.8 
or  21. 1 
ab  10. 0 
an  1.4 

C  9.9 

hy  3.4 

Cam  Brea  Hill,  Red¬ 
ruth,  Cornwall. 

Phillips. 

J.  J.  H.  Teall, 

Brit.  Petrog., 
p.  314,  1888. 

Granite. 

A120,  high? 
Alkalies  low? 

so3 

0. 10 

Q  39.7 
or  41.1 
ab  13. 6 

C  1.4 

hy  1.3 
mt  0.9 

Alvensleben,  n.  Mag¬ 
deburg,  Saxony. 

Hampe. 

F.  Klockmann, 

Jb.  Pr.  G.  L-A., 

XI,  p.  192,  1892. 

Quartz-por¬ 

phyry. 

Q  38.1 
or  43. 4 
ab  10. 0 
an  2. 8 

C  0.4 

hy  4.0 

Klinzerberg,  n.  Mag¬ 
deburg,  Saxony. 

Bodliinder. 

F.  Klockmann, 

Jb.  pr.  G.  L-A., 

XI,  p.  180,  1892. 

Quartz-por¬ 

phyry. 

B0O3 

1.24 

Q  41.2 
or  38.4 
ab  9.4 
an  1. 4 

C  3.5 

hy  4. 4 

Rican,  n.  Prague, 
Bohemia. 

K.  Preis. 

F.  Katzer, 

Jb.  Wien.  G.  R-A., 
XXXVIII, 
p.  411,  1898. 

Tourmaline- 

pegmatite. 

3  meters  from 
contact. 

Q  47.5 
or  27.8 
abl2. 6 
an  2. 8 

C  3.7 

hy  4.5 

Arona,  Lago  Mag- 
giore,  Piedmont. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Acc.  Gioen. 
Catania,  XVIII, 
p.  7,  1885. 

Porphyry. 

Q  36. 7 
or  36. 1 
ab  12. 0 
an  3. 6 

C  1.1 

hyll.4 

St.  Thomas  Mount, 
Madras,  India. 

P.  C.  Roy. 

T.  H.  Holland, 

Mem.  G.  S.  India, 
XXAHII,  p.  142, 1900. 

Charnockite 
( hypersthene- 
granite). 

Sum  high. 

126 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 

CLASS  I.  PERSALANE — Continued. 

RANG  1.  PERALKALIC.  ALASKASE. 


No. 

Si02 

Al-A 

FeA 

FeO 

MgO 

CaO 

Na2G 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

77.28 

11.24 

1.  74 

none 

0.  21 

trace 

3. 10 

4.  55 

1.16 

0.17 

trace 

0.  02 

99.  47 

A2.  11 

1.288 

.110 

.011 

— 

.005 

— 

.050 

.049 

— 

— 

2 

73.  85 

13. 15 

3.  27 

0.36 

0.  32 

0.  82 

2.  29 

5.  42 

0.  71 

0.  06 

0.  09 

100.  34 

A2.  II 

1.231 

.129 

.020 

.005 

.008 

.014 

.037 

.058 

— 

.001 

3 

79.  57 

11.41 

0.  20 

0.  70 

trace 

0.  21 

3.46 

3.  52 

0.61 

0. 18 

0. 11 

trace 

none 

0.  05 

100.  02 

Al.  I 

1.326 

.112 

.001 

.010 

— 

.003 

.056 

.037 

.001 

— 

— 

— 

4 

74.  62 

10.01 

3.  85 

1.  72 

0.  33 

2.  43 

3.  33 

3.  38 

0.  24 

99.  91 

A3.  Ill 

1.244 

.098 

.024 

.024 

.008 

.043 

.053 

.036 

5 

77.  05 

12.  84 

0.  56 

0.  14 

trace 

0.57 

2.  81 

5.  52 

0.  48 

0.  22 

none 

0. 12 

none 

none 

none 

100.  31 

Al.  I 

1.284 

.126 

.004 

.002 

— 

.010 

.045 

.059 

.002 

— 

— 

— 

6 

76.  87 

12.  52 

0.  67 

none 

0.  09 

0. 49 

2.  47 

5.  78 

0.  52 

0.  25 

0. 11 

0.  05 

99.  82 

A2.  II 

1.281 

.122 

.004 

— 

.002 

.009 

.040 

.  062 

.001 

— 

— 

— 

7 

75.  52 

14.  11 

1.  74 

0.  08 

0. 10 

0.  78 

3.  92 

3.63 

0.39 

none 

none 

100. 38 

Al.  I 

1.255 

.138 

.011 

.001 

.003 

.014 

.063 

.039 

— 

— 

8 

77.03 

12.  00 

0.  76 

0.  86 

0.04 

0.  80 

3.  21 

4.  92 

0.30 

0.  14 

0.  13 

trace 

trace 

trace 

100.  55 

• 

0. 15 

Al.  I 

1.284 

.118 

.005 

.012 

.001 

.014 

.051 

.053 

.002 

— 

— 

— 

100. 40 

9 

77.  02 

11.63 

0.32 

1.09 

0. 14 

1.24 

2.85 

5.  21 

0.35 

trace 

99.  85 

A3.  Ill 

1.  284 

.114 

.002 

.015 

.004 

.022 

.046 

.  056 

10 

73.  11 

13. 16 

0.  62 

0.  23 

0. 19 

0.  54 

2.  85 

5. 10 

4.05 

0. 14 

99.  99 

A3.  Ill 

1.219 

.129 

.004 

.003 

.005 

.010 

.046 

.  055 

.002 

11 

77.  33 

12.  55 

0.  91 

n.  d. 

0. 10 

0.17 

3. 19 

4.  80 

0.  53 

0. 15 

none 

0.  09 

trace 

trace 

trace 

99.  82 

A2.  II 

1.289 

.123 

.005 

(0.10) 

.003 

.003 

.051 

.051 

.001 

— 

— 

— 

12 

75.  84 

13.  38 

1.45 

n.  d. 

0. 10 

0.  07 

3.  33 

4.  73 

0.  71 

0.  18 

none 

0.  09 

trace 

trace 

trace 

99.  88 

A2.  II 

1.264 

.131 

.009 

(0.18) 

.003 

.002 

.053 

.050 

.001 

— 

— 

— 

13 

77.  68 

11.  81 

0.  72 

0.51 

0. 18 

0.  72 

2.  96 

5.  00 

0.  27 

0.04 

0. 14 

0.  10 

trace 

100. 13 

A2.  II 

1.295 

.116 

.005 

.007 

.005 

.013 

.048 

.053 

.002 

.001 

— 

14 

74.24 

14.  50 

1.27 

0.  67 

0.  25 

0.  11 

3.00 

3.  66 

2.04 

0.  20 

0.  07 

0.  06 

0. 18 

100. 28 

Al.  I 

1.237 

.142 

.008 

.008 

.006 

.002 

.048 

.039 

.003 

.001 

.001 

.001 

15 

71.33 

11. 18 

3. 96 

1.45 

0.  88 

2.  10 

3.51 

3.  49 

0.92 

0.  74 

0.  12 

trace 

0.32 

0. 03 

100. 16 

Al.  I 

1.189 

.100 

.  025 

.020 

.022 

.038 

.  056 

.037 

.002 

— 

.005 

— 

16 

81.08 

11.45 

n.  d. 

0.21 

trace 

0.  46 

2.30 

3.  64 

0.  60 

99.  74 

A3.  Ill 

1.351 

.112 

— 

.003 

— 

.009 

.037 

.039 

17 

74.  54 

14.  86 

2.  53 

0.  23 

trace 

0.  29 

3.  49 

3.  73 

O'.  87 

trace 

100. 54 

2.  66 

A3.  Ill 

1.242 

.146 

.016 

.003 

— 

.005 

.056 

.039 

— 

PERSALANE  — ALASKOSE. 


127 


ORDER  3.  QUARFELIC.  COLUMBARE— Continued. 

SUBRANG  3.  SODIPOTASSIC.  ALASKOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  41.3 
or  27. 2 
ab  26. 2 

C  1.1 

hy  0.5 
hm  1. 7 

Fox  Islands,  Maine. 

Magruder  and 
Jones. 

G.  0.  Smith, 

Geol.  of  Fox  Islands, 
In.  Diss.,  1896,  p.  51. 

Aporhyolite. 

Q  37.5 
or  32. 2  . 
ab  19. 4 
an  3.9 

C  2.0 

hy  0.8 
nit  1. 2 
hm  2.4 

Monterey,  Franklin 
County,  Pennsyl¬ 
vania. 

L.  G.  Eakins. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  148, 
p.  81,  1897. 

Quartz-por¬ 

phyry. 

Not  described. 

SrO 

trace 

Q  45.2 
or  20. 6 
ab  29. 3 
an  0.8 

C  1.7 

hy  1.1 
mt  0.2 

Sam  Christian  Mine, 
Montgomery 
County,  North 
Carolina. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

A.  J.  S.,  VII,  341, 
1899. 

Rhyolite. 

Q  39.0 
or  20. 0 
ab  27.  8 
an  2. 5 

di  1.8 
wo  3. 1 
mt  5.6 

Waushara,  Wiscon¬ 
sin. 

S.  Weidman. 

S.  Weidman,  Bull.  Ill, 
G.  Nh.  S.  Mich., 
p.  2,  1898. 

Granite. 

S 

SrO 

none 

none 

Q  38.4 
or  32.8 
ab  23. 6 
an  2.8 

C  1.2 

mt  0.4 
hm  0. 3 

Nettie  Mine,  Butte, 
Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

J.  G.  VII, 
p.  739,  1899. 

Aplite. 

Q  38.9 
or  34. 5 
ab  21. 0 
an  2. 5 

C  1.1 

hy  0.  2 
mt  0.  7 

Nettie  Mine,  Butte, 
Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

J.  G.,  VII, 
p.  739, 1899 

Aplite. 

FeS2 

0.11 

Q  36.  7 
or  21. 7 
ab  33. 0 
an  3.9 

C  2.2 

hy  0.3 
mt  0.  2 
hm  1.  6 

Obsidian  Cliff,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  hidings, 

7  A.  R.  U.  S.  G.  S., 

p.  282,  1888. 

Obsidian. 

F 

Li20 

0. 36 
trace 

Q.  37.5 
or  29. 5 
ab  26>  7 
an  3^  9 

mt  1. 7 

Sentinel  Point,  Pikes 
Peak,  Colorado. 

W.  F.  Hille- 
brand. 

E.  B.  Mathews, 

B.  U.  S.  G.  S.,  150, 
p.  177,  1898. 

Biotite-granite. 

Q  37.3 
or  31. 1 
ab  24. 1 
an  3.3 

di  2.7 
hy  1.7 
mt  0.5 

Platte  Canyon,  Jeffer¬ 
son  County,  Colo¬ 
rado. 

H.  N.  Stokes. 

E.  B.  Mathews, 

B.  U.  S.  G.  S.,  148, 
p.  179,  1897. 

Granite. 

Q  35.3 
or  30.  6 
ab24. 1 
an  2.8 

C  1.8 

hy  0.5 
nit  0. 9 

Rosita,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

17  A.  R.  U.  S.  G.  S., 
324,  1896. 

Pitchstone. 

SrO 

LioO 

trace 

trace 

Q  40.1 
or  28. 4 
ab  26.  7 
an  0. 8 

C  1.8 

hy  0.2 
hm  0.9 

Tordrillo  Mountains, 
Alaska. 

H.  N.  Stokes. 

J.  E.  Spurr, 

A.  G.,  XXV, 
p.  231,  1900. 

Alaskite. 

SrO 

LioO 

trace 

trace 

Q  38.3 
or  27. 8 
ab  27. 8 
an  0. 6 

C  2.7 

hy  0.3 
hm  1. 5 

Tordrillo  Mountains, 
Alaska. 

H.  N.  Stokes. 

J.  E.  Spurr, 

A.  G.,  XXV, 
p.  229,  1900. 

Tordrillite. 

Q  39.4 
or  29. 5 
ab  25. 2 
an  3.6 

hy  0.  7 
mt  1.2 

Pyramid  Peak,  Eldo¬ 
rado  County,  Cali¬ 
fornia. 

G.  Steiger. 

W.  Lindgren, 

A.  J.  S.,  Ill, 
p.  306,  1897. 

Granitite. 

so3 

SrO 

LLO 

0. 03 

trace 

none 

Q  42.0 
or  21. 7 
ab  25.2 
an  0. 6 

C  5.4 

hy  0.6 
mt  1. 9 

Near  Willow  Lake, 
Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  192,  1897. 

Rhyolite. 

Zr02 

Cl 

FeSo 
Cod 
Cu  and 

none 

0.09 

0.04 

none 

Pb  none 

Q  33.8 
or  20. 6 
ab  29. 3 
an  1. 9 

di  4.8 
hy  1.0 
mt  4.6 
hmO.  8 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  Contrib: 

Quartz- por¬ 
phyry. 

Q  52.4 
or  21.  7 
ab  19. 4 
an  2.  6 

C  2.8 

hy  0.4i 

Berufiordskard,  Ice¬ 
land. 

C.  W.  Schmidt. 

C.  W.  Schmidt, 

Z.D.G.  G.,  XXXVII, 
p.  776,  1885. 

Liparite. 

Li20 

trace 

Q.  39.7 
or  21.7 
ab  29. 3 
an  1.4 

C  4.7 

mt  0.7 
hm  2. 0 

Botallack,  Cornwall. 

Phillips. 

J.  J.  H.  Teall, 

Brit.  Petr., 
p.  314,  1888. 

Granite. 

128  CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 

CLASS  I.  PERSALANE — Continued. 

RANG  1.  PERALKALIC.  ALASKASE— Continued. 


No. 

Si02 

o 

Fe203 

FeO 

MgO 

CaO 

Na20 

o 

N 

'A 

h.2o+ 

H20— 

co2 

Ti02 

P,o5 

MnO 

BaO 

Sum 

Sp.  gr. 

18 

73.  00 

15.  20 

1.86 

n.  d. 

1.01 

0.  56 

3.44 

4. 14 

1.25 

100. 46 

A3.  Ill 

1.233 

.012 

(.024) 

.025 

.010 

.055 

.044 

19 

77.  20 

12. 11 

1.61 

n.  d. 

trace 

0. 14 

3.  87 

4.  07 

0.  36 

0. 10 

99.46 

A3.  Ill 

1.287 

.119 

.010 

(.020) 

— 

.002 

.062 

.043 

.001 

20 

76.  73 

12.  70 

1.38 

n.  d. 

0. 12 

0.  50 

3. 17 

4.55 

0.  57 

0.  24 

99.  96 

A2.  II 

1.279 

.125 

.009 

(.018) 

.003 

.009 

.051 

.048 

.003 

21 

76.  26 

12.  06 

1. 14 

0.  66 

0.  06 

0.69 

2.  89 

4.50 

0.  71 

0. 40 

0.  25 

99.  62 

A2.  II 

1.271 

.118 

.007 

.009 

.002 

.012 

.047 

.048 

.005 

.004 

22 

72.93 

13.  87 

1.94 

0.  79 

0.  51 

0.  74 

3.  68 

3.  74 

1.18 

0.  50 

0. 14 

100.  02 

A2.  II 

1.216 

.136 

.012 

.011 

.013 

.013 

.060 

.039 

.006 

.002 

23 

75.44 

10.  99 

2.  33 

0.  93 

0.  25 

1.24 

2.  72 

4.98 

1.06 

0.47 

100.  41 

A3.  Ill 

1.257 

.108 

.014 

.013 

.006 

.022 

.043 

.054 

.007 

24 

71.01 

11.86 

3.92 

2.  34 

0.  26 

1.24 

2.  59 

3.  02 

0.93 

0.09 

0.  85 

99.  89 

A2.  II 

1.184 

.116 

.024 

.032 

.007 

.022 

.042 

.032 

.005 

25 

76.  56 

12.  75 

0.  21 

0.61 

0. 14 

0.  46 

3.  38 

4.  85 

0.  68 

99.  64 

A3.  Ill 

1.276 

.125 

.001 

.008 

.004 

.008 

.055 

.052 

26 

74.  82 

13.63 

0.  97 

0.  83 

0.  08 

0.  87 

3.  03 

4.  81 

0.  82 

99.  86 

A3.  Ill 

1.247 

.134 

.006 

.011 

.002 

.006 

.048 

.051 

27 

77.68 

12.95 

0.  96 

0.  37 

0/21 

.030 

3. 18 

4.37 

0.  71 

trace 

100. 73 

A3.  Ill 

1.295 

.127 

.006 

.005 

.005 

.005 

.051 

.047 

— 

28 

77. 48 

11.84 

0.  57 

1.63 

0.  27 

0.  43 

2.  48 

3.  73 

1.  56 

0.  23 

100. 22 

A2.  II 

1.291 

.116 

.004 

.022 

.007 

.008 

.040 

.039 

.002 

29 

76.44 

13.  78 

0.  97 

0.07 

0.34 

0.  75 

2.  76 

3.  50 

0.  38 

0.  33 

0.51 

100.  08 

A2.  II 

1.274 

.135 

.006 

.001 

.009 

.013 

.044 

.037 

.004 

30 

75.  25 

13. 36 

0.  28 

1.23 

•0.02 

0.  65 

2.91 

4.  55 

0.64 

0. 18 

99.  07 

B3.  IV 

1. 254 

.131 

.002 

.017 

.001 

.011 

.047 

.049 

.001 

31 

76. 10 

15.95 

trace 

none 

0. 11 

0.  23 

2.  90 

3. 27 

1.16 

99.  72 

2.  673 

A3.  Ill 

1.268 

.  156 

— 

— 

.003 

.004 

.047 

.035 

32 

77.59 

12.  75 

0.  67 

none 

0. 16 

0.04 

2.  56 

3.  99 

1.54 

0.63 

trace 

trace 

0. 10 

100.  10 

2.511 

A2.  II 

1.293 

.125 

.004 

— 

.004 

.001 

.041 

.042 

.008 

— 

— 

.001 

PERSALANE - ALASKOSE. 


129 


ORDER  3.  QUARFELIC.  COLUMBARE— Continued. 
SUBRANG  3.  SODIPOTASSIC.  ALASKOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

1 

Author’s  name. 

Remarks. 

Q  34.2 
or  24. 5 
ab  28. 8 
an  2.8 

C  4.1 

hy  5.6 

lie  Longue,  Brittany, 
France. 

Not  stated. 

C.  Barrois,  Guide  Exc., 
VIII,  Cong.  G.,  VII, 

p.  21,  woo: 

Aplite. 

Q  38.0 
or  23. 9 
ab  32. 5 
an  0.6 

C  1.2 

hy  2.7 

Kroftkollen,  Dram- 
men,  Norway. 

R.  Mauzelius. 

W.  C.  Brdgger, 

Z.  K.,  XVI, 
p.  77,  1890. 

Quartz-p  r- 
phyry. 

Q  38.2 
or  26. 7 
ab26. 7 
an  2.5 

C  0.7 

hy  2.7 

Hennum,  Norway. 

R.  Mauzelius. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  77,  1890. 

Aplitic  grano- 
phyre. 

Q  40.6 
or  26. 7 
ab  24. 6 
an  3.3 

hy  0.2 
mt  0.9 
il  0.8 
hm  0. 4 

Sundsvall,  Sweden. 

H.  Santesson. 

P.  J.  Holmquist,  Afh. 

Sv.  G.  Und.,  No.  181, 
p.  45,  1899. 

Granite-por¬ 

phyry. 

Dried  at  110°. 

Q  35.0 
or  21. 7 
ab  31.4 
an  3.6 

C  2.5 

hy  1.3 
mt  1. 2 
hm  1. 1 
il  0.9 

Rodo,  Sweden. 

H.  Santesson. 

P.  J.  Holmquist,  Afh. 

Sv.  G.  Und.,  No.  181, 
p.  14,  1899. 

Rapakiwi  gran¬ 
ite. 

Dried  at  110°. 

Q  38.2 
or  30. 0 
ab  22. 5 
an  3.1 

di  1.3 
wo  0. 6 
mt  3. 2 

Kastagropen,  n.  Karl- 
shamn,  Scania, 
Sweden. 

H.  Santesson. 

H.  Biickstrom,  K.  Sv. 
Vet.  Ak.  Handl., 
XXIX,  p.  18,  1897. 

Granulite 

(crushed 

granite). 

Cl 

F 

0. 88 

0.  93 

Q  43.3 
or  17.8 
ab  22. 0 
an  0. 6 

C  4.2 

hy  1.8 
mt  5.6 
ap  2.0 

Block  on  Dago  Is¬ 
land,  Esthonia, 
Russia. 

Schridde. 

J.  .T.  Sederholm, 

T.  M.  P.  M.,  XII, 
p.  21,  1891. 

Rapakiwi  gran¬ 
ite. 

Cl  high? 

F  high? 

Q  36.4 
or,  28. 9 
ab28.8 
an  2.2 

C  1.0 

hy  1.4 
mt  0. 2 

Grosssachsener  Thai, 
Baden. 

Phookan. 

K.  Futterer, 

Mit.  Bad.  G.  L-A.,II, 
p.  41,  1893. 

Granite. 

Q  38.0 
or  28. 4 
ab  25. 2 
an  1.  7 

C  3.0 

hy  0.9 
mt  1.4 

Standenbiihl,  n.  Heil- 
igkreuz,  Baden. 

Beckmann. 

K.  Futterer, 

Mit.  Bad.  G.  L-A.,11, 
p.  41,  1893. 

Granite. 

Q  41.5. 
or  26. 1 
ab  26.  7 
an  1. 4 

C  2.5 

hy  0.5 
mt  1. 4 

Waterfall,  Trvberg, 
Schwartzwald, 
Baden. 

L.  McCay. 

G.  H.  Williams, 

N.  J.  B.  B.,  II, 
p.  609,  1883. 

Quartz-por¬ 

phyry. 

F 

Li20 

trace 

trace 

Q  46.6 
or  21. 7 
ab  21. 0 
an  2.2 

C  3.0 

hy  3.1 
mt  0.9 

Epprechtstein,  Fich- 
telgebirge,  Bavaria. 

A.  Bottger. 

F.  v.  Sandberger, 

Sb.  Munch.  Ak., 
XVIII,  p.  466,  1888. 

Lithionite- 

granite. 

FeS2 

0.25 

Q  46.8 
or  20. 6 
ab  23. 2 

C  5.4 

hy  0.8 
mt  0.  2 
hm  0.  8 
ap  1.3 

Lindenstein,  Hesse. 

R.  Marzahn. 

Chelius  and  Klemm, 
Erl.G.Kt.,  Hessen,  IV, 
p.  42,  1896. 

Granite. 

LioO 

trace 

Q  38.5 
or  27.2 
ab  24. 6 
an  3. 1 

C  2.4 

hy  2. 0 
mt  0.5 

Schneeberg,  Fichtel- 
gebirge,  Bavaria. 

A.  Bottger. 

F.  v.  Sandberger, 

Sb.  Munch.  Ak., 
XVIII,  p.  466,  1888. 

Granite. 

•• 

Q  46.4 
or  19. 5 
ab  24. 6 
an  1. 1 

C  7.1 

hy  0.3 

Omeo,  Victoria,  Aus¬ 
tralia. 

A.  W.  Howitt. 

A.  W.  Howitt, 

T.R.Soc.  Viet.,  XXIV, 

p. 110, 1888. 

Muscovite- 

granite. 

Dried  at  100°. 
HjjO-O.18. 

so3. 

0. 07 

Q  47.3 
or  23. 4 
ab  21.  5 
an  0.3 

C  4.2 

hy  0.4 
hm0.7 
ru  0.6 

Omahu,  Hauraki, 
Auckland  Province, 
New  Zealand. 

P.  Holland. 

P.  Holland, 

Q.  J.  G.  S.,  LV, 
p.  467,  1899. 

Rhyolite. 

14128— No.  14—03 


9 


130 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 
RANG  1.  PERALKALIC.  ALASKASE. 


No. 

Si02 

ai2o3' 

FeA 

FeO 

MgO 

CaO 

Xa.,0 

k2o 

H,0+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

75. 19 

13.  77 

0.  61 

1.37 

0.  09 

0.  68 

3.  83 

3.  33 

0.  65 

none 

none 

trace 

99.83 

Al.  I 

1. 253 

.135 

.004 

.019 

.002 

.012 

.061 

.035 

— 

— 

— 

2 

74.51 

c  » 

00 

-t 

iH 

1.09 

trace 

0.  47 

0.81 

4.  38 

2.  72 

0.  92 

none 

trace 

none 

99.  99 

Al.  I 

1.242 

.1  ^ 

.007 

— 

.012 

.014 

.071 

.029 

— 

— 

— 

3 

76.  00 

14.  88 

0.  C5 

0. 10 

0.06 

0. 19 

3.52 

2.  77 

1.42 

0:20 

none 

0.  04 

0.11 

trace 

trace 

99.  94 

Al.  I 

1.266 

.146 

.004 

001 

.002 

.003 

.056 

.  030 

— 

.001 

— 

— 

4 

73.  62 

12.  22 

2.08 

4.  03 

0.  26 

0.  34- 

8.  57 

2.  57 

0.  40 

99.  09 

BA  IV 

1.-227 

.120 

.013 

.  056 

.007 

.006 

.058 

.027 

5 

74.  39 

15.  55 

1.35 

n.  d. 

0.  33 

0.  48 

3.  79 

2. 14 

1. 18 

0.  22 

99.  43 

2.  72 

B3.  IV 

1.240 

.  153 

.009 

(.018) 

.008 

.009 

.  -161 

.  022 

.003 

6 

74.  09 

12.  48 

2. 15 

n.  d. 

1.08 

0.  60 

5.01 

1.52 

2.  42 

99.35 

Bl.  V 

1.235 

.122 

.014 

(.028) 

.027 

.011 

.080 

.016 

7 

72.  78 

14. 15 

0. 17 

XL  d. 

trace 

0.82 

4.51 

2.  48 

4.  35 

99.  26 

B3.  IV 

1.213 

.139 

.001 

(.002) 

— 

.011 

.072 

.026 

RANG  1.  PERALKALIC.  ALASKASE. 


1 

77.  32 

11.62 

1.57 

0.  69 

0.80 

0.  62 

5.  81 

0.  99 

0.  65 

0.34 

0. 10 

100. 51 

A2.  II 

1.289 

.  114 

.010 

.010 

.020 

.011 

.093 

.010 

.004 

.001 

2 

80.  42 

9.  22 

1.22 

0.  62 

0.  34 

0.  86 

4.  50 

0.62 

0.  66 

0.  98 

0.  06 

0. 06 

99.  67 

2.  652 

A2.  II 

1.340 

.090 

.007 

.008 

.009 

.015 

.072 

.006 

.001 

— 

3 

QO  C  — 

no.  Oi 

8.01 

2. 04 

n.  <1. 

trace 

0.50 

4.  53 

0. 16 

1. 10 

99.91 

2.  624 

A3.  Ill 

1.393 

.078 

.013 

(.026) 

— 

.009 

.072 

.002 

RANG  2.  DOMALKALIC.  ALSBACHASE. 


1 

76.  41 

14.  42 

0.  48 

0.  74 

0.  24 

1.43 

0.  63 

3.88 

1.02 

1.40 

100. 65 

A3.  Ill 

1.273 

.141 

.003 

.010 

.006 

.025 

.009 

.041 

2 

73.  07 

11. 78 

2.  30 

n.  d. 

0.39 

2.  02 

1. 19 

6.  84 

2.  24 

99.  83 

A4.  IV 

1. 218 

.115 

.011 

(.028) 

.010 

.036 

.019 

.072 

3 

73.15 

16.  74 

0.  78 

n.  d. 

0.21 

0.  90 

1. 13 

4.58 

2.  58 

100.  92 

2.  436 

A3.  Ill 

1.219 

.164 

.005 

(.010) 

.005 

.(16 

.018 

.049 

4 

72.  68 

15.  62 

0.  95 

n.  d. 

trace 

0. 63 

1. 17 

4.30 

2.  90 

100. 02 

2.  229 

A3.  Ill 

1.211 

.153 

.006 

(.012) 

— 

.011 

.019 

.046 

5 

70.  59 

17.  62 

1.  74 

n.  d. 

trace 

1.96 

0.  80 

5.  10 

1.61 

99.  64 

2.292 

A3.  Ill 

1.177 

.173 

.011 

(.022) 

— 

.035 

.013 

.055 

PERSALANE - MIHALOSE. 


131 


ORDER  3.  QUARFELIC.  COLUMB ARE— Continued. 
SUBRANG  4.  DOSODIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SOs 

LioO 

0. 29 

0.02 

Q  88.2 
or  19.5 
ab  32. 0 
an  3.3 

C  2.  S 

h.v  2.2 
mt  0.9 

Madison  Plateau,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.  U.S.G.  S.,  XXXII, 
p.  426,  1899. 

Rhyolite. 

so3 

Li.O 

0.24 

0. 02 

Q  30.1 
or  10. 1 
ab  37. 2 
an  3.9 

C  3.3 

hy  1.2 
hml.l 

Echo  Peak,  Yellow¬ 
stone  National  Park. 

,T.  E.  Whitfield. 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  65,  1899. 

Dacite-por- 

phyrv. 

so3 

Cl 

F 

trace 

trace 

trace 

Q  44.0 
or  10. 7 
ab  29. 3 
an  0.8 

C  5. 8 

mt  0.2 
hm  0.5 

Grizzly  Hill,  Plumas 
County,  California. 

H.  N.  Stokes. 

II.  W.  Turner, 

1  /  th  A.  R.  I  .  S.  ( i .  S. , 

I,  p.  721,  1896. 

Muscovite- 

granite. 

Q  39.3 
or  14.0 
ab  30. 4 
an  1.7 

C  3.0 

hy  6.4 
mt  3.0 

Pine  Mountain,  South 
Mountain,  Pennsyl¬ 
vania. 

C.  H.  Hender¬ 
son. 

C.  H.  Henderson, 

T.  A.  Inst.  Min.  Eng., 
XII,  p.  90,  1884. 

Rhyolite. 

Q  41.9 
or  12. 2 
ab82.2 
an  2.5 

C  0.2 

hy  3.2 

Crosby,  Isle  of  Man. 

Holland? 

Dickson  and  Holland, 

Pr.  Liverp.  G.  Soc.,  VI, 
Pt.  I,  p.  126,  1889. 

Microgranite. 

■  Q  34.9 
or  8. 9 
ab  41. 9 
an  3.1 

C  1.5 

hy  6. 4 

St.  George  Monastery, 
Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

Exc.  VII  Cong.  G.  Int. , 
XXXIII,  p.  27, 1897. 

Keratophyre. 

Q  35.8 
or  14.  5 
ab  37.  7 
an  3.9 

C  2.8 

Marekanka  River, 
Kamchatka. 

P.  Wenjukoff. 

P.  Wenjukoff, 
cf.  N.  J.,  1891, 1,281. 

Perlite. 

SUBRANG  5.  PERSODIC.  WESTFHALOSE. 


Q  37. 7 
or  5. 6 
ab  48. 7 
an  3.1 

hy  2.0 
mt  1.4 
hmO.  4 
il  0. 6 

Gubben,  n.  Roddo, 
Sweden. 

H.  Santesson. 

P.  J.  Holmquist, 

Afh.  Sver.  G.  End. 

No.  181,  p.  83,  1899. 

Granite. 

Dried  at  110°. 

so3 

Org. 

pO 

O  O 
-J  4- 

Q  50.2 
or  3.3 
ab  37.  7 
an  3. 3 

di  0.7 
hy  0.6 
mt  1.9 

Near  Wibbeke,  West¬ 
phalia. 

Jacobs. 

0.  Miigge, 

N.  J.  B.  B.,  VIII, 
p.  632,  1893. 

Quartz -kerato¬ 
phyre. 

Dried  at  105°. 
S03  from  FeS2. 

S 

trace 

Q  54.6 
or  1.1 
ab  37. 7 
an  1.1 

di  1.3 
hy  2.8 

Hohlinden  Quarry, 
Wiebelsaal,  West¬ 
phalia. 

Bonier. 

O.  Miigge, 

N.  J.  B.  B.,  VIII, 
p.  616,  1893. 

Quartz-kerato- 

phvre. 

Dried  at  105°. 

SUBRANG  2.  DOPOTASSIC.  MIHALOSE. 


Q  54.6 
or  22. 8 
ab  4.7 
an  7.0 

C  6.7 

hy  1.5 
mt  0.7 

Ivaserngrat,  Wind- 
giille  Mountains, 
Switzerland. 

C.  Schmidt. 

C.  Schmidt, 

N.  J.  B.  B.,  IV, 
p.  432,  1886. 

Porphyry. 

Not  fresh. 

Q  34.4 
or  40. 0 
ab  10. 0 
an  6.7 

di  2.9 
hy  3.3 

McClellan  Peak, 
Washoe,  Nevada. 

F.  A.  Gooch. 

Hague  and  Iddings, 

B.  U.  S.  G.  S.,  17, 
p.  33,  1885. 

Rhyolite. 

Near  dellenose. 

so3 

FeS2 

0.12 

0.73 

Q  46.2 
or  27. 2 
ab  9.4 
an  4.4 

C  8.3 

hy  1.8 
pr  0.7 

Nagy-Mihaly,  Hun¬ 
gary. 

K.  Murakozy. 

K.  Murakozy, 

F.  K.,  XXII, 
p.  54,  1892. 

Rhyolite. 

• 

S03 

FeSo 

0.22 

1.55 

Q  47. 2 
or  26. 6 
ablO.O 
an  3. 1 

C  7.9 

hy  1.6 
pr  1. 6 

Nagy-Mihaly,  Hun¬ 
gary. 

K.  Murakozy. 

K.  Murakozy, 

F.  K.,  XXII, 
p.  54,  1892. 

Rhyolite. 

• 

so3 

FeSa 

0.07 

0. 15 

Q  40.6 
or  30. 6 
ab  6.8 
an  9.7 

C  7.1 

hy  2.9 

Nagv-Mihaly,  Plun- 
gary. 

K.  Murakozy. 

K.  Murakozv, 

F.  K.,  XXII, 
p.  54,  1892. 

Rhyolite. 

132 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 


RANG  2.  DOMALKALIC.  ALSBACHASE— Continued. 


No. 

Si02 

ALA 

FeA 

FeO 

MgO 

CaO 

Na20 

o 

M 

w 

h2o+ 

K 

o 

1 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

6 

74.81 

13.87 

1.68 

n.  d. 

0.  52 

1.49 

1.  46 

4.  68 

1.48 

99.  99 

2.541 

A3.  Ill 

1.244 

.136 

.011 

(.022) 

.013 

.027 

.  023 

.060 

16° 

7 

74.58 

13.  31 

1.31 

n.  d. 

0.  54 

1.48 

1.34 

4.  73 

2.84 

100. 13 

2.505 

A3.  Ill 

1.243 

.130 

.008 

(.016) 

.014 

.027 

.021 

.050 

19° 

8 

73.03 

13.  51 

3. 12 

n.  d. 

0.26 

1.61 

1.52 

4.  87 

2.03 

99.  95 

2.563 

A4.  IV 

1.217 

.132 

.020 

(.040) 

.007 

.029 

.024 

.051 

18° 

9 

72.  98 

14.  22 

2.  86 

n.  d. 

0.  33 

1.35 

1.88 

5.  61 

0.  89 

100. 12 

% 

A4.  IV 

1.216 

.139 

.018 

(.  036) 

.008 

.024 

.030 

.060 

RANG  2.  DOMALKALIC.  ALSBACHASE. 


1 

71.45 

14.  36 

2.07 

2.  78 

1. 17 

1.53 

1.95 

3.  28 

1.30 

99.94 

AS.  Ill 

1.191 

.142 

.013 

.039 

.029 

.021 

.031 

.035 

2 

74.  34 

12.97 

0.  75 

0.  54 

0.  86 

0.  85 

2.49 

4.  72 

1.11 

1.03 

none 

0. 18 

0.07 

trace 

0.  07 

100.  06 

Al.  I 

1.239 

.127 

.005 

.007 

.022 

.015 

.040 

.050 

.002 

— 

— 

— 

3 

75.  89 

12.  27 

1. 12 

1.37 

0.  29 

0.  86 

3.  23 

3.42 

0.  82 

0.50 

none 

none 

100.  06 

Al.  I 

1.265 

.120 

.007 

.019 

.007 

.015 

.052 

.036 

.006 

— 

— 

4 

75.34 

12.51 

0.  42 

1.55 

0.  32 

1.07 

3.31 

4.17 

0.86 

none 

none 

0.  07 

100.  04 

Al.  I 

1.256 

.122 

.003 

.022 

.008 

.020 

.053 

.045 

— 

— 

.001 

5 

74.60 

13.  41 

1.28 

0.  30 

0.  26 

1.08 

3.38 

4.  50 

0.  85 

0. 16 

0.  03 

0.  06 

0.11 

100.  02 

Al.  I 

1.243 

.131 

.008 

.004 

.007 

.020 

.055 

.048 

.002 

— 

.001 

.001 

6 

70.  29 

11.83 

1.30 

2.08 

1.24 

2.  30 

2.  68 

3.  05 

1.35 

0. 10 

3.  25 

0.  29 

0.07 

0. 12 

0.  07 

100.  02 

Al.  I 

1.172 

.116 

.008 

.030 

.031 

.041 

.042 

.033 

.004 

— 

.002 

7 

74.65 

14. 11 

1.08 

0.  29 

0.  20 

0.  80 

2.  81 

4.59 

1.40 

0.  21 

trace 

0.11 

0.  08 

100.  33 

Al.  I 

1.244 

.138 

.007 

.004 

.005 

.014 

.045 

.049 

.003 

— 

.002 

8 

73.  62 

14.  24 

0.  93 

0.  67 

0.  33 

1.07 

3.  25 

4.  28 

1.29 

0.  21 

0.02 

0. 08 

0. 10 

100.09 

Al.  I 

1.227 

.140 

.006 

.009 

.008 

.020 

.052 

.046 

.003 

.001 

.001 

9 

73.81 

13.  93 

0. 93 

0.  46 

0.  72 

0.  88 

2.  80 

4.  81 

0.  74' 

trace 

0.  62 

0.  06 

0.  24 

0.01 

100.  33 

Al.  I 

1.230 

.136 

.006 

.006 

.018 

.016 

.045 

.051 

.008 

— 

.003 

10 

75.93 

13.  26 

1.47 

0.  68 

none 

1.11 

3.13 

3. 19 

0.44 

0.  51 

trace 

trace 

99.  72 

A3.  Ill 

1.266 

.130 

.009 

.010 

— 

.020 

.050 

.034 

— 

— 

11 

72.11 

13.  71 

0.29 

0.90 

0.  44 

1.44 

3.  22 

3.  33 

4. 19 

99.  63 

2.  346 

A3.  Ill 

1.202 

.134 

.002 

.012 

.011 

.026 

.051 

.035 

12 

76.91 

12.  52 

0.  45 

1.04 

0.  32 

0.  75 

3.  21 

3.50 

0.  72 

99.  42 

A3.  Ill 

1. 282 

.123 

.003 

.014 

.008 

.013 

.052 

.037 

PERSALANE - TEHAMOSE. 


133 


ORDER  3.  QUARFELIC.  COLUM BARE— Continued. 
SUBRANG  2.  DOPOTASSIC.  MIHALOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  43.0 
or  27. 8 
ab  12. 1 
an  7.5 

C  3.7 

hy  4.2 

Briga,  Piedmont. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Ac.  Gioen. ,  XVIII, 
p.  12,  1885. 

Porphyry. 

Q  44.0 
or  27. 8 
abll.O 
an  7.5 

C  3.3 

hy  3.5 

Arolo,  Lago  Mag- 
giore,  Piedmont. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Ac.  Gioen. ,  XVIII, 
p.  9,  1885. 

Porphyry. 

Q  39.7 
or  28. 4 
abl2. 6 
an  8. 1 

C  2.9 

hy  6.0 

Ponte  di  Grata,  n. 
Gozzano,  Piedmont. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Ac.  Gioen.,  XVIII, 
p.  14,  1885. 

Porphyry. 

Q,  35.0 
or  33. 4 
ab  15. 7 
an  6.7 

C  2.6 

hy  5.5 

Ben  Kassem,  n. 
Menerville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Rit¬ 
ter,  Mem.  Soc.  Phys., 
Genev.,  XXXIII, 
p.  26,  1900. 

Liparite. 

SUBRANG  3.  SODIPOTASSIC.  TEHAMOSE. 


LioO 

trace 

Q  40.9 
or  19. 5 
ab  16. 2 
an  8.1 

C  4.8 

hy  6.3 
mt  3. 0 

Sykesville,  Maryland. 

W.  F.  Hille- 
brand. 

G.  H.  AVilliams, 

15  A.  R.  U.  S.  G.  S., 
p.  672,  1895. 

Biotite-granite. 

ZrOo 

so3 

Cl 

SrO 

LioO 

0. 05 

0. 03 
none 
trace 
trace 

Q  38.7 
or  27.8 
ab  21.0 
an  4.2 

C  2.2 

hy  2.4 
mt  1.2 

Hyde  Park  Dike, 

Butte  District, 
Montana. 

H.  N.  Stokes. 

AV.  H.  AVeed, 

B.  U.  S.  G.  S.,  168, 
p.  119,  1900. 

Rhyolite. 

S03 

LioO 

0. 28 

0. 01 

Q  41.6 
or  20. 0 
ab  27. 2 
an  4.  2 

C  1.7 

hy  1.6 
mt  1.6 
il  0.9 

Mount  Sheridan, 
Yellowstone  Na¬ 
tional  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  426,  1899. 

Rhyolite. 

so3 

Li20 

0.42 

trace 

Q  36.1 
or  25. 0 
ab  27. 8 
an  5.6 

C  0.4 

hy  3.3 
mt  0.7 

Elephant’s  Back, 
Yellowstone  Na¬ 
tional  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.S.G.  S.,  XXXII, 
p.  426,  1899. 

Rhyolite. 

S03  for  S. 

SrO 

Li.,0 

none 

trace 

Q  34.7 
or  26.  7 
ab  28. 8 
an  5.6 

C  0.8 

hy  0.7 
mt  0. 9 
hm  0.6 

Clipper  Mine,  Shasta 
County,  California. 

AV.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  192,  1897. 

Rhyolite. 

Dried  at  110°. 

SrO 

Li«0 

trace? 

none 

Q  36.1 
or  18. 3 
ab  22. 0 
an  11. 4 

hy  4. 4 
mt  1. 9 
il  0.6 

Near  Buena  Vista 
Peak,  Amador 
County,  California. 

W.  F.  Hille- 
brand. 

H.  AV.  Turner, 

14  A.  R.  U.  S.G.S.,II, 
p.  484,  1894. 

Quartz-porph  y- 
ry-schist. 

Not  fresh. 

SrO 

LioO 

trace 

none 

Q  38.8 
or  27.2 
ab23.6 
an  3.9 

C  3.1 

hy  0.5 
mt  0.9 
il  0.5 

Deer  Creek  Meadows, 
Tehama  County, 
California. 

AV.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  192,  1897. 

Rhyolite. 

Dried  at  110°. 

SrO 

LioO 

trace 

none 

Q  35.5 
or  25. 6 
ab  27. 2 
an  5. 6 

C  2.2 

hy  0.3 
mt  1.4 
il  0.5 

Slate  Creek,  Tehama 
County,  California. 

AV.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148,- 
p.  192,  1897. 

Rhyolite. 

Dried  at  110°. 
Near  tosca- 
nose. 

ZrOo 

Cl 

FeSo 

CoO 

Cu 

Pb 

trace 

0.02 

0.02 

0. 28 

trace 

none 

Q  36.2 
or  28. 4 
ab  23. 6 
an  4.4 

C  2.4 

by  1.8 
hm  0. 9 
il  0.9 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contr. 

Granite. 

Q  43.3 
or  18.9 
ab26.  2 
an  5.6 

C  2.7 

mt  2.2 

Tamaya,  Chile. 

C.  Schwarz. 

v.  Groddeck, 

Z.  D.  G.  G.,  XXXIX, 
p.  249,  1887. 

Quartz-p  or- 
phyry. 

Q  36.8 
or  19. 5 
al)  26.7 
an  7.2 

C  2.2 

hy  2.4 
mt  0.5 

Faro  del  Caralete, 

Cabo  de  Gata, 

Spain. 

A.  Osann. 

A.  Osann, 

Z.  I).  G.  G.,  XLIII, 
p.  693,  1891. 

Liparite. 

Q  42.2 
or  20.6 
ab  27. 2 
an  3. 6 

C  2.1 

hy  2. 2 
mt  0.7 

Grosssachsener 

Thai,  Baden. 

Dieckmann. 

Iv.  Futterer, 

Mt.  Bad.  G.  L-A.,  II, 
p.  41,  1893. 

Granite. 

134 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  PERSALANE— Continued. 


RANG  2.  DOMALKALIC.  ALSBACHASE— Continued. 


No. 

SiO, 

AlA 

Fe203 

FeO 

MgO 

CaO 

Na2G 

k4o 

H20-f 

tf2o- 

C02 

TiG2 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

13 

72.37 

15. 18 

1.  75 

0.  71 

1.54 

2.01 

2.12 

3.  54 

1.11 

100.  33 

A3.  Ill 

1.206 

.148 

.011 

.010 

.039 

.036 

.034 

.037 

14 

72. 15 

13.  56 

1.29 

1.48 

1.52 

2.  25 

2.  74 

3.  55 

1. 11 

99.  65 

A3.  Ill 

1.203 

.133 

.008 

.021 

.038 

.040 

.044 

.038 

15 

76. 12 

12.18 

1.21 

0.  72 

1.  12 

1.  54 

2.  55 

3.21 

1.51 

100. 16 

A3.  Ill 

1. 209 

.119 

.007 

.010 

.028 

.028 

.041 

.034 

16 

75.  21 

12. 15 

1.74 

0.  38 

0.  89 

1.23 

2.  88 

4.  25 

0.  92 

99.  65 

A3.  Ill 

1. 254 

.119 

.011 

.005 

.022 

.021 

.047 

.046 

17 

74.41 

13.  65 

0.  65 

0.  95 

0.  87 

1. 16 

2.56 

3.  98 

1.50 

99.  73 

A3.  Ill 

1.240 

.134 

.004 

.014 

.  022 

.021 

.041 

.042 

18 

72.  04 

15.98 

1.08 

1.  70 

1.08 

2. 11 

2.  22 

3. 45 

0.  66 

100.  32 

A3.  Ill 

1. 201 

.156 

.007 

.024 

.027 

.038 

.035 

.037 

19 

74.  80 

12.  60 

1.53 

0.  83 

0. 17 

0.  79 

2.54 

4.  83 

1.08 

99. 17 

B3.  IV 

1.247 

.123 

.009 

.011 

.004 

.014 

.040 

.051 

20 

71.91 

13.  51 

2. 14 

1. 14 

1.  18 

2. 19 

1.58 

3.  72 

2.39 

trace 

99.  76 

2.  618 

A3.  Ill 

1.199 

.132 

.013 

.015 

.030 

.039 

.026 

.039 

18° 

21 

67. 12 

20.  12 

3.  71 

0.  28 

0.  82 

1.  79 

1.53 

3.  38 

1.01 

0.  03 

99.  84 

2.  701 

A3.  Ill 

1.119 

.197 

.023 

.004 

.021 

.032 

.024 

.036 

22 

68.  8 

14.9 

0.9 

4.3 

1.  1 

1.9 

2.7 

2.8 

2.0 

99.4 

B3.  IV 

1.147 

.146 

.006 

.060 

.027 

.034 

.043 

.030 

23 

72. 10 

15.  80 

2.71 

n.  d. 

1.27 

1.99 

3. 10 

3.12 

0.  50 

100.  59 

A4.  IV 

1.202 

.  155 

.017 

(.034) 

.032 

.036 

.050 

.033 

24 

76.15 

13.  26 

1.38 

n.  d. 

0.48 

1.22 

2. 18 

4. 17 

0.  35 

trace 

99.  99 

2.  516 

A3.  Ill 

1.283 

.130 

.009 

(.018) 

.012 

.021 

.035 

.045 

— 

25 

77.94 

11.  78 

1.21 

n.  d. 

0.32 

0.  74 

1.56 

4.17 

1.91 

99.  63 

2.557 

A3.  Ill 

1.299 

.115 

.007 

(.014) 

.008 

.012 

.026 

.044 

17° 

26 

73.  64 

15.  07 

n.  d. 

1.63 

0.  65 

2.  63 

3.06 

2.  91 

0.  54 

0.  34 

trace 

100.  57 

A3.  Ill 

1.226 

.147 

— 

.022 

.016 

.047 

.049 

.031 

.002 

— 

27 

70.  57 

16.  13 

3.52 

n.  d. 

0.99 

1.  79 

2.  48 

3.  74 

0.  87 

100.  09 

A4.  IV 

1.176 

.158 

.022 

(.044) 

.025 

.032 

.040 

.039 

28 

73.  87 

15.  00 

1.30 

n.  d. 

0. 19 

1.46 

3.  02 

4.  33 

0.  66 

99.  83 

A3.  Ill 

1. 231 

.147 

.008 

(.016) 

.005 

.027 

.048 

.046 

29 

72. 13 

13.  28 

1.38 

n.  d. 

0.  40 

1.05 

3.60 

3.  58 

4.  75 

100. 17 

A3.  Ill 

1.202 

.130 

.009 

(.018) 

.010 

.019 

.  058 

.038 

_ 

PERSALANE - TEHAMOSE. 


135 


ORDER  3.  OUARFELIC.  COLUMBARE— Continued. 

SUBRANG  3.  SODIPOTASSIC.  TEHAMOSE-Continued. 


Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  nan 

Q  40.1 
or  20. 6 
ab  17.8 
an  10. 0 

C  4.2 

hy  3.9 
rnt  2.5 

Abruzzen,  Riesen- 
gebirge,  Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  163,  1899. 

Granitite. 

Q  34.8 
or  21. 1 
ab  23. 1 
an  11.1 

C  1.1 

hy  5. 6 
int  1.9 

Heidelberg.  Ries- 
engebirge, 

Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  164,  1899. 

Granitite. 

Q  43.9 
or  18. 9 
ab  21. 5 
an  7.8 

C  1.6 

hy  3.2 
mt  1.6 

Abruzzen,  Riesenge- 
birge,  Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  191,  1899. 

Granite. 

Q  37.9 
or  25.6 
ab  24. 6 
an  5. 8 

C  0.5 

hy  2.2 
mt  1. 2 
hml.O 

Abruzzen,  Riesenge- 
birge,  Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  191,  1899. 

Granite. 

Q  40.1 
or  23. 4 
ab  21. 5 
an  5.8 

C  3.1 

hy  3.  3 
mt  0.9 

Hohesrad,  Riesen- 
gebirge,  Silesia. 

1 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  190,  1899. 

Granite 

(graphic). 

Q  38.9 
or  20.  6 
ab  18. 3 
an  10. 6 

C  4.7 

hy  4.  9 
mt  1. 6 

Sauberg,  Riesenge- 
birge,  Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  167,  1899. 

Granitite. 

Q  40.0 
or  28.4 
ab  21. 0 
an  3.9 

C  1.8 

hy  0.7 
mt  2.1 

Kiiserngrat,  Wind- 
giille  Mountains, 
Switzerland. 

J.  Mai. 

C.  Schmidt, 

N.  J.  B.  B.,  IV, 
p.  432,  1886. 

Porphyry. 

Q,  42.1 
or  21. 7 
ab  13.  6 
an  10. 8 

C  2.9 

hy  3.  0 
mt  3. 3 

Invorio  Superiore, 
Lago  d’Orta,  Pied¬ 
mont. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Ac.  Gioen.  Catan. 
XVIII  (21),  1885. 

Porphyry. 

Q  40.4 
or  20. 0 
ab  12.6 
an  8.9 

C  10.7 

hy  2. 1 
mt  0.  9 
hm  3. 0 

Staindrop  Rig,  Chev¬ 
iot  Hills,  Scotland. 

I.  Macadam. 

H.  Kynaston, 

Tr.  Edinb.  G.  Soc., 
VII,  p.  394,  1899. 

Granite. 

Q  33.6 
or  16.  7 
ab  22. 5 
an  9.5 

C  4.0 

hy  9. 9 
mt  1.4 

Arenig,  Wales. 

J.  H.  Player. 

J.  J.  H.  Teall, 

Br.  Petr., 
p.  339,  1888. 

Ortho-felsite. 

Q  34.0 
or  18.3 
ab  26. 2 
an  10.0 

C  3.7 

hy  7.8 

Querigut,  Pyrenees, 
France. 

A.  Pisani. 

A.  Lacroix, 

B.  S.C.  G.  Fr., 

XI,  No.  71,  p.  31, 1900. 

Granite. 

Q  43.9 
or  25. 0 
ab  18. 3 
an  5. 8 

C  3.0 

hy  3.6 

Bohnstadtberg,  Hesse, 
Germany. 

F.  W.  Schmidt. 

C.  Chelius, 

Erl.  G.  Kte.  Hesse, 

I,  Bl.  Rossdorf, 
p.  54,  1886. 

Granite. 

Q  50.0 
or  24. 5 
ab  13. 6 
an  3.3 

C  3.3 

hy  2. 6 

Buccione,  Lago  d’Orta, 
Piedmont. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Ac.  Gioen.  Catan. 
XVIII  (16),  1885. 

“Porphyry.’ 

Q  36.8 
or  17. 2 
ab  25. 7 
an  13. 1 

C  2.0 

hy  4. 5 

Monte  della  Fossa, 
Vulcano,  H£olian. 
Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min.,  Ill, 
p.  104,  1892. 

Rhyolite. 

Q  34.3 
or  21. 7 
ab21.0 
an  8.  9 

C  4.8 

hy  8.3 

W.  of  Karpi,  Orivesi, 
Finland. 

H.  Berghell. 

J.  J.  Sederholm, 

B.  C.  G.  Finl.,  No.  6, 
p.  151,  1897. 

Granite. 

Q  35.5 
or  25. 6 
ab  25. 2 
an  7. 5 

C  2.7 

hy  2.7 

Sidi  Zerzor,  n.  Mener- 
ville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and 
Ritter,  Mem.  Soc. 
Phys.,  Genev., 

XX  XIII,  p.  115, 1900. 

Liparite. 

Q  33.6 
or  21. 1 
ab  30. 4 
an  5. 3 

C  1.5 

hy  3.4 

Cape  Marsa,  n.  Me- 
nerville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and 
Ritter,  Mem.  Soc. 
Phys.  Genev., 
XXXIII,  p.  77,  1900. 

Liparite. 

Remarks. 


Near  riesenose. 


A1203  high? 


I  One  decimal. 


Calc,  to  100%? 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS 


it 


36 


CLASS  I.  PERSALANE — Continued. 


RANG  2.  DOMALKALIC.  ALSBACHASE. 


No. 

Si02 

A1203 

FeX>3 

FeO 

MgO 

CaO 

Na2() 

k2o 

h2o+  h2o- 

O 

o 

hi 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

78.  28 

9.  96 

1.85 

1.  78 

0.  95 

1.68 

2.  73 

1.35 

0.  83 

0.12 

0.  70 

0.11 

0.  08 

0.  02 

100. 44 

Al.  I 

1.305 

.098 

.012 

.025 

.024 

.030 

.043 

.015 

.009 

.001 

.001 

2 

76.  20 

14.  41 

n.  d. 

1.49 

0.  65 

2. 19 

3. 32 

2.44 

100. 70 

2. 65 

A3.  Ill 

1.270 

.141 

— 

.021 

.016 

.039 

.053 

.025 

3 

76.  54 

13.  82 

1.62 

n.  d. 

0.  01 

0.  85 

4.  32 

2.  31 

0.  20 

99.  67 

A3.  Ill 

1.276 

.135 

.010 

(.020) 

— 

.015 

.069 

.024 

4 

69.54 

17.  95 

2. 50 

0.  22 

0.50 

1.80 

4.30 

1.21 

1.96 

none 

none 

none 

100.  35 

A2.  II 

1.159 

.176 

.015 

.003 

.013 

.032 

.069 

.013 

— 

* 

— 

5 

74.  84 

14.  05 

0. 17 

0.  31 

trace 

1.  57 

3.  66 

3. 14 

2.  33 

100.  07 

2.  38 

A3.  Ill 

1.247 

.138 

.001 

.004 

— 

.029 

.059 

.033 

' 

17° 

6 

79.  49 

11.60 

0. 32 

0.  49 

0. 09 

1.64 

4.  04 

1.52 

0.  68 

none 

99.  88 

A3.  Ill 

1.325 

.114 

.002 

.007 

.002 

.029 

.065 

.016 

7 

68. 15 

15.00 

1.18 

0.  60 

0.87 

1.91 

3. 13 

0.  96 

8.  70 

100.  50 

2.  497 

A3.  Ill 

1.136 

.147 

.007 

.008 

.022 

.034 

.050 

.010 

8 

76.  68 

14. 49 

n.  d. 

1.09 

0.  84 

1.53 

3.  92 

1.20 

0.  36 

trace 

100. 11 

A3.  Ill 

1.278 

.142 

— 

.015 

.021 

.027 

.063 

.013 

— 

9 

75.  88 

14.  75 

trace 

trace 

0. 16 

2.  08 

3.  78 

2.  60 

0.  20 

none 

0.50 

trace 

0.04 

99.  99 

A2.  II 

1.265 

.145 

— 

— 

.004 

.038 

.061 

.027 

.006 

— 

.001 

10 

72.  49 

15.  82 

1.18 

0. 15 

0.  76 

2.  02 

4.  03 

2.  26 

0.35 

0. 14 

0.  56 

0. 01 

0.05 

99.82 

A2.  II 

1.208 

.155 

.007 

.002 

.019 

.036 

.064 

.024 

.007 

— 

.001 

11 

74. 13 

12.  61 

2.  87 

0.86 

0.  23 

1.60 

4.  55 

2. 13 

0.  66 

0. 16 

99.80 

A3.  Ill 

1.236 

.123 

.018 

.012 

.006 

.029 

.074 

.022 

.002 

12 

72.  63 

13. 49 

2.17 

1.04 

0.  89 

1.  65 

3.  86 

2.  62 

0.  31 

0.  23 

0.  07 

0.  26 

99.  26 

B2.  Ill 

1.211 

.132 

.014 

.014 

.022 

.030 

.062 

.027 

.001 

.002 

13 

77.  35 

13.16 

0.  73 

0.  78 

0.  99 

1.09 

2. 67 

2. 35 

1.40 

100.  52 

A3.  Ill 

1.289 

.129 

.004 

.011 

.025 

.020 

.043 

.025 

14 

74.  65 

12.64 

2.  26 

0.  85 

1.01 

2. 12 

3.  41 

2.  37 

1.14 

100. 45 

A3.  Ill 

1.244 

.124 

.014 

.012 

.025 

.038 

.055 

.025 

15 

72.89 

15.  83 

1.89 

0. 10 

1.31 

2.04 

2.  81 

2.29 

1.21 

100.  37 

A3.  Ill 

1.215 

.  155 

.012 

.001 

.033 

.037 

.045 

.024 

10 

76. 41 

13.  08 

1.99 

n.  d. 

0.  61 

0.  82 

4.  41 

1.02 

0.  70 

0.40 

99. 40 

B3.  IV 

1.274 

.128 

0. 13 

(.026) 

.015 

.014 

.071 

.011 

.005 

17 

73.  08 

13. 50 

2.  60 

0.13 

0. 15 

1.07 

3.  95 

3. 19 

1.33 

0.  62 

trace 

trace 

0.  06 

99.  80 

2.514 

A2.  II 

1.218 

.132 

.016 

.002 

.004 

.020 

.064 

.034 

.008 

— 

— 

— 

PERSALANE - ALSBACHOSE. 


137 


ORDER  3.  QUARFELIC.  COLUMBARE— Continued. 


SUBRANG  4.  DOSODIC.  ALSBACHOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO 

LinO 

trace 

trace 

Q  52.1 
or  8.3 
ab  22. 5 
an  8. 3 

C  1.0 

hy  3.1 
mt  2.8 
il  1.2 

Great  Falls  of  the  Po¬ 
tomac,  Maryland. 

W.  F.  Hille- 
brand. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S. 
p.  670,  1895. 

Granite-gneiss. 

Q  41.2 
or  13.9 
ab  27. 8 
an  10.  8 

C  2.5 

hy  4.4 

Bad  Vermilion  Lake, 
Rainy  River  region, 
Ontario. 

W.  Lawson. 

A.  P.  Coleman, 

J.G.,  IV. 
p.  909,  1896. 

Granite. 

Q  40.1 
or  13.3 
ab  36. 2 
an  4.2 

C  2.8 

hy  2.7 

Granite  Heights, 
Wausau, 

Wisconsin. 

W.  W.  Daniells. 

E.  R.  Buckley, 

B.  IV,  G.  Nh. 

S.  Wise, 
p.  136,  1898. 

Granite. 

S03 

LioO 

0. 37 
trace 

Q  35.4 
or  7. 2 
ab36.2 
an  8. 9 

C  6.2 

hy  1.3 
mt  0.7 
hm;2. 0 

Mount  Holmes,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.  S.  G.  S., 

XXXII, 
p.  65,  1899. 

Dacite-por- 

phyry. 

A1203  high? 

Q  38.0 
or  18.3 
ab  30. 9 
an  8.1 

C  1.7 

hy  0.4 
mt  0.2 

East  Mountain, 

Elk  Mountains, 
Colorado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.S.G.S.,  148, 
p.  177,  1897. 

Rhyolite. 

Q  46.4 
or  8.9 
ab  34. 1 
an  8.1 

C  0.4 

hy  0.9 
mt  0.5 

Cinder  Cone, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.S.G.S.,-79, 
p.  29,  1891. 

Pumice. 
(Inclosure 
in  basalt.) 

Dried  at  105° 

Q  41.2 
or  5.6 
,ab  26. 2 
an  9.5 

C  5.5 

hy  2.2 
mt  1. 8 

Oaxaca,  Mexico. 

A.  Rohrig. 

Felix  and  Lenk, 

Btr.  G.  Mex.,  II, 
p.  129,  1899. 

Rhyolite. 

Much  H20. 

Q  43.9 
or  7.2 
ab  33. 0 
an  7.5 

C  4.0 

hy  4.1 

Corinto,  Nicaragua. 

J.  Petersen. 

J.  Petersen, 

N.J.,  1898,  II, 
p.  157. 

Obsidian. 

S 

trace 

Q  39.4 
or  15. 0 
ab  32. 0 
an  10. 6 

C  1.9 

hy  0.4 

Average  sample. 
Essequibo  and 
Demerara  rivers, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Essequibo, 
etc.,  rivers, 
p.  44,  1900. 

Aplite. 

Dried  at  110°. 
Alkalies  corr. 
Priv.  contrib. 

S 

none 

Q  35.3 
or  13. 3 
ab  33. 5 
an  10. 0 

C  3.1 

hy  1.9 
mt  0.5 
il  1.1 

Average  sample. 
Essequibo  River, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Essequibo, 
etc.,  rivers, 
p.  42,  1900. 

Granitite. 

Dried  at  110°. 
Alkalies  corr. 
Priv.  contrib. 

Q  36.0 
or  12. 2 
ab  38. 8 
an  7.5 

hy  0.  6 
mt  2.8 
hml.O 

Melibocus, 

Odenwald, 

Hesse. 

F.  Kutscher. 

C.  Chelius,  Notbl.  Ver. 
Erdk.  Darmst.  (4), 
XIII,  p.  8,  1892. 

Alsbachite. 

S03 

0.34 

Q  35.7 
or  15. 0 
ab  32. 5 
an  8.3 

C  1.3 

hy  2. 2 
mt  3.2 

Hermesbuckel, 
n.  Aschaffenburg, 
Hesse. 

Not  stated. 

G.  Klemm,  Erl.  G.  Kte. 
Hessen,  III,  Bl.  Schaaf- 
heim,  p.  19,  1894. 

Granite. 

S03=S  of  F'eS... 
Sum  low. 

Q  48.5 
or  13. 9 
ab  22. 5 
an  5. 6 

C  4.2 

hy  3.4 
mt  0.9 

Schneegrube, 

Riesengebirge, 

Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  189,  1899. 

Granite 

(graphic). 

Q  39.8 
or  13. 9 
ab  28. 8 
an  10. 6 

C  0.6 

hy  2.5 
mt  3. 1 

Arnsdorf, 

Riesengebirge, 

Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  176,  1899. 

Granite. 

Q  41.6 
or  13. 3 
ab  23. 6 
an  10. 3 

C  5.0 

hy  3.3 
mt  0.2 
hm  1. 8 

Schneekoppe, 

Riesengebirge, 

Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  165,  1899. 

Granitite. 

Q  43.1 
or  6. 1 
ab37.  2 
an  3. 9 

C  3.3 

hy  4.3 
il  0.8 

Mount  Kastel, 

Crimea,  Russia. 

R.  Prendel. 

R.  Prendel, 

Cf.  N.  J.  1887,  II, 
p.  95. 

Liparite. 

S03 

0. 12 

Q  35.2 
or  18. 9 
ab33. 5 
an  5.6 

C  1.4 

hy  0.  4 
mt  0.5 
hm  2.2 

Waihi,  Hauraki, 
Auckland  Province, 
New  Zealand. 

P.  Holland. 

P.  Holland, 

Q.  J.  G.  S.,  LV, 
p.  467,  1899. 

Rhyolite. 

Dried  at  100°. 

138 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  PERSALANE— Continued. 
KANG  2.  DOM  ALKALI!'.  ALSBACHASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K,0 

H20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

74.  79 

12.  59 

1. 19 

n.  d. 

0.  31 

3.  58 

5. 10 

0.21 

1.03 

0.  09 

0.  58 

0. 17 

trace 

trace 

none 

99.  64 

A2.  II 

1.247 

.123 

.007 

(.014) 

.008 

.064 

'  .082 

.002 

.002 

— 

— 

— 

2 

72.  77 

3.00 

1.28 

12.  65 

0.67 

2.47 

4. 95 

0.34 

1. 16 

0.  07 

0.47 

0.  22 

0.  04 

0.  08 

trace 

100. 17 

Al.  I 

1.213 

.127 

.008 

.037 

.017 

.045 

.080 

.003 

.003 

— 

.001 

3 

77.  58 

13.  96 

0.  54 

0.  45 

0.  30 

0.  83 

4.97 

0. 90 

0.  20 

none 

0.  40 

trace 

none 

100. 13 

A2.  II 

1.293 

.137 

.003 

.006 

.008 

.014 

.080 

.010 

.005 

— 

— 

4 

75.00 

14.  96 

1. 12 

n.  d. 

1.41 

0.  83 

4.  83 

0.  70 

1.62 

100.  47 

2.  55 

A3.  Ill 

1. 250 

.147 

.007 

(.014) 

.035 

.014 

.077 

.008 

KANG  3.  ALKALICALCIC.  RIESENASE. 


1 

66.  86 

17.41 

0.40 

1.27 

0.51 

5.  37 

1.21 

3.69 

0.  24 

0.82 

0.  97 

0.51 

0.  73 

99.  99 

2.  655 

A2.  II 

1.114 

.171 

.003 

.018 

.013 

.096 

.019 

.039 

.012 

.012 

.010 

2 

72. 11 

16.  74 

0.  89 

1.28 

1.04 

2.  24 

1.20 

2.  88 

1.  75 

100. 13 

A3.  Ill 

1.202 

.164 

.006 

.018 

.026 

.040 

.019 

.030 

3 

76.  59 

11.43 

0.  47 

2. 12 

0.  64 

2.  78 

0.97 

3.  76 

1.39 

100. 15 

2.565 

A3.  Ill 

1.278 

.112 

.003 

.030 

.016 

.050 

.016 

.040 

20° 

4 

72. 10 

13.  98 

2.  08 

2.38 

1.02 

2.  41 

1.07 

3.  29 

1.65 

99.  98 

2.551 

A3.  Ill 

1.202 

.137 

.013 

.033 

.026 

.043 

.018 

.035 

18° 

5 

71. 14 

11. 14 

n.  d. 

2.  73 

1.62 

3.17 

1.40 

4.  13 

1.  77 

trace 

none 

trace 

trace 

99.  83 

A2.  II 

1.186 

.110 

— 

.038 

.041 

.057 

.022 

.043 

— 

— 

— 

6 

70.  20 

15.  48 

0.  86 

1.07 

0.93 

2.  36 

1.24 

4/38 

1.80 

trace 

trace 

trace 

100.  49 

2.  662 

A2.  II 

1.170 

.152 

.005 

.015 

.023 

.042 

.020 

.046 

— 

— 

— 

15° 

7 

76.  33 

12.  84 

2.  22 

n.  d. 

0.  37 

2.96 

1.09 

3.42 

0.  83 

100. 06 

2.  557 

A4.  IV 

1.272 

.126 

.014 

(.  028) 

.009 

.052 

.018 

.036 

17° 

8 

72.  95 

16.  51 

1.62 

n.  d. 

0.  43 

3.  27 

1.04 

3. 12 

0.  98 

0.  23 

100. 15 

2.  623 

A3.  Ill 

1.216 

.162 

.010 

(.020) 

.011 

.059 

.017 

.033 

.002 

15° 

RANG  3.  ALKALICALCIC.  RIESENASE. 


1 

70.  74 

14.  68 

0.  69 

0.  58 

0.  28 

4. 12 

2.  29 

2.  59 

2.  09 

2. 14 

0.  06 

0.  03 

100. 29 

2.  680 

A2.  II 

1.179 

.144 

.004 

.008 

.007 

.073 

.037 

.027 

.001 

16° 

2 

65.  67 

13.  48 

1.51 

n.  d. 

0.31 

2.  41 

1.52 

2.  42 

12.  27 

trace 

trace 

0.32 

100. 19 

A3.  Ill 

1.095 

.132 

.009 

(.018) 

.008 

.043 

.024 

.025 

— 

— 

0.02 

3 

77.  27 

9.  98 

2.58 

0.41 

0.  51 

2.  28 

2. 14 

2.39 

0.  86 

trace 

trace 

trace 

0. 99 

99.  41 

2.  667 

A3.  Ill 

1.288 

.098 

.016 

.005 

.013 

.941 

.0:34 

.024 

— 

— 

.014 

PERSALANE - KIESENOSE. 


139 


ORDER  3.  QUARFELIC.  COLUMBARE— Continued. 

SUBRANG  5.  PERSODIC.  YUKONOSE. 


Inclu 

sive. 

Norm. 

SrO 

none 

Q  37. 1 

di 

5. 5 

LUO 

none 

or  1.1 

ah  43. 0 
an  10. 8 

SrO 

trace 

Q  34.9 

hv 

5.1 

LUO 

trace 

or  1.7 

mt 

1.9 

ab  41. 9 
an  12. 5 

il 

0.5 

Q  42.8 

hy 

0.6 

or  5. 6 

nit 

0.7 

ab  41.  9 
an  3. 9 

il 

0.8 

C  3.4 

Q  39.8 
or  4.4 
ab  40. 3 
an  3. 9 

C  4.9 

hy 

5.3 

Locality. 


Fort  Hamlin,  Yukon 
River,  Alaska. 


Greenville,  Plumas 
County,  California. 


Towakaima  Falls, 
Barama  River, 
British  Guiana. 


Mount  Kastel, 
Crimea,  Russia. 


Analyst. 


H.  N.  Stokes. 


W.  F.  Hille- 
brand. 


Assistant  of 
J.  B.  Harri¬ 
son. 

R.  Prendel. 


Reference. 


J.  E.  Spun-, 

B.  U.  S.  G.  S.,  168, 
•p.  229,  1900. 

H.  W.  Turner, 

B.  U.  S.  G.  S.,  148, 
p.  201,  1897. 

Rep.  G.  N.  W.  Distr., 
II,  1898,  p.  10. 


R.  Prendel, 

N.  J.,  1887,  II. 
Cf.  p.  96. 


Author’s  name. 


Remarks. 


Tonalite-aplite. 


Quartz- 

porphyry. 


Aplite. 


Liparite. 


Dried  at  110°. 
Alkalies? 


Near  westpha- 
lose. 


SUBRANG  2.  DOPOTASSIC. 


S03 

trace 

Q  35.0 
or  21. 7 
ab  10. 0 
an  23. 1 

C  3.1 

hy  1. 7 
mt  0.7 
il  1. 8 
ap  1.3 

Nieder  Modau, 

Hesse. 

F.  W.  Schmidt. 

C.  Chelius,  Erl.  G.  K. 
Hesse,  I,  Bl.  Rossdorf, 
p.  44,  1886. 

Granite- 

porphyry. 

Q  47.4 
or  16. 7 
ab  10. 0 
an  11.1 

C  7.7 

hy  4.2 
mt  1.4 

Barndorfer  Berg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  222,  1899. 

Schliere  in 
granite. 

Q  47.9 
or  22. 2 
ab  8.4 
an  13. 9 

C  0.6 

hv  5.0 
mt  0.7 

Between  Bolzano  and 
Ameno,  Lago 
d’Orta,  Piedmont. 

L.  Ricciardi. 

L.  Ricciardi,  Atti.  Ac. 
Gioen.  Catan. ,  XVIII, 
(18),  1885. 

Porphyry. 

Q  45.1 
or  19.5 
ab  9.4 
an  12. 0 

C  4.2 

hy  5.3 
mt  3.0 

Arona,  Lago  Mag- 
giore,  Piedmont. 

L.  Ricciardi. 

L.  Ricciardi,  Atti.  Ac. 
Gioen.  Catan. ,  XVIII, 
.(8),  1885. 

Porphyry. 

X 

so3 

Cl 

Li.O 

1.05 

1.78 

trace 

trace 

Q  36.9 
or  23. 9 
ab  11. 5 
an  12. 5 

di  2.9 
hy  7.7 

Sassoforte,  Rocca- 
strada,  Tuscany. 

R.  V.  Mat- 
teucci. 

R.  V.  Matteucci, 

B.  C.  G.  It,  XXI, 
p.  285,  1890. 

Trachyte. 

X  includes  Si02 
and  Pt.  S03 
for  S? 

S 

ZnO 

0.03 

2.14 

Q  39.4 
or  25. 6 
ab  10. 5 
anil.  7 

C  4.5 

hy  3.6 
mt  1.2 

Serpieri  Mine, 
Laurium,  Greece. 

R.  Lepsius. 

R.  Lepsius,  G.  von 
Attika,  Berlin,  1893, 
p.  93. 

Granite. 

ZnO  as  silicate? 

Q  48.4 
or  20. 0 
ab  9.4 
an  14. 5 

C  2.0 

hy  4. 6 

Between  Bolzano  and 
Ameno,  Lago 
d’Orta,  Piedmont. 

L.  Ricciardi. 

L.  Ricciardi,  Atti.  Ac. 
Gioen.  Catan. ,  XVIII, 
(17),  1885. 

Porphyry. 

Cf.  No.  3  above. 

Q  46.0 
or  18. 3 
ab  8.9 
an  16. 4 

C  5.4 

hy  3.7 

Mte.  Deruta, 

Umbria. 

L.  Ricciardi. 

A.  Verri, 

B.  S.  G.  It.,  V, 
p.  54,  1886. 

Granite. 

* 

SUBRANG 

3.  SODIPOTASSIC. 

RIESENOSE. 

1 

Cl 

SrO 

trace 

trace 

Q  38.5 
or  15.0 
ab  19. 4 
an  20. 3 

C  0.7 

hy  1.0 
mt  0.9 

Leadville,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

M.  U.  S.  G.  S.,  XII, 
p.  332,  1886. 

j  so3 

0.28 

Q  41.3 
or  13. 9 
|  ab  12. 6 
an  12. 0 

C  4.1 

hy  3.2 

Silver  Cliff,  Custer 
County,  Colorado. 

L.  G.  Eakins. 

Cross  and  Eakins, 

A.  J.  S.,  XLIV, 
p.  101,  1892. 

Pitchstone. 

Much  II., O. 

IQ  50.6 
or  13. 9 
abl7.8 
an  10. 8 

C  0.3 

hv  1.3 
mt  1.2 
hm  1. 7 

Wengen  wiese, 

Heuweg,  Hesse. 

F.  W.  Schmidt. 

C.  Chelius, 

Erl.  G.  Kte.  Hesse,  I, 
Bl.  Rossdorf,  ' 

23.  35,  1886. 

Granite. 

MnO  high. 

140 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 

RANG  3.  ALKALICALCIC.  RIESENASE— Continued. 


No. 

SiO, 

A1A 

FeA 

FeO  MgO 

CaO 

Nad) 

K,0 

h2o+ 

H20- 

C02 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

76.  82 

143.  68 

1.  75 

0. 32  0. 51 

2.  83 

1.55 

2. 10 

0.  74 

100.  30 

A3.  Ill 

1.280 

.134 

.011 

.004  .013 

.050 

.025 

.022 

5 

75.  27 

13.98 

1.90 

1.00  1.44 

2. 16 

1.54 

2.01 

0.  91 

100.  21 

A3.  Ill 

1.255 

.137 

.012 

.014  ;  .036 

.039 

.025 

.021 

6 

75.21 

14.18 

0.  75 

1.  05  0.  44 

2.  40 

1.74 

3.12 

1.01 

99.  90 

A3.  Ill 

1.254 

.139 

.005 

.015  . 011 

.043 

.028 

.033 

7 

72.  92 

17.  77 

0.  20 

1.09  0.79 

2.17 

1.24 

2.  65 

1.  35 

100. 18 

A3.  Ill 

1.215 

.174 

.001 

.  015  . 020 

.039 

.020 

.028 

8 

72.  71 

14.  59 

1.  78 

0.92  2.17 

2. 57 

1.65 

1.99 

1.67 

100.  05 

A3.  Ill 

1.212 

.143 

.011 

. 012  . 054 

.047 

.027 

.021 

9 

69.04 

16.  91 

2.  22 

1.36  1.86 

3. 16 

1.  76 

2.  44 

1.01 

99.  76 

A3.  Ill 

1.151 

.166 

.014 

.019  .047 

.056 

.028 

.025 

10 

69.  40 

15.  79 

2. 15 

n.  d.  '  2.36 

4.  68 

1.34 

2.  76 

1.44 

99.  92 

A4.  IV 

1.157 

.155 

.014 

(.  028)  .  059 

.084 

.021 

.030 

11 

73.  00 

14.  45 

n.  d. 

3. 12  0.  82 

3.  30 

1.  70 

3. 18 

0.  70 

trace 

trace 

trace 

trace 

100. 27 

2.  76 

A3.  Ill 

1.217 

.142 

— 

.043  |  .021 

.059 

.027 

.034 

— 

— 

— 

12 

69.  36 

16.  93 

1.27 

1.25  0.92 

3.66 

2. 16 

3.  20 

1.10 

none 

trace 

99.  85 

2.  680 

A3.  Ill 

1.156 

.  166 

.008 

.017  .023 

.065 

.035 

.034 

— 

— 

15° 

RANG  3.  ALKALICALCIC.  RIESENASE. 


1 

73.69 

12.89 

1.02 

2.  59  0.  50 

3.  74 

2.81 

1.48 

1.06 

trace 

trace 

trace 

99.  78 

A3.  Ill 

1.228 

.126 

.006 

.036  .013 

.067 

.045 

,016 

— 

— 

— 

2 

73.  65 

11. 19 

1.31 

3.  25  0.  51 

2.  78 

3.  74 

1.86 

0.44 

99.  23 

B3.  IV 

1.228 

.110 

.008 

.045  .  013 

.050 

.060 

.020 

3 

71.50 

17.44 

0.  45 

1.96  1.03 

3. 00 

2.  45 

1.53 

0.  68 

0.  42 

0. 10 

trace 

none 

100. 56 

A2.  II 

1.192 

.171 

.003 

.028  !  .026 

.053 

.040 

.016 

.001 

— 

— 

4 

72.  81 

15.  22 

1.88 

1.40  1.10 

2.  77 

2. 10 

1.54 

1.66 

100.  48 

A3.  Ill 

1.214 

.149 

.012 

.019  . 027 

.050 

.034 

.016 

5 

76. 13 

12.  44 

0.  74 

n.  d.  0.  83 

3.  25 

3.  34 

1.50 

1.52 

99.  75 

A3.  Ill 

1. 269 

.122 

.005 

(.010)  .021 

.058 

.054 

.016 

6 

69. 10 

16.  32 

3.  70 

1.37  :  1.12 

5.10 

2.91 

1.06 

n.  d. 

100.68 

2.  456 

A3.  Ill 

1. 152 

.160 

.023 

.019  .028 

.091 

.047 

.012 

PERSALANE - SR.  4  OF  RIESENASE. 


141 


ORDER  3.  QUARFELIC.  COLUMB ARE— Continued 

SUBRANG  3.  SODIPOTASSIC.  RIESENOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  53.1 
or  12. 2 
ab  13. 1 
an  13. 9 

C  3.8 

hy  1.3 
mt  0.9 
hm  1. 1 

Schliisselberg, 
n.  Schmiedeberg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  180,  1899. 

Granite. 

Q  51.8 
or  11.7 
ab  13. 1 
an  10. 8 

C  5.2 

hy  3.9 
mt  2. 8 

Griinbusch, 
n.  Hirschberg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  194,  1899. 

Granite. 

Q  46.9 
or  18.3 
ab  14. 7 
an  12. 0 

C  3.6 

hy  2.4 
mt  1.2 

Bolzenschloss  Berg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  186,  1899. 

Aplite. 

Q,  48.9 
or  15. 6 
ab  10. 5 
an  10.8 

C  8.9 

hy  3.8 
mt  0.2 

Above  Buche, 
Schmiedeberg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  168,  1899. 

Granitite. 

Q  46.6 
or  11.7 
ab  14. 1 
an  13. 1 

C  4.9 

hy  *6. 4 
mt  2. 7 

Griinbusch, 
n.  Hirschberg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  169,  1899. 

Granitite. 

Q  40.1 
or  13. 9 
ab  14.  7 
an  15.  6 

C  5.8 

hy  5.7 
nit  3.2 

Griinbusch, 
n.  Hirschberg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  210,  1899. 

Granodiorite. 

Q  35.8 
or  16.7 
ab  11. 0 
an  23. 4 

C  2.1 

hy  9.6 

Radworza, 

Rac.hergebirge, 

Styria. 

A.  Pontoni. 

A.  Pontoni, 

T.  M.  P.  M.,  XIA7, 
p.  370,  1895. 

Granite- 

porphyry. 

B203  trace 

S03  trace 

Cl  trace 

Li20  trace 

* 

Q  40.1 
or  18.  9 
ab  14.1 
an  16. 4 

C  2.2 

hy  7.7 

Torniella, 

Roccastrada, 
Grosseto,  Italy. 

R.  A".  Matteucci. 

R.  A".  Matteucci, 

B.  S.  G.  It.,  X, 
p.  677,  1891. 

Nevadite. 

Q  34.8 
or  18.  9 
ab  18.3 
an  18. 1 

C  3,3 

hy  3.5 
mt  1.9 

Plaka,  Laurion, 
Greece. 

R.  Lepsius. 

R.  Lepsius, 

G.  v.  Attika,  Berlin. 
1893,  p.  89. 

Granite. 

SUBRANG  4.  DOSODIC. 


SrO 

Li»0 

trace 

trace 

Q  41.2 
or  8.9 
ab  23. 6 
an  18. 1 

di  0. 4 
hy  5. 0 
mt  1.4 

Port  Deposit,  Balti¬ 
more,  Maryland. 

W.  Bromwell. 

G.  P.  Grimsley, 

J.  Cinn.  Soc.  Nh., 
XVII,  1894. 

Granite. 

Cf.  W.  C.  Dav, 
18  A.  R.  U.  S. 
G.S.,A7,  p.  963, 
1897. 

Q  37.1 
or  11. 1 
ab  31. 4 
an  8.3 

di  4.8 
hy  3.7 
mt  1. 9 

Berlin,  Wisconsin. 

S.  Weidman. 

S.  Weidman,  B.  Ill, 
Wise.  G.  Nh.  S., 
p.  2,  1898. 

Rhyolite-gneiss. 

Sum  low. 

.  s 

V 

trace 

Q  41.9 
or  8. 9 
ab  21.0 
an  14. 7 

C  6.3 

hy  6.0 
mt  0. 7 

Potaro,  etc.,  rivers 
(average  sample), 
British  Guiana. 

Assistant  of 

J.  B.  Harri¬ 
son. 

J.  B.  Harrison, 

Rep.  G.  Essequibo, 
etc.,  rivers, 
p.  52,  1900. 

Quartz-porphy- 

rite. 

Dried  at  110°. 
Alkalies  corr. 
Priv.  contr., 

J.  B.  H. 

Q  46.8 
or  8.9 
ab  17.8 
an  13. 9 

C  5.0 

hy  3.6 
mt  2. 8 

Koppenkegel  Riesen¬ 
gebirge,  Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  152,  1899. 

Granitite. 

Q  43.2 
or  8.9 
ab  28. 3 
an  13. 9 

di  1.8 
hy  1.3 
mt  0.7 

Bolzenschloss, 

Riesengebirge, 

Silesia. 

AV.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  184,  1899. 

Aplite. 

Q  35.3 
or  6.7 
ab  24. 6 
an  25. 3 

C  1.0 

hy  2.8 
mt  4. 4 
hm  0. 6 

Izu-san, 

Japan. 

B.  Koto. 

B.  Koto, 

Q.  J.  G.  S.,  XL, 
p.  445,  1884 

Andesite. 

142 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS 


CLASS  I.  PERSALANE — Continued. 
RANG  3.  ALK A LIC A LCIC.  RIESENASE. 


No. 

Si02 

A1A 

Fe2C)s 

FeO 

MgO 

CaO 

Na.,0 

k2o 

H..O+  ' 

H,0— 

CO, 

Ti02 

PA 

MnO 

Bat) 

Sum 

Sp.  gr. 

1 

72.  24 

13.  84 

1.45 

1.  86 

1. 10 

3.  40 

4.43 

0.  39 

0.  69 

0. 17 

0. 41 

0. 10 

0. 12 

0.  08 

100.  28 

Al.  I 

1.204 

.136 

.009 

.026 

.028 

.060 

.071 

.004 

.005 

.001 

.002 

9 

72.  54 

16. 19 

1. 16 

1. 17 

0.  65 

3.  25 

4.47 

0.  23 

0.  05 

• 

none 

0.  20 

0. 12 

trace 

100.  03 

A2.  II 

1.209 

.159 

.007 

.017 

.016 

.058 

.072 

.002 

.002 

.001 

— 

3 

66.  99 

17.  56 

1.41 

3.39 

0.  93 

4.  25 

3.35 

0.34 

1.53 

trace 

trace 

99.  75 

A3.  Ill 

1.117 

.172 

.009 

.048 

.023 

.  076 

.054 

.003 

1 

RANG  4.  DOCALCIC. 


1 

77.  61 

13.  34 

2.07 

n.  d. 

0.  52 

3.  67 

0.61 

2.04 

0.  55 

100.  41 

2.  556 

A4.  IV 

1.294 

.132 

.013 

(.026) 

.013 

.  066 

.009 

.021 

17° 

RANG  4.  DOCALCIC. 


1 

68.  87 

16.  42 

*  1.91 

2.  06 

2.54 

4.64 

1.25 

1.  10 

1.  12 

99.91 

A3.  Ill 

1.148 

.161 

.012 

.029 

.064 

.083 

.  020 

.012 

CLASS  I.  PERSALANE’. 

RANG  1.  PERALKALIC.  LIPARASE. 


1 

70.  65 

16.  16 

1.53 

0.52 

trace 

0.  55 

0.54 

8.  66 

1.22 

trace 

99.83 

2.  62 

A3.  Ill 

1.178 

.159 

.009 

.007 

.010 

.009 

.092 

— 

2 

68. 13 

15.  75 

1.60 

0.  74 

0.  45 

0.27 

0.  61 

10.  54 

1.90 

0.  31 

trace 

100.  37 

2.573 

A2.  II 

1.136 

.154 

.010 

.010 

.011 

.005 

.010 

.112 

.004 

— 

3 

69.  06 

14.41 

1.89 

0.  54 

0.  39 

trace 

0.  24 

12.  33 

0.  96 

0.09 

0.  24 

0.  08 

100.  51 

2.  553 

A2.  II 

1.151 

.141 

.012 

.007 

.010 

.004 

.131 

.003 

.001 

RANG  1.  PERALKALIC.  LIPARASE. 


1 

75.  20 

12.  96 

0.  37 

0.  27 

0. 12 

0.  29 

2.  02 

8.38 

0.58 

trace 

0.  03 

100. 22 

A3.  Ill 

1.253 

.127 

.003 

.004 

.003 

.005 

.032 

.089 

— 

— 

2 

73. 90 

13.65 

0.  28 

0. 42 

0. 14 

0.  23 

2.53 

7.99 

0.  33 

0.  16 

0.  07 

0.  05 

trace 

trace 

99.  75 

Al.  I 

1.232 

.134 

.002 

.005 

.004 

.004 

.  .040 

.085 

.001 

— 

— 

— 

3 

71. 12 

13. 35 

1.37 

1.28 

0.  47 

0.  32 

2.  02 

9.  82 

1.13 

100.  88 

A3.  Ill 

1.185 

.131 

.009 

.018 

.012 

.005 

.032 

.104 

4 

75.  44 

12.33 

0. 49 

1.00 

0.  52 

trace 

2.38 

7. 13 

1.26 

0.  07 

0.11 

101.  73 

C2.  IV 

1.257 

.121 

.003 

.014 

.  C13 

— 

.039 

.075 

.001 

.002 

5 

75.  47 

11.21 

0.  44 

n.  d. 

0.  30 

0.  80 

2.98 

7.  98 

0.  85 

none 

0.  11 

100. 14 

A3.  Ill 

1.258 

.110 

.003 

(.006) 

.008 

.014 

.048 

.085 

_ 

.002 

PERSALANE— OMEOSE. 


143 


ORDER  3.  QUARFELIC.  COLUMBARE— Continued. 
SUBRANG  5.  PERSODIC.  VULCANOSE. 


Inclusive. 

Norm. 

Locality. 

SrO  trace 

Q  35.6  By  4.6 

Near  Milton, 

or  2. 2  nit  2. 1 

ftb  37. 2  il  0. 8 
nil  16. 7 

Calaveras  County, 
California. 

Q  37.4  hy  2.9 

Towakaima  Falls, 

qr  1. 1  mt  1. 6 

ab  37. 7 
ail  16. 1 

C  2.8 

Barama  River, 
British  Guiana. 

Q  33. 7  hy  7. 4 

or  1.7  mt  2.1 

ab  2s.  3 
an  21. 1 

C  4.0 

Projectile  of  1888, 
Vulcano,  ASolian 
Islands. 

Analyst. 


Hillebrand. 


Assistant  of 
J.B.  Harrison. 


L.  Kahlenberg. 


Reference. 


Author’s  name.  Remarks. 


H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S.,  II, 
p.  484,  1894. 

J.  B.  Harrison, 

Rep.  G.  N.W.  Distr., 
II,  p.  10,  1898. 

W.  IT.  Hobbs, 

B.  G.  S.  A.,  V, 
p.  601,  1894. 

Z.  D.  G.  G.,  XLV, 
p.  591,  1893. 


Quartz-porphy- 

rite. 


Granite-gneiss.  Dried  at  110°. 

Alkalies? 


Vulcanite. 


SUBRANG  1.  PREPOTASSIC. 


Q  56. 6  hy  4. 6 

Buccione, 

L.  Ricciardi. 

L.  Ricciardi, 

Porphyry. 

or  11. 7 

Lago  d’Orta, 

Att.  Ac.  Gioen. 

an  18.  3 

Piedmont. 

Catan.,  XVIII, 

C  3.7 

p.  17,  1885. 

SUBRANG  2.  SODIPOTASSIC. 


Q  42.5 
or  6.7 
ab  10. 5 
an  23. 1 

C  4.7 

hy  8. 6 
lilt  2.8 

V  orderberg, 
Riesengebirge, 
Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B. ,  XII, 
p.  214,  1899. 

Schliere  in 
granite. 

ORDER  4.  QUARDOFELIC. 

BRITANNARE. 

SUBRANG 

1.  PERPOTASSIC. 

LEBACHOSE. 

Q,  33. 1 
.or  51.2 
ab  4. 7 
an  2.8 

C  5.0 

mt  2.1 

Chywoon  Morvah, 
Cornwall. 

J.  A.  Phillips. 

J.  J.  II..  Teall, 

Br.  Petr., 
p.  314,  1898. 

Granite. 

S03  0. 07 

Q  23.0 
or  62. 3 
ab  5. 2 
an  1.4 

C  8 

hy  1.1 
nit  1. 4 
il  0.6 
hm  0. 6 

Himmelberg, 

Bl.  Lebach, 

Prussia. 

K.  Boettcher. 

Weiss  and  Grebe, 

Erl.  G.  Kte.  Preuss,  Bl. 
Lebach,  p.  30,  1889. 

Quartz-por¬ 

phyry. 

S03  for  S. 

S03  0. 28 

Q  19.9 
or  72.J3 
ab  2.1 

C  0.6 

hy  1.0 
mt  1. 6 
hm0.8 

Mutterbach, 

Masserthal, 

Thiiringerwald. 

Hampe. 

H.  Loretz, 

Jb.  Pr.  G.L.-A.  (1888), 
p.  295,  1889. 

Quartz-ortho- 

clasite. 

S03  for  S. 

SUBRANG  2.  DOPOTASSIC.  OMEOSE. 


Q.  30.2  hy  0.4 

Round  Mountain, 

L.  G.  Eakins. 

W.  Cross, 

Rhyolite. 

or  49. 5  mt  0. 7 

Rosita  Hills, 

Pr.  Col.  Sc.  Soc.,  II, 

an  l!  4 
. 

Colorado. 

p.  33,  1887. 

F  none 

Q  28.0  hy  0.8 

Currant  Creek  Can- 

VV.  F.  Hille- 

E.  B.  Mathews, 

Granite. 

SrO  none 

LUO  trace 

or  47. 3  nit  0. 5 
'  ab  21.  0 

yon,  Pike’s  Peak, 

brand. 

B.  U.  S.  G.  S.,  148, 

an  1. 1 

Colorado. 

p.  160,  1897. 

C  0.5 

Q  20.9  ac  2.3 

Torre  de  la  Testa, 

A.  Osann. 

A.  Osann, 

Liparite. 

or  57.  8  di  1.2 
ab  14. 1  hy  2. 5 

Cabo  de  Gata, 

Z.  D.  G.  G  XLIII, 

mt  0. 9 

Spain. 

p.  695,  1891. 

# 

Zr02  0.34 

Q,  32.9  hy  2.7 

N.  of  Drammen, 

I\  Jannasch. 

W.  C.  Brdgger, 

Quartz-por- 

FeSa  0. 66 

or  41. 7  mt  0. 7 

ab  20.4 

Norway. 

Z.  K.,  XVI, 

phyry. 

C  0.7 

p.  77,  1890. 

Q  32.8  ns  2.9 

Ivolsjon,  Smaland, 

H.  Santesson. 

O.  Nordenskjold, 

Rhyolite  (Hal- 

or  47. 3  di  3. 3 

ab  13  1 

Sweden. 

B.  G.  Inst.  Un.  Upsala, 

leflinta). 

- 

I,  p.  216,  1894. 

Also  in  17  A.  R. 
U.S.G.  S.,1I, 
p.  324,  1896. 


Sum  high. 


Alkalies  high? 


144 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 
RANG  1.  PERALKALIC.  LIPARASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

6 

71.62 

12.  83 

0. 13 

.010 

'  n.  d. 

1.48 

3.  81 

9.  69 

0.  02 

99.  68 

A3.  Ill 

1. 194 

.126 

.001 

.001 

— 

.027 

.060 

.103 

i 

7 

74.  66 

11.49 

2.02 

n.  d. 

0. 10 

0.  44 

1.69 

8.  68 

0.  74 

0.  07 

0.  08 

99.  97 

2.  598 

A3.  Ill 

1.241 

.113 

.013 

(.014) 

.003 

.008 

.027 

.021 

.001 

.001 

20.5° 

8 

63.  25 

16.  53 

3.  10 

0.  26 

0.  53 

0.  26 

1. 19 

11.00 

2.  71 

none 

0. 52 

0.  27 

99.  74 

2.559 

A2.  II 

1.054 

.162 

.020 

.004 

.013 

.004 

.018 

.117 

.007 

.002 

9 

70.91 

15.  32 

trace 

none 

0.  07 

0.  58 

2.31 

10.  07 

0.  51 

99.  77 

2.  564 

A3.  Ill 

1.182 

.150 

— 

— 

.002 

.010 

.037 

.107 

10 

68.  87 

16.  62 

0.  43 

2.  72 

1.60 

0.  71 

1.80 

6.48 

0.  74 

0. 05 

100.  02 

2.  762 

A3.  Ill 

1. 148 

.163 

.003 

.038 

.040 

.012 

.029 

.069 

- 

RANG  1.  PERALKALIC.  LIPARASE. 


1 

75.  98 

12.  34 

0.  85 

0.93 

0. 15 

0. 13 

4.  02 

4.  44 

0.64 

0.  24 

none 

0. 17 

0.  03 

trace 

0.  07 

100.  02 

Al.  I 

1.266 

.121 

.005 

.012 

.004 

.002 

.064 

.047 

.002 

— 

— 

— 

2 

72.  77 

12. 15 

0.  44 

3.06 

0.  22 

0.  07 

3.  38 

4.  67 

0.  55 

0. 17 

2.  06 

0.  20 

trace 

0.  16 

0.  03 

100.  09 

Al.  I 

1. 213 

.119 

.003 

.0413 

.006 

.001 

.055 

.050 

.003 

— 

.002 

— 

3 

73.  69 

12.  46 

1.21 

1.75 

0.17 

0.36 

4.47 

4.  92 

0.  24 

0. 14 

trace 

0.  28 

0.  04 

0.  15 

none 

100.  09 

Al.  I 

1. 228 

.122 

.007 

.024 

.004 

.007 

.072 

.052 

— 

.004 

— 

.002 

— 

4 

73.  03 

13.  43 

0.  40 

1.49 

0. 14 

0.  79 

4.91 

4.  54 

0.35 

0. 18 

trace 

0.  30 

0.  06 

0. 15 

ti’ace 

100.03 

Al.  I 

1.217 

.132 

.003 

.020 

.004 

.014 

.079 

.048 

.004 

— 

.002 

— 

5 

71.90 

14. 12 

1.  20 

0.  86 

0.  33 

1. 13 

4.  52 

4.  81 

0.  42 

0. 18 

0.  21 

0.  35 

0. 11 

0.  05 

0.  04 

100.  35 

Al.  I 

1.198 

.138 

.008 

.012 

.008 

.020 

.072 

.051 

.004 

.001 

.001 

— 

6 

77.61 

11.94 

0.  55 

0.  87 

trace 

0.  31 

3.  80 

4.  98 

0.  23 

trace 

0.  25 

trace 

100.  54 

2.  618 

A2.  II 

1.294 

.117 

.004 

.012 

— 

.006 

.061 

0.53 

.003 

— 

18° 

7 

76.  49 

11.  89 

1. 16 

1.  56 

trace 

0. 14 

4.  03 

5.  00 

0.  38 

0. 12 

trace 

trace 

100.  77 

2.650 

A3.  Ill 

1.275 

.117 

.007 

.022 

_ 

.002 

.064 

.053 

— 

13° 

8 

67.  35 

15.05 

1.23 

4.  76 

0.  03 

0.  55 

4.  42 

6.08 

0.17 

0. 16 

0.  60 

0.  05 

100.  45 

2.  69 

A2.  II 

1. 123 

.148 

.008 

.066 

.001 

.010 

•  .071 

.065 

008 

.001 

17° 

9 

77.49 

11.89 

0.  34 

1. 12 

0. 09 

0.  45 

4. 58 

4.  26 

0. 16 

trace 

100.  63 

A3.  Ill 

1.292 

.116 

.002 

.015 

.002 

.008 

.074 

.045 

_ 

10 

76.  44 

12.  95 

0.  19 

0.  89 

trace 

0. 15 

4.  76 

4.  95 

0.09 

— 

0.  37 

trace 

100.  79 

B2.  Ill 

1.274 

.127 

.001 

.012 

— 

.003 

.077 

.053 

.005 

— 

11 

73.  93 

12.29 

2.91 

1.55 

0.  04 

0.  31 

4.  66 

4.  63 

0.  41 

0.  18 

trace 

none 

100.  91 

2.  642 

B2.  Ill 

1. 232 

.120 

.018 

.022 

.001 

.006 

.075 

.049 

.002 

— 

22° 

12 

71.40 

14.  76 

1.68 

0.  72 

0.  55 

0. 10 

4.  79 

5. 16 

1.46 

trace 

100.  62 

A3.  Ill 

1.190 

.145 

.011 

.010 

.014 

.002 

.077 

.055 

— 

PERSALANE - LIPAROSE. 


145 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 

SUBRANG  2.  DOPOTASSIC.  OMEOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  22.2 
or  57. 3 
ab  12. 1 

ns  4.  5 
ac  0.5 
di  0.3 
wo  3.0 

Sodero,  Wand,  Fin¬ 
land. 

H.  Berghell. 

H.  Berghell, 

Finl.  G.  Und.,  Bl.  23, 
p.  18,  1892. 

Microcline- 

granite. 

Alkalies  high? 

Q  31.0 
or  51. 2 
ab  11.0 

ac  2. 7 
di  1.9 
hy  1.2 

Gross-U  mstadt, 

Hesse. 

Not  stated. 

C.  ATogel, 

Abh.  G.  L.-A.  Harms., 
II,  p.  49,  1891. 

Quartz-por¬ 

phyry. 

S03 

0. 12 

Q  13.4 
or  65. 1 
ab  9.4 
an  1. 1 

C  2.3 

hv  1. 3 
il  0.6 
hm  3. 1 

Heckmannsloch, 

Blatt  Wahlen, 
Prussia. 

Gremse. 

H.  Grebe,  Erl.  G.  Kte. 
Preuss.  Bl.  Wahlen, 
p.  29,  1889. 

Quartz-por¬ 

phyry. 

Fe203  and  K20 
high? 

Q  18.0 
or  59. 5 
ab  19. 4 
an  1.7 

di  0.7 

Wilson’s  Creek, 

Omeo,  Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt, 

T.  R.Soe.Vict.,XXIAT, 

p.  120,  1888. 

Graphic  granite. 

Dried  at  100°. 

Q  27.7 
or  38. 4 
ab  15. 2 
an  3.2 

C  5.4 

hy  8.6 
mt  0.  7 

Wilson’s  Creek, 

Omeo,  Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt, 
T.R.Soc.Arict.,XXIV, 

p.  122,  1888. 

Granite. 

Dried  at  100°. 

SUBRANG 

3.  SODIPOTASSIC 

LIPAROSE. 

Zr03 

s 

NiO 

SrO 

LioO 

0.03 

none 

none 

none 

trace 

Q  35.1 
or  26  1 
ab  33. 5 
an  0. 6 

C  0.8 

hy  1.4 
nit  1.2 

Haystack  Mountain, 
Aroostook  County, 
Maine. 

W.  F.  Hille- 
brand. 

H.  E.  Gregory, 

B.  U.  S.  G.  S.,  165, 
p.  155,  1900. 

Rhyolite. 

ZrO., 

FeSo 

Cr.,03 

SrO 

LioO 

0. 04 

0.12 

none 

none 

trace 

Q  32.1 
or  27. 8 
ab  28. 8 
an  0.3 

C  1.3 

hy  5.9 
mt  0. 7 

Quoggy  Joe  Moun¬ 
tain,  Aroostook 
County,  Maine. 

W.  F.  Hille- 
brand. 

H.  E.  Gregory, 

B.  U.  S.  G.  S.,  165, 
p.  166,  1900. 

Bostonite. 

ZrOo 

Cl 

F 

FeSo 

0. 14 

0.02 

0. 05 
none 

q  26.8 

or  28. 9 
ab  37.  7 

ac  0. 9 
di  1.6 
hy  2.2 
mt  1. 2 
i  0.6 

Mount  Ascutney, 
Vermont. 

W.  F.  Hille- 
brand. 

R.  A.  Dalv, 

B.  U.  8.'  G.  S.,  148, 
p.  69,  1897. 

Granite-por¬ 

phyry. 

Zr02 

Cl 

F 

FeS.. 

0. 06 

0. 03 

0. 08 

0.09 

Q  24.9 
or  26. 7 
ab  41. 4 
an  1.4 

di  2.2 
hy  1.6 
mt  0.7 

Mount  Ascutney, 
Vermont. 

W.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  68,  1897. 

Syenite-por¬ 

phyry. 

ZrOo 

Cl  ' 

F 

FeSo 

NiO' 

0.04 

0.02 

0.06 

trace 

none 

Q  24.5 
or  28. 4 
ab  37. 7 
an  4.2 

di  1.1 
hy  0.3 
mt  1.9 
il  0.6 

Mount  Ascutney, 
Vermont. 

W.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  68,  1897. 

Granitite. 

Q  35.4 
or  29. 5 
ab  32. 0 
an  0.8 

di  0.8 
hy  0.2 
mt  0. 9 
il  0.5 

Rockport,  Cape  Ann, 
Massachusetts. 

H.  S.  AVashing- 
ton. 

IJ.  S.  AVashington, 

J.  G.,  VI, 
p.  793,  1898. 

Hornblende- 

granite. 

Q  33.4 
or  29. 5 
ab  33. 5 

di  0.4 
hy  1.8 
mt  1.6 

Magnolia,  Essex 
County,  Massachu¬ 
setts. 

H.  S.  Washing- 
ton. 

H.  S.  AVashington, 

J.  G.,  VII, 

,  p.  113,  1899. 

Paisanite. 

Q  14.2 
or  36. 1 
ab  37. 2 
an  2.8 

hy  6.6 
mt  1.9 
il  1.2 

Pigeon  Hill  Quarry, 
Rockport,  Cape 

Ann,  Massachusetts. 

H.  S.  AATashing- 
ton. 

H.  S.  AA’ashington, 

J.  G„  VI, 
p.  795,  1898. 

Quartz-syenite. 

Inclosure  in 
granite,  No.  6, 
above. 

Q  33.4 
or  25. 0 
ab  37.  7 

ac  0. 9 
di  2.0 
hy  1.2 

Bass  Rocks,  Cape  Ann, 
Massachusetts. 

H.  S.  Washing- 
ton. 

H.  S.  Washington, 

J.  G.,AHI,p.  107, 1899. 

Aplite. 

Dried  at  110°. 
Border  of  dike. 

Q  28.6 
or  29.5 
ab  39. 8 

ac  0. 5 
di  0.8 
hy  0. 5 
il  0.8 

Bass  Rocks,  Cape  Ann, 
Massachusetts. 

H.  S.  AVashing- 
ton. 

H.  S.  AA^ashington, 

J.  G.,  VII, 
p.  107,  1899. 

Aplite. 

Dried  at  110°. 
Center  of  dike. 

Q  28.9 
or  27. 2 
ab37.2 

ac  1. 8 
di  1  5 
hy  0.  4 
mt  3.2 

Hardwicke  Quarry, 
Quincy,  Massachu¬ 
setts. 

Ii.  S.  AVashing- 
ton. 

H.  S.  Washington, 

A.  J.  S.,  VI, 
p.  181,  1898. 

Granite. 

Dried  at  110°. 
Sum  high. 

Q  22.8 
or  30. 6 
ab  40. 3 
an  0. 6 

C  1.1 

hy  1.4 
mt  2.4 

Marblehead  Neck, 
Essex  County,  Mas¬ 
sachusetts. 

H.  S.  AVashing- 
ton. 

H.  S.  Washington, 

J.  G.,  VII, 
p.  293,  1899. 

Keratophyre 

(bostonite). 

Dried  at  110° 

14128— No.  14—03 - 10 


146 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  PERSALANE— Continued. 


RANG  1.  PERALKALIC.  LIPARASE — Continued. 


No. 

SiO, 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

i 

H20+ 

H20- 

C02 

Ti02 

PA 

MnO 

1 

BaO 

Sum 

Sp.  gr. 

13  1 

70.  23 

15.  00 

1.99 

n.  d. 

0.  38 

0.  33 

4.  98 

4.99 

1.28 

0.  91 

0.  03 

0.  06 

0.24 

100. 42 

A3.  Ill 

1.171 

.147 

.012 

(.024) 

.010 

.006 

.080 

.053 

— 

— 

.003 

14 

72.  06 

14.83 

1.28  j 

0.64 

0.13 

1.20 

4.  31 

5.64 

0.  65 

trace 

100. 86 

2.  640 

A3.  Ill 

1.201 

.  145 

.008 

.009 

.004 

.021 

.069 

.060 

• 

— 

15 

68.  96 

15.25 

3.  28 

none 

0.  20 

0.  76 

5. 45 

5.01 

0.  91 

0.  23 

100.  05 

A3.  Ill 

1.149 

.150 

.021 

— 

.005 

►  .014 

.088 

.054  i 

.003 

16 

74.  87 

14.  27 

trace 

0.51 

0.  16 

0.  48 

3.  06 

5.36 

0.  66 

0.  26 

0.  05 

0.21 

trace 

99.  89 

A2.  II 

1.248 

.140 

— 

.007 

.004 

.009 

.049 

.058 

.001 

.002 

— 

17 

72. 17 

14.44 

1.02 

0.  99 

0.  70 

0.  69 

3.  65 

4.  84 

n.d. 

n.  d. 

0.  27 

98.  77 

A2.  II 

1.203 

.142 

.006 

.014 

.018 

.012 

.059 

.051 

.003 

18 

73.70 

12.  87 

3.  76 

0.31 

0. 11 

0. 14 

3.  63 

4.56 

0.57 

trace 

0.  07 

99.84 

A3.  Ill 

1. 228 

.126 

.024 

.004 

.003 

.002 

.058 

.049 

— 

.001 

19 

72.  42 

13.04 

0.  68 

2. 49 

0.  58 

0.  66 

3.44 

4.97 

1.21 

0.  40 

0.  20 

0.  09 

0. 15 

100.  37 

2.  620 

Al.  I 

1.207 

.128 

.004 

.  035 

.015 

.011 

.055 

.  054 

.005 

.001 

.001 

20 

68.  36 

13.  76 

2.  65 

2.  75 

0.  68 

0.  70 

3.  56 

4.48 

0.  98 

1.57 

0.  33 

trace 

100. 48 

Al.  I 

1.139 

.135 

.017 

.039 

.017 

.012 

.057 

.048 

.020 

.002 

— 

21 

72.  35 

13.  78 

1.87 

0.  36 

0.  42 

0.  87 

4.44 

4.  49 

0.  54 

0.  22 

0.  44 

0. 13 

0.  06 

99.  87 

A2.  II 

1.206 

.135 

.012 

.005 

.011 

.016 

.071 

.048 

.006 

.001 

.001 

22 

71.88 

12.  88 

3.  05 

1.05 

0.  33 

1. 13 

4.  21 

4.  46 

0.  26 

0.17 

0.22 

0. 15 

trace 

99.81 

A2.  11 

1.198 

.126 

.019 

.015 

.008 

.020 

.068 

.048 

.003 

.001 

— 

23 

71.33 

12. 55 

3.75 

0.  85 

0. 58 

0.  94 

4.  52 

4.  20 

0.  30 

0. 12 

0.  55 

0. 16 

0.  04 

100.  04 

A2.  II 

1.189 

.123 

.024 

.012 

.015 

.017 

.072 

.045 

.007 

.001 

— 

24 

68.  71 

13. 45 

5.31 

0.  75 

0. 19 

0.  96 

4.  63 

5.51 

0.  36 

0. 13 

0.  21 

0.  04 

0. 14 

none 

100.44 

Al.  I 

1.145 

.132 

.033 

.010 

.005 

.017 

.075 

.059 

.003 

— 

.002 

25 

73.  35 

14.  38 

1.96 

0.34 

0.  09 

0.  26 

4.33 

5.  66 

n.  d. 

n.  d. 

100.  37 

A3.  Ill 

1.223 

.141 

.012 

.005 

j  .002 

.005 

.070 

.060 

26 

68.34 

15.32 

1.90 

0.  84 

0.  54 

0.92 

5.  45 

5.  62 

0.30 

0. 15 

0.  21 

0. 13 

0.07 

0.  08 

99.  95 

Al.  I 

1.139 

.149 

.012 

.012 

.014 

.016 

.089 

.060 

.003 

.001 

.001 

27 

68.  65 

18.31 

0.  56 

0.  08 

0. 12 

1.00 

4.  86 

4.  74 

0.  83 

:  0.27 

0.  20 

trace 

trace 

0. 13 

99.  88 

Al.  I 

1.144 

.180 

.003 

.001 

.003 

.018 

.078 

.050 

.003 

— 

— 

.001 

28 

74.90 

!  13.64 

0.  66 

0.50 

trace 

0.61 

4.  22 

4.  64 

0.  33 

0. 15 

trace 

99.  65 

2.  61 

A2.  II 

1.248 

.134 

.004 

.007 

— 

.011 

.068 

.049 

.002 

— 

29 

74.  82 

13.  80 

0.  37 

0.30 

0. 10 

1  0.17 

4.  33 

4.  81 

0.  83 

0.  25 

trace 

99.  78 

2.  59 

A2.  II 

1.244 

.135 

.002 

.004 

.003 

.003 

.070 

.051 

.003 

— 

PERSALANE - LIPAROSE. 


147 


ORDER  4.  QUARDOFELIC.  BRITANNARE — Continued. 


SUBRANG  3.  SODIPOTASSIC.  LIPAROSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  19.6 
or  29.5 
ab  41.9 
an  1.7 

C  0.8 

hy  4.1 

Marblehead  Neck, 
Essex  County,  Mas¬ 
sachusetts. 

T.  M.  Chatard. 

J.  H.  Sears, 

B.  M.  C.  Z.,  XYI, 
p.  170,  1890.  , 

Keratophyre 

(bostonite). 

s. 

0.12 

Q  23.1 
or  33. 3 
ab  36. 2 
an  4.4 

di  1.1 
nit  1.9 

Brooklyn  Quarry, 
Stony  Creek,  Con¬ 
necticut. 

II.  T.  VultA 

J.  F.  Kemp, 

B.  G.  S.  A.,  X, 
p.  375,  1899. 

Granite. 

Q  16.2 
or  30. 0 
ab  46. 1 
an  2. 2 

di  1.3 
hm  3.3 

Beekmantown,  Clin¬ 
ton  County,  New 
York. 

E.  W.  Morley. 

11.  P.  Cushing, 

B.  G.  S.  A.,  IX, 
p.  248,  1898. 

Syenite-por¬ 

phyry. 

Li20 

trace 

Q  34.6 
or  32. 2 
ab  25. 7 
an  2. 5 

C  2.4 

by  1.4 

Brookville,  Mont¬ 
gomery  County, 
Maryland. 

W.  F.  Hille- 
brand. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  672,  1895. 

Granite. 

Q  29.6 
or  28. 4 
ab  30. 9 
an  3.3 

C  2.0 

hy  2.9 
nit  1.4 

Felch  Mountain, 
Michigan. 

H.  N.  Stokes. 

H.  L.  Smith, 
M.U.S.G.S.,  XXXVI, 
p.  389,  1899. 

Granite. 

H20  not  deter¬ 
mined. 

Q  34.7 
or  27. 2 
ab  30. 4 
an  0. 6 

C  1.7 

hy  0.3 
mt  0.9 
hm  3. 2 

Little  Brick  Island, 
Pigeon  Point,  Min¬ 
nesota. 

L.  G.  Eakins. 

AY.  S.  Bayley, 

B.  U.  S.  G.  S.,  109, 
p.  58,  1893. 

Quartz- kerato¬ 
phyre. 

Dried  at  105°. 

Cl 

LioO 

trace 

trace 

Q,  29.4 
or  30.0 
ab  28. 8 
an  3.2 

C  0.8 

hy  5.0 
mt  0. 9 
il  0.8 

Pigeon  Point,  Minne¬ 
sota. 

W.  F.  Hille- 
brand. 

W.  S.  Bayley, 

A.  J.  S.,  XXXVII, 
p.  59,  1889. 

Soda-granite. 

Dried  at  105°. 
Seven  speci¬ 
mens. 

so3 

Li»0 

0. 66 
none 

Q  28.0 
or  26. 7 
ab  29. 9 
an  3.3 

C  1.8 

hy  1.9 
mt  3.9 
il  3.1 

Pigeon  !Point,  Minne¬ 
sota. 

J.  E.  Whitfield. 

W.  S.  Bayley, 

B.  U.  S.  G.  S.,  109, 
p.  90,  1893. 

Granite. 

Dried  at  105°. 
“Altered.” 

NiO 

0.20 

Q  26.9 
or  26. 7 
ab  37. 2 
an  4.4 

hy  1.1 
il  0.8 
hm  1. 9 

Six  miles  east  of  Iron- 
ton,  Missouri. 

W.H.  Melville. 

E.  Haworth, 

A.  R.  Mo.  G.  S.,  VIII, 
p.  181,  1895. 

Granite. 

NiO 

0.02 

Q  27.7 
or  26. 7 
ab  35. 6 
an  2.8 

di  2.2 
mt  2.8 
il  0. 5 
hm  1.1 

Six  miles  east  of  Iron- 
ton,  Missouri. 

W.  H.  Melville. 

E.  Haworth, 

A.  R.  Mo.  G.  S.,  VIII, 
p.  181,  1895. 

Quartz-por¬ 

phyry. 

NiO 

0. 15 

Q  26.6 
or  25. 0 
ab37. 7 
an  3. 1 

di  1.2 
hy  0.9 
mt  1. 2 
il  1.1 
hm3. 0 

Six  miles  east  of  Iron- 
ton,  Missouri. 

W.  H.  Melville. 

E.  Haworth, 

A.  R.  Mo.  G.  S., VIII, 
p.  181,  1895. 

Quartz-por¬ 

phyry. 

so3 

SrO 

LioO 

0. 06 

none 

none 

Q  18.7 
or  32. 8 
ab  38. 3 

ac  0. 9 
di  4. 0 
mt  2.4 
il  0.5 

Yieja  Mountains,  San 
Carlos,  Presidio 
County,  Texas. 

G.  Steiger. 

E.  C.  E.  Lord, 

B.  U.  S.  G.  S.,  164, 
p.  92,  1900. 

Quartz-pan  tel- 
lerite. 

Q  25.9 
or  33. 4 
ab  36. 7 
an  1. 4 

C  0.6 

hy  0.2 
mt  1.2 
hm  1. 1 

Mosquez  Canyon, 
Apache  Mountains, 
Transpecos,  Texas. 

A.  Osann. 

A.  Osann, 

T.  M.  P.  M.,  XV, 
p.  439,  1895. 

Paisanite. 

Cl 

F 

SrO 

Li.,0 

0.04 

none 

0. 04 
none 

Q  12.9 
or  33. 4 
ab  46. 6 

di  2.4 
mt  2.1 
il  0.5 
hm  0. 5 

Beaver  Creek  Stock, 
Bearpaw  Moun¬ 
tains,  Montana. 

H.  N.  Stokes. 

Weed  and  Pirsson, 

A.  J.  S.,  I,  p.  354, 1896. 

Quartz-syenite. 

so3 

Cl 

F 

SrO 

LioO 

trace 

0. 03 
trace 
0.10 
trace 

<4  20.2 
or  27. 8 
ab  40. 9 
an  5.0 

C  3.5 

hy  0.3 
mt  0.  2 
hm  0. 4 

Antoine  Butte,  Little 
Rocky  Mountains, 
Montana. 

11.  N.  Stokes. 

Weed  and  Pirsson, 

J.  G.,  IV,  p.  414, 1896. 

Quartz-syenite- 

porphyry. 

Near  toscanose. 

Q  31.3 
or  27. 2 
ab  35. 6 
an  3. 1 

C  0.6 

hy  0.4 
mt  0.9 

Fourmile  Creek,  Cas¬ 
tle  Mountains, 
Montana. 

L.  Y.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  120,  1896. 

Rhyolite. 

LioO 

trace 

Q  30.6 
or  28. 4 
ab  36. 7 
an  0.8 

C  1.1 

hy  0.3 
mt  0.5 
il  0.5 

Fourmile  Creek,  Cas¬ 
tle  Mountains, 
Montana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  101,  1896. 

Quartz-tou  rma- 
line-por- 
phyry. 

148 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 

RANG  1.  PERALKALIC.  LIPARASE— Continued. 


No. 

Si02 

A12Os 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

f2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

30 

72.  88 

12.90 

0.  74 

1.05 

0.  75 

0.81 

3.  72 

5.  03 

1.22 

0.  45 

0.  05 

99.  CO 

2.64 

A2.  II 

1.215 

.126 

.005 

.015 

.019 

.014 

.060 

.054 

.006 

.001 

31 

72.48 

13. 14 

1.  66 

1.02 

0.15 

1.04 

4.  22 

4.88 

0.  42 

0.  32 

trace 

99.  33 

2.62 

A2.  II 

1.208 

.129 

.010 

.014 

.004 

.019 

.068 

.052 

.004 

— 

32 

72.  38 

14.  71 

1.09 

0.  82 

0.  70 

0.67 

4.  28 

4. 15 

0.  92 

0. 10 

trace 

99.  82 

2.61 

A2.  II 

1.206 

.144 

.007 

.011 

.018 

.012 

.069 

.044 

.001 

33 

71.67 

15.  82 

1.18 

0.  35 

0. 13 

0.  25 

4.  46 

4.  45 

1.21 

0. 10 

trace 

99.62 

2.60- 

A2.  II 

1. 195 

.  155 

.007 

.005 

.003 

.004 

.072 

.047 

.001 

— 

34 

75.  30 

11.95 

2.17 

n.  d. 

0.  05 

0.  62 

3.09 

4.  96 

0.  61 

0.  36 

none 

0. 17 

trace 

trace 

trace 

100. 17 

A2.  II 

1.255 

.117 

.014 

(.028) 

.001 

.011 

.050 

.054 

.002 

— 

— 

— 

35 

75.  71 

11.11 

1.56 

0.  37 

0.  08 

0.  88 

4.  64 

4.18 

0.  35 

1.25 

0. 07 

100.  20 

A2.  II 

1.262 

.109 

.010 

.005 

.002 

.016 

.075 

.045 

.016 

.001 

36 

74.  70 

13.  72 

1.01 

0.  62 

0. 14 

0.  78 

3.  90 

4.02 

0.  62 

none 

none 

trace 

99.91 

2.  345 

A2.  II 

1.245 

.134 

.006 

.008 

.004 

.014 

.063 

.042 

— 

— 

37 

70.  92 

13.  24 

3.  54 

0.  66 

0.  23 

1.42 

4.  28 

4.  25 

0.57 

0. 16 

0. 18 

0. 14 

100.  59 

A2.  II 

1.199 

.130 

.022 

.010 

.006 

.025 

.069 

.046 

.002 

.001 

.002 

38 

74.  45 

14.  72 

none 

0.  56 

0.  37 

0.  83 

3.  97 

4.  53 

0.  66 

0.  01 

0.  28 

100.  38 

A2.  II 

1.241 

.144 

— 

.008 

.009 

.014 

.064 

.048 

— 

.004 

39 

69.89 

17.94 

0.  39 

0.  52 

0. 14 

trace 

4.21 

4.  38 

2.  07 

trace 

0.  23 

99.  77 

2.  602 

A3.  Ill 

1.165 

.176 

.002 

.007 

.004 

_ 

.068 

.047 

— 

.003 

29° 

40 

71.56 

13. 10 

0.  66 

0.  28 

0. 14 

0.  74 

3.  77 

4.  06 

5.52 

0. 16 

99.  99 

A3.  Ill 

1.193 

.128 

.004 

.004 

.004 

.012 

.061 

.043 

.002 

41 

67. 13 

18.41 

0.  45 

0.  07 

0.  44 

0.  55 

4. 17 

5.  28 

2.  98 

0.  30 

trace 

trace 

99.  78 

A2.  II 

1.119 

.180 

.003 

.001 

.011 

.010 

.068 

.057 

.004 

— 

— 

42 

75. 17 

12.  66 

0.  23 

1.40 

0.  05 

0.  82 

2.  88 

5.  75 

0.  66 

0. 16 

0. 10 

0.  03 

trace 

0.03 

100.  26 

Al.  I 

1.253 

.124 

.001 

.019 

.001 

.014 

.047 

.062 

.001 

— 

— 

43 

73.51 

13.  28 

0.94 

0.  97 

0.  05 

1.11 

3.  79 

5.  22 

0.  62 

0. 16 

0.18 

trace 

trace 

trace 

100.  38 

Al.  I 

1.225 

.130 

.006 

.014 

.001 

.020 

.061 

.056 

.  002 

— 

— 

— 

44 

70.17 

11.83 

0.  93 

none 

0. 06 

0.  76 

3.  85 

3.  74 

8.  72 

0.17 

100.23 

2.25 

A2.  II 

1.170 

.116 

.006 

— 

.002 

.013 

.062 

.040 

.002 

23. 5° 

45 

76.  20 

13.17 

0.34 

0.  73 

0. 19 

0.  42 

4.31 

4.  46 

0.  33 

0. 10 

100.  25 

A3.  Ill 

1. 270 

.129 

.002 

.010 

.005 

.007 

.069 

.048 

.001 

46 

76. 30 

12. 50 

1.47 

n.d. 

none 

0. 17 

3.  86 

4.  67 

0.32 

0. 18 

none 

0.  05 

trace 

trace 

6.  07 

99.  59 

A2.  II 

1.272 

.122 

.009 

(.018) 

— 

.003 

.062 

.050 

.001 

_ 

_ __ 

PERSALANE — -LIPAROSE. 


149 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  LIPAROSE— Continued. 


Inclusive. 

• 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  2S.6 
or  30. 0 
ab31. 4 
an  3.3 

di  0.4 
hy  3. 0 
xnt  1.2 

Between  Blackhawk 
and  Robinson,  Cas¬ 
tle  Mountains, 
Montana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  96,  1896. 

Aplitic  granite. 

Q  27.4 
or  28. 9 
ab  35. 6 
an  2. 5 

di  0.8 
hy  0.8 
mt  2.9 

Elk  Peak,  Castle 
Mountains,  Mon¬ 
tana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  84,  1896. 

Granite. 

Sum  low. 

Li20 

trace 

Q  28.9 
or  24.  5 
ab  36. 2 
an  3.3 

C  1.9 

hy  2.3 
mt  1.  6 

Ridge  between  Four- 
mile  and  Checker¬ 
board  Creeks,  Cas¬ 
tle  Mountains, 
Montana. 

L.  Y.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  99,  1896. 

Quartz-por¬ 

phyry. 

LioO 

trace 

Q.  28. 2 
or  26. 1 
ab37.  7 
an  1.1 

C  3.3 

hy  0.3 
mt  1. 5 

Musselshell  River, 
Castle  Mountains, 
Montana. 

L.  Y.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  103,  1896. 

* 

Quartz-por¬ 

phyry. 

so3 

Cl 

SrO 

LioO 

Ofg 

0.44 

trace 

none 

trace 

0. 45 

Q  35.0 
or  30.  0 
ab  26. 2 
an  3. 1 

C  0.2 

hy  3.5 
il  0.3 

Red  Mountain,  Rimi¬ 
ni,  Butte  District, 
Montana. 

PI.  N.  Stokes. 

W.  H.  Weed, 

B.  U.  S.  G.  S.,  168, 
p.  119,  1900. 

Rhyolite. 

Q  32.6 
or  25. 0 
ab  34. 1 

ac  4. 6 
di  0.4 
wo  1.6 
il  0.8 
ru  0. 9 

Great  Paint  Pots, 
Yellowstone 
National  Park. 

F.  A.  Gooch. 

Hague  and  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  131,  1897. 

Rhyolite. 

Ti02  high? 

FeS2 

0.40 

Q  34.9 
or  23. 4 
ab  33. 0 
an  3.9 

C  1.5 

hy  0.8 
mt  1.4 
pr  0.4 

Obsidian  Cliff, 
Yellowstone 
National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

7  A.  R.  U.  S.  G.  S., 

p.  282,  1888. 

Obsidian 

(black). 

• 

Q  27.8 
or  25. 6 
ab  36. 2 
an  4.2 

di  1.3 
wo  0. 5 
mt  2.3 
hm  1.9 

Upper  Geyser  Basin, 
Yellowstone 
National  Park. 

F.  A.  Gooch. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  426,  1899. 

Rhyolite. 

Li,0 

trace 

Q  31.4 
or  26. 7 
ab  33. 5 
an  3. 9 

C  1.8 

hy  2.0 

Chalk  Mountain, 
Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

M.  U.  S.  G.  S.,  XII, 
p.  349,  1886. 

Nevadite. 

Li20 

trace 

Q  28.0 
or  26. 1 
ab  35. 6 

C  6.2 

hy  1.1 
mt  0. 5 

Arkansas  River, 
Nathrop,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

Pr.  Colo.  Sc.  Soc., 

II,  p.  69,  1887. 

Rhyolite. 

Q  32.5 
or  23.  9 
ab  32. 0 
an  3.3 

C  1.2 

hy  0.3 
mt  1.0 

Fleetwood  Tunnel, 
Silver  Cliff,  Colo¬ 
rado. 

• 

L.  G.  Eakins. 

W.  Cross, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  320,  1896. 

Pitchstone. 

Q  20.3 
or  31.7 
ab  35. 6 
an  2. 8 

C  4.6 

hy  1. 1 
il  0.2 
hm  0. 5 

Knickerbocker  Hill, 
Silver  Cliff,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

17  A.  R.  TJ.  S.  G.  S., 
II,  p.  321,  1896. 

Andesite. 

“Decomposed.” 

F 

SrO 

LioO 

0. 31 

trace? 

trace 

Q  33.0 
or  34. 5 
ab  24. 6 
an  4.2 

hy  2.5 
mt  0.2 

South  side  Pike’s 

Peak,  Colorado. 

W.  F.  Hille- 
brand. 

E.  B.  Mathews, 

B.  U.  S.  G.  S.,  148, 
p.  160,  1897. 

Granitite. 

F 

SrO 

Li20 

0.55 

none 

trace 

Q  28.9 
or  31. 1 
ab  32. 0 
an  3.6 

di  1.9 
mt  1.4 

Middle  Beaver 

Creek,  Pike’s 

Peak,  Colorado. 

W.  F.  Hille- 
brand. 

E.  B.  Mathews, 

B.  U.  S.  G.  S.,  148, 
p.  160,  1897. 

Granitite. 

Q  31.8 
or  22. 2 
ab  32. 5 
an  3.6 

hy  0.2 
hm  0.9 

Near  Marysvale,  Utah. 

W.  F.  PI i lie- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  168,  1900. 

Rhyolitic  glass. 

Much  H20. 

Q  32.5 
or  26.  7 
ab  36. 2 
an  1.9 

C  0.5 

hy  1.6 
mt  0.5 

Obsidian  Hill, 

Tewan  Mountains, 
New  Mexico. 

L.  G.  Eakins. 

J.  P.  Iddings, 

7  A.  R.  U.  S.  G.  S., 
p.  291,  1888. 

Obsidian. 

SrO 

LioO 

none 

none 

Q  34.6 
or  27. 8 
ab  32. 5 
an  0.8 

hy  2.4 

Chilkoot  Pass, 

Alaska. 

H.  N.  Stokes. 

J.  E.  Spurr, 

A.  G.,  XXV, 
p.  231,  1900. 

Alaskite. 

150 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 
RANG  1.  PERALKALIC.  LIPARASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na2Q 

K20 

h20+ 

O 

HH 

HM 

co2 

TiG2 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

47 

75.  78 

12.  39 

0.  22 

1.  25 

0.  31 

0.81 

4.  00 

4.64 

0.41 

99.81 

A3.  Ill 

1.263 

.121 

.010 

.018 

.008 

.014 

.064 

.050 

48 

74.  05 

13.85 

trace 

none 

0,07 

0.  90 

4.  60 

4.  31 

2.  20 

99.  98 

A3.  Ill 

1.234 

.136 

— 

— 

.002 

.016 

.074 

.046 

49 

74.  01 

12.  95 

n.  d. 

1.42 

0.  48 

1.00 

5.  34 

4.65 

0.  29 

0.  24 

0.01 

trace 

100.  46 

A3.  Ill 

1.234 

.127 

(.008) 

(.  003) 

.012 

.018 

.085 

.050 

.003 

— 

50 

75.  23 

12.  36 

0.  96 

1.24 

0.  01 

1.00 

4.  00 

4.  62 

0.  73 

0.  27 

100.  42 

A3.  Ill 

1.254 

.121 

.006 

.017 

— 

.018 

.064 

.049 

.002 

51 

72. 15 

13.50 

3. 12 

n.d. 

0. 16 

0.  93 

4.  20 

4.  54 

0.  85 

0.45 

99.  90 

A3.  Ill 

1.203 

.132 

.020 

(.040) 

.004 

.016 

.068 

.048 

.006 

52 

74.40 

13.91 

1.39 

n.  d. 

0.  28 

0.  61 

4.  65 

4.  36 

0.  65 

100.  25 

A3.  Ill 

1.240 

.136 

.009 

(.018) 

.007 

.011 

.075 

.047 

53 

76.  05 

11.68 

0.34 

1.05 

0.29 

0.  42 

3.  79 

5.  09 

1.36 

0.  05 

trace 

100.  54 

2.  636 

A2.  II 

1.268 

.114 

.002 

.015 

.007 

.008 

.060 

.054 

.001 

— 

54 

71.49 

15.  33 

2. 15 

n.  d. 

none 

0.  30 

4.  32 

5.  86 

0.54 

0.  45 

trace 

100.  44 

A3.  Ill 

1.-192 

.150 

.014 

(.028) 

— 

.005 

.070 

.062 

.006 

— 

55 

69.  00 

13.  95 

1.56 

2.  38 

0. 14 

0.  49 

5.  67 

5.11 

0.  70 

0.  35 

0.55 

99.  95 

• 

A2.  II 

1.150 

.137 

.010 

.033 

'  .004 

.009 

.091 

.054 

.004 

.008 

56 

68.  95 

14.  00 

2. 12 

3. 56 

0.  07 

0.  23 

5.45 

5.29 

0.  05 

0.  35 

0.  55 

100.  62 

A2.  II 

1.149 

.137 

.013 

.049 

.002 

.004 

.088 

.056 

.004 

.008 

57 

66.  40 

17.  37 

4.  30 

0.  50 

0.  20 

0.  75 

3.  88 

4.  39 

0.  50 

1.00 

0. 11 

99.  40 

B2.  Ill 

1.107 

.170 

.027 

.  .Q07 

.005 

.014 

.063 

.047 

.012 

.001 

58 

76.  64 

13.  50 

0.  50 

n.  d. 

0. 12 

0.  65 

3.  48 

5.51 

n.  d. 

100.  40 

A3.  Ill 

1.244 

.132 

.003 

(.006) 

003 

.011 

.056 

.059 

59 

72.  78 

12.  79 

2.57 

1.  73 

0.  27 

0.  64 

3. 17 

5. 16 

0.  55 

0. 50 

0. 18 

100.  34 

A2.  II 

1.213 

.125 

.016 

.024 

.007 

.012 

.051 

.056 

.006 

.003 

60 

72.  22 

14.  80 

0.  96 

0.  80 

0.  33 

0.  74 

4. 16 

5. 16 

0.  71 

0.57 

0.13 

100.  58 

A2.  II 

1.204 

.145 

.006 

.011 

.008 

.013 

.067 

.056 

.007 

.002 

61 

71.25 

13.  90 

1.28 

1.24 

0.  45 

0.97 

3.  29 

6.  28 

0.  83 

0.  32 

trace 

99.81 

A2.  II 

1.188 

.136 

.008 

.017 

.011 

.018 

.053 

.067 

.004 

— 

62 

69.  73 

13.  02 

2.  28 

1.92 

0.21 

1. 16 

3. 08 

5.  78 

1.94 

0.  38 

0.  29 

trace 

99.  79 

A2.  II 

1.162 

.127 

.014 

.027 

.005 

.021 

.050 

.062 

.004 

— 

63 

71.51 

12.  82 

2.  09 

1.40 

0.17 

1.09 

4.  24 

4.  52 

1.23 

0.  10 

trace 

99.17 

B2.  Ill 

1.192 

.125 

.013 

.019 

.004 

.020 

.068 

.048 

.001 

— 

64 

76. 03 

11.76 

1.99 

n.  d. 

0.  27 

0.  45 

3.  36 

5.  61 

0.  63 

100. 10 

A3.  Ill 

1.267 

.115 

.013 

(.026). 

.007 

.008 

.054 

.060 

PERSALANE - LIPAROSE. 


151 


ORDER  4.  QUARDOFELIC.  BRITANNA  RE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  LIPAROSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  32.5 
or  27.8 
ab  33. 5 
an  1. 9 

di  1. 6 
hv  1. 1 
mt  2.3 

Mono  Lake,  Cali¬ 
fornia. 

W.  H.  Melville. 

W.  Lindgren, 

B.  U.  S.  G.  S.,  150, 
p.  151,  1898. 

Rhyolite- 

obsidian. 

Q  28.8 
or  25. 6 
ab  38. 8 
an  4.4 

hy  0.2 

Mono  Craters,  Cali¬ 
fornia. 

T.  M.  Chatard. 

I.  C.  Russell, 

8  A.  R.  U.  S.  G.S., 
p.  380,  1888. 

Rhyolite. 

Scoriaceous. 

Cl  0.07 

Q  24.6 
or  27.8 
ab  40. 3 

ac  3.  i 
di  3. 3 
il  0. 5 

Clear  Lake,  Cali¬ 
fornia. 

W.  H.  Melville. 

G.  F.  Becker, 

M.  U.  S.  G.  S.,XIII, 
p.  154,  1888. 

Andesite- 

obsidian. 

Q  32.3 
or  27. 2 
ab33.  5 
an  2.2 

di  2. 7 
mt  1. 4 

Cerro  de  los  Navajos, 
n.  Tulacingo, 
Mexico. 

F.  Baerwald. 

C.  A.  Tenne, 

Z.  D.  G.G.,  XXXVII, 
p.  616,  1885. 

Obsidian. 

Cf.  No.  11, 
kallerudose. 

Q  26.2 
or  26. 7 
ab35. 6 
an  4. 4 

hy  5.0 
il  0.9 

Mafalidh,  Sniiffels 
Penins.,  Iceland. 

H.  Biickstrom. 

H.  Biickstrom, 

G.  F.  F.,  XIII, 
p.  651,  1891. 

Granophyre. 

Q  27.8 
or  26. 1 
ab  39. 3 
an  2.8 

U  0.4 

hy  3.1 

Pelvoux,  France. 

P.  Termier? 

P.  Termier, 

C.  R.,  CXXIV, 
p.  318,  1897. 

Granite. 

Zr02  0. 42 

F  trace 

Li20  trace 

Q  33.4 
or  30. 0 
ab31.4 

di  2.0 
hy  1.5 
mt  0.5 

Drammen,  Norway. 

- 

P.  Jannasch. 

H.  O.  Lang, 

Nyt  Mag.,  XXX, 
p.  40,  1886. 

Quartz- 

porphyry. 

Zr02  high? 

Q  22.1 
or  34. 5 
ab  36. 7 
an  1.4 

C  1.3 

hy  3.2 
il  0.9 

Gislerud,  Norway. 

R.  Mauzelius. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  46,  1890. 

Quartz- 

porphyry. 

Q  15.4 
or  30. 0 
ab43. 5 

ac  3. 7 
di  2.2 
hy  2.9 
mt  0.5 
il  0.6 

Fron,  Christiania, 
Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  I, 
p.  139,  1894. 

Quartz- 

lindoite. 

Center  of  dike. 
Near  kalleru¬ 
dose. 

Q  15.0 
or  31. 1 
ab  42. 4 

ac  3.2 
di  0.9 
hy  5.6 
mt  1.4 
il  0.6 

Fron,  Christiania, 
Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  I, 
p.  139,  1894. 

Arfvedsonite- 

grorudite. 

Border  of  dike. 

Q  25.1 
or  26. 1 
ab  33. 0 
an  2.5 

C  4.7 

hy  0.5 
tn  1.0 
il  1.1 
hm4. 3 

Fjelebua,  Norway. 

G.  Siirnstrom. 

W.  C.  Brogger, 

Z.  K.,  XYI, 
p.  46,  1890. 

Quartz-syenite- 

porphyry. 

A1203,  Fe203, 
and  Ti02 
high? 

Q  31.4 
or  32. 8 
ab  29. 3 
an  3. 1 

C  0.6 

hy  1.0 

Arild,  Kullen, 

Sweden. 

A.  Hennig. 

A.  Hennig, 

Act.  Univ.  Lund, 
XXXIV,  1898. 

Granitite. 

Q  32.4 
or  31.1 
ab  26. 7 
an  3.1 

C  0.8 

hy  1.0 
mt  3.7 
il  0.9 

Storholm,  n.  Rodo, 
Sweden. 

H.  Santesson. 

P.  J.  Holmquist, 

Afh.  Sver.  G.  Und., 

No.  181,  p.  38, 1899. 

Felsite- 

porphyry. 

Q  25.9 
or  31. 1 
ab  35. 1 
an  3.6 

C  0.9 

hy  0.8 
mt  0. 9 
il  1.1 

Storholm,  n.  Rddo, 
Sweden. 

H.  Santesson. 

P.  J.  Holmquist, 

Afh.  Sver.  G.  Und., 

No.  181,  p.  51,  1899. 

Quartz- 

porphyry. 

Q  25.1 
or  37. 3 
ab  27. 8 
an  4. 4 

di  0.4 
hy  1.4 
mt  2.5 

Rodo,  Sweden. 

N.  Sahlbom. 

P.  J.  Holmquist, 

Afh.  Sver.  G.  Und., 

No.  181,  p.  25,1899. 

Rapakiwi  gran¬ 
ite-porphyry. 

Dried  at  100°. 

Q  26.3 
or  34. 5 
ab  26. 2 
an  4.2 

di  1.5 
hy  1.0 
mt  3.2 
il  0.6 

Gorgvik,  Sweden. 

N.  Sahlbom. 

P.  J.  Holmquist, 

Afh.  Sver.  G.  Und., 

No.  181,  p.  34, 1899. 

Felsite- 

porphyry. 

Q  27.5 
or  26. 7 
ab  35. 6 
an  2.5 

di  2.5 
mt  3.0 

Siiterstugen,  Brefven, 
Sweden. 

K.  Winge. 

K.  Winge, 

G.  F.  F.,  XVIII, 
p. 195, 1896. 

Granite. 

Sum  low. 

Q  32.5 
or  33. 4 
ab  28. 3 
an  0.  3 

di  1.7 
hy  3.3 

Thai,  Thiiringerwald, 
Baden. 

Not  stated. 

K.  Futterer, 

M.  Bad.  G.  L-A.,  II, 
p. 58, 1893. 

Quartz- 

porphyry. 

152 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 

RANG  1.  PERALKALIC.  LIPARASE— Continued. 


No. 

Si02 

A1A 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

65 

70.  85 

15.  79 

1.20 

1.27 

trace 

0.  26 

3.37 

6.  69 

0.89 

trace 

0.  22 

trace 

100.  60 

2.  599 

A2.  II 

1.181 

.155 

.007 

.018 

.005 

.  055 

.071 

.003 

■  — 

66 

66.  28 

16.64 

1. 18 

1.68 

0.84 

0.  52 

3.91 

6.  43 

1.45 

0.17 

0.  61 

0. 17 

100.  01 

2.588 

A2.  II 

1. 105 

.163 

.007 

.024 

.021 

.009 

.063 

.068 

.008 

.001 

67 

68.  60 

16.  76 

0.  93 

0.  52 

0.  79 

0.86 

4.  49 

6.  46 

0.  78 

100. 19 

2.  602 

A3.  Ill 

1.143 

.164 

.006 

.007 

.020 

.015 

.072 

.069 

68 

75.  97 

10.  84 

n.  d. 

2.  03 

0. 16 

1.01 

4.23 

4.  91 

0.49 

99.64 

A3.  Ill 

1.266 

.106 

(.014) 

.028 

.004 

.018 

.068 

.052 

69 

73.  77 

14.  13 

0.  80 

0.  75 

0. 27 

0.35 

2.  75 

5.99 

1.29 

0. 10 

0. 18 

100.  46 

2.622 

A2.  II 

1.230 

.138 

.005 

.010 

.007 

.006 

.044 

.064 

.001 

.001 

70 

74.97 

12.  58 

0.  26 

1.41 

0. 10 

0.  93 

2.  75 

5.  74 

0.  52 

0.  26 

trace 

99.52 

2.  605 

A2.  II 

1.250 

.123 

.002 

.019 

.003 

.016 

.044 

.061 

.003 

— 

71 

74.  03 

13.87 

0.  09 

0.  95 

0. 15 

0.  30 

3.71 

6. 14 

1. 17 

trace 

0. 27 

100.  68 

2.  662 

A2.  II 

1.234 

.136 

.001 

.013 

.004 

.005 

.059 

.065 

— 

.002 

72 

72.  68 

16.  10 

2. 19 

n.d. 

0.21 

0.  58 

3.39 

4.  46 

0.  52 

. 

100. 13 

A4.  IV 

1.211 

.158 

.014 

(.028) 

.005 

.010 

.  055 

.048 

73 

67.04 

16.00 

2.11 

1.55 

0.  69 

1.00 

4.  65 

5.49 

1.53 

none 

0. 92 

100.  95 

A2.  II 

1. 117 

.157 

.013 

.  022 

.017 

.018 

.075 

.059 

.011 

74 

74.  76 

11.60 

3.50 

0. 19 

0. 18 

0.  07 

4.  35 

4.  92 

0.  64 

trace 

trace 

100.  21 

A3.  Ill 

1.246 

.114 

.022 

.003 

.005 

.001 

.070 

.052 

75 

74.37 

12.  65 

2.  58 

n.  d. 

0.  20 

1.22 

3.  87 

4.  57 

0.  22 

0.02 

99.  70 

A4.  IV 

1.240 

.124 

.016 

(.032) 

.005 

.021 

.063 

.049 

' 

76 

75.  06 

11.  70 

1.04 

1.  57 

0. 19 

1.01 

2.  56 

6.-25 

0.  63 

0.  36 

100.  37 

A3.  Ill 

1.251 

.115 

.006 

.022 

.005 

.018 

.041 

.  067 

.004 

77 

74.57 

12.  58 

2.  77 

n.  d. 

0.  30 

0.  35 

3.98 

3.  70 

1.04 

99.  29 

B4.  V 

1.243 

.123 

.017 

(.034) 

.008 

.006 

.064 

.040 

78 

76.  82 

12.  46 

1.06 

n.  d. 

0.  05 

1.35 

2.  85 

5.  71 

0.  24 

100.  54 

A3.  Ill 

1.280 

.122 

.007 

(.014) 

.001 

.024 

.046 

.061 

79 

76.01 

11.96 

2.  06 

n.  d. 

trace 

0.  26 

4.  46 

4.  73 

0.  28 

trace 

99.  76 

2.  58 

A3.  Ill 

1.267 

.117 

.013 

(.016) 

— 

.004 

.072 

.050 

— 

80 

75.  74 

12.  45 

1.02 

n.  d. 

0.  08 

1.00 

2.91 

6.  77 

0.  33 

100. 30 

A3.  Ill 

1.262 

.122 

.006 

(.012) 

.002 

.018 

.047 

.072 

81 

74. 12 

12.  39 

0.31 

0.21 

0.  42 

0.  30 

3.  22 

5. 07 

2. 17 

9  22 

trace 

trace 

100.  33 

A3.  Ill 

1.235 

.121 

.002 

.003 

.011 

.005 

.052 

.055 

— 

— 

PERS  A  LANE — LIPAROSE. 


153 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  LIPAROSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03  0.  oc 

Q  24.4 
or  39. 5 
ab  28. 8 
an  1.4 

C  2.4 

hy  1.1 
rat  1.  6 
il  0. 5 

Tanngrund,  Schleuse 
Thai,  Thiiringer- 
vvald,  Baden. 

Schade. 

H.  Loretz, 

Jb.  Pr.  G.  L-A.,  IX, 
p. 295,  1889. 

Quartz- 

porphyry. 

S( );,  for  S. 

S03  0. 13 

Q  16.3 
or  37. 8 
ab  33. 0 
an  2.5 

C  2.3 

hy  3.3 
mt  2.  9 

Schleuse  River, 
Thiiringerwald, 
Baden. 

G.  F.  Steffen. 

H.  Loretz, 

Jb.  Pr.  G.  L-A.,  IX, 
p. 290, 1889. 

Granite- 

porphyry. 

SOs  for  S. 

Q  15.2 
or  37. 8 
ab  37. 7 
an  4.2 

C  0.8 

hy  2.0 
mt  1.5 

Gierniger  Loch, 

Baden. 

M.  Dittrich. 

F.  Schalck, 

Sp.  Kte.,  Baden,  Bl. 
Petersthal,  p.  33, 1895. 

Granite. 

Center  of  dike; 
cf.  No.  2,  SR  2 
of  dacase. 

Q  28.1 
or  28. 9 
ab  35. 6 

ac  5. 5 
di  0.9 
wo  1.6 

New  Dreibrunnen, 
Odenwald, 

Hesse. 

F.  Kutscher. 

C.  Chelius, 

Not.  bl.  Ver.  Erdk., 
XIII,  p.8,  1892. 

Aplite. 

S03  0. 08 

Q  33.5 
or  35. 6 
ab  23. 1 
an  1. 7 

C  2.4 

hy  1.4 

mt  1.2 

Magdeburg,  Prussia. 

Fischer. 

F.  Klockmann, 

Jb.  Pr.  G.  L-A.,  XI, 
p.  186,  1892. 

Quartz-por¬ 
phyry  brec¬ 
cia. 

S03  for  S. 

S03  trace 

Q  34.1 
or  33. 9 
ab  23. 1 
an  4.4 

C  0.2 

hy  2.5 
mt  0.5 
il  0.5 

Meineckenberg,  Harz 
Mountains. 

Hampe. 

K.  A.  Lossen, 

Z.  D.  G.  G.,  XL, 

p.  20-1,  1888. 

Granite-por¬ 

phyry. 

S03  for  S. 

F  trace 

Li20  trace 

Cu  trace 

Q  27.8 
or  36. 1 
ab  30. 9 
an  1.4 

C  0.7 

hy  2.1 
mt  0.2 

Kleiner  Ivornberg, 
Erzgebirge. 

A.  Bottger. 

F.  Sandberger, 

Sb.  Munch.  Ak, 

XVIII,  p.  466,  1888. 

Lithionite- 

granite. 

Q  32.4 
or  26. 7 
ab  28. 8 
an  2. 8 

C  4.6 

hy  4.2 

Veitsberg,  Karlsbad, 
Bohemia. 

A.  Schwager.? 

Schwager  and  V.  Gum- 
bel,  Geogn.  Jhft., 

VII,  p.  69,  1895. 

Granite. 

Q  15.6 
or  32. 8 
ab  39. 3 
an  5.0 

C  0.5 

hy  1.7 
mt  2. 8 
il  1.5 

Kaserngrat,  Wind- 
giille  Mountains, 
Switzerland. 

C.  Schmidt. 

C.  Schmidt, 

N.  J.  B.  B.,  Ill, 
p.  432,  1886. 

Porphyry. 

Q  31.6 
or  28. 9 
ab  32. 0 

ac  4.2 
hy  0.5 
mt  0.  7 
hml.6 

Comende,  San  Pietro 
Island,  Sardinia. 

M.  Dittrich. 

H.  Rosenbusch, 
Elemente,  p.  257, 1898. 

Comendite. 

» 

Q,  29.9 
or  27. 2 
ab  33.  0 
an  3.3 

di  2.2 
hy  3. 6 

Forgia  Vecchia, 

Lipari,  Aeolian 
Islands. 

F.  Glaser. 

A.  Bergeat, 

Abh.  Munch.  Ak., 

XX,  p.  Ill,  1899. 

Obsidian. 

Q  33.7 
or  37.3 
ab21.5 
an  1. 9 

di  2.5 
hy  1.3 
mt  1.4 
il  0.6 

Hogland  Island,  Fin¬ 
land. 

V.  Ungern- 
Sternberg. 

V.  Ungern-Sternberg, 

In.  Diss.  Leipzig,  1882. 

Rapakiwi-gran- 

ite. 

Cf.  W.  Ramsay, 
G.  F.  F.,  XII, 
p.  481,  1890. 

Q  33.8 
or  22. 2 
ab  33. 5 
an  1. 7 

C  1.3 

hy  5.3 

N.  of  Kamary, 

Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  448,  1887. 

Dacite. 

Q  35.0 
or  33.9 
ab  24. 1 
an  4.2 

di  2.3 
hy  0.9 

Cap  Marsa.  N.  Mener- 
ville,  Algeria. 

Not  stated. 

Duparc,  Pearce,  and  Rit¬ 
ter,  Mem.  Soc.  Phvs. 
Gen.,  XXXIII, 
p.  77,  1900. 

Lipari  te. 

Q  31.5 
or  27. 8 
ab  35. 1 

ac  2.3 
di  1.0 
hy  1.6 

Mount  Scholoda, 
Abyssinia. 

G.  T.  Prior. 

G.  T.  Prior, 

Min.  Mag.,  XII, 
p.  264,  1900. 

Paisanite. 

Q  30.8 
or  40.0 
ab  24. 6 
an  0.8 

di  3.6 

Ensay,  Omeo,  Vic¬ 
toria. 

A.  W.  Howitt. 

A.  W.  Howitt, 

T.  R.  Soc.  Viet., 

XXII,  p.  97,  1886. 

Aplite. 

Dried  at  100°. 

S03  trace 

Q  34.3 
or  30. 6 
ab  27. 2 
an  1. 4 

C  0.9 

hy  1.2 
mt  0.5 

Wantialable  Creek, 
County  Gowen, 

New  South  Wales. 

J.  C.  H.  Min- 
gaye. 

G.  W.  Card, 

Rec.G.S.  N.  S.W..IV, 
p.  116,  1895. 

Trachyte. 

154 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 


RANG  1.  PERALKALIC.  LIPARASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

K20 

h2o+ 

O 

cs 

hrt 

O 

o 

TiO, 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

76.  34 

11.60 

2.41 

0.  30 

0.  06 

0.  55 

5. 50 

2.  75 

0.  39 

0.  10 

trace 

0.  26 

trace 

trace 

0.  09 

100.  35 

Al.I 

1.272 

.114 

.015 

.004 

.002 

.010 

.089 

.029 

.003 

— 

— 

.001 

2 

72.  56 

12.  33 

0.  80 

0.  82 

trace 

trace 

5.  36 

3.  08 

4.59 

0.  20 

trace 

99.  74 

A2.II 

1.209 

.121 

.005 

.012 

— 

— 

.087 

.032 

.003 

— 

3 

75. 92 

12.  96 

0.  33 

1.40 

trace 

0. 15 

4.  60 

4. 15 

0.  32 

0. 16 

0.03 

0.  05 

trace 

0.  04 

trace 

100.  23 

Al.I 

1.265 

.127 

.002 

’  .019 

— 

.003 

.074 

.044 

.001 

— 

— 

4 

66.  90 

14.  86 

0.  93 

3.41 

0.  31 

1.23 

5.  56 

5.02 

0.31 

0. 16 

0.  43 

0. 12 

0. 15 

0. 14 

100.  59 
0.  42 

Al.I 

1.115 

.146 

.006 

• 

.048 

.008 

.021 

.090 

.053 

.005 

.001 

.002 

.001 

100. 17 

5 

68.40 

17.99 

2.66 

1.63 

0.49 

0.  67 

4.54 

3.  54 

0.  52 

0.  21 

100. 65 

A3.  Ill 

1.140 

.175 

.017 

.022 

.012 

.012 

.073 

.037 

.003 

6 

75.64 

12.68 

1.07 

n.  d. 

trace 

0.  83 

4.  98 

3.51 

1.58 

100.  29 

A3.  Ill 

1.261 

.124 

.007 

(.014) 

— 

.014 

.080 

.037 

7 

67.23 

14.  70 

2.  85 

1. 15 

1.39 

2.  91 

6.89 

1.70 

0.  79 

trace 

0.  08 

trace 

.012 

none 

99.  89 

Al.I 

1.121 

.144 

.018 

.017 

.035 

.051 

.111 

.018 

.001 

— 

.002 

8 

72.  70 

13.  79 

1.01 

n.  d. 

0.  65 

2.  07 

4.  93 

4.  33 

1.10 

\ 

100. 48 

A3.  Ill 

1.212 

.135 

.006 

(.012) 

.016 

.038 

.079 

.046 

9 

73.  81 

13.  72 

1.59 

n.  d. 

0.  23 

0.  61 

5.29 

4.  09 

— — 

0. 97 

100.  31 

A3.  Ill 

1.230 

.135 

.010 

(.014) 

.006 

.011 

.085 

.043 

.012 

10 

71. 14 

12.  98 

3.  35 

n.  d. 

0.  34 

1.10 

4.97 

3.84 

0.  82 

0.  48 

99.  02 

B4.  V 

1.186 

.127 

.021 

(.042) 

.009 

.020 

.080 

.040 

.006 

11 

69.81 

13.85 

3.21 

n.  d. 

0.  43 

1.38 

5.56 

4.  40 

n.  d. 

1.06 

99.  70 

A4.  IV 

1.164 

.135 

(.002) 

(.  036) 

.011 

.025 

.090 

.047 

.013 

12 

67.  91 

15.17 

3.  92 

n.  d. 

0.  55 

1.59 

5.  36 

4.  52 

n.  d. 

0.  53 

99.  55 

• 

A4.  IV 

1.132 

.148 

.019 

(.038) 

.014 

.029 

.087 

.048 

.007 

13 

71.60 

13.60 

2.40 

n.  d. 

0.  21 

2.  30 

5.55 

3.53 

0.  70 

99.89 

A4.  IV 

1.193 

.133 

.015 

(.030) 

.005 

.041 

.089 

.037 

i 

1 

14 

71. 65 

13.  04 

2.  79 

1.80 

trace 

trace 

6.  30 

3.98 

1.10 

trace 

trace 

100.  66 

A3.  Ill 

1.194 

.128 

.018 

.025 

— 

— 

.102 

.042 

_ 

15 

71.35 

12.  21 

4.53 

1.14 

trace 

0.  22 

6.51 

3.  22 

0.  33 

0.  50 

0.  78 

100.  79 

A2.  II 

1.189 

.120 

.028 

.014 

— 

.004 

.105 

.034 

.006 

.011 

16 

73.63 

12.  89 

n.  d. 

2.  46 

0.57 

1.37 

5.28 

3.  67 

0.81 

• 

100.  68 

A4.  IV 

1.227 

.126 

— 

.034 

.014 

.025 

.085 

.039 

17 

72.11 

15.  85 

1.63 

n.  d. 

0.  69 

0.  83 

4.  85 

4.23 

0. 68 

100. 87 

2.  624 

B3.  IV 

1.202 

.155 

.010 

(.020) 

.017 

.014 

.078 

.045 

18 

73.  46 

12.  47 

3.  64 

n.  d. 

trace 

0.  32 

5.  63 

4.  03 

0.44 

trace 

99.99 

2.  58 

A3.  Ill 

1.224 

.122 

(.010) 

(.024) 

.005 

.090 

.042 

_ 

PERSALANE - KALLERUDOSE. 


155 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  4.  DOSODIC.  KALLERUDOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO 

Li.,0 

none 

none 

Q  33.6 
or  16. 1 
ab  44. 5 

ac  1. 8 
di  0.4 
wo  1.0 
mt  0.2 
il  0.5 
hm2.2 

Monterey, 

Franklin  County, 
Pennsylvania. 

II .  N.  Stokes. 

F.  Bascom, 

B.  U.S.G.S.,  150, 
p.  348,  1898. 

Aporhyolite. 

Q  29.5 
or  17.8 
ab  45. 6 

C  0.2 

hy  0.5 
mt  1.2 
il  0.5 

Checkerboard  Creek, 
Castle  Mountains, 
Montana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  125,  1896. 

Rhyolite. 

F 

SrO 

LioO 

0.12 

none 

trace 

Q  32.0 
or  24. 5 
ab  38. 8 
an  0.8 

C  0.6 

hy  2.2 
mt  0.2 

Near  Florissant, 

Pike’s  Peak  District, 
Colorado. 

W.  F.  Hille- 
brand. 

E.  B.  Mathews, 

B.  U.  S.  G.  S.,  148, 
p.  160,  1897. 

Granitite. 

F 

SrO 

LioO 

1.00 

none 

0. 06 

Q  12.5 
or  29. 0 
ab  47. 2 
an  0.6 

hy  5.7 
mt  1.4 
il  0.8 
ft  1.8 

N.  of  Twin  Creek, 
Pike’s  Peak,  Colo¬ 
rado. 

W.  F.  Hille- 
brand. 

E.  B.  Mathews, 

B.  U.  S.  G.  S.,  148, 
p.  160,  1897. 

Granite-gneiss. 

Near  liparose. 

Q,  26.3 
or  20. 6 
ab  38. 3 
an  3. 3 

C  5.4 

hy  1.9 
nit  3.9 

San  Mateo  Mountain, 
Mount  Taylor  Re¬ 
gion,  New  Mexico. 

T.  M.  Chatard. 

B.  U.  S.  G.  S.,  148, 
p.  185,  1897. 

Lava. 

Q  31.4 
or  20. 6 
ab41.9 
an  1.9 

di  1.7 
hy  0.9 

Cerro  de  los  Navajos, 
n.  Tulancingo, 
Mexico. 

F.  Baerwald. 

C.  A.  Tenne, 

Z.  D.  G.G.,  XXXVII, 
p.  616,  1885. 

Obsidian. 

Cf.  No.  50,  lipa¬ 
rose. 

ZrOo 

Cl 

FeSo 

CoO' 

Cu 

none 

0.02 

0.02 

none 

0.04 

Q  14.8 
or  10. 0 
ab  58. 2 
an  4.2 

di  7.6 
mt  4.0 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  Contr. 

Pyroxene-gran- 

itite. 

Near  noyangose. 

Q  22.0 
or  25. 6 
ab  41. 4 
an  2.8 

di  7.7 

Cerro  del  Quinche, 
Quito,  Ecuador. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  444,  1887. 

Obsidian. 

Q  24.8 
or  23. 9 
ab  44. 5 

ac  4. 6 
hy  0.8 
il  1.9 

Raudhfossafjoll,  Ice¬ 
land. 

H.  Backstrdm. 

H.  Backstrdm, 

G.  F.  F.,  XIII, 
p.  657,  1891. 

Liparite. 

Q  23.6 
or  22. 2 
ab  41. 9 
an  1.9 

di  3.2 
hy  4. 0 
il  0.9 

Raudhfossafjoll,  Ice¬ 
land. 

H.  Backstrom. 

H.  Backstrdm, 

G.  F.  F.,  XIII, 
p.  658,  1891. 

Obsidian. 

Sum  low. 

Q  17.2 
or  26. 1 
ab  46. 1 

ac  0. 9 
di  5.9 
hy  1.1 
il  2.0 

Domadalshraun,  Ice¬ 
land. 

H.  Backstrdm. 

H.  Backstrdm, 

G.  F.  F.,  XIII, 
p.  643,  1891. 

Liparite. 

Q  14.1 
or  26. 7 
ab  45. 6 
an  3.6 

di  3.8 
hy  3.5 
il  1.1 

Langahraun,  Iceland. 

H.  Backstrdm. 

H.  Backstrdm, 

G.  F.  F.,  XIII, 
p.  646,  1891. 

Liparite. 

• 

Q  21.3 
or  20. 6 
ab  46. 6 
an  1. 9 

di  8.3 

Carrock  Fell,  Eng¬ 
land. 

G.  Barrow. 

A.  Harker, 

Q.  J.  G.  S. ,  LI, 
p.  129,  1895. 

Granophyre. 

Q  20.3 
or  23. 4 
ab  45. 1 

ac  7. 4 
hy  3.0 
mt  0.5 

Hougnatten,  Sands- 
var  Parish,  Nor¬ 
way. 

L.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  I, 
p.  127,  1894. 

Soda-granite. 

Q  21.5 
or  21.7 
ab  45. 1 

ac  8. 8 
wo  0.4 
mt  3.0 

Ivallerud,  Svarstad 
Parish,  Laugen- 
thal,  Norway* 

L.  and  V. 
Schmelck. 

IV.  C.  Brogger, 

Eg.  Kg.,  I, 
p.  48,  1894. 

Grorudite. 

MnO  high? 

Near  pantel- 
lerose. 

Q  24.1 
or  21. 7 
ab  44. 5 
an  0. 6 

di  6.6 
hy  3.1 

Orno,  Sweden. 

R.  Mauzelius. 

A.  Cederstrom, 

G.  F.  F.,  XV, 
p.  Ill,  1893. 

Granite. 

Q  23.9 
or  25. 0 
ab  40.  9 
an  3.9 

C  1.8 

hy  4.4 

Griesbach,  Peters- 
thal,  Baden. 

Tbiiracb. 

F.  Schalch, 

Sp.  Kte.  Baden, 

Bl.  Petersthal, 
p.  31,  1895. 

Granite. 

Q  25.4 
or  23.4 
ab41.9 

ac  4. 6 
di  1.3 
hy  2.7 

Amba  Subhat, 
Abyssinia. 

G.  T.  Prior. 

G.  T.  Prior, 

Min.  Mag.,  XII, 
p.  262,  1900. 

Grorudite. 

1 56 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 

RANG  1.  PERALKALIC.  LI  PA  RASE— Continued. 


No. 

Si02 

Al-A 

Fe,03 

FeO 

MgO 

CaO 

Na,0 

k2o 

H,G+ 

H20- 

CO., 

TiO, 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

19 

72.  71 

12.  80 

2.64 

1.48 

0. 10 

0.  58 

6.  50 

3.  87 

0.  48 

trace 

101. 16 

B3.  IV 

1.212 

.125 

.016 

.021 

.003 

.010 

.105 

.041 

— 

20 

70.  99 

14.  84 

3.  76 

0.  35 

0.  14 

0.60 

5.  94 

2.40 

0.  40 

trace 

99.  42 

B3.  IV 

1.183 

•  .145 

.024 

.005 

.004 

.011 

.096 

.025 

— 

RANG  1.  PERALKALIC.  LIPARASE. 

1 

74.  78 

14.  56 

3.04 

n.  d. 

trace 

0.  69 

6.  02 

0.59 

0.  42 

100. 10 

2.64 

A4.  IV 

1.246 

.143 

.019 

(.038) 

— 

.012 

.097 

.006 

2 

75.  46 

13. 18 

0.91 

n.  d. 

0. 10 

0.95 

6.  88 

1.09 

0.  93 

99.  91 

2.42 

A3.  Ill 

1.258 

.129 

.006 

(.012) 

.003 

.017 

.ill 

.012 

3 

77.  29  • 

14.  62 

trace 

n.  d. 

0.  38 

trace 

7.  60 

0. 16 

0.  57 

100.  62 

A3.  Ill 

1. 288 

.143 

— 

— 

.010 

— 

.122 

.002 

4 

.  72.  50 

17.  00 

1. 17 

n.  d. 

0.  74 

0.20 

6.  28 

0.  77 

1.62 

100.  28 

A3.  Ill 

1.208 

.167 

.007 

(.014) 

.019 

.003 

.101 

.008 

5 

71.20 

17.60 

1.74 

n.  d. 

1. 17 

0.  76 

6.  20 

0.  85 

1.37 

100. 89 

A3.  Ill 

1.187 

. 

.172 

.011 

(.022) 

.029 

.014 

.100 

.009 

• 

0 

68.  04 

16. 14 

4.  32 

0.  97 

1.02 

0.32 

7.  62 

0.  58 

1.  27 

100. 28 

A3.  Ill 

1.134 

.158 

.027 

.014 

.026 

.005 

.122 

.006 

l 

72.34 

14.  07 

2.  92 

n.  d. 

1.27 

0.  41 

6.  28 

1. 13 

1.41 

99.  83 

At.  IV 

1.206' 

.138 

.018 

(.036) 

.032 

.007 

.101 

.012 

8 

77.  66 

12.  30 

0.  61 

0.17 

0.  73 

0. 16 

6.  96 

0.19 

0.46 

0.  33 

trace 

99.57 

2.634 

A3.  Ill 

1.294 

.128 

.004 

.003 

.018 

.003 

.112 

.002 

— 

9 

72.  39 

14.  42 

0.  56 

0.  30 

1.85 

0.  85 

5.  93 

1.23 

1. 13 

0.55 

trace 

99.22 

2.  632 

A3.  Ill 

1.207 

.141 

.004 

.004 

.046 

.016 

.095 

.013 

— 

10 

78.  77 

12.44 

0.95 

n.  d. 

0.  02 

0.  53 

6.  79 

0.  24 

0.  26 

0. 14 

100. 14 

2.  614 

A3.  Ill 

1.313 

.122 

.006 

(.012) 

.001 

.010 

.110 

.002 

RANG  2.  DOMALKALIC.  TOSCANASE. 

1 

68.  55 

16.  46 

0.  85 

0.56 

0. 17 

4.17 

1.92 

5.59 

n.  d. 

0.  35 

0.  52 

1  101.03 

A2.  II 

1.143 

.161 

.005 

.008 

.004 

.075 

.030 

0.  80 

100.  23 

2 

68.  36 

13.  24 

1.29 

3.39 

1. 15 

2.51 

2.05 

5.  34 

2.  63 

0.27 

100.  23 

A3.  Ill 

1.139 

.130 

.008 

.048 

.029 

.045 

.033 

.057 

004 

3 

69.21 

15.  59 

1.08 

1.29 

0.11 

1.30 

1.69 

8.92 

0.  75 

99.  94 

A3.  Ill 

1.154 

.152 

.007 

.019 

.003 

.023 

.027 

.094 

PERSALANE - DELLENOSE. 


157 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  4.  DOSODIC.  KALLERUDOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  21.4 
or  22. 8 
ab  44. 0 

ac  7.4 
ns  0. 6 
di  2. 5 
hy  1.7 

Green  Mountain, 
Ascension  Island, 
Atlantic  Ocean. 

C.  Element. 

A.  Renard, 

Challenger  Reps., 

Pet.  Oc.  Islands, 
p.  52,  1889. 

Obsidian. 

Sum  high — al¬ 
kalies  high? 

Q  29.5 
or  13. 9 
ab  50. 3 
an  3.1 

C  1.3 

hy  0.4 
mt  1. 2 
hm  3.0 

Weatherpost  Hill, 
Ascension  Island, 
Atlantic  Ocean. 

C.  Element. 

A.  Renard, 

Challenger  Reps., 

Pet.  Oc.  Islands, 
p.  47,  1889. 

Trachyte. 

SUBRANG  5.  PERSODIC.  NOYANGOSE. 

Q  34.0 
or  3.3 
ab  50. 8 
an  3. 3 

C  2.9 

hy  .5. 0 

Monhegan  Island, 
Maine. 

E.  C.  E.  Lord. 

E.  C.  E.  Lord, 

A.  G.,  XXVI, 
p.  343,  1900. 

Alsbachite. 

Q  28.9 
or  6.7 
ab  58. 2 
an  1.7 

di  2.6 
hy  0.5 

Berkeley,  California. 

C.  Palache. 

C.  Palache, 

B.Dep.  G. Un.  Cal.,  I, 
p.  67,  1894. 

Soda-rhyolite. 

Q  32.0 
or  1. 1 
ab  63. 9 

C  1.9 

hy  1.0 

Brittas  Bridge, 

County  Wicklow, 
Ireland. 

F.  H.  Hatch. 

F.  H.  Hatch, 

G.  M.  (3),  VI, 
p.  70,  1889. 

Quartz-kerato- 

phyre. 

Cited  in  F.  Zir- 
kel.  Lehrb.  II, 
p.  334,  1894. 

Q  30.9 
or  4.4 
ab  52. 9 
an  0.8 

C  4.6 

hy  3.8 

Prat-meur,  Brittany, 
France. 

Not  stated. 

C.  Barrois, 

Guide  Exc.  VIII 

Cong.  G.  Int.,  VII, 
p.  21,  1900. 

Euritic  aplite. 

Q  27.2 
or  5. 0 
ab  62. 4 
an  3.9 

C  5.0 

hy  5.9 

Rostellec,  Brittany, 
France. 

Not  stated. 

C.  Barrois, 

Guide  Exc.  VIII 

Cong.  G.  Int.,  VII, 
p.  21,  1900. 

Euritic  aplite. 

N 

Q  19.9 
or  3. 3 
ab  63. 9 
an  1. 4 

C  2.6 

hy  2.6 
mt  3. 2 
hm  2. 0 

Pozoritta,  Bukowina, 
Austria. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien., 
XLIX,  p.  561,  1899. 

Albite-porphy- 

rite. 

Q  26.8 
or  6. 7 
ab  52. 9 
an  1.9 

C  1.8 

hy  8.0 

St.  George  Monastery, 
Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong. 
G.  Int.,  XXXIII, 
p.  27,  1897. 

Eeratophyre. 

Q  35.2 
or  1. 1 
ab  58. 7 
an  0.8 

C  1.1 

hy  1.8 
mt  0. 8 

Navigation  Creek, 
Noyang,  Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt, 

T.  R.  Soc.  Viet.,  XX, 
p.  41,  1884. 

Quart  z-mica- 
porphyrite. 

Q  28.9 
or  7.2 
ab  49. 8 
an  4. 4 

C  1.7 

hy  4.  6 
mt  0. 9 

Tambo  River, 

Noyang,  Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt, 

T.  R.  Soc.  Viet.,  XX, 
p.  38,  1884. 

Quartz-mica- 

porphyrite. 

Q  36.5 
or  1. 7 
ab  57. 6 
an  2.8 

hy  1.6 

Noyang,  Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt, 

T.  R.  Soc.  Viet.,  XX, 
p.  46,  1884. 

Quartz-porphy- 

rite. 

SUBRANG  2.  DOPOTASSIC. 

DELLENOSE. 

F  1.89 

Q  32.9 
or  33.4 
ab  15. 7 
an  7. 0 

C  4.7 

hy  0.4 
mt  0. 9 
il  0.6 
ft  3.9 

Storholm,  Sweden. 

H.  Santesson. 

P.  J.  Holmquist, 

Afh.  Sver.  G.  Und., 
No.  181,  p.  51,  1899. 

Quartz-por¬ 

phyry. 

Q  26.7 
or  31.7 
abl7.3 
anil.  1 

di  1.2 
hy  7.6 
mt  1. 9 

Dellen,  Helsingland, 
Sweden. 

H.  Santesson. 

F.  Svenonius, 

G.  F.  F. ,  X,  p.  273, 
1888. 

Hypersthene- 

andesite. 

Dellenite  of 
Brogger.  Eg. 
Eg.  II,  p.  59, 
1895. 

Q  22.0 
or  52. 3 
ab  14. 1 
an  6.4 

C  0.8 

.  hy  1. 9 
mt  1.6 

Wirvik,  Finland. 

B.  Frosterus. 

B.  Frosterus, 

T.  M.  P.  M.,  XIII, 
p.  188,  1892. 

Granite. 

158 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 

RANG  2.  DOMALKALIC.  TOSC AN ASE— Continued. 


No. 

Si02 

A1A 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

HjO— 

co2 

TiOo 

L 

PA 

MnO  |  BaO 

Sum 

Sp.  gr. 

4 

66.  64 

15. 10 

0.  69 

3.  08 

1.36 

1.49 

2.  05 

6.71 

2. 32 

99.  94 

A3.  Ill 

1.111 

.148 

.004 

.043 

.034 

.027 

.033 

.071 

5 

65. 17 

17.  09 

1.26 

2.  93 

1.  75 

1.39 

2. 16 

5.  70 

2.  75 

. 

100.  20 

A3.  Ill 

1.086 

.168 

.008 

.040 

.044 

.025 

.035 

.061 

6 

66.  24 

15.  64 

1. 16 

2. 19 

0.  89 

2.17 

2.  05 

6.  60 

3.25 

100. 19 

2.  455 

A3.  Ill 

1.102 

.153 

.008 

.030 

.022 

.039 

.033 

.070 

7 

65. 19 

16.04 

1.16 

2.  48 

0.  99 

2.  92 

2.  26 

6. 11 

1.85 

99.00 

2.  509 

B3.  IV 

1.094 

.157 

.007 

.034 

.025 

.052 

.036 

.065 

RANG  2.  DOMALKALIC.  TOSCANASE. 


1 

71.69 

14.  84 

n.  d. 

1.25 

0.  37 

1.03 

3.13 

7.09 

0.  49 

0. 10 

trace 

99.99 

A3.  Ill 

1.195 

.  145 

— 

.018 

.009 

.018 

.050 

.075 

— 

2 

67.50 

18.  23 

n.  d. 

2.39 

1.56 

1.85 

3.  79 

4.25 

0.  90 

0.  08 

100.  55 

A4.  IV 

1.125 

.179 

— 

.033 

.039 

.033 

.061 

.046 

3 

65.  02 

17.  93 

4.  69 

0.17 

1.24 

1.34 

3.04 

5.  98 

0.  86 

0.  11 

100.  38 

A3.  Ill 

1.084 

.  176 

.029 

.002 

.031 

.023 

.049 

.064 

.002 

4 

64.  62 . 

16.  46 

1.82 

2. 14 

1. 10 

2.  39 

4.  57 

5.21 

0.39 

0. 13 

0. 11 

0.  81 

0.  21 

0. 12 

0.  03 

100.  38 

Al.  I 

1.077 

.161 

.011 

.030 

.023 

.043 

.074 

.055 

.010 

.001 

.002 

5 

68.  88 

14.  96 

0.  64 

4.  64 

0.  37 

1.74 

3.  83 

4.97 

0.  24 

0.  06 

trace 

trace 

100. 33 

2.  696 

A3.  Ill 

1.148 

.146 

.004 

.064 

.009 

.031 

.062 

.053 

— 

— 

12° 

6 

68.  36 

16.  58 

0. 90 

3.24 

0. 45 

1.85 

3.  97 

5.  27 

0. 17 

0. 18 

trace 

trace 

100.  97 

A3.  Ill 

1.139 

.163 

.006 

.045 

.011 

.033 

.064 

.056 

— 

— 

7 

66.  60 

15.  05 

1.07 

4.  42 

0.  36 

2.  21 

4.03 

5.42 

0. 41 

0.  76 

trace 

none 

100. 33 

2.  612 

A2.  II 

1.110 

.148 

.007 

.061 

.009 

.039 

.065 

.058 

.009 

— 

— 

17° 

8 

71.23 

13.64 

1.70 

1.00 

0.  75 

2.  31 

3.  55 

3.  79 

1.72 

0.  21 

0.  05 

99.  95 

2.690 

A2.  II 

1.187 

.134 

.011 

.015 

.019 

.041 

.057 

.040 

.003 

.001 

9 

68.  40 

15.  75 

2.  97 

0.65 

0. 12 

1.64 

4. 16 

5.  78 

0.  48 

trace 

100.  58 

2.  66 

A3.  Ill 

1.140 

.154 

.019 

.009 

.003 

.029 

.  067 

.062 

— 

10 

72. 57 

15.11 

0.59 

1.02 

0.30 

1.65 

3.  92 

4. 33 

0.  47 

trace 

99.  96 

A3.  Ill 

1.210 

.148 

.004 

.014 

.008 

.030 

.063 

.046 

— 

11 

71.79 

15.00 

0.  77 

1.12 

0.  51 

2.50 

3.09 

4.  75 

0.  64 

100. 17 

A3.  Ill 

1.197 

.147 

.005 

.015 

.013 

.045 

.050 

.051 

12 

70.  45 

15.98 

0.  75 

1.84 

0.  77 

2.  60 

3.83 

3.  59 

0.^5 

100.  26 

A3.  Ill 

1.174 

.157 

.005 

.026 

.019 

.047 

.061 

.038 

PERSALANE - TOSCANOSE. 


159 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  2.  DOPOTASSIC.  DELLENOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  21.6 
or  40. 0 
ab  17. 3 
an  7.5 

C  1.7 

by  8.6 
mt  0.9 

Der  Gabel,  Mtinster- 
thal,  Schwarz wald, 
Baden. 

Bunsen’s 

Laboratory. 

A.  Schmidt, 

Cf.  N.  J.,  1889,  1, 
p.  95. 

Porphyry. 

Q  23.0 
or  33. 9 
ab  18. 3 
an  7.0 

C  4.8 

hy  8.7 

mt  1.9 

\ 

Brandenberg,  Miin- 
sterthal,  Schwarz- 
wald,  Baden. 

Bunsen’s 

Laboratory. 

A.  Schmidt, 

Cf.  N.  J.,  1889,  I, 
p.  95. 

Porphyry. 

Q  21.7 
or  39. 8 
ab  17.3 
an  10. 8 

C  1.1 

hy  5.1 
mt  1.9 

Mte.  Cucco,  Cerveteri, 
Italy. 

H.  S.  Wash¬ 
ington. 

II.  S.  Washington, 

J.  G.,  V,  p.  49,  1897. 

Toscanite. 

Q  19.9 
or  36. 1 
ab  18. 9 
an  14. 5 

C  0.4 

hy  6.0 
mt  1.6 

Castle  Hill,  Tolfa, 
it&iy- 

H.  S.  Wash¬ 
ington. 

II.  S.  Washington, 

J.  G.,  V.,  p.  49,  1897. 

Toscanite. 

Sum  low. 

SUBRANG 

3.  SODIPOTASSIC. 

TOSCANOSE. 

Q,  22.9 
or  41. 7 
ab  26. 2 
an  5.0 

C  0.2 

hy  3.3 

Taggart  Bay,  Lake 
Keepawa,  Quebec. 

F.  G.  Wait. 

G.  C.  Hoffmann, 

A.  R.  G.  S.  Can.,  IX, 
p.  18  R,  1898. 

Granitite- 

gneiss. 

Q  20.7 
or  25. 6 
ab32.0 
an  9.2 

C  4.0 

hy  8.3 

Lake  Wieksteed, 
Quebec. 

F.  G.  Wait. 

G.  C.  Hoffmann, 

A.  R.  G.  S.  Can.,  IX, 
p.  19  R,  1898. 

Granite-gneiss. 

Q,  19.7 
or  35. 6 
ab  25. 7 
an  6.4 

C  4.1 

hy  3.1 
mt  0. 5 
hm  4. 3 

Pemigewasset,  New 
Hampshire. 

L.  G.  Eakins. 

B.  U.  S.  G.  S.  148, 
p.  67,  1897. 

Quartz-por¬ 

phyry. 

ZrOo 

Cl 

FeSo 

NiO 

0.03 

0. 03 

0. 19 
none 

Q  11.7 
or  30. 6 
ab38.8 
an  8.9 

di  2.7 
hy  2.2 
mt  2.6 
il  1.5 

Mt.  Ascutney,  Ver¬ 
mont. 

W.  F.  Hille- 
brand. 

R.  A.  Dalv, 

B.  U.  S.“  G.  S.  148, 
p.  69,  1897. 

Diorite. 

Q  19.6 
or  29. 5 
ab  32. 5 
an  8.6 

hy  8.8 
mt  0. 9 

Squam  Light,  Cape 
Ann,  Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  VII, 
p.  109,  1899. 

Quartz- 

syenite- 

porphyry. 

Q  18.2 
or  31.1 
ab  33. 5 
an  9.2 

C  1.0 

hy  6.2 
mt  1.4 

Wolf  Hill,  n.  Glou¬ 
cester,  Essex  Co., 
Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  VI, 
p.  800,  1898. 

Nordmarkite. 

Q  15.2 
or  32.2 
ab  34.1 
an  7. 0 

di  3.4 
hy  5.0 
mt  1.6 
il  1.3 

Gloucester,  Essex  Co. , 
Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  VI, 
p.  798,  1898. 

Akerite. 

Dried  at  110°. 

Q,  30.4 
or  22. 2 
ab  29. 9 
an  10. 3 

di  0.9 
hy  1.6 
mt  2.6 
il  0. 5 

Conanicut  Island, 
Rhode  Island. 

L.  V.  Pirsson. 

L.  V.  Pirsson, 

A.  J.  S.,  XL VI, 
p.  373,  1893. 

Granite. 

S 

0.63 

Q,  18.5 
or  34. 5 
ab  35. 1 
an  7.0 

di  0.8 
mt  2. 1 
hm  1. 6 

Millstone  Point,  Con¬ 
necticut. 

H.  T.  VultC 

J.  F.  Kemp, 

B.  G.  S.  A.,  X, 
p.  375,  1899. 

Granite. 

Q  28.7 
or  25. 6 
ab  33. 0 
an  8. 3 

C  0.9 

hy  2.1 
mt  0. 9 

Guilford,  Howard 

Co.,  Maryland. 

W.  F.  Hille- 
brand. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  672,  1895. 

1 

Granite. 

Dried  at  100°. 

Q  28.7 
or  28. 4 
ab  26. 2 
an  12. 5 

hy  2.6 
mt  1.2 

Woodstock,  Balti¬ 
more  Co.,  Mary¬ 
land. 

W.  F.  Hille- 
brand. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  672,  1895. 

Biotite-granite. 

Dried  at  100°. 

Q  26.8 
or  21.1 
ab  32. 0 
an  13. 1 

C  1.1 

hy  4.7 
mt  1.2 

Dorsey  Run  Cut, 
Howard  Co.,  Mary¬ 
land. 

W.  F.  Hille- 
brand. 

1 

C.  R.  Keyes. 

15  A.  R.  U.  S.  G.  S., 
p.  697,  1895. 

Biotite-gramte. 

Dried  at  100°. 

1(50 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  PERSALANE — Continued. 

RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No.  ' 

Si02 

A1203 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

K20 

h2o+ 

HaO— 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

i 

Sp.  gr. 

13 

69.  56 

15.  52 

1.67 

1.19 

0.  41 

1.20 

4.  46 

4.  68 

0.  67 

0.  34 

none 

0.31 

0.08 

0.  07 

0. 10 

100.  26 

Al.  I 

1. 159 

.152 

.010 

.017 

.010 

.021 

.072 

.050 

.004 

.001 

.001 

.001 

14 

67.98 

14.  84 

1.00 

3. 15 

0.  91 

2. 17 

2.  66 

4.  76 

0.  49 

0. 14 

none 

0.  84 

0.34 

trace 

0.  20 

99.  77 

Al.  I 

1.133 

.146 

.006 

.044 

.023 

.039 

.043 

.051 

.010 

.002 

— 

.001 

15 

69.69 

15.64 

0.  90 

1.62 

0.  66 

1.22 

3.  34 

5.  30 

n.d. 

0.  29 

98.  66 

A3.  Ill 

1.162 

.153 

.006 

.  022 

.017 

.021 

.054 

.057 

.004 

16 

66.69 

16.  69 

2.  06 

0.  93 

1. 15 

1.40 

2.  46 

5.  23 

1.70 

— 

1.42 

99.  73 

A3.  Ill 

1.112 

.163 

.013 

.013 

.029 

.025 

.040 

.056 

17 

66. 10 

■  20.  82 

1.52 

2. 17 

0.  95 

1.57 

2.  94 

3.  48 

0. 54 

• 

100. 09 

A3.  Ill 

1. 102 

.204 

.009 

0. 30 

.024 

.029 

.047 

.037 

18 

74.  00 

12.  04 

0.  78 

2.  61 

0.  42 

0.  85 

3.47 

4.  33 

0.  86 

— 

0.34 

0.  06 

0.  05 

0. 12 

99.  93 

2.  565 

Al.  I 

1.233 

.118 

.005 

.036 

.011 

.015 

.056 

.044 

.004 

— 

.001 

.001 

19 

69.  94 

15. 19 

1.88 

0.  60 

0.  92 

1. 15 

3.95 

4.29 

0.  85 

0. 14 

0.  25 

0. 13 

0.  03 

99.  32 

B2.  Ill 

1.166 

.149 

.012 

.008 

.023 

.021 

.064 

.046 

.003 

.001 

— 

< 

20 

74.  37 

13. 12 

0.  73 

0.  87 

0.35 

1.26 

2.57 

6.  09 

0.  25 

0.  05 

0.  29 

0.  06 

trace 

0. 10 

100. 11 

Al.  I 

1.246 

.128 

.005 

.011 

.009 

.022 

.042 

.  065 

.004 

— 

— 

— 

21 

64.  49 

17.25 

0.  86 

2.  42 

1.24 

3.  79 

4. 19 

4. 15 

0.54 

0.  06 

0.51 

0.23 

trace 

0.  30 

100. 11 

A.  I 

1.075 

.169 

.005 

.034 

.031 

.  067 

.068 

.044 

.006 

.002 

— 

.002 

22 

73. 12 

14.  27 

0.51 

0.  26 

0.  24 

1. 10 

3.43 

4.90 

0.  73 

0.68 

0.  77 

0.  08 

0. 03 

0.  06 

trace 

100. 18 

Al.  I 

1.219 

.140 

.003 

.004 

.006 

.020 

.  055 

.052 

.001 

— 

.001 

— 

23 

69.  68 

14.97 

0.  79 

0.  34 

0.  66 

2. 10 

3.  38 

4.  40 

0.  92 

1. 10 

0.  88 

0.  28 

0.17 

trace 

0. 14 

99.  86 

Al.  I 

1.161 

.147 

.005 

.005 

.016 

.038 

0.55 

0. 47 

.004 

.001 

— 

. 

.001 

24 

68.  60 

16. 13 

2.  22 

0.  44 

0.  72 

1.36 

4.37 

4.  89 

0.  58 

0.  20 

0.  32 

0. 18 

trace 

0.  27 

100.  37 

Al.  I 

1.143 

.158 

.014 

.005 

.018 

.024 

.071 

.053 

.004 

.001 

— 

.002 

25 

67.44 

15.  78 

1.58 

0.  85 

1.43 

2.  38 

4. 11 

4.87 

0.  70 

0.  32 

0.  32 

0.21 

trace 

0.  24 

100. 32 

Al.  I 

1.124 

.154 

.010 

.012 

.036 

.043 

.066 

.052 

.004 

.001 

— 

.002 

26 

67.04 

15.  25 

1.69 

1.  13 

1.75 

2.17 

4.09 

5.  10 

0.56 

0.51 

0.  20 

0.  21 

0.05 

0.  33 

100.11 

Al.  I. 

1.117 

.150 

.011 

.015 

.049 

.039 

.066 

.055 

.003 

.001 

.001 

.002 

27 

66.  29 

15.09 

1.37 

1.17 

2.39 

2.  38 

3.  96 

4.  91 

0.  60 

0.39 

0.  45 

0.  27 

0.  15 

0.  06 

0.30 

99.  85 

Al.  I 

1. 105 

.148 

.009 

.017 

.060 

.043 

.064 

.052 

.003 

.001 

.001 

.002 

28 

64.  64 

16.  27 

2.  42 

1.58 

1.27 

2.  65 

4.39 

4.98 

0.  27 

0.  09 

0.37 

0.51 

none 

trace 

0.18 

100. 12 

Al.  I 

1.078 

.160 

.015 

.022 

.032 

.048 

.071 

.054 

.006 

— 

— 

.001 

29 

69.  95 

15. 14 

0.38 

0.  83 

0.56 

1.45 

2.  70 

6.  36 

0.  91 

0.  40 

0.  37 

0.24 

0. 10 

0.08- 

0. 13 

100. 06 

Al.  I 

1.166 

.148 

.002 

.011 

.014 

.026 

.043 

.068 

.003 

.001 

.001 

.001 

PE  RSA  L  A  N  E - TOSCANOSE . 


161 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  TOSCANOSE — Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

s 

SrO 

l.i.,0 

trace 

trace 

trace 

Q  22.3 
or  27. 8 
ab37. 7 
an  5.8 

C  0.9 

hy  1.4 
mt  2.3 
il  0.6 

Monterey  Mt.,  Vir¬ 
ginia. 

W.  F.  Hille- 
brand. 

Darton  and  Keith, 

A.  .1.  S.,  VI. 
p.  307,  1898. 

Felsophyre. 

so3 

Cl 

F 

s 

SrO 

Org. 

trace 

trace 

trace 

0.08 

trace 

0. 21 

Q  26.4 
or  28. 4 
ab22. 5 
an  10. 8 

C  1.3 

hy  6.0 
mt  1 . 4 
il  1.5 

Near  Rowland,  Bar¬ 
tow  Co.,  Georgia. 

H.  N.  Stokes. 

A.  H.  Brooks, 

B.  U.  S.  G.  S.  168, 
p.  55,  1900. 

Augite-micro- 

cline-granite. 

Org.  =graphite. 

Q  25.5 
or  31.  7 
ab  28. 3 
an  5.8 

C  2.1 

hy  3.3 
mt  1.4 
il  0.6 

Felch  Mountain, 
Michigan. 

H.  N.  Stokes. 

II.  L.  Smith, 
M.U.S.G.S.,  XXXVI, 
p.  389,  1899. 

Granite. 

Sum  low 
because  II20 
not  deter¬ 
mined. 

Q  27.4 
or  31. 1 
ab21. 0 
an  7.0 

C  4.3 

hy  2.9 
mt  3.0 

Upper  Quinnesec 

Falls,  Menominee 
River,  Wisconsin. 

R.  B.  Riggs. 

G.  H.  Williams, 

B.  U.  S.  G.  S.  62, 
p.  121,  1890. 

Quartz-por¬ 

phyry. 

Dried  at  105°. 

Q  29.7 
or  20. 6 
ab  24. 6 
an  8. 1 

C  9.3 

hy  5.2 
mt  2.1 

Athelstane,  Wiscon¬ 
sin. 

W.  W.  Daniells. 

E.  R.  Bucklev, 

B.  IV.  G.  Nh.  S.Wis., 
p.  148,  1898. 

Granite. 

A1203  high? 

Cl 

Li«0 

trace 

trace 

Q  33.2 
or  25. 0 
ab  29. 3 
an  4.2 

hy  4.6 
mt  1. 2 
il  0.6 

Pigeon  Point,  Minne¬ 
sota. 

W.  F.  Hille- 
brand. 

W.  S.  Bavley, 

A.  J.  S',  XXXVII, 
p.  59,  1889. 

Quartz-kerato- 

phyre. 

Dried  at  105°. 

3  specimens. 

NiO 

trace 

Q  26.5 
or  25. 6 
ab  33. 5 
an  5.8 

C  1.8 

hy  2.3 
mt  1.2 
il  0. 5 
hm  1. 1 

6  m.  E.  of  Ironton, 
Missouri. 

W.  H.  Melville. 

E.  Haworth, 

A.  R.  Mo.  G.  S.,  VIII, 
p.  181,  1890. 

Granite. 

Sum  low. 

SrO 

LisO 

trace 

trace 

Q  33.1 
or  36. 1 
ab  22. 0 
an  5.8 

hy  1.2 
mt  1. 1 
il  0.6 

Big  Timber  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.  148, 
p.  142,  1897. 

Granitite. 

SrO 

Li20 

0.08 

trace 

Q  13.5 
or  24. 5 
ab  35. 6 
an  15. 8 

di  2. 4 
hy  4.9 
mt  1.2 
il  0.9 

Sweet  Grass  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.  148, 
p.  142,  1897. 

Porphyrite. 

SrO 

Li20 

trace 

trace 

Q  31.9 
or  28. 9 
ab  28. 8 
an  5.6 

C  1.3 

hy  0.6 
mt  0.8 

Yogo  Peak,  Little 

Belt  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.R.U.  S.G.S.,  III, 
p.  523,  1900. 

Rhyolite-por¬ 

phyry. 

so3 

Cl 

SrO 

trace 

trace 

0.00 

Q  27.4 
or  26. 1 
ab  28. 8 
an  10. 6 

C  0.7 

hy  1.6 
mt  0.2 
il  0. 6 
hm  0. 6 

Wolf  Butte,  Little 

Belt  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.R.U.  S.  G.  S.,  Ill, 
p.  499,  1900. 

Granite-por¬ 

phyry. 

so3 

Cl 

SrO 

trace 

trace 

0. 09 

Q  20.0 
or  29. 5 
ab37. 2 
an  6.7 

C  1.0 

hy  1.8 
mt  0.2 
il  0.6 
hm  2. 1 

Mount  Barker,  Little 
Belt  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.  R.  U.  S.  G.  S. ,  III, 
p.  505,  1900. 

Granite-por¬ 

phyry. 

S03 

Cl 

SrO 

trace 

trace 

0. 09 

Q  18.1 
or  28. 9 
ab34. 6 
an  10. 0 

di  1.5 
hy  2.9 
mt  1.8 
il  0.6 
hm  0. 3 

Thunder  Mountain, 
Little  Belt  Moun¬ 
tains,  Montana. 

H.  N.  Stokes. 

L.  V.  Pirsson, 

20  A.R.U.  S.G.  S-,  III, 
p.  509,  1900. 

Granite-por¬ 

phyry. 

SrO 

0.03 

Q  16.4 
or  30. 6 
ab34. 6 
an  8. 1 

di  2.3 
hy  4. 1 
mt  2.  6 
il  0.5 

Big  Baldy  Mountain, 
Little  Belt  Moun¬ 
tains,  Montana. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.R.U. S.G. S.,  Ill, 
p.  511,  1900. 

Quartz-syenite- 

porphyry. 

SrO 

LUO 

0. 07 
trace 

(1  16.1 
or  28.  9 
ab  33. 5 
an  8.9 

di  2.4 
hy  5.4 
mt  2.1 
il  -0.5 

Sheep  Creek,  Little 
Belt  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.R.U.  S.  G.S.,111, 
p.  497,  1900. 

Granite-syenite- 

aplite. 

ZrO-> 

S03' 

Cl 

SrO 

0. 37 

trace 

0.05 

0.08 

Q  12.6 
or  30. 0 
ab  37. 2 
an  9.7 

di  3. 0 
hy  2.8 
mt  3.5 
il  0.9 

Wright  and  Edwards 
Mine,  Barker,  Lit¬ 
tle  Belt  Mts.,  Mont. 

W.  F.  Hille- 
brand. 

L.  V.  Pirrson, 

20 A.R.U.  S.G. S., Ill, 
p.  466,  1900. 

Syenite. 

Zr02 

FeSj 

SrO 

LioO 

Cu 

0.02 

0. 39 

0.02 

trace 

0.03 

Q  25.5 
or  37.8 
ab‘22.5 
an  7.2 

C  1.1 

hy  2.7 
mt  0.5 
il  0.5 

Modoc  Mine,  Butte 
District,  Montana. 

W.  F.  Hille- 
brand. 

W.  H.  Weed, 

B.  U.  S.  G.  S.  168, 
p.  119,  1900. 

Quartz-por¬ 

phyry. 

Near  dellenose. 

14128— No.  14—03 


11 


162 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 
RANG  2.  DOMALKALIC.  TOSCAXASE— Continued. 


No. 

Si02 

ALA 

1 

FeA 

FeO  j 

l 

MgO 

CaO 

Na20 

to 

O 

1 _ 

h2o+ 

H20- 

co2 

Ti02  1 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

30 

67.  12 

15.  00 

1.62 

2. 23 

1.  74 

3.  43 

2.76 

4.  52 

0.  58 

0. 09 

none 

0.  48 

0. 15 

0.  06 

0.  07 

99.  88 

Al.  I 

1.119 

.147 

.010  ' 

.031 

.044 

.061 

.044 

.048 

.006 

.001 

.001 

— 

31 

68. 42 

15.01 

0. 97 

1.93 

1.21 

2.  60 

3.  23 

4.  25 

0.  73 

0.  54 

0.  20 

0.  50 

0.13 

0.  06 

0. 12 

99.95 

Al.  I 

1.140 

.147 

.006 

.027 

.030 

.047 

.051 

.046 

.006 

.001 

.001 

.001 

32 

73.  84 

12.  47 

0.  32 

0.  90 

0.  25 

1.08 

2.  88 

5.38 

2.  76 

trace 

99.88 

A3.  Ill 

1.231 

.122 

.002 

.012 

.006 

.020 

.047 

.058 

— 

33 

71.85 

13.17 

2.17 

1.34 

0.  63 

2.  25 

4.  06 

3.  89 

0. 43 

0. 43 

0. 14 

0. 12 

100. 48 

A2.  II 

1.198 

.129 

.014 

.018 

.016 

.040 

.065 

.041 

.005 

.001 

.002 

34 

71.62 

14.  99 

1.27 

1.01 

0.  74 

1.33 

3. 62 

4.81 

0. 41 

0.  08 

trace 

0. 17 

100. 05 

A2.  II 

1.194 

.147 

.008 

.014 

.019 

.023 

.058 

.051 

.001 

.002 

35 

69.  45 

14.  92 

3. 16 

0.  23 

0.05 

1.19 

3. 19 

5.95 

1.69 

0. 19 

0.  06 

0. 07 

0.  03 

100. 18 

Al.  I 

1.158 

.146 

.020 

.003 

.001 

.021 

.051 

.064 

.002 

— 

.001 

— 

36 

64.40 

15.  77 

2.  47 

1.15 

2.12 

3.  54 

4.10 

3.  81 

1.93 

0.  31 

0.  40 

0. 16 

0.  04 

100. 37 

Al.  I 

1.073 

.154 

.015 

.016 

.053 

.063 

.066 

.041 

.005 

.001 

37 

73.  50 

14.87 

0.  95 

0.  42 

0.  29 

2. 14 

3. 46 

3.  56 

0.  90 

none 

none 

0.  03 

none 

100. 12 

Al.  I 

1. 225 

.146 

.006 

.006 

.007 

.038 

.056 

.038 

— 

— 

38 

67.  29 

15.  78 

1.86 

1.97 

0.  72 

2.  36 

3.77 

3.  55 

2. 10 

0.  27 

none 

0.  28 

0.  21 

none 

100. 16 

Al.  I 

1.122 

.154 

.012 

.  .028 

.018 

.042 

.061 

.038 

— 

.002 

.003 

— 

39 

68.  60 

16.  21 

1.67 

1.57 

1.05 

2.  61 

3.  29 

3.  88 

0.  92 

0. 19 

none 

0.  21 

0.  09 

100.  32 

2.  640 

Al.  I 

1.143 

.159 

.010 

.022 

.026 

.047 

.053 

.041 

— 

.001 

.001 

27° 

40 

65.  94 

16.  00 

0.  60 

1.74 

1.02 

2.  87 

3.  85 

4.  56 

1.13 

1.55 

none 

0.  23 

none 

100.  26 

2.  672 

A2.  II 

1.099 

.157 

.004 

.024 

.026 

.051 

.062 

.049 

— 

.002 

— 

21° 

41 

65.51 

17.  01 

none 

2.79 

0.90 

3. 16 

3.82 

4.  67 

1.78 

0. 13 

100. 15 

2.666 

A2.II 

1.092 

.167 

— 

.039 

.023 

.056 

.061 

.050 

.001 

26° 

42 

70.  87 

15. 18 

2. 18 

0. 12 

0.  60 

1.58 

3. 47 

5.  04 

1.08 

trace 

trace 

trace 

100. 12 

A2.  II 

1.181 

.149 

.014 

.002 

.015 

.029 

.056 

.054 

— 

— 

— 

43 

63.  88 

19.  96 

2.  21 

0.  57 

0.  58 

2.  03 

4.  i9 

3.88 

2.  63 

trace 

99.  93 

A3.  Ill 

1.065 

.195 

.014 

.008 

.015 

.036 

.068 

.041 

— 

44 

71.56 

14.91 

1.47 

1.04 

0. 08 

1.98 

3.  78 

4.  94 

0.44 

trace 

100.  20 

2.  59 

A3.  Ill 

1.193 

.146 

.009 

.014 

.002 

.036 

.061 

.053 

— 

18° 

45 

68.  85 

17.01 

1.78 

0.  65 

trace 

1.62 

3.  44 

5.11 

1.  79 

trace 

100.  25 

2.  489 

A3.  Ill 

1.148 

.167 

.011 

.009 

— 

.029 

.055 

.055 

14° 

46 

68.  61 

16.  43 

0.  73 

1.52 

0. 05 

1.79 

2.  82 

4.  65 

3.  35 

99.  95 

2.  423 

A3.  Ill 

1.144 

.161 

.005 

.021 

.001 

.032 

.045 

.050 

14° 

PERSALANE - TOSCANOSE. 


ORDER  4.  QU ARDOFELIC.  BRITANNARE— Continued. 

SUBRANG  3.  SODIPOTASSIC.  TOSCANOSE— Continued. 


163 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03 

Cr»03 

Sr5 

LioO 

trace 

none 

0.03 

trace 

Q  23.5 
or  26. 7 
ab  23. 1 
an  15. 3 

di  1.4 
hy  5.0 
rnt  2.3 
il  0.9 

Near  Boulder,  Mon¬ 
tana. 

H.  N.  Stokes. 

W.  II.  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Granite. 

S 

NiO 

SrO 

0.02 

none 

0.03 

Q  25.1 
or  25. 6 
ab  26. 7 
an  13. 1 

C  0.3 

hy  5. 0 
mt  1.4 
il  0.9 

Idaho-Hailey  Mine, 
Hailey,  Idaho. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

20  A.  R.U.  S.G.  S.,  Ill, 
p.  81,  1900. 

Quartz-mon- 

zonite. 

Q  32.9 
or  32. 2 
ab  24. 6 
an  4:7 

di  0.8 
hy  1.5 
mt  0.5 

Midway  Geyser 

Basin,  Yellowstone 
National  Park. 

II.  N.  Stokes. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.  150, 
p.  153,  1898. 

Rhyolite-per¬ 

lite. 

Q  28.9 
or  22. 8 
ab  34. 1 
an  6. 4 

di  3.5 
mt  3.2 
il  0.6 

Towrer  Creek,  Yel¬ 
lowstone  National 
Park. 

F.  A.  Gooch. 

J.  P.  Iddings, 

M.U.  S.G.  S.,  XXXII, 
p.  426,  1899. 

Rhyolite. 

Cl 

trace 

Q,  28.1 
or  28. 4 
ab  30. 4 
an  6.4 

C  1.5 

hy  2.8 
mt  1. 9 

Hurricane  Ridge, 
Crandall  Basin,  Yel¬ 
lowstone  Natl.  Pk. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.U.  S.G.  S.,  XXXII, 
p.  261, 1899. 

Aplite. 

Q  25.6 
or  35. 6 
ab  26. 7 
an  5.8 

C  1.0 

il  0.3 
hm  3. 2 

Sunset  Peak,  Bear 
Gulch,  Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.U.  S.G.  S.,  XXXII, 
p.  325,  1899. 

Rhyolite. 

NiO 

0. 17 

Q  16.1 
or  22. 8 
ab  34. 6 
an  13. 1 

di  3. 4 
hy  3.7 
mt  2.6 
il  0.8 
hm0.6 

Hurricane  Ridge, 
Crandall  Basin,  Yel¬ 
lowstone  Natl.  Pk. 

W.  H.  Mel¬ 
ville. 

J.  P.  Iddings, 

M.U.  S.G.  S.,  XXXII, 
p.  261,  1899. 

l 

Quartz-mica- 

diorite- 

porphyry. 

SrO 

trace 

Q  34.7 
or  21. 1 
ab  29. 3 
an  10. 6 

C  1.4 

hy  0.7 
mt  1.4 

Prospect  Mt. ,  Mosqui¬ 
to  Range,  Leadville 
District,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

M.  U.S.  G.  S.,  XII, 
p.  326,  1886. 

Quartz-por¬ 

phyry. 

SrO 

Li30 

none 

trace 

Q,  24.6 
or  21.1 
ab  32. 0 
anil.  7 

C  1.3 

hy  3.9 
mt  2. 8 

Sugar  Loaf,  Ten  Mile 
District,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

14  A.  R.  U.  S.  G.  S., 
p.  227,  1894. 

Quartz-por- 

phyrite. 

Cl 

SrO 

0.03 

trace 

Q  26.8 
or  22. 8 
ab  27. 8 
an  13. 1 

C  1.8 

hy  4.3 
mt  2.3 

McNulty  Gulch, 
Leadville,  Colo¬ 
rado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  176,  1897. 

Granite-por¬ 

phyry. 

FeSo 

0.60 

Q  17.4 
or  27.2 
ab  32. 5 
an  12. 8 

di  1.1 
hy  4.7 
mt  0. 9 
pr  0. 6 

Jefferson  Tunnel, 
Leadville,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  176,  1897. 

Granite-por¬ 

phyry. 

Cl 

S 

trace 

0. 38 

Q  15.2 
or  27. 8 
ab  32. 0 
an  15. 6 

hy  7.4 

Jefferson  Tunnel, 
Leadville,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  176,  1897. 

Granite-por¬ 

phyry. 

Same  as  No  40. 

Q  26.9 
or  30.0 
ab  29. 3 
an  8. 1 

C  1.0 

hy  1.5 
mt  0. 5 
hm  1. 9 

Pennsylvania  Hill, 
Rosita  Hills,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  324,  1896. 

Rhyolite. 

Q  19.4 
or  22. 8 
ab  35. 6 
an  10.0 

C  5.1 

hy  1.5 
mt  2. 8 

Robinson  Plateau, 
Silver  Cliff,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

17  A.  R.  U.  S.  G.  S.,II, 
p.  321,  1896. 

Andesite. 

“Decomposed.” 

Q  26.0 
or  29.5 
ab  32. 0 
an  8.9 

di  1.0 
hy  0.4 
mt  2. 1 

Round  Mountain,  Elk 
Mountains,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  177,  1897. 

Rhyolite. 

Q  25.8 
or  30. 6 
ab  28. 8 
an  8.1 

C  2.9 

mt  2.5 

Summit  District,  Rio 
Grande  County, 
Colorado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  179,  1897. 

Rhyolite. 

Q  29.6 
or  27. 8 
ab  23. 6 
an  8.9 

C  3.5 

hy  2.2 
mt  1.2 

Del  Norte,  Rio 

Grande  County, 
Colorado. 

L.  G.  Eakins. 

W.  Cross, 

B.  IJ.  S.  G.  S.  148, 
p.  179,  1897. 

Rhyolite. 

104 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 
RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A1A 

Fe203 

EeO 

MgO 

CaO 

Na20 

O 

N 

M 

1 

h2o+  h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.gr. 

47 

65.  70 

15.  31 

2.  54 

1.62 

1.62 

2.  56 

3.62 

4.  62 

0.42 

0. 17 

none 

0.  72 

0.  33 

trace 

0.12 

99.  53 

2.  720 

Al.I 

1. 095 

.150 

.015 

.022 

.041 

.047 

.058 

.049 

.009 

.002 

.001 

.  34° 

48 

69.  52 

15.44 

1.90 

0.  09 

0. 17 

1.70 

4.54 

5.04 

0.  27 

0.  33 

0.17 

0.  23 

0. 14 

0.08 

0.  19 

99.  90 

Al.I 

1.169 

.151 

.012 

.001 

.004 

.030 

.073 

.054 

.003 

.001 

.001 

.001 

49 

66. 12 

17.  21 

2.  43 

trace 

0.  35 

2. 11 

4.  70 

5.57 

0.71 

0. 14 

0.  29 

0. 11 

0.  08 

0.  25 

100. 18 

Al.I 

1.102 

.168 

.015 

.009 

.038 

.076 

.060 

.004 

.001 

.001 

.002 

50 

74.  49 

14.51 

0.57 

0.  32 

trace 

1.03 

3.  79 

4.  64 

0.  64 

trace 

99.99 

A3.  Ill 

1.242 

.142 

.004 

.004 

— 

.018 

.061 

.050 

— 

’ 

51 

71.56 

14.  28 

0.  89 

none 

0.  42 

1. 18 

3.  00 

4.  37 

0.  79 

0.  36 

none 

0.38 

none 

trace 

0.  28 

100.  01 

Al.I 

1.193 

.140 

.006 

— 

.011 

.021 

.048 

.047 

.005 

— 

— 

.002 

52 

69.  18 

14.  37 

2.  52 

0.  57 

0.  70 

1.88 

3.  58 

5.00 

0.25 

0.  35 

0.  69 

0.  26 

0. 10 

0.09 

99.  55 

Al.  I 

1.153 

.141 

.015 

.008 

.018 

.034 

.058 

.054 

.008 

.002 

.001 

.001 

53 

75.  01 

13.  88 

0.  74 

n.  d. 

0.  09 

1.00 

3.  52 

4.  89 

0.  26 

0.11 

none 

0. 06 

trace 

trace 

0. 10 

99.66 

A2.  II 

1.250 

.136 

.005 

(.010) 

.002 

.018 

.056 

.053 

.001 

— 

— 

.001 

54 

73.51 

14.  42 

0.  46 

1.49 

0.  33 

1.26 

4.  03 

4.  29 

0.  40 

0.04 

trace 

100.  23 

A3.  Ill 

1.225 

.141 

.003 

.021 

.008 

.022 

.064 

.046 

— 

— 

55 

73.  64 

13.  44 

0.  60 

0.  74 

0.  26 

1.26 

3.51 

4  50 

1.99 

0.11 

0.  06 

0.  06 

0. 11 

100.  30 

Al.  I 

1.227 

.132 

.004 

.010 

.007 

.022 

.056 

.048 

.001 

— 

.001 

.001 

56 

73.  25 

13.  25 

none 

1.  74 

0.  28 

2.  23 

2.  69 

3.  79 

1.03 

0. 07 

1.05 

i  race 

trace 

trace 

trace 

99.96 

Al.  I 

1.221 

.130 

.024 

.007 

.039 

.043 

.061 

— 

- — - 

— 

— 

57 

72.  40 

14.  81 

0.81 

0.  88 

0. 47 

1.94 

3.  91 

3.  90 

0.  59 

0.  18 

0.  03 

0.07 

0. 10 

100. 13 

Al.'I 

1.207 

.145 

.005 

.012 

.012 

.035 

.063 

.041 

.002 

— 

.001 

.001 

58 

71.39 

14. 13 

0.  63 

0.  37 

0.08 

1.01 

2.  89 

5.69 

3.  32 

0.42 

0. 17 

0.  03 

trace 

0.  09 

100.  22 

Al.  I 

1.190 

.138 

.004 

.005 

.002 

.018 

.047 

.061 

.002 

— 

— 

.001 

59 

76. 03 

13.  39 

0.  48 

0.  31 

0.05 

1.28 

2.  98 

5. 18 

0.  34 

0. 15 

0.  07 

0.03 

trace 

0.  04 

100.  33 

Al.  I 

1.267 

.121 

.003 

.005 

.001 

i 023 

.048 

.055 

.001 

— 

— 

— 

60 

75.97 

13.07 

0.  61 

0.  39 

0. 14 

1.49 

2.51 

5.  62 

0.  24 

0. 14 

none 

0.  09 

trace 

trace 

0. 14 

100.  44 

Al.  I 

1.266 

.128 

.004 

.005 

.004 

.027 

.040 

.060 

.001 

— 

— 

.001 

61 

71.08 

15.90 

0.  62 

1.31 

0.54 

2.  60 

3. 54. 

4.  08 

0.  30 

none 

trace 

0. 22 

0. 10 

0. 15 

0.  04 

100.  60 

Al.  I 

1.185 

.156 

.004 

.018 

.014 

.047 

.057 

.043 

.003 

.001 

.002 

— 

62 

65.  81 

15. 11 

1.85 

1.40 

0.  37 

1.98 

2.  59 

5.24 

n.  d. 

0. 54 

0.  23 

0. 10 

95.  22 

2.  38 

A2.  II 

1.097 

.148 

.012 

.019 

.009 

.036 

.042 

.056 

.007 

.002 

63 

62.  33 

17.30 

3. 00 

1.63 

1.05 

3.  23 

4.21 

4.46 

0.  75 

0. 44 

1.05 

0.  29 

0.  08 

0.24 

100.  33 

Al.  I 

1.039 

.170 

.019 

.022 

.026 

.057 

.068 

.048 

.013 

.002 

.001 

.002 

PERSALANE - TOSCANOSE. 


165 


ORDER  4.  QU A RDOFELIC.  BRITANNARE — Continued. 

SUBRANG  3.  SODII’OTASSIC.  TOSCANOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

Cl 

SrO 

Li20 

0.12 

0.03 

0.03 

trace 

Q  19.1 
or  27. 2 
ab  30.  4 
an  12. 1 

C  0.4 

hy  4. 1 
mt  3.  5 
il  1.4 

Near  San  Miguel  Peak, 
Telluricle,  Colo¬ 
rado. 

H.  N.  Stokes. 

W.  Cross, 

Telluride  folio,  U.  S. 
G.  S.,  p.  6,  1899. 

Quartz-monzo- 

nite. 

ZrO.> 

SrO" 

0.05 

0. 04 

Q  21.1 
or  30.0 
ab  38. 3 
an  6.7 

di  0.9 
il  0. 2 
hm  1. 9 
tn  0.4 

Robbin’s  Ranch, 

Pikes  Peak,  Colo¬ 
rado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  163,  1897. 

Trachyte? 

ZrO.) 

SrO 

0.06 

0.05 

Q  12.4 
or  33. 4 
ab  39. 8 
an  8.9 

di  0.4 
hy  0.9 
hm  2. 4 
tn  0. 7 

Wicher  Mountain, 
Pikes  Peak,  Colo¬ 
rado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  163,  1897. 

Trachyte? 

LioO 

trace 

Q  32.4 
or  27. 8 
ab  32. 0 
an  5.0 

C  1.3 

mt  0. 9 

Thomas  Range,  Utah. 

L.  G.  Eakins. 

W.  Cross, 

Pr.  Colo.  Sc.  Soc.,  II, 
p.  69,  1887. 

Rhyolite. 

FeS., 

Cr203 

v2o3 

SrO 

LioO 

As 

2.29 

trace 

0.02 

trace 

none 

trace 

Q  34.2 
or  26. 1 
ab  25. 2 
an  5. 8 

C  2.5 

hy  1. 1 
hm  0. 9 
pr  2.3 

Swansea  Mine,  Tintic 
District,  Utah. 

H.  N.  Stokes. 

Tower  and  Smith, 

19  A.  R.  U.  S.G.S.,  III, 
p.  637,  1899. 

Quartz-por¬ 

phyry. 

Cl 

Cr203 

v2o3 

MoO 

SrO 

trace 

trace 

0. 01 

trace 

trace 

Q  24.0 
or  30. 0 
ab  30. 4 
an  8. 1 

di  1.1 
hy  1.3 
il  1.2 
hm  2. 5 

S.  of  Pinvon  Creek, 
Tintic  District, 

Utah. 

H.  N.  Stokes. 

Tower  and  Smith, 

19  A.  R.  U.  S.  G.  S., 
Ill,  p.  634,  1899. 

Rhyolite. 

SrO 

LioO 

trace 

trace 

Q  32.9 
or  29. 5 
ab  29. 3 
an  5.0 

C  0.9 

hy  1.5 

Skwentna  River, 
Alaska. 

H.  N.  Stokes. 

J.  E.  Spurr, 

A.  G.,  XXV,  p.  231, 
1900. 

Alaskite. 

Q  29.7 
or  25. 6 
ab  33. 5 
an  6. 1 

C  0.9 

hy  3.2 
mt  0.7 

Medicine  Lake, 

Modoc  County, 
California. 

L.  G.  Eakins. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  228,  1897. 

Rhyolite-obsid¬ 

ian. 

SrO 

Li.,0 

0.02 

trace 

Q  32.8 
or  26.  7 
ab  29. 3 
an  6. 1 

C  0.6 

hy  1.  6 
mt  0.9 

Slate  Creek, 

Tehama  County, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  192,  1897. 

Rhyolite. 

Dried  at  110°. 

FeS.» 

SrO' 

LioO 

0.58 

trace? 

trace 

Q  30.1 
or  33. 9 
ab  22. 5 
an  7.2 

di  3.2 
hy  2.3 

Tower  Rock,  Grizzly 
Mountains,  Plumas 
County,  California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S., 
II,  p.  484,  1894. 

Quartz-por¬ 

phyry. 

SrO 

Li20 

0.04 

trace 

Q  29.6 
or  22. 8 
ab  33. 0 
an  9.7 

C  0.7 

hy  2.1 
mt  1. 2 

Mount  Stover, 

Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  192,  1897. 

Rhyolite. 

Dried  at  110°. 

SrO 

Li.jO 

trace 

trace 

Q  30.2 
or  33. 9 
ab24. 6 
an  5. 0 

C  1.2 

hy  0.4 
mt  0.9 

Near  Grizzly  Peak, 
Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

J.  G.,  Ill,  p.  407, 

1895. 

Rhyolite. 

SrO 

LioO 

trace 

trace 

Q  36.3 
or  30. 6 
ab25. 2 
an  5.0 

di  1.0 
mt  0.7 

Yuba  Gap,  Sierra 
County,  California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

J.  G.,  Ill,  p.  403, 

1895. 

Aplite. 

Near  tehamose. 

Cr203 

NiO 

SrO 

LioO 

none 

none 

0. 03 
trace 

Q  36.4 
or  33.4 
ab  21 . 0 
an  7.5 

hy  0. 6 
mt  0.9 

East  of  Milton, 

Sierra  County,  Cali¬ 
fornia. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

J.  G.,  VII,  p.  160, 
1899. 

Aplite. 

Near  tehamose. 

ZrOo 

so3- 

C1 

SrO 

Li20 

0. 08 

none 

0.02 

0.02 

trace 

Q  27.8 
or  23. 9 
ab29. 9 
an  13.1 

C  0.9 

hy  3.3 
mt  0. 9 

El  Capitan,  Yosemite 
Valley,  California. 

W.  Valentine. 

H.  IV.  Turner, 

J.  G.,  VII,  p.  143, 
1899. 

Biotite-granite. 

Q  25.7 
or  31.1 
ab  22. 0 
an  10. 0 

C  1.4 

hy  0.9 
mt  2. 8 
il  1.1 

Griswold  Creek,  Cali¬ 
fornia. 

G.  Steiger. 

F.  L.  Ransome, 

A.  J.  S.,  V, 
p.  363,  1898. 

Biotite-augite- 

latite. 

H20  not  de¬ 
termined. 

ZrOo 

FeS.' 

v»o3 

SrO 

LioO 

Org. 

0.04 

0.06 

0.01 

0.05 

trace 

0.11 

Q  12.4 
or  26. 7 
ab35. 6 
an  15. 0 

di  0.8 
hy  2.3 
mt  2. 1 
il  2.0 
hm  1. 6 

Clover  Meadow,  Tuo¬ 
lumne  County,  Cal¬ 
ifornia. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  727,  1896. 

Trachyte. 

“Latite,”  cf. 

F.  L.  Ran¬ 
some,  B.  U.  S. 

G.  S.  89, 

p.  58,  1898. 

166 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS.  I.  PERSALANE— Continued. 


RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A12Os 

FeA 

FeO 

MgO 

O 

9= 

o 

Na20 

k2o 

h2o+ 

H20- 

co2 

TiG2 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

64 

70. 43 

15.51 

0.  96 

1.28 

0.  37 

2.  76 

2.  75 

5. 14 

0.  40 

0.  08 

none 

0.  24 

0.11 

trace 

2.  20 

100. 28 

Al.  I 

1.174 

.152 

.006 

.018 

.009 

.049 

.044 

.055 

.003 

.001 

.001 

65 

72.  48 

14.  06 

0.  89 

1.05 

0.  62 

2. 17 

3.  30 

4.  75 

0.  35 

0. 16 

0.  28 

0.  09 

trace 

0.08 

100.  28 

Al.  I 

1.208 

.138 

.006 

.015 

.016 

.039 

.053 

.051 

.004 

.001 

— 

.001 

66 

66.  83 

15.  24 

2.  73 

1.66 

1.63 

3.  59 

3. 10 

4.46 

0.  56 

none 

trace 

0.  54 

0. 18 

0.  10 

0. 11 

100.  82 

Al.  I 

1.114 

.149 

.017 

.023 

.041 

.064 

.050 

.048 

.007 

.001 

.001 

.001 

67 

67.  39 

15.99 

0.  56 

1.99 

0.  77 

1.63 

4.  74 

4.  80 

2.  06 

99.  93 

A3.  Ill 

1.123 

.156 

.003 

.028 

.019 

.029 

.076 

.051 

68 

70.  39 

14.  09 

0.  53 

2. 12 

0.  62 

3.  08 

3.  70 

3.51 

2.  50 

100. 54 

2.41 

A3.  Ill 

1.173 

.138 

.003 

.030 

.016 

.055 

.059 

.037 

69 

69.  96 

15.  78 

2.50 

n.  d. 

0.64 

1.73 

3.  80 

4. 12 

1.53 

100.  07 

A4.  IV 

1. 166 

.155 

.016 

(.032) 

.016 

.030 

.061 

.043 

70 

75.  08 

13.  63 

1.35 

0.  28 

0. 17 

1.22 

3.  79 

4.  22 

0.  23 

0. 03 

0.  06 

trace 

100.  06 

2.  354 

A2.  II 

1.251 

.134 

.009 

.004 

.004 

.021 

.061 

.045 

— 

— 

— 

71 

68.  40 

* 

16.  89 

2.  95 

n.  d. 

trace 

1.50 

4.  25 

3. 98 

1.94 

99.  91 

A4.  IV 

1.140 

.  1G5 

.019 

(.038) 

— 

.027 

.069 

.042 

72 

70.  48 

14.  24 

3.  72 

n.  d. 

0.  40 

1.48 

3.  66 

4.  26 

1.59 

99.  83 

A4.  IV 

1.175 

.140 

.023 

(.046) 

.010 

.027 

.059 

.046 

73 

67.  79 

16.30 

4.43 

n.  d. 

1.45 

2.  32 

3.  49 

3.  48 

0.  95 

0.  27 

100. 98 

A4.  IV 

1.130 

.160 

.027 

(.054) 

.036 

.041 

.056 

.037 

.002 

• 

74 

75.  74 

13.  71 

0.  55 

n.  d. 

trace 

1.26 

3.  72 

4.  69 

0.  46 

0. 17 

100.  30 

A3.  Ill 

1.262 

.134 

.003 

(.006) 

— 

.022 

.060 

.050 

.002 

75 

70. 54 

14.  77 

3.  70 

n.  d. 

0.  36 

1.68 

4.  66 

4.  82 

0.44 

99.  97 

A4.  IV 

1.176 

.145 

.023 

(.046) 

.009 

.030 

.075 

.051 

76 

62.  35 

19. 50 

3.05 

2.  25 

1.46 

2.  40 

2.  71 

3.  28 

0.  75 

1.25 

0. 18 

99.  18 

B2.  Ill 

1.039 

.191 

.019 

.031 

.037 

.043 

.044 

.035 

.015 

.002 

77 

70.05 

14.  78 

n.  d. 

3.  37 

0.44 

3.  42 

3. 10 

4. 13 

0. 42 

0. 19 

0.  22 

100. 12 

A3.  Ill 

1.168 

.145 

— 

.048 

.011 

.060 

.050 

.043 

.002 

.003 

78 

72.  76 

14.89 

0.  95 

n.  d. 

0. 46 

1.26 

4.  25 

4.  50 

0.  54 

trace 

0. 13 

99.  74 

A3.  Ill 

'  1.213 

.146 

.006 

(.012) 

.012 

.023 

.069 

.048 

— 

.001 

79 

71.21 

13.  95 

0.  65 

2.  22 

0.  94 

2.  28 

2.  87 

4.  86 

0.  89 

0. 42 

100.  29 

A3.  Ill 

1.187 

.137 

.004 

.030 

.024 

.039 

.047 

.052 

.006 

80 

69.  79 

14.  23 

0. 10 

2.58 

0.  61 

1.  73 

3.  27 

4.  45 

3. 19 

0.  24 

100. 19 

A3.  Ill 

1.163 

.140 

.001 

.036 

.015 

.030 

.053 

.047 

.003 

PERSALANE — TOSCANOSE. 


167 

ORDER  4.  QUARROFELIC.  BRITANN  ARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  TOSCANOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

FeS.j  trace 

SrO  0. 05 

Li«0  trace 

Q  27.8 
or  30. 6 
ab  23. 1 
an  23.  6 

C  0.4 

hy  2.2 
mt  1.4 
il  0.5 

North  Fork  of  Tuo¬ 
lumne  River,  Ama¬ 
dor  County,  Cal. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

J.  G.,  VII, 
p.  143,  1889. 

Biotite-granite. 

SrO  trace 

• 

Q  29.4 
or  28. 4 
ab  27. 8 
an  9.5 

di  1.1 
hy  1.7 
mt  1.4 
il  0.6 

Lake  Tenaya,  Mari¬ 
posa  County,  Cali¬ 
fornia. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14  A.  R.  U.S.  G.S.,  II, 
p.  482,  1894. 

Granite-por¬ 

phyry. 

V 

Zr02  0.04 

S03  none 

Cl  0. 02 

SrO  0. 03 

LioO  trace 

Q  22.2 
or  26. 7 
ab  26. 2 
an  14. 2 

di  2.6 
hy  3.4 
mt  3.9 
il  1.1 

Nevada  Falls  Trail, 
Yosemite  Valley, 
California, 

W.  Valentine. 

H.  W.  Turner, 

J.  G.,  VII, 
p.  152,  1899. 

Quartz-mon- 

zonite. 

“Granite”  in  B. 
U.  S.  G.  S.168, 
p.  208,  1900. 

Q  15.5 
or  28.4 
ab  39. 8 
an  8.1 

hy  5.2 
mt  0. 7 

Mono  Lake,  Cali¬ 
fornia. 

W.  H.  Melville. 

W.  Lindgren, 

B.  U.  S.  G.  S.,  150, 
p.  149,  1898. 

Rhyolite- 

pumice. 

HaO  includes  S 

Q  27.4 
or  20. 6 
ab  30. 9 

an  11. 7 
% 

di  3.2 
hy  3.6 
mt  0. 7 

Northwest  Harbor, 

San  Clemente 

Island,  California. 

W.  S.  T.  Smith. 

W.  S.  T.  Smith, 

18  A.  R.  U.  S.  G.  S., 
II,  p  488,  1898. 

Rhyolite. 

Q  26.0 
or  23.9 
ab  32. 0 
an  8.3 

C  2.1 

hy  5. 8 

McClellan  Peak, 
Washoe,  Nevada. 

F.  A.  Gooch. 

Hague  and  Iddings, 

B.  U.  S.  G.  S.,  17, 
p.  33,  1885. 

Dacite. 

• 

Q  34.1 
or  25. 0 
ab32.0 
an  5.8 

C  0.7 

hy  0.4 
mt  0.9 
hm  0.8 

Lagune  di  Maricunga, 
Chile. 

F.  Wolff. 

■ 

F.  Wolff, 

Z.  D.  G.  G.,  LI, 
p.  546,  1899. 

Liparite. 

9 

Q  22.9 
or  23. 4 
ab  36.2 
an  7.5 

C  2.8 

hy  5.0 

Maskordshnur,  Ice¬ 
land. 

C.  W.  Schmidt. 

C.  W.  Schmidt, 

Z.  D.G.G.,  XXXVII, 
p.  744,  1885. 

Liparite. 

Q,  26.1 
or  25. 6 
ab  30. 9 
an  7.5 

C  0.8 

hy  7.1 

Slieve-na-Gloch,  Carl- 
ingford,  Ireland. 

S.  Haughton. 

W.  J.  Sollas, 

T.  R.  Ir.  Ac.,  XXX, 
Pt.  XI,  p.  491,  1894. 

Granite. 

Q  24.0 
or  20. 6 
ab  29. 3 
an  11. 4 

C  2.7 

hylO.  8 

Ferrieres,  Esterel, 
France. 

Riist. 

A.  Michel-Levy, 

B,S.  C.  G.  Fr., 

No.  97,  p.  27,  1897. 

Quartz-por¬ 

phyry. 

Q.  33.2 
or  27. 8 
ab  31.4 
an  6. 1 

C  0.2 

hy  0.5 
il  0.3 

Lier,  Norway. 

R.  Mauzelius. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  77,  1890. 

Granite. 

Q  19.0 
or  28. 4 
ab  39.3 
an  5.3 

di  2.7 
hy  5.5 

Loken,  n.  Holmes- 
trand,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K„  XVI, 
p.  57,  1890. 

Aegirite-gran- 

ite. 

* 

Q  26.5 
or  19.5 
ab  23. 1 
an  12. 0 

C  7.0 

hy  3.7 
mt  3.7 
il  2.3 
hm  0.5 

Thinghoud,  Norway. 

s 

G.  Sarnstrom. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  46,  1890. 

Akerite. 

Sum  low. 

Q  26.3 
or  23. 9 
ab  26. 2 
an  14. 5 

di  2.0 
hy  6.5 

Kortfors,  Orebro, 
Sweden. 

H.  Santesson. 

H.  Backstrom, 

G.  F.  F.,  XVI, 
p.  108,  1894. 

Granite. 

Q  26.5 
or  26. 7 
ab  36. 2 
an  6.4 

C  0.6 

hy  2.8 

Hamphorfva, 

Smaland,  Sweden. 

H.  Santesson. 

0.  Nordenskjold, 

Abh.  Sv.  G.  Und., 

No.  135,  p.  35,  1894. 

Microgranite. 

Q  27.9 
or  28.9 
ab  24. 6 
an  10. 8 

hy  5. 9 
mt  0. 9 

Lake  Mien,  Sweden. 

H.  Santesson. 

N.  0.  Holst,  Abh.  Sver. 
G.  Und.  No.  110, 
p.  37,  1890. 

Rhyolite. 

Q  27.2 
or  26. 1 
ab  27. 8 
an  8.3 

C  1.0 

hy  6.  i 
mt  0.2 

Lake  Mien,  Sweden. 

H.  Santesson. 

N.  0.  Holst,  Abh.  Sver. 
G.  Und.  No.  110, 
p.  37,  1890. 

1 

Rhyolite. 

168 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 

RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

k20  I 

h2o+ 

h2o  - 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

81 

68.  55 

14.  73 

0.37 

2.  56 

1.39 

2.83 

2.88 

4.10 

2.  34 

0.73  j 

' 

100.  48 

A3.  Ill 

1.143 

.144 

.002 

.036 

.035 

.050 

.047 

.043 

.010 

82 

67.00 

15.  79 

0.02 

3. 10 

0.97 

1.77 

2. 14 

4.  74 

4.  43 

99.96 

A3.  Ill 

1.117 

.155 

— 

.043 

.024 

.032 

.034  ! 

.050 

83 

69.  92 

14.  78 

1.54 

1.75 

1.05 

1.88 

2.  92 

4. 16 

1.51 

0.  43 

99.  94 

A3.  Ill 

1. 165 

.145 

.009 

.025 

.026 

.034 

.047 

.044 

.006 

84 

69.  48 

13.  88 

2.  67 

1.  53 

0.71 

2.  39 

3.  74 

4.44 

1.19 

0. 15  i 

100. 18 

A3.  Ill 

1.158 

.136 

.017 

.021 

.018 

.043 

.059 

.047 

.002 

85 

73.  38 

14.  36 

0.  86 

0.  79 

0.  46 

1.33 

2.85 

4.  98 

0.  37 

0.  20 

0.  22 

99.80 

A2.  II 

1.223 

.141 

.005 

.011 

.012 

.023 

.046 

.054 

.003 

.003 

86 

71.63 

16.10 

1.01 

n.  d. 

0.  26 

1.72 

3.  96 

4.49 

0.  60 

99.  77 

2.59 

A3.  Ill 

1.194 

.158 

.006 

(.012) 

.007 

.030 

.064 

.048 

87 

66.  88 

17.89 

3.  75 

n.  d. 

1.53 

1.44 

3.55 

3.  77 

1.93 

0.  08 

100.  82 

2.68 

A4.  IV 

1. 115 

.175 

.024 

(.048) 

.038 

.025 

.057 

.040 

88 

65.  91 

15.  58 

2.07 

2. 19 

1.41 

2.  40 

4.  01 

3.  94 

1.15 

0.  11 

0.  58 

0.20 

99.84 

2.613 

A2.  II 

1.099 

.153 

.013 

.030 

.035 

.043 

.064 

.042 

.007 

.001 

89 

64.  55 

13.62 

1.23 

1.24 

0.  67 

5.07 

3.  48 

4. 13 

1.90 

3.70 

0.  29 

0. 10 

100.  03 

2.  593 

A2.  II 

1.076 

.133 

.007 

.017 

.017 

.091 

.056 

.043 

.004 

.001 

90 

62.  20 

14.  69 

3.83 

0.  43 

1.86 

2.91 

2.82 

5.03 

2.  47 

3.35 

0.52 

0.  20 

100.  43 

2.631 

A2.  II 

1.037 

.144 

.024 

.006 

.047 

.051 

.045 

.054 

.006 

.001 

91 

66.  75 

15.  87 

1.82 

2.  31 

0.91 

1.99 

3. 13 

4.  40 

2.  74 

99.  92 

A3.  Ill 

1.113 

.155 

.011 

.032 

.022 

.036 

.050 

.047 

92 

71.  53 

13.  55 

1.20 

0.  88 

1.45 

3.21 

2.61 

3.95 

1.75 

100. 13 

A3.  Ill 

1.192 

.133 

.007 

.012 

.036 

.057 

.042 

.042 

93 

69.94 

13.  45 

0.  49 

4.  64 

0.  67 

2.  26 

2.42 

4.25 

0.  77 

0. 45 

0.  23 

99.  71 

2.712 

A2.  II 

1.166 

.132 

.003 

.064 

.017 

.040 

.039 

.  046 

.006 

.002 

94 

71.93 

15.54 

0.  59 

2. 10 

0.  46 

1.60 

2.61 

5.30 

0.69 

trace 

0.  27 

101. 09 

2.664 

B2.  Ill 

1. 199 

.152 

.004 

.030 

.012 

.027 

.042 

.057 

— 

.002 

95 

69.  66 

16.98 

2.54 

n.  d. 

0.  83 

1.66 

3.  95 

4.41 

0. 55 

0.02 

100.  70 

A4.  IV 

1.161 

.167 

.016 

(.032) 

.021 

.030 

.064 

.047 

— 

96 

68.  58 

1  15.67 

2.  95 

n.  d. 

1.17 

1  2.10 

2.  36 

5.01 

1.30 

0.  40 

99.  54 

A4.  IV 

1.143 

.153 

.019 

(.038) 

.029 

.038 

.038 

.054 

.003 

97 

65.  82 

15.  94 

5.  06 

n.  d. 

trace 

1.65 

3.54 

6. 17 

1.85 

trace 

100. 03 

2.  68- 

A4.  IV 

1.097 

.156 

.032 

(.064) 

— 

.030 

1 

.057 

.066 

— 

1 

PERSALANE - TOSCANOSE. 


169 


ORDE  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  3.  SQDIPOTASSIC.  TOSCANOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  26.0 
or  23.9 
ab  24. 6 
an  13. 9 

C  0.4 

hy  8.0 
mt  0.5 

Lake  Mien,  Sweden. 

H.  Santesson. 

N.  0.  Holst,  Abh.  Sver. 
G.  Und.  No.  110, 
p.  37,  1890. 

Rhyolite. 

Q  28.9 
or  27. 8 
ab  17. 8 
an  8.9 

C  4.0 

hy  8.1 

Lake  Mien,  Sweden. 

H.  Santesson. 

N.  0.  Holst,  Abh.  Sver. 
G.  Und.  No.  110, 
p.  37,  1890. 

Rhyolite. 

Q  30.5 
or  24.5 
ab  24. 6 
an  9.5 

C  2.0 

hy  4. 6 
mt  2. 1 

Brusen,  Helsingland, 
Sweden. 

H.  Santesson. 

F.  Svenonius,  G.  F.  F., 
X,  p.  273,  1888. 

Andesite  brec¬ 
cia. 

“  Dellenite  ”  of 
Brogger. 

Q  25. 0 
or  26. 1 
ab  30. 9 
an  8.3 

di  3.0 
hy  0.9 
mt  3.9 

Dellen,  Helsingland, 
Sweden. 

H.  Santesson. 

■ 

F.  Svenonius,  G.  F.  F., 
X,  p.  273,  1888. 

.  , 

Hypersthene- 

andesite. 

“Dellenite ”  of 
Brogger,  Eg. 
Kg.  II, 
p.  59,  1895. 

Q  33.1 
or  30. 0 
ab  24. 1 
an  6.4 

C  1.8 

hy  1.6 
mt  1. 2 
il  0. 5 

Lake  Raslangen, 
Scania,  Sweden. 

H.  Santesson. 

. 

H.  Backstrom,  Sv.  Vet. 
Ak.  Hd.,  XXIX, 
p.  8,  1897. 

Granite. 

Q  26.6 
or  26.  7 
ab  33. 5 
an  8. 3 

C  1.6 

hy  2.3 

Lestiware,  Umptek, 
Finland. 

H.  Berghell. 

W.  Ramsay, 

Fennia,  XI, 
p.  72,  1894. 

Granite. 

Q  23.8 
or  22. 2 
ab  29. 9 
an  7.0 

C  5.4 

hy  10. 1 

Lainersdorf,  Aachen, 
Rh.  Prussia. 

F.  H.  Hatch. 

A.  von  Lasaulx,cf  N.  J., 
1886,  I,  p.  53. 

Granite. 

so3 

Org. 

0. 14 

0.15 

Q  19.9 
or  23.4 
ab  33. 5 
an  11. 9 

C  0.4 

hy  4. 8 
mt  4. 1 

Lemberg,  NaheThal, 
Rh.  Prussia. 

Jacobs. 

K.  A.  Lossen, 

Z.  D.  G.  G.,  XL, 
p.  203,  1888. 

Quartz-porpliy- 

rite. 

S03  for  S. 

so3 

0. 05 

Q  20.0 
or  23. 9 
ab  29. 3 
an  9.5 

di  5.2 
hy  3.9 
mt  1.6 
il  0.6 

Munster  am  Stein, 
Nahe  Thai,  Rh.  • 
Prussia. 

K.  Bottcher. 

Iv.  A.  Lossen, 

Z.  D.  G.  G.,  XLIII, 
p.  537,  1891. 

Granite-por¬ 

phyry. 

S03  for  S. 

Not  fresh. 

so3 

0. 12 

Q  18.0 
or  30. 0 
ab  23.  6 
an  12. 5 

di  1.2 
hy  4.1 
il  0.9 
hm3.8 

Near  Kreuznach,  Rh. 
Prussia. 

K.  Bottcher. 

K.  A.  Lossen, 

Z.  D.  G.  G,  XLIII, 
p.  537,  1891. 

Quartz-por¬ 

phyry. 

S03  for  S. 
Decomposed. 

Q  25.0 
or  26. 1 
ab26. 2 
an  10. 0 

C  2.2 

hy  5. 0 
mt  2. 6 

Brandenberg,  Mun- 
sterthal,  Schwarz- 
wald,  Baden. 

Bunsen’s  Lab¬ 
oratory. 

A.  Schmidt,  cf  N.  J., 
1889,  I,  p.  95. 

Porphyry. 

Q  32.5 
or  23. 4 
ab  22. 0 
an  13. 6 

di  1.8 
hy  3.4 
mt  1.6 

Pfaffenberg, 

Riesengebirge, 

Silesia. 

W.  Herz. 

' 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  162,  1899. 

Granitite. 

so3 

0. 14 

Q  30.2 
or  25. 6 
ab  20. 4 
an  11.1 

C  0.7 

hy  9.1 
mt  0.7 
il  0.9 

Elbingerode,  Harz 
Mountains. 

Fischer. 

K.  A.  Lossen, 

Z.  D.  G.  G.,  XL, 
p.  203,  1888. 

Hypersthene- 

quartz- 

porphyrite. 

S03  for  S. 

Li20 

Cu 

trace 

trace 

Q  30.8 
or  31.7 
ab  22. 0 
an  7.5 

C  2.7 

hy  4.7 
mt  0.  9 

Zwisenburg, 

Fichtelgebirge,? 

Bavaria. 

A.  Bottger. 

F.  v.  Sandberger, 

Sb.  Munch.  Ak., 
XVIII,  p.  466,  1888. 

Lithionite- 

granite. 

Sum  high. 

Q  22.9 
or  26. 1 
ab  33. 5 
an  8.3 

C  2.7 

hy  6.3 

Carlsbad,  Bohemia. 

A.  Schwager. 

Schwager  and  Giimbel, 
Geogn.  Jhft.  Cassel, 
VII,  p.  69,  1895. 

Granite. 

Given  to  three 
decimals. 

Q  26.9 
or  30. 0 
ab  19. 9 
an  10. 6 

C  2.3 

hy  7.9 

Adalbertus  Rock, 
Bohemia. 

L.  Jesser?  not 
stated. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XV, 
p.  209,  1896. 

Granitite. 

I 

Q  13.9 
or  36. 7 
ab  29. 9 
an  8. 3 

C  0.3 

hy  8.4 

Miekinia,  Cracow, 
Galicia. 

R.  Zuber. 

R.  Zuber, 

Sb.  Wien,  G.  R.-A., 
XXXV,  p.  750,  1885. 

Quartz-por¬ 

phyry. 

170 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 


RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A12Oj 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

h2o- 

co2 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

98 

72.  79 

13.  77 

1.69 

n.  d. 

0.  28 

1.24 

3.39 

4. 38 

2. 41 

99.95 

2.  416 

A3.  Ill 

1.213 

.135 

.011 

(.022) 

.007 

.022 

.055 

.047 

• 

99 

72.  48 

12.  68 

2.31 

n.  d. 

0.  73 

2.39 

3.30 

4.35 

1.31 

99.  55 

2.  458 

A4.  IV 

1.208 

.124 

.014 

(.028) 

.018 

.043 

.053 

.047 

100 

67.99 

17.54 

1.17 

0.  82 

0.  13 

1.44 

4.  92 

5.  78 

0.  05 

99.  84 

A3.  Ill 

1.133 

.172 

.007 

.011 

.003 

.026 

.079 

.062 

101 

70.  44 

15.63 

1.34 

1. 12 

0.55 

1.98 

4.  03 

5. 18 

0.  55 

100. 82 

A3.  Ill 

1.174 

.153 

.008 

.015 

.014 

.036 

.064 

.056 

102 

68.  89 

14.  05 

2. 18 

1.43 

0.  83 

2.15 

4.  56 

4.30 

0.  41 

0.  23 

0.  03 

trace 

0.  58 

101.00 

Bl.  II 

1.148 

.138 

.014 

.019 

.021 

.039 

.073 

.046 

.003 

— 

_ 

.004 

103 

64.  88 

16.  43 

3.  69 

0.54 

0. 19 

2.  22 

3.  73 

6.57 

1. 17 

0.  49 

99.91 

A3.  Ill 

1.081 

.161 

.023 

.007 

.005 

.039 

.059 

.070 

104 

65. 58 

15.  79 

0.  94 

2.  44 

1.47 

3.  08 

2.  58 

5.  67 

1.16 

0.  58 

trace 

trace 

100.  21 

2.527 

AI.  I 

1.093 

.155 

.006 

.034 

.037 

.055 

.042 

.060 

.007 

— 

— 

15° 

105 

65.  32 

15.34 

1.22 

2. 18 

1.51 

2.  99 

2.  75 

5.  70 

1.97 

0.  40 

trace 

101.  03 

2.552 

Bl.  II 

1.089 

.150 

.008 

.030 

.038 

.053 

.044 

.061 

.005 

— 

15° 

106 

65.31 

16.  36 

0.  68 

1.68 

1.06 

2.  85 

2.  78 

5. 97 

1.01 

0.  47 

trace 

trace 

100. 31 

2.  546 

Al.  I 

1.089 

.160' 

.004 

.023 

.027 

.051 

.045 

.064 

.006 

— 

— 

15° 

107 

64.  76 

16.  48 

0.  74 

2.  74 

1.74 

3.  24 

2.  67 

5. 49 

1.62 

0.  42 

trace 

trace 

100. 32 

2.  562 

Al.  I 

1.079 

.162 

.005 

.038 

.044 

.058 

.043 

.058 

• 

.005 

— 

15° 

108 

63. 15 

16.  29 

1.  76 

2.  40 

1.87 

3.  61 

2.  46 

5.  96 

2.  28 

0.  30 

trace 

trace 

100.  77 

2.  615 

Al.  I 

1.053 

.160 

.011 

.033 

.049 

.064 

.040 

.063 

.004 

— 

— 

15° 

109 

65.  71 

16.  46 

0.  96 

3.  04 

1.09 

3.  05 

3.  03 

5.04 

1.83 

trace 

100.  21 

A3.  Ill 

1.095 

.161 

.006 

.042 

.027 

.054 

.048 

.054 

— 

110 

64.57 

16.  80 

0.  97 

3.02 

1.69 

3.  53 

3.  81 

4.  01 

1.28 

99.  68 

2.542 

A3.  Ill 

1.074 

.165 

.006 

.042 

.042 

.063 

.061 

.043 

111 

74.  53 

13.60 

2.18 

n.  d. 

0.  28 

1.03 

3.  43 

4.56 

0.38 

99.  99 

A4.  IV 

1.242 

.133 

.014 

(.028) 

.007 

.018 

.055 

.049 

112 

72.  60 

15.48 

1.52 

n.  d. 

1.50 

1.  71 

3.  46 

3.32 

0.  92 

99.  51 

A3.  Ill 

1.210 

.152 

.009 

(.018) 

.038 

.030 

.056 

.035 

113 

75.  76 

14.  36 

0.  86 

ii.  d. 

0. 12 

1.20 

4.  02 

3.82 

0.  37 

100. 51 

A3.  Ill 

1.263 

.141 

.005 

(.010) 

.003 

.021 

.064 

.040 

114 

73.  20 

13.  40 

1.76 

n.  d. 

0. 10 

1.46 

3.17 

4.  70 

2.  77 

100.  56 

A3.  Ill 

1.220 

.131 

.011 

(.022) 

.003 

.027 

.051 

.050 

PERSALANE - TOSCANOSE. 


171 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  TOSCANOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  31.7 
or  26.1 
ab  29. 2 
an  6.1 

C  1.1 

hy  3. 6 

Hlinik,  Hungary. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  444,  1887. 

Obsidian. 

Q  29.7 
or  26. 1 
ab  27. 8 
an  6.7 

'  di  4. 6 
hy  3.2 

Apate,  Schemnitz, 
Hungary. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  448,  1887. 

Liparite. 

Q  13.7 
or  34. 5 
ab  41. 4 
an  7.2 

C  0.5 

hy  0.8 
mt  1.6 

Halasag,  Ditro, 
Siebenburgen, 
Hungary. 

J.  v.  Szadeczky. 

J.  v.  Szadeczky, 

Sb.  Sieb.  Mus.  Ver., 
XXI,  1900,  cf.  N.  J., 
1901,  I,  p.  402. 

Quartz-nord- 

markite. 

Q,  21.8 
or  31.1 
ab  33. 5 
an  9. 2 

di  0.8 
hy  1.9 
mt  1.9 

Topla,  S.  Carinthia, 
Austria. 

H.  V.  Graber. 

H.  V.  Graber, 

Jb.Wien,  G.  R.-A., 
XLVII,  p.  278,  1897. 

Granite. 

ZrOo 

b2o3 

S03 

Cl 

F 

FeSo 

Cu 

Pb 

trace 

0.38 

0.30 

0. 07 

0.02 

0.49 

0.03 

0.04 

Q  21.0 
or  25. 6 
ab  38.  3 
an  5.3 

di  4. 5 
hy  0. 6 
mt  3. 2 

Platta  Cotschna, 
Bundner  Oberland, 
Switzerland. 

J.  R.  Hanhart. 

A.  Bodmer-Beder, 

N.  J.  B.  B.,  XI, 
p.  239,  1897. 

Quartz-biotite- 

porphyry. 

Q  13.9 
or  38. 9 
ab  30. 9 
an  8.9 

di  1.3 
mt  1.6 
hm  2. 6 

Kaserngrat,  Wind- 
galle  Mountains, 
Switzerland. 

C.  Schmidt. 

C.  Schmidt, 

N.  J.  B.  B.,  IV, 
p.  432,  1886. 

Porphyry. 

X 

S03 

Cl 

LioO 

0.73 

0. 19 

trace 

trace 

Q  18.6 
or  33.4 
ab  22. 0 
an  14.7 

hy  7.4 
mt  1. 4 
il  1.1 

Vivo,  Mte.  Amiata, 
Tuscany. 

J.  F.  Williams. 

J.  F.  Williams, 

N.  J.  B.  B.,  V, 
p.  408,  1887. 

Trachyte. 

Dried  at  100°. 

X 

so3 

Cl 

Li20 

0. 57 

0. 03 

0. 05 
trace 

Q  18.4 
or  33.9 
ab  23. 1 
an  12.5 

di  1.9 
hy  5.1 
mt  1. 9 
il  0.8 

Above  Casa  Tasso, 

Mte.  Amiata,  Tus¬ 
can  y. 

J.  F.  Williams. 

J.  F.  Williams, 

N.  J.  B.  B.,  V, 
p.  411,  1887. 

Trachyte. 

Dried  at  100°. 

X 

so3 

Cl 

FeS2 

LioO 

0. 85 

none 

trace 

1.29 

trace 

Q  17.2 
or  35.6 
ab  23. 6 
an  14. 2 

hy  5.3 
mt  0. 9 
il  0.9 
pr  1.3 

Fosso  del  Prato,  Mte. 
Amiata,  Tuscany. 

J.  F.  Williams. 

J.  F.  Williams, 

N.  J.  B.  B.,  V, 
p.  410,  1887. 

Trachyte. 

Dried  at  100°. 

X 

so3 

Cl 

Li20 

0.33 

0.08 

0. 01 
trace 

Q  17.1 
or  32. 2 
ab  22. 5 
an  16.1 

C  0.3 

hy  8.1 
mt  1.2 
il  0.8 

Poggio  Traburzolo, 
Mte.  Amiata,  Tus¬ 
cany. 

J.  F.  Williams. 

J.  F.  Williams, 

N.  J.  B.  B.,  V, 
p.  412,  1887. 

Trachyte. 

Dried  at  100°. 

X 

SO3 

Cl 

LioO 

0. 47 

0. 11 

0.11 

trace 

Q  14.8 
or  35.0 
ab  15. 8 
an  15. 8 

di  1.5 
hy  6.5 
mt  2.6 
il  0.6 

La  Crocina,  Mte. 
Amiata,  Tuscany. 

J.  F.  Williams. 

J.  F.  Williams, 

N.  J.  B.  B.,  V, 
p.  413,  1887. 

Trachyte. 

Dried  at  100°. 

Q  18.7 
or  30. 0 
ab  25. 2 
an  15. 0 

C  0.5 

hy  7.5 
mt  1.4 

Mte.  Amiata,  Tus¬ 
cany. 

L.  Ricciardi. 

L.  Ricciardi, 

Gaz.  Chem.  Ital., 
XVIII,  1888. 

Trachyte. 

Q  14.8 
or  23. 9 
ab  32. 0 
an  17. 0 

di  0.4 
hy  8.8 
mt.1.4 

Mte.  San  Vito,  Brac- 
ciano,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  V, 
p.  362,  1897. 

Toscanite. 

Dried  at  110°. 

Q  32.8 
or  27. 2 
ab  28. 8 
an  5.0 

C  1.1 

hy  4.4 

Cannetello,  Lipari, 
Aeolian  Islands. 

F.  Glaser. 

A.  Bergeat, 

Abh.  Miinch.  Ak., 
XX,  p.  118,  1899. 

Obsidian 

Q  32.9 
or  19. 5 
ab  29. 3 
an  8.3 

C  3.2 

hy  6.2 

N.  of  Kamary,  n.  Bal- 
aklava,  Crimea. 

Lagorio. 

A.  Lagorio, 

Guide  Exc.  7,  Cong. 
Int,  XXXIII, 
p.  27,  1897. 

Biotite-granite. 

Q  35.0 
or  22. 2 
ab  33. 5 
an  5.8 

C  1.6 

hy  1.6 

Sidi  Zerzor,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and 
Mrazec,  M.  Soc.  Ph. 
Genev.,  XXXIII, 
p.  115,  1900. 

Liparite. 

Q  32.1 
or  27.8 
ab  26. 7 
an  7.5 

C  0.3 

hy  3.2 

Cape  Marsa,  n.  Men- 
erville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and 
Ritter,  M.  Soc.  Ph. 
Genev.,  XXXIII, 
p.  77,  1900. 

Liparite. 

172 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 
RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A1.A 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

C0.2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

115 

72.  74 

12.  70 

1.91 

n.  d. 

0.  15 

1.  59 

3.60 

4. 10 

2.  92 

99.71 

A3.  Ill 

1.212 

.  124 

.012 

(.024) 

.004 

.029 

.058 

.043 

116 

73.  05 

14.67 

0.  89 

n.  d. 

0.  26 

0.  97 

3.99 

5.11 

0.91 

99.  85 

2.  211 

A3.  Ill 

1.218 

.144 

.006 

(.012) 

.007 

.018 

.064 

.  055 

21° 

117 

67.  03 

14.  25 

1.96 

1.  70 

trace 

1.05 

3.  85 

3.  90 

5.  73 

trace 

99.  47 

2.  376 

A3.  Ill 

1.117 

.140 

.013 

.024 

— 

.019 

.062 

.041 

— 

118 

73.  38 

13.  67 

0.30 

n.  d. 

0. 09 

1. 18 

2.99 

6. 47 

n.  d. 

0. 02 

0. 17 

trace 

99.  33 

A2.  II  ' 

1.223 

.134 

.002 

(.004) 

.002 

.021 

.048 

.069 

— 

.001 

— 

119 

72.  88 

14.62 

0.  43 

1.69 

0.35 

1.51 

3.  68 

4. 05 

0.  65 

0.  06 

.009 

100. 01 

A3.  Ill 

1.215 

.141 

.003 

.024 

.009 

.027 

.059 

.043 

— 

.001 

120 

72.  96 

14  57 

n.  d. 

1.62 

0.  52 

1.47 

4.59 

4.  26 

0.37 

0. 07 

trace 

100. 43 

A3.  Ill 

1.216 

.143 

— 

.022 

.013 

.027 

.074 

.046 

.001 

— 

121 

71.  25 

14.21 

0.  85 

0.  43 

0.  89 

2.  72 

3.  11 

6.  74 

0.  48 

100. 68 

A3.  Ill 

1.188 

.139 

.005 

.005 

.022 

.048 

.050 

.071 

122 

76.  48 

13.  94 

trace 

none 

0.  01 

1.08 

3.  70 

4.90 

0.  86 

0. 15 

101.12 

2.  611 

B2.  Ill 

1.275 

.  136 

— 

— 

— 

.020 

.060 

.053 

RANG  2 

.  DOMALKALIC. 

TOSCANASE. 

1 

64.  83 

15.02 

5.  57 

0.  94 

1.47 

2.  62 

3.  93 

2.  36 

1.  76 

0.55 

0.  67 

0.  29 

100. 02 

A2.  II 

1.081 

.147 

.035 

.013 

.037 

.047 

.063 

.025 

.008 

.004 

2 

73.  27 

15.51 

0.  33 

1.14 

0. 15 

2.  74 

4.  79 

1.  66 

0.  68 

. 

0. 10 

trace 

trace 

100.  37 

A2.  11 

1.221 

.152 

.002 

.016 

.004 

.049 

.077 

.018 

.001 

— 

— 

3 

70.  64 

15.34 

1.83 

1.10 

0.  52 

1.24 

5.  23 

3.  55 

0.38 

0.14 

0.  90 

trace 

100.  87 

2.  632 

B2.  Ill 

1.177 

.150 

.011 

.014 

.013 

.022 

.084 

.038 

.011 

- _ 

12.5° 

4 

69.  70 

18.  72 

0. 65 

0.  79 

0. 45 

2.  25 

5.01 

1.68 

0.  71 

99.  96 

A3.  Ill 

1. 162 

.183 

.004 

.011 

.011 

.040 

.080 

.018 

5 

67.  42 

15.  88 

1.37 

1.14 

1.43 

3.  49 

6.  42 

2.  65 

0.  05 

0.  07 

99.92 

A3.  Ill 

1.124 

.155 

.009 

.016 

.036 

.062 

.103 

.030 

.001 

6 

66.84 

18.  22 

2.  27 

0.  20 

0.81 

3.  31 

5. 14 

2.  80 

0.  46 

trace 

100. 05 

A3.  Ill 

1.114 

.178 

.014 

.003 

.020 

.059 

.083 

.030 

— 

7 

69.  93 

14.95 

1.78 

0.  55 

0.  60 

1.46 

5.30 

3.99 

0.  32 

0.12 

0.33 

0.33 

trace 

0.29 

100.  01 

Al.  I 

1.166 

.147 

.011 

.008 

.015 

.022 

.085 

.042 

.004 

.002 

.002 

8 

66.  28 

16.21 

0.  80 

2.  ob 

1.57 

3.53 

4.  36 

3.  20 

0.  78 

0. 12 

0.  50 

0.  20 

trace 

0.34 

100. 00 

Al.  1 

1.105 

.159 

.005 

.029 

.049 

.063 

.070 

.035 

.006 

.001 

— 

.002 

9 

65.  87 

16.  82 

1.58 

1.23 

1.54 

2.  65 

4.  72 

3. 15 

1.43 

0.  37 

trace 

99.  36 

2.  62 

B2.  Ill 

1.098 

.  165 

.010 

.017 

.039 

.047 

.076 

.034 

.004 

— 

PERSALANE - LASSENOSE. 


173 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBHANG  3.  SODIPOTASSIC.  TOSCANOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  31.6 
or  23.9 
ab  30. 4 
an  6. 4 

di  1.4 
hy  2.9 

Cape  Marsa,  n.  Men- 
erville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and 
Ritter,  M.  Soc.  Ph. 
Genev.,  XXXIII, 
p.  77,  1900. 

Liparite. 

Q  26.9 
or  30. 1 
ab  33. 5 
an  5.0 

C  0.7 

hy  2.3 

Teneriffe,  Canary  Is¬ 
lands. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  440,  1887, 

Obsidian. 

Q  27.0 
or  22. 8 
ab  32. 5 
an  5. 3 

C  1.8 

hy  1.5 
mt  3.0 

Ainba  Barra,  Abys¬ 
sinia. 

G.  T.  Prior. 

G.  T.  Prior, 

Min.  Mag.,  XII, 
p.  270,  1900. 

Pitchstone. 

Zr02  trace 

FeS.,  0. 94 

CuS'  0. 06 

PbS  0. 06 

Q  28.9 
or  38.  4 
ab  25. 2 
an  4.7 

hy  0.8 
ap  0. 4 
pr  0. 9 

Adadle,  Somali  Pen¬ 
insula,  East  Africa. 

Not  stated. 

J.  R.  Hanhart? 

A.  Bodmer-Beder, 
cf.  N.  J.,  1895,  I, 
p.  318. 

Granite. 

Q  31.1 
or  23. 9 
ab  30.  9 
an  7.5 

C  1.2 

hy  3.7 
mt  0.7 

Konyam  Bay,  Siberia. 

Lind  strom. 

Tornebohm, 
cf.  N.  J.,  1885,  I, 
p.  430. 

Biotite-granite. 

Q  24.7 
or  25.  6 
ab  38. 8 
an  6. 4 

di  1.0 
hy  3.7 

Konyam  Bay,  Siberia. 

Lindstrom. 

Tornebohm, 

cf.  N.  J.,  1885,  I, 
p.  430. 

Biotite-granite. 

Q  22.4 
or  39. 4 
ab  26. 2 
an  5.0 

di  4.8 
wo  1.0 
mt  1.3 

Lan  Biang,  Battak 
Plateau,  Sumatra. 

W.  Herz. 

L.  Milch, 

Z.  D.  G.  G.,  LI, 
p.  69,  1899. 

Liparite. 

Q  33.4 
or  29. 5 
ab  31. 4 
an  5. 6 

Orr’s  Gully,  Dargo, 
Victoria,  Australia. 

A.  W.  Howitt. 

A.  W.  Howitt, 

Tr.  R.  Soc.  Viet.,  1887. 
cf.  N.  J.,  1889,  I,  121. 

Aplite. 

Sum  high. 

SUBRANG 

4.  DOSODIC.  LASSENOSE. 

Q,  25.3 
or  13.9 
ab  33. 0 
an  13. 1 

C  1.2 

hy  3.7 
mt  1.2 
il  1.2 
hm.4.8 

Titus’  Mill,  Upham, 
New  Brunswick. 

W.  D.  Matthew. 

W.  D.  Matthew, 

Tr.  N.  Ab  Ac.  Sc., 
XIV,  p.  207,  1895. 

Granite. 

Mean  of  two. 

Q  32.1 
or  10. 0 
ab  40. 3 
an  13. 6 

C  0.8 

hy  2.3 
mt  0.5 

Moore’s  quarry, 
Florence,  Massa¬ 
chusetts. 

L.  G.  Eakins. 

B.  K.  Emerson, 

M.  U.S.  G.  S.,  XXIX, 
p.  316,  1898. 

Granite. 

Q  23.3 
or  21. 1 
ab  44. 0 
an  6. 1 

C  0.6 

hy  1.3 
mt  0.7 
il  1.7 
hm  1. 3 

Marblehead  Neck, 
Essex  County, 
Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

.T.  G.,  VII,  p.  292, 
1899. 

Rhyolite. 

Q  28.6 
or  10. 0 
ab  41.9 
anil.  1 

C  4.8 

hy  2.0 
mt  0.9 

Kawishiwi  River, 
Minnesota. 

A.  D.  ivieeds. 

U.  S.  Grant, 

21  A.  R.  G.  Nh.  S. 
Minn.,  p.  43,  1893. 

Quartz- 

porphyry. 

Q  11.9 
or  16.7 
ab  54. 0 
an  6.2 

di  9.2 
mt  2. 1 

Kekequabic  Lake, 
Minnesota. 

Dodge  and 
Sidener. 

U.  S.  Grant, 

21  A.  R.  G.  Nh.  S. 
Minn.,  p.  41,  1893. 

Augite-granite. 

Also  in  A.  G., 
XI,  p.  385, 
1893. 

Q  17.9 
or  16. 7 
ab  43. 5 
an  16. 4 

C  0.6 

hy  2.0 
mt  0.7 
hm  1.8 

Kekequabic  Lake, 
Minnesota. 

Dodge  and 
Sidener. 

U.  S.  Grafnt, 

21  A.  R,  G.  Nh.  S. 
Minn.,  p.  41,  1893. 

Augite-granite. 

Also  in  A.  G., 
XI,  p.  385, 
1893. 

SrO  0. 06 

Li«0  trace 

Q  20.9 
or  23. 4 
ab  44. 3 
an  5.6 

hy  1.5 
mt  0. 9 
il  0.6 
hm  0. 5 

North  part  of  Crazy 
Mountains,  Mon¬ 
tana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.  148, 
p.  142,  1897. 

Granite- 

porphyry. 

SrO  0. 05 

LioO  trace 

Q.  17.5 
or  19. 5 
ab  36. 7 
an  15. 0 

di  2.0 
hy  6.3 
mt  1. 2 
il  0.9 

Sweet  Grass  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.  148, 
p.  142,  1897. 

Porphyrite. 

Q  18.0 
or  18.9 
ab39. 8 
an  13. 1 

C  0.8 

hy  4.5 
mt  2. 3 
il  0.6 

Castle,  Castle  Moun¬ 
tains,  Montana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.  139, 
p.  106,  1896. 

Porphyry. 

174 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 

RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k20 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

10 

62.58 

16.  42 

2.  46 

1.96 

1.84 

2.  47 

4.57 

3.91 

1.40 

0.  38 

0.  77 

0.  40 

0.  33 

0.  08 

0. 41 

100.  08 

Al.  I 

1.043 

.161 

.015 

.028 

.046 

.045 

.073 

.041 

.005 

.002 

.001 

.003 

11 

67.  55 

15.  68 

0.  98 

1.02 

1.  11 

2.51 

4. 15 

2.  86 

2.  76 

0.38 

none 

0.  34 

0. 12 

trace 

0.11 

99.65 

Al.  I 

1.126 

.  153 

.006 

.014 

.028 

.045 

.062 

.030 

.004 

.001 

— 

.001 

12 

69.  56 

15.  29 

0.  86 

2.  06 

0.  69 

2.81 

3.97 

3.36 

0.  86 

0. 55 

0. 16 

100. 17 

A2.  II 

1.159 

.150 

.005 

.029 

.017 

.050 

.064 

.036 

.007 

.001 

13 

75.  50 

13.  25 

1.02 

0.91 

0.  07 

0.  90 

4.  76 

2.  85 

0.  41 

none 

none 

none 

100. 05 

A2.  II 

1.258 

.130 

.006 

.012 

.002 

.016 

.077 

.031 

— 

— 

- — 

14 

72.  59 

13.47 

1.58 

1.32 

1.  05 

2. 12 

4.  63 

2.  52 

0.  18 

0.  52 

none 

100.  24 

A2.  II 

1.205 

.132 

.010 

.018 

.026 

.038 

.074 

.026 

.006 

— 

15 

70. 52 

15.  85 

2.  28 

0.  36 

0.  09 

2.59 

3.  93 

3.43 

0.35 

trace 

0. 17 

0.09 

99.  95 

A2.  II 

1.175 

.155 

.014 

.005 

.002 

.047 

.063 

.036 

— 

.001 

.001 

16 

70*.  24 

17.36 

1.38 

0.  79 

0.53 

2.  74 

3.  69 

2.  65 

0.71 

none 

trace 

trace 

none 

100. 09 

A2.  II 

1.171 

.170 

.009 

.011 

.013 

.049 

.059 

.  Q29 

— 

— 

— 

17 

69.  24 

15.  30 

1.72 

0.  69 

0.  95 

2.  98 

4.46 

2.  52 

1.30 

0.  65 

trace 

trace 

100.  08 

A2.  II 

1.164 

.150 

.011 

.010 

.024 

.053 

.072 

.027 

.008 

— 

— 

18 

67.  95 

14.  98 

2. 33 

0.  95 

1.42 

3.  98 

4.39 

2.  86 

0.  61 

0.  45 

0.  45 

0.  07 

0.09 

0.  23  . 

100. 79 

Al.  I 

1.133 

.147 

.015 

.013 

.036 

.071 

.071 

.030 

.006 

.001 

.001 

.002 

19 

67.  49 

16. 18 

1.30 

1.22 

1.34 

2.68 

4.  37 

2.  40 

2.  69 

0. 13 

0. 13 

0.  08 

100.  01 

A2.  11 

1.125 

.159 

.008 

.017 

.034 

.048 

.070 

.026 

.002 

.001 

.001 

20 

66.  64 

16.  22 

1.84 

1.06 

1.25 

2.41 

5. 11 

3.  86 

0.  55 

0.  52 

none 

0.  29 

0. 16 

trace 

0.27 

100. 34 

Al.  I 

1.111 

.159 

.012 

.015 

.031 

.043 

.082 

.041 

.004 

.001 

— 

.002 

21 

65.  64 

17.  29 

3.07 

1.29 

1.78 

1.98 

5.  77 

2.  44 

1.03 

0.17 

none 

0.  23 

trace 

100. 73 

A2.  II 

1.094 

.170 

.019 

.018 

.045 

.036 

.093 

.026 

— 

.002 

— 

22 

64.  65 

17.  80 

2.33 

2. 10 

0.  81 

1.73 

4. 18 

2.  83 

3.06 

trace 

trace 

trace 

100. 09 

A2.  II 

1.078 

.174 

.014 

.030 

.020 

.030 

.•068 

.030 

— 

— 

— 

23 

67.  78 

16.  67 

1.99 

0. 51 

0.  71 

2.  67 

4.91 

3.  43 

1.44 

0. 19 

trace 

100.  30 

A2.  II 

1.130 

.163 

.013 

.007 

.018 

.048 

.079 

.036 

.001 

— 

24 

66. 45 

15.  84 

2.  59 

1.43 

1.21 

2.90 

3.  92 

2.89 

0.  84 

1.35 

0. 10 

0.  36 

0.  09 

none 

100. 09 

2.  670 

Al.  I 

1.108 

.155 

.016 

.020 

.030 

.051 

.063 

.031 

« 

.001 

.002 

.001 

16° 

25 

63.  02 

17.  61 

1.78 

2.  76 

1.63 

3.  30 

4.  72 

3.  23 

2.  03 

0. 16 

trace 

0. 08 

100.  32 

2.  689 

A2.  II 

1.050 

.173 

.011 

.039 

.041 

.059 

.076 

.034 

.001 

— 

.001 

16.5° 

26  ’ 

67.  49 

17.  76 

2.54 

0.  08 

0.  35 

1.67 

5.  03 

4.  40 

0.  52 

trace 

trace 

99.  84 

A3.  Ill 

1.125 

.174 

.015 

.001 

.009 

.030 

.080 

.047 

— 

— 

PERSALANE - LASSENOSE. 


175 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 


SUBRANG  4.  DOSODIC.  LASSENOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO 

Li20 

0. 10 
trace 

Q  12.9 
or  22.8 
ab  38. 3 
an  12. 5 

C  0.2 

hy  5. 6 
nit  3. 5 
il  0.8 

Near  Yogo  Peak,  Lit¬ 
tle  Belt  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

L.  Y.  Pirsson, 

20  A.  R.  U.  S.  G.  S. ,  III, 
p.  514,  1900. 

Syenite-por¬ 

phyry. 

Cl 

SrO 

Li..O 

0. 05 

0.03 

trace 

Q  27.1 
or  16. 7 
ab  32. 5 
an  12. 5 

C  1.6 

hy  3.3 
mt  1. 4 
il  0.6 

Butte,  Montana. 

% 

H.  N.  Stokes. 

Weed  and  Tower, 

B.  U.  S.  G.  S.  168, 
p.  119,  1900. 

Rhyolite-dacite- 

obsidian. 

NoZr02  or  S03. 

Q  25.5 
or  20. 0 
ab  33. 5 
an- 13. 9 

hy  3.9 
mt  1.2 
il  1.1 

Schafer  Butte,  Boise 
County,  Idaho. 

G.  Steiger. 

W.  Lindgren, 
20A.R.U.S.  G.  S.,111, 
p.  81,  1900. 

Granite. 

S03 

LioO 

0.32 

0.06 

Q  34.2 
or  17.2 
ab  40. 3 
an  4. 4 

C  0.6 

hy  1.1 
mt  1. 4 

Obsidian  Cliff,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.  150, 
p.  160,  1898. 

Rhyolite. 

S03  for  S? 

Near  kaller- 
udose. 

FeS2 

0.26 

Q  30.4 
or  14. 5 
ab  38. 8 
an  8.9 

di  1.4 
hy  2. 2 
mt  2. 3 
il  0.9 

East  of  Willow  Park, 
Yellowstone  Na¬ 
tional  Park.  , 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.S.  G.S.,  XXXII, 
p.  426,  1899. 

Obsidian. 

S03 

LioO 

0. 29 
trace 

Q  29.1 
.or  20. 0 
’ab  33.0 
an  13. 1 

hy  0. 2 
nit  1. 2 
hml.  4 

Bunsen  Peak,  Yellow¬ 
stone  National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.S.  G.S.,  XXXII, 
p.  87,  1899. 

Mica-dacite- 

porphyry. 

S03  for  S? 

so3 

Cl 

LioO 

trace 

none 

none 

Q.  31.9 
or  16.1 
ab  30. 9 
an  13. 6 

C  3.4 

hy  1.3 
mt  2.3 

Birch  Hills,  Yellow¬ 
stone  National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.  S.  G.  S.,  XXXII, 
p.  163,  1899. 

Mica-dacite- 

porphyry. 

so3 

Cl 

Li20 

0. 27 

trace 

none 

Q  26.6 
or  15.0 
ab  37.7 
an  14. 2 

hy  2.  4 
mt  0. 5 
il  1.2 
hml.  4 

Electric  Peak,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 
p.  627,  1891. 

Quartz-mica- 

diorite-por- 

phyrite. 

S03  for  S? 

so3 

SrO 

0. 11 
trace? 

Q  22.4 
or  16.7 
ab  37. 2 
an  11.8 

di  5.4 
hy  1. 1 
mt  1. 9 
il  0.8 
hml.  1 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

• 

T.  M.  Chatard. 

J.  P.  Iddings, 

M.U.  S.  G.  S.,  XXXII, 
p.  272,  1899. 

Andesite- 

breccia. 

Breccia. 

S03  for  S? 

» 

Q  24.6 
or  14. 5 
ab  36. 7 
an  13. 3 

C  1.5 

hy  4. 6 
mt  2. 0 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 
p.  648,  1891. 

Dacite. 

ZrOo 

S 

Cr,.0:! 

V203 

SrO 

0.01 

trace 

trace 

0.01 

0.14 

Q  15.6 
or'  22. 8 
ab  43. 0 
an  10. 0 

di  1.6 
hy  2.7 
mt  2. 8 
il  0.5 

Sulphur  Creek  Basin, 
Yellowstone  Na¬ 
tional  Park. 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S  168, 
p.  95,  1900. 

Syenite-por¬ 

phyry. 

No  NiO. 

so3 

Cl 

trace 

trace 

Q  15.8 
or  14.5 
ab  48.7 
an  10. 0 

C  1.5 

hy  4.5 
mt  4. 4 

Gray  Peak,  Yellow¬ 
stone  National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.S.  G.  S.,  XXXII, 
p.  81,  1899. 

Andesite-por¬ 

phyry. 

S03 

LioO 

0. 43 

0. 17 

Q  23.6 
or  16.7 
ab  35. 6 
an  8. 3 

C  4.7 

hy  4.2 
mt  3. 2 

Elk  Creek,  Yellow¬ 
stone  National 

Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.  S.G. S., XXXII, 
p.  325,  1899. 

Trachytic  rhy¬ 
olite. 

Q  19.0 
or  20.0 
ab  41. 4 
an  13. 3 

C  1.0 

hy  1.9 
mt  2. 5 

Garfield  Peak,  Wyo¬ 
ming. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  116,  1897. 

Dacite? 

Cl 

SrO 

LioO 

0.05 

0.07 

trace 

Q  24.5 
or  17.2 
ab  33.0 
an  14.2 

C  1.0 

hy  3.5 
mt  3. 7 

Mount  Lincoln, 
Leadville,  Colo¬ 
rado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

M.  U.  S.  G.  S.,  XII, 
p.  332,  1886. 

Porphyry. 

Q  12.2 
or  18.9 
ab  39. 8 
an  16.4 

C  0.4 

hy  7.7 
mt  2. 6 

McNulty  Gulch, 
Leadville,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.  148, 
p.  176,  1897. 

Diorite-por- 

phyry. 

Not  fresh. 
Nearlaurvikose. 

Q  17.6 
or  26. 1 
ab  41.9 
an  8.3 

C  1.7 

hy  0. 9 
hm2. 6 

Rosita  Hills,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

17  A.  R.U.  S.  G.  S.,II, 
p.  324,  1896. 

Mica-dacite. 

176 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 

RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k.2o 

H20+  II20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

27 

66.  46 

17.91 

2.  42 

0.  35 

0.  49 

2.  89 

4.  79 

3.  74 

1.01 

trace 

100.  06 

A3.  Ill 

1.108 

.  175 

.015 

.005 

.012 

.051 

.077 

.039 

— 

28 

68.  30 

16.  24 

1.60 

1.63 

1.05 

2.  79 

3.90 

3.52 

0.71 

n.  d. 

0. 13 

0. 12 

trace 

100.  03 

A2.  II 

1.138 

.159 

.010 

.022 

.026 

.050 

.063 

.037 

— 

.001 

.002 

— 

29 

65.71 

18.  30 

1.19 

1.53 

0.  98 

2.17 

5. 00 

3.95 

1.39 

0.  02 

100. 24 

A3.  Ill 

1. 095 

.179 

.007 

.021 

.025 

.039 

.080 

.042 

30 

62.  65 

16.  68 

2.  35 

2.  63 

1.43 

4.96 

4.  45 

2.  75 

0.  66 

0. 27 

0.  42 

0.  28 

0. 16 

0.  13 

99.  93 

Al.  I 

1.044 

.163 

.015 

.036 

.036 

.088 

.072 

.030 

.005 

.002 

.002 

.001 

31 

65.  78 

17.32 

3.  68 

0.  46 

0.  47 

1.  66 

5.  23 

4.  64 

0. 14 

0.  27 

0. 13 

0.  32 

100. 10 

A2.  II 

1.096 

.170 

.023 

.007 

.012 

.030 

.084 

.049 

.003 

.001 

.005 

32 

64.  82 

18.  27 

3.48 

0. 56 

0.  85 

2.  89 

5.05 

2.  67 

0.  20 

0.  56 

0.  23 

0.  20 

99.  78 

A2.  II 

1.080 

.179 

.022 

.008 

.021 

.052 

.081 

.028 

.007 

.002 

.003 

33 

67.01 

17.91 

1.30 

n.  d. 

0.  42 

1.86 

5.33 

4.  56 

0.  48 

0.16 

none 

0. 10 

trace 

trace 

0.  60 

99.  86 

A2.  II 

1.117 

.176 

.008 

(.016) 

.011 

.033 

.085 

.049 

.001 

— 

.004 

34 

71.87 

14.  53 

1.  28 

1.02 

0.  48 

1.59 

5.08 

2.  84 

0.  22 

0. 06 

none 

0.41 

0. 10 

trace 

0.  08 

99.  63 

Al.  I 

1.198 

.142 

.008 

.014 

.012 

.029 

.082 

.030 

.005 

.001 

— 

.001 

35 

70.  77 

14.83 

1.35 

1.25 

0.64 

2.  12 

5.  07 

2.  68 

0.  33 

0.  07 

none 

0.  38 

0.13 

trace 

0.  08 

99.  88 

Al.  I 

1.176 

.145 

.009 

.018 

.016 

.038 

.082 

.029 

.005 

.001 

— 

.001 

36 

70. 10 

15.18 

1.78 

1.09 

0.  74 

2.  27 

5. 15 

2.  58 

0. 19 

0. 10 

none 

0.  48 

0. 13 

trace 

0.  08 

99.97 

Al.  I 

1.168 

.149 

.011 

.015 

.019 

.041 

.083 

.027 

.006 

.001 

— 

.001 

37 

68.17 

15.  60 

2.31 

0.  94 

1.02 

2.  76 

5. 15 

2.46 

0. 45 

0.  09 

none 

0.  54 

0. 13 

trace 

0.  06 

99.  71 

Al.  I 

1.136 

.153 

.014 

.013 

.026 

.049 

.083 

.026 

.007 

.001 

— 

— 

38 

69.  36 

16.  23 

0.  88 

1.53 

1.34 

3. 17 

4.  06 

3.02 

0.  45 

100.  04 

A3.  Ill 

1.156 

.159 

.005 

.021 

.034 

.057 

.065 

.032 

39 

68.  72 

15. 15 

1.16 

1.76 

1.28 

3.  30 

4.  26 

2.  78 

0.  74 

0.  31 

0.  09 

0. 11 

0.  07 

99.  76 

Al.  I 

1.145 

.148 

.007 

.025 

.032 

.059 

.069 

.030 

.004 

.001 

.002 

— 

40 

68.  32 

15.  26 

1.66 

1.26 

1.32 

3.26 

4.27 

2.  81 

1.37 

0.  31 

0. 12 

0.04 

0.07 

100.  07 

Al.  I 

1.139 

.150 

.010 

.018 

.033 

.058 

.069 

.030 

.004 

.001 

— 

— 

41 

69.  51 

15.  75 

3.34 

n.  d. 

2.  09 

1.71 

3.  89 

3.34 

0.  56 

trace 

100. 19 

A4.  IV 

1. 159 

.154 

.021 

(.042) 

.052 

.030 

.063 

.036 

— 

42 

68.  10 

15.  50 

3.  20 

none 

0.  10 

3.  02 

4.  20 

3.13 

2.  72 

0. 15 

0.  03 

trace 

0.  06 

100.  21 

Al.  I 

1.135 

.152 

.020 

— 

.003 

.053 

.068 

.033 

.002 

— 

— 

43 

67.89 

17.29 

2.  39 

0.  21 

0.  66 

3.  01 

5.11 

1.69 

1.34 

0.  21 

0. 12 

0.12 

0.  03 

100. 11 

Al.  I 

1. 132 

.169 

.015 

.003 

.017 

.053 

.082 

.018 

.003 

.001 

.002 

PEItSALANE - LASSEN!  >SE. 


177 


ORDER  4.  QUARDOFELIC.  BRIT  ANNARE— Continued. 
SUBRANG  4.  DOSODIC.  LASSENOSE— Continued. 


Inclusive. 

Norm. 

• 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  17.9 
or  21.7 
ab  40.3 
an  14.2 

C  0.8 

hy  1.2 
mt  1. 2 
hml.  6 

Bald  Mountain, 

Rosita,  Colorado. 

L.  G.  Eakins. 

AV.  Cross, 

17  A.R.U.S.  G.  S.,  II, 
p.  324,  1896. 

Dacite. 

SrO 

LioO 

0.04 

trace 

Q  24.0 
or  20.6 
ab  33. 0 
an  13.9 

C  0.9 

hy  4.3 
mt  2. 3 

Chicago  Mountain, 
Tenmile  District, 
Colorado. 

W.  F.  Hille- 
brand. 

AV.  Cross, 

14  A.  R,  U.  S.  G.  S., 
p.  227,  1894. 

Quartz-porphy- 

rite. 

Q  14.8 
or  23.4 
ab  41.9 
an  10.8 

C  1.8 

hy  4.3 
mt  1.6 

• 

Crested  Butte,  West 
Elk  Mountains, 
Colorado. 

L.  G.  Eakins. 

AV.  Cross, 

14  A.  R.  U.  S.  G.  S., 
p.  227,  1894. 

Quartz-porphy- 

rite. 

SrO 

Li»0 

0. 11 
trace 

Q  13.9 
or  16.7 
ab  37. 7 
an  17.0 

di  5.4 
hy  2. 6 
mt  3. 5 
il  0.8 

Hermano  Peak, 

Sierra  El  Late, 
Colorado. 

W.  F.  Ilille- 
brand. 

AAT.  Cross, 

14  A.  R.  U.  S.  G.  S., 
p.  227,  1894. 

Hornblende- 

porphyrite. 

Near  yellow- 
stonose  and 
subrang  4  of 
adamellase.  • 

Q  13.6 
or  27.2 
ab  44.0 
an  8.3 

C  0. 7' 

hy  1.2 
mt  0. 9 
il  0.5 
hm3.0 

San  Mateo  Mountain, 
Mount  Taylor  re¬ 
gion,  New  Mexico. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  148, 
p.  185,  1897. 

Mica-andesite. 

Q  18.0 
or  15.6 
ab  42. 4 
an  14.5 

C  2.0 

hy  2.2 
il  1.1 
hm3.5 

San  Francisco  Moun¬ 
tains,  Arizona. 

T.  M.  Chatard. 

B.  U.  S.  G.  S.  148, 
p.  188,  1897. 

Hypersthene- 

andesite. 

Not  described. 

SrO 

LioO 

0. 13 
none 

Q  13.2 
or  27.2 
ab  44. 5 
an  9. 2 

C  0.9 

hy  3.2 

Fortvmile  Creek,  n. 
Canyon  Creek, 
Alaska. 

H.  N.  Stokes. 

J.  E.  Spun-, 

A.  G.,  XX\r, 
p.  231,  1900. 

Alaskite-por- 

phyry. 

WON 

o  o 

0.04 

trace 

0.03 

Q  27.4 
or  16. 7 
ab  43.0 
an  8.1 

hy  1.2 
mt  1. 4 
il  0.8 

Below  Liao  Rock, 
Crater  Lake, 

Oregon. 

H.  N.  Stokes. 

IL  B.  Patton, 

B.  U.  S.  G.  S.  168, 
p.  222,  1900. 

Rhyolite. 

No  S03,  S, 

Cr,03  or  NiO. 

gGE? 
o  o 

0.05 

0.11 

0.02 

Q  25.1 
or  16.1 
ab  43. 0 
an  9.5 

di  1.3 
hy  1.6 
mt  2. 1 
il  0.8 

Liao  Rock  Flow, 
Crater  Lake, 

Oregon. 

H.  N.  Stokes. 

H.  B.  Patton, 

B.  U.  S.  G.  S.  168, 
p.  222,  1900. 

Rhyolite. 

No  S03,  S, 

Cr., Os  or  NiO. 

COON 

*-S  ^-*1 

o  o 

IS 

0. 04 

0.03 

0. 03 

Q  24.7 
or  15.0 
ab  43. 5 
an  10. 8 

hy  1.0 
mt  2.6 
il  0. 6 

Cleetwood  Cove, 

Crater  Lake, 

Oregon. 

H.  N.  Stokes. 

H.  B.  Patton, 

B.  U.  S.  G.  S.  168, 
p.  222,  1900. 

Rhyolite. 

No  S03,  S, 

Ci\,03  or  NiO. 

Cl 

SrO 

trace 

0. 03 

Q  21.8 
or  14. 6 
ab  43. 5 
an  12.2 

di  1.1 
hy  2.1 
mt  1. 1 
il  1.4 
hm  1. 1 

Near  Wine  Glass 
Grotto,  Crater 

Lake,  Oregon. 

H.  N.  Stokes. 

H.  B.  Patton, 

B.  U.  S.  G.  S.  168, 
p.  222,  1900. 

Rhyolite. 

No  Zr02,  S03, 

S,  Cr203  or  NiO 

Q  24.6 
or  17. 8 
ab  34. 1 
an  15. 8 

C  0.5 

hy  5.5 
mt  1.2 

Four  miles  northwest 
of  Lassen’s  Peak, 
California. 

J.  AV.  Shimer. 

Hague  and  Iddings, 

A.  J.  S.,  XXVI, 
p.  232,  1883. 

Dacite. 

SrO 

Li20 

0.03 

trace 

Q  23.8 
or  16.7 
ab  36. 2 
an  13. 6 

di  2.3 
hv  4.0 
mt  1.6 
il  0. 6 

East  end  of  Chaos, 
Lassen’s  Peak, 
California. 

A\T.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  150, 
p.  218,  1898. 

Dacite. 

Dried  at  100°. 

SrO 

Li«0 

trace 

trace 

Q  23.9 
or  16. 7 
ab36. 2 
an  14. 2 

di  1.6 
hy  3. 1 
mt  2.3 
il  0.6 

West  base  of  Lassen’s 
Peak,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  150, 
p.  218,  1898. 

Dacite. 

Dried  at  100°. 

~ 

Q  25.0 
or  19. 5 
ab  33. 0 
an  8.3 

C  2.7 

hyl0.7 

Southeast  base  of 
Lassen’s  Peak, 
California. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  150, 
p.  218,  1898. 

Dacite. 

SrO 

LioO 

trace 

none 

Q  25.4 
or  18. 3 
ab35. 6 
an  14.2 

hy  0.7 
hm  3.2 
tn  0.4 

Bear  Creek  Falls, 
Shasta  County, 
California. 

R.  B.  Riggs. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  150, 
p.  215,  1898. 

Dacite. 

Dried  at  105°. 

SrO 

0.04 

Q  24.5 
or  10. 0 
ab  43. 0 
an  14. 7 

C  1.6 

hy  1.7 
il  0.4 
hm2.4 

Near  Buntingville, 
Lassen  County, 
California. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  148, 
p.  195,  1897. 

Hornblende- 

andesite. 

Dried  at  105°. 

14128 — No.  14—03 


12 


178 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 

RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

H204- 

h2o- 

o 

o 

TiO, 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

44 

66.  30 

17.  55 

2. 19 

0.  55 

0.  97 

3.12 

5. 15 

2.45 

1.25 

trace 

0. 15 

trace 

99.96 

A2.  II 

1.105 

.173 

.014 

.008 

.024 

.055 

.083 

.026 

— 

.001 

— 

45 

70.  36 

15.  47 

0.  98 

1. 17 

0.  87 

3. 18 

4.  91 

1.71 

1.00 

0.  06 

0.  20 

0. 11 

trace 

0.  06 

100.  08 

Al.  I 

1.173 

.152 

.007 

.017 

.022 

.057 

.079 

.018 

.003 

.001 

— 

— 

46 

O 

o 

CO 

1^- 

16.  38 

none 

0.  99 

0.48 

2.  42 

4.  53 

1.87 

0.  52 

100. 19 

A3.  Ill 

1.216 

.161 

— 

.011 

.012 

.043 

.072 

.020 

47 

71. 19 

13.81 

1.45 

1.68 

0.  74 

2.  87 

4.  24 

1.82 

0.  92 

0.15 

0.  82 

0.  35 

0. 08 

0.  07 

0. 16 

100.  35 

Al.  I 

1.187 

.135 

.009 

.024 

.019 

.051 

.068 

.019 

.004 

.001 

•  .001 

.001 

48 

68.  65 

16.  34 

0.  93 

1.48 

1.29 

3.  07 

4.  85 

1.85 

0.  62 

0.  24 

0.  28 

0. 15 

0.  08 

0.09 

99.  99 

Al.  I 

1.144 

.  161 

.006 

.020 

.032 

.055 

.078 

.020 

.004 

.001 

.001 

.001 

49 

73.18 

13.  66 

0.  21 

2.  24 

0.  93 

2. 10 

3.  70 

2.  72 

0.  57 

0. 10 

0.  17 

0.  25 

0.  09 

0.  07 

0.10 

100. 09 

ai.  i 

1.220 

.131 

.001 

.031 

.023 

.038 

.059 

.029 

.003 

.001 

.001 

.001 

50 

71.88 

15.  57 

1.07 

0.  30 

0.  68 

2. 03 

5.  81 

1.80 

0.  68 

0.  11 

none 

0. 17 

0.  08 

none 

0.  02 

100.  28 

Al.  I 

1.198 

.153 

.007 

.004 

.017 

.036 

.093 

.019 

.002 

.001 

— 

— 

51 

66.  28 

16.  03 

1.80 

1.88 

1. 12 

3.  75 

4.  10 

3.  49 

0.  39 

0. 10 

0. 54 

0.  30 

0.  05 

0.  08 

99.91 

Al.  I 

1.101 

.157 

.011 

.027 

.028 

.067 

.066 

.037 

.007 

.002 

.001 

.001 

52 

70.09 

15. 13 

1.72 

1. 13 

1.22 

2.  61 

3.  61 

2.  75 

0.  78 

trace 

0.  67 

0.  11 

0.  08 

none 

99.  98 

- 

Al.  I 

1.168 

.118 

.004 

.015 

.031 

.047 

.058 

.030 

.008 

.001 

.001 

— 

53 

69.  56 

15.  65 

1.24 

0.91 

0.  82 

2.52 

4.  09 

2. 19 

2.  92 

0. 13 

100.  03 

2. -15 

A3.  Ill 

1. 159 

.153 

.007 

.012 

.021 

.045 

.066 

.023 

.001 

54 

69.  43 

15.  74 

0.  93 

3.  35 

1.35 

2.07 

4.  56 

2.  99 

0. 10 

100. 52 

A3.  Ill 

1.157 

.154 

.006 

.047 

.034 

.038 

.073 

.032 

55 

73.  40 

12.  90 

3.  70 

n.  d. 

0. 14 

2.  35 

3.83 

2.99 

0.  43 

0.  43 

100. 17 

A4.  IV 

1.223 

.126 

.023 

(.046) 

.004 

.042 

.061 

.032 

.005 

56 

68. 12 

12. 13 

n.  d. 

1.03 

trace 

1.63 

5.  34 

1.69 

9.  70 

trace 

99.  64 

Al.  IV 

1.136 

.119 

— 

.014 

.029 

.085 

.018 

57 

74.80 

13.  89 

trace 

none 

0.  05 

2.  59 

5.  45 

2.  74 

0.  77 

100. 29 

A3.  Ill 

1. 247 

.136 

— 

— 

.001 

.047 

.088 

.029 

58 

70.  47 

13.  36 

0.  42 

0.91 

0.  54 

1.04 

4.01 

3.  47 

6. 10 

0.21 

100.  53 

A3.  Ill 

1.175 

.131 

.003 

.012 

.014 

.019 

.064 

.037 

.003 

59 

73.  47 

15.  42 

1.02 

n.  d. 

0.  20 

1.35 

5.  57 

3.  64 

n.  d. 

0.12 

100. 79 

A3.  Ill 

1.225 

.151 

.006 

(.012) 

.005 

.024 

.090 

.038 

.002 

60 

64.98 

19.  50 

2.  51 

0.  30 

0.  50 

3.  70 

6.  09 

2.01 

n.  d. 

99.51 

A3.  Ill 

1.083 

.191 

.015 

.004 

.013 

.066 

.098 

.022 

• 

PERSALANE — LASSENOSE. 


179 


ORDER  4.  QU ARDOFELIC.  BRITANNARE— Continued. 

SUBRANG  4.  DOSODIC.  LASSENOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

0.28 

Q  19.0 
or  14. 5 
ab  43. 5 
an  15. 3 

C  0.9 

hy  2.4 
rut  3.2 

East  Fork  of  Clear 
Creek,  Shasta 
County,  California. 

J.  E.  Whitfield. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  148, 
p.  191,  1897. 

Dacite- por¬ 
phyry. 

SrO 

LLO 

trace 

trace 

Q-  27.1 
or  10.0 
ab41. 4 
an  15. 3 

hy  3.1 
mt  1. 6 
il  0.5 

Near  Enterprise, 

Butte  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S., 
p.  482,  1894. 

Quartz-diorite. 

Q  33.1 
or  11.1 
ab  37. 7 
an  12. 0 

C  2.7 

hy  3.1 

Rocklin,  Placer 
County,  California. 

W.  II.  Melville. 

W.  Lindgren, 

B.  U.  S.  G.  S.  150, 
p.  172,  1898. 

Granite. 

SrO 

trace 

Q  32.2 
or  10.6 
ab  35. 6 
an  13. 3 

di  0.8 
hy  3.0 
mt  2. 1 
il  0.6 

Near  Milton,  Calaveras 
County,  California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S.,II, 
p.  484,  1894. 

Quartz-porphy- 

rite. 

SrO 

LEO 

0.07 

trace 

Q  24.2 
or  11.1 
ab  40. 9 
an  15. 3 

C  0.8 

hy  4. 5 
nit  1. 4 
il  0.6 

Indian  Valley,  Sierra 
County,  California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S.,  I, 
p.  721,  1896. 

Granodiorite. 

Also  in 

J.  G.,  Ill, 
p.  403,  1895. 

SrO 

LEO 

trace 

trace 

Q  34.0 
or  16. 1 
ab  30. 9 
an  10. 6 

C  0.8 

hy  5.9 
mt  0.2 
il  0.5 

Agua  Fria  Creek, 
Mariposa  County, 
California. 

W.  F.  Hille- 
brand. 

II.  W.  Turner, 

17  A.  R.  U.S.  G.  S.,I, 
p.  691,  1896. 

Soda  granite. 

SrO 

LEO 

0. 08 
none 

Q  26.3 
or  10.6 
ab  48. 7 
an  10. 0 

C  0.5 

hy  1.  7 
nit  0. 5 
il  0.3 
hm  0. 8 

Merced  River,  Mari¬ 
posa  County,  Cali¬ 
fornia. 

G.  Steiger. 

H.  W.  Turner, 

17  A.  R.  U.S.  G.S.,I, 
p.  721,  1896. 

Soda-granite- 

porphyry. 

SrO 

LEO 

■  trace 
trace 

Q  19.6 
or  20. 6 
ab  35. 6 
an  15. 0 

di  3.0 
hy  2.7 
mt  3.5 

Lake  Tenaya,  Mari¬ 
posa  County,  Cali¬ 
fornia. 

W.  F.  Hille- 
brand. 

II.  W.  Turner, 

14  A.  R,  U.  S.  G.  8,,  II, 
p.  482,  1894. 

Granodiorite. 

Zr()2 

Cl 

FeS., 

CoO" 

Cu 

Pb 

trace 

0.02 

0.02 

none 

0.04 

none 

Q  30.7 
or  16. 7 
ab  30. 4 
an  13. 1 

C  1.3 

hy  3.2 
mt  0.9 
il  1.2 

Mazaruni  district, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contrib. 

Granitite-gneiss. 

Dried  at  100°. 

Q  30. 5 
or  12. 8 
ab  34. 6 
ail  12.  5 
'  C  2.0 

hy  2.8 
mt  1. 6 

Guaitara  Slope,  Loma 
de  Ales,  Colombia. 

R.  Kuch. 

R.  Kuch, 

N.  J.,  1886,  I, 
p.  48. 

Biotite-horn- 

blende-dacite. 

Q  22.5 
or  17.8 
ab  38. 3 
an  10. 6 

C  1.1 

hy  9.0 
mt  1. 4 

Juncal  Valley,  Ar¬ 
gentina. 

H.  Schlapp. 

A.  Stelzner, 

Btr.  G.  Arg.  Rep.,  I, 
p.  208,  1885. 

“Andengranit.” 

Q  32.7 
or  17. 8 
ab  32. 0 
an  9.2 

di  2.2 
hy  4.8 
il  0.8 

Hlidharfjall,  n. 
Myvatn,  Iceland. 

H.  Biickstrom. 

H.  Biickstrom, 

G.  F.  F.,  XIII, 
p.  663,  1890. 

Obsidian. 

Q  27.5 
or  10.0 
ab  44.  5 
an  7. 2 

di  3.4 

Berufjord,  Iceland. 

C.  W.  Schmidt. 

C.  W.  Schmidt, 

Z.  D.G.G.,  XXXVII, 
p.  778,  1885. 

Pitchstone. 

Much  H,0. 

Q  28.7 
or  16. 1 
ab  46. 1 
an  5.2 

wo  3.3 

Stanner,  n.  Old  Rad¬ 
nor,  Wales. 

G.  A.  .T.  Cole. 

G.  A.  J.  Cole, 

G.  M.,  XXIII, 
p.  223,  1886. 

Quartz-felsite. 

!  Q  30.5 
or  20. 6 
ab  33. 5 
an  5. 3 

C  1.1 

hy  2. 6 
mt  0. 7 

Puerto  de  Genoves, 
Cabo  de  Gata, 

Spain. 

A.  Osann. 

A.  Osann, 

Z.  D.G.  G.,  XLIII, 
p.  689,  1891. 

Liparite. 

Pumice. 

Q  23.5 
or  21. 1 
ab  47. 2 
an  6. 7 

hy  2.1 

Birkrem,  Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb. 

1896,  No.  5,  p.  96. 

Hypersthene- 

granite. 

, 

Much  H.O. 

Q  13.1 
or  12.2 
ab51.  4 
an  18. 3 

1  C  0.5 

;hy  1.3 
mt  0. 9 
hm  1. 8 

Presten,  Lofoten 
Islands,  Norway. 

T.  Matthiessen. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb. 

1898,  No.  7,  p.  28. 

Oligoclase 

rock 

180 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 
RANG  2.  DOMALKALIC.  TOSCANASE— Continued. 


No. 

Si02 

ALA 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

CO, 

Ti02 

P2()5 

MnO 

BaO 

Sum 

Sp.  gr. 

61 

68. 19 

16.  88 

1.63 

n.  d. 

1.07 

2. 19 

5.34 

3.03 

1.  37 

0.  14 

99.  84 

A3.  Ill 

1.137 

.16.6 

.010 

(.020) 

.027 

.039 

.085 

.032 

.002 

62 

66.  46 

17.  72 

2. 13 

n.  d. 

0.  95 

3.  44 

4.  96 

2.  86 

1.50 

0. 13 

100. 15 

A3.  Ill 

1.108 

.173 

.013 

(.026) 

.024 

.061 

.080 

.030 

.002 

63 

70.  28 

14.  93 

1.42 

1.34 

0.  76 

3.  29 

4.  57 

2.62 

1.44 

. 

0.06 

100.  71 

A3.  Ill 

1.171 

.146 

.009 

.018 

.019 

.059 

.074 

.027 

.001 

64 

60.  45 

15.  93 

2.57 

2.  90 

1.  62 

2.  77 

4.29 

2.  77 

3.  28 

1.  77 

1.17 

0.  21 

99.  86 

2.  643 

A2.  II 

1.008 

.156 

.016 

.040 

.041 

.050 

.069 

.030 

.014 

.001 

65 

71.27 

13.91 

2.  42 

0.  37 

0.  77 

3.  03 

5.45 

1.47 

0.  78 

0.51 

99.  98 

2.  529 

A3.  Ill 

1.188 

.136 

.015 

.005 

.019 

.053 

.088 

.016 

.007 

66 

69.  73 

15.97 

1.27 

1.23 

0.  68 

3.  28 

5.  30 

1.  76 

0.  53 

none 

0.21 

99.  96 

A3.  Ill 

1.162 

.156 

.008 

.017 

.017 

.059 

.085 

.019 

.001 

67 

68.  95 

16. 13 

2.  53 

0. 99 

0.  42 

1.29 

5.  36 

3.  28 

1.  29 

0.30 

100.  54 

2.  659 

A3.  Ill 

1.149 

.158 

.015 

.014 

.011 

.023 

.086 

.035 

.004 

68 

68. 11 

15.  80 

1.97 

1.87 

0.  96 

2.  43 

4.41 

2.  80 

0.  54 

0. 16 

0.  07 

0.62 

99.87 

2.  665 

A2.  II 

1. 135 

.155 

.013 

.027 

.024 

.043 

.071 

.030 

.001 

.004 

15° 

69 

71.  74 

14. 12 

1.  75 

0.  59 

1.34 

2.  32 

3.  65 

• 

2.85 

1.45 

99.  81 

A3.  Ill 

1.196 

.138 

.011 

.008 

.034 

.041 

.059 

.031 

70 

69.  90 

14.  73 

n.  d. 

2.90 

0.  72 

1.91 

4.80 

3.01 

2. 10 

99.  57 

A4.  IV 

1. 165 

.144 

— 

.040 

.018 

.034 

.069 

.032 

71 

72. 19 

12.56 

3.  65 

n.  d. 

2.  52 

4.  41 

3.35 

0.  40 

0.  08 

100. 01 

A4.  IV 

1.203 

.123 

.023 

(.046) 

.045 

.071 

:036 

.004 

72 

75.  02 

12.  86 

1.50 

n.  d. 

0.  95 

1.05 

5.  01 

2.28 

0.  90 

99.  57 

A3.  Ill 

1.250 

.126 

.009 

(.018) 

.024 

.019 

.080 

.024 

73 

69.  71 

16.  51 

1.50 

n.  d. 

0.34 

1.  89 

4. 56 

1.35 

3.  85 

99.  71 

A3.  Ill 

1. 162 

.162 

.009 

(.018) 

.008 

.034 

.073 

.014 

74 

65.97 

17.50 

2.17 

n.  d. 

1.20 

2.  69 

4.41 

1.  76 

4.19 

99.  89 

A4.  IV 

1.100 

.172 

.014 

(.028) 

.030 

.048 

.071 

.018 

75 

67.  80 

16.  92 

1.05 

1.94 

1.31 

3.25 

4.  36 

3.  35 

0.  33 

0.35 

100.  66 

*  m 

A3.  Ill 

1.130 

.166 

.006 

.027 

.033 

.058 

.070 

.036 

.005 

% 

76 

76. 19 

13.  42 

0.41 

n.  d. 

trace 

1.35 

4.  57 

2.  63 

1.15 

99.  72 

A3.  Ill 

1.270 

.131 

.003 

(.006) 

— 

.024 

.074 

.028 

77 

69.44 

15.  21 

1.74 

0.  56 

0.  93 

1.99 

5.11 

4.  53 

0.  77 

100.  28 

A3.  Ill 

1.157 

.149 

.011 

.008 

.023 

.036 

.082 

.048 

PERSALANE - LA3SEN0SE 


181 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 
SUBRANG  4.  DOSODIC.  LASSENOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  18.6 
or  17.8 
nb  44. 5 
an  10. 8 

C  1.0 

hy  5.4 

Various  localities  in 
Smaland,  Sweden. 

II.  Santesson. 

O.  Nordenskjold, 

B. G. Inst.  tin.  Ups., I, 
p.  177,  1894. 

Quartz-syenite- 

porphyry. 

Average  of  sev¬ 
eral  speci¬ 
mens. 

Q  16.6 
or  16.8 
all  41.  9 
an  17. 0 

C  0. 2 

hy  5.9 

Sjogelo  region,  Sma- 
land,  Sweden. 

II.  Santesson. 

O.  Nordenskjold, 
B.G.Inst.Un.  Ups., I, 
p. 194, 1894. 

Eorhvolite. 

Average  of  sev¬ 
eral  speci¬ 
mens. 

FeSo 

1.34 

Q  26.0 
or  15.0 
ab  38. 8 
an  12. 5 

di  3. 2 
hy  1.6 
mt  2.1 
pr  1.3 

Lammersdorf,  near 
Aachen, 

Rh.  Prussia. 

L.  Schmidt. 

Dannenberg  and  Holz- 
apfel,  Jb.  Pr.  G. 

L-A.,  XVIII, 
p.  13,  1898. 

Granite. 

S03 

Org 

0. 10 

0. 03 

Q  15.8 
or  16. 7 
ab  36. 2 
an  13. 9 

C  0.7 

hy  6.4 
mt  3.  7 
il  2.2 

Munster  am  Stein, 

Rh.  Prussia. 

. 

Gremse. 

K.  A.  Lossen, 

Z.  D.  G.  G.,  XLIII, 
p.  537,  1891. 

• 

Quartz-por¬ 

phyry. 

S03  for  S. 

Not  fresh. 

Q  27.6 
or  8.9 
ab  46. 1 
an  8.9 

di  4. 4 
mt  1.2 
hml.  6 

Hirtenberg,  Hesse. 

F.  W.  Schmidt. 

C.  Chelius, 

Erl.  G.  Kt.  Hessen, 

I,  Bl.  Rossdorf, 
p.  35,  1886. 

Granite. 

' 

Q  24.1 
or  10. 6 
ab44.5 
an  14. 5 

di  1.5 
hy  2.2 
mt  1.9 

Melibocus,  Oden- 
wald,  Hesse. 

R.  Marzahn. 

Chelius  and  Klemm, 

Erl.  G.  Kt.  Hesse,  X, 
p.  42,  1896. 

Granite. 

Q  22.0 
or  19. 5 
ab  45. 1 
an  6.4 

C  1.4 

hy  1.1 
mt  2.6 
il  0.5 
hmO.  6 

Miihlenthal,  near 
Magdeburg, 

Saxony. 

Bodliinder. 

F.  Ivlockmann, 

Jb.  Pr.  G.  L-A.,  XI, 
p.  176,  1892. 

Quartz-por¬ 

phyry. 

S03 

0. 13 

Q  25.9 
or  16. 7 
ab  37. 2 
an  8.3 

C  2.4 

hy  4. 3 
mt  3.0 
ap  1.4 

Miihlberg,  Oden- 
wald,  Hesse. 

Not  stated. 

C.  Chelius, 
cf.  N.  J.  1884,  II, 
p.  419. 

Granite. 

Q  32.4 
or  17.2 
ab  30. 9 
an  11. 4 

C  0.7 

hy  3.3 
mt  1.9 
hmO.  5 

Barndorf,  Riesenge- 
birge,  Silesia. 

VC  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  156,  1899. 

Granitite. 

Q  26.0 
or  17. 8 
ab36. 2 
an  9. 5 

C  0.9 

hy  7.1 

Vincenzo,  Campiglia 
Marittima,  Tus¬ 
cany. 

C.  Dalmer. 

C.  Dalmer, 

N.  J.,  1887,  II, 
p.  213. 

Quartz-tra¬ 

chyte. 

Q  26.0 
or  20. 0 
ab  37.2 
gn  4. 4 

di  7. 0 
hy  4.7 

Basiluzzo  Island, 
.Eolian  Islands. 

F.  Glaser. 

A.  Bergeat, 

Abh.  Munch.  Ak., 
XX,  p.  61,  1899. 

Obsidian. 

* 

Q  32.8 
or  13. 3 
ab  41.9 
an  5. 3 

C  0.3 

hy  4.8 

Mount  Kastel, 

Crimea,  Russia. 

R.  Prendel. 

R.  Prendel,  cf.  N.  J., 
1887,  II,  p.  95. 

Liparite. 

Q  32.8 
or  7. 8 
ab  88. 3 
an  9. 5 

C  4.2 

hy  3.2 

n.  Alouchta,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  7  Cong., 
G.  Int.,  XXXIII, 
p.  27,  1897. 

Quartz-porphy- 

rite. 

Q  24.7 
or  10. 0 
ab  37. 2 
an  13. 3 

C  3.6 

hy  6.7 

Charkha,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  7  Cong., 
G.  Int.,  XXXIII, 
p.  27,  1897. 

lveratophyr. 

- 

Q  19.4 
or  20. 0 
ab  36.  7 
an  16. 1 

hy  6.0 
mt  1.4 

Mount  Elbruz,  Cau¬ 
casus. 

A.  Dannenberg. 

A.  Dannenberg, 

T.  M.  P.  M.,  XIX, 
p.  233,  1900. 

Dacite. 

Segregation  in 
other  dacite. 

Q  35.8 
or  15. 6 
ab  3N.  s 
an  7.8 

C  0.5 

hy  0.9 

Unga  Islhnd,  Kam¬ 
chatka,  Siberia. 

P.  Wenjukoff. 

P.  Wenjukoff,  cf.  N.  J., 
1891,  I,  p.  281. 

Liparite. 

Q  17.9 
or  26. 7 
ab43.0 
an  5. 3 

di  3.7 
hy  0. 6 
in  t  1 . 9 
hm  0. 2 

Porobbo,  Toba  Lake, 
Sumatra. 

W.  Herz. 

L.  Milch, 

.  Z.  D.  G.  G.,  LI, 
p.  69,  1899. 

Quartz-tra- 

chvte-ande- 

site. 

182 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 


RANG  2.  DOM ALKALIC.  TOSCANASE — Continued. 


No. 

Si02 

AlA 

Fe2G3 

FeO 

MgO 

CaO 

Na20 

Iv20 

h2o+ 

H20— 

o 

o 

to 

Ti02  P205 

MnO 

BaO 

Sum 

Sp.  gr. 

78 

71.29 

15.  70 

1.50 

0.  30 

0.89 

3.41 

4.81 

2.  35 

0.  07 

trace 

100.  32 

A3. 

Ill 

1.188 

.154 

.009 

.004 

.022 

0. 55 

.077 

.025 

— 

79 

72.  70 

13. 85 

2.  50 

n.  d. 

0.  94 

3.34 

4.  60 

2.  46 

n.  d. 

trace 

trace 

100.  39 

A4. 

IV 

1.212 

.136 

.016 

1 

(.032) 

.024 

.059 

.074 

.026 

•  ,  - 

RANG  2.  DOM  ALKALIC.  TOSCANASE. 


1 

74.  21 

14.  47 

0.35 

0.50 

0.  28 

1.  71 

7.  62 

0.10  0.23 

0. 15 

0.  30 

0.07 

none 

none 

99.  99 

Al.  I 

1.236 

.142 

.002 

.007 

.007 

.030 

.122 

.001 

.004 

.001 

— 

— 

2 

67.88 

17.  21 

2.00 

1.62 

1.52 

3. 08 

5.  71 

0.  26  0.  45 

• 

none 

0. 20 

0. 10 

0. 09 

100. 12 

A2.  II 

1.131 

.  169 

.013 

.022 

.038 

.  055 

.092 

.003 

/ 

.002 

.001 

.001 

3 

67.  62 

17.03 

1.  30 

1.  71 

1.51 

3. 11 

5.  86 

0.  63  0.  50 

0. 10 

0.34 

0.01 

trace 

99.  72 

2.  684 

A2.  II 

1.127 

.167 

.008 

.024 

.038 

.  055 

.094 

.007  i 

.004 

— 

— 

RANG  3.  ALKALICALCIC.  COLORADASE. 


1 

64.  34 

17.  87 

2.  55 

n.  d. 

trace 

3.  06 

1.63 

4.52 

6. 19 

100. 14 

A4.  IV 

1.072 

.175 

.016 

(.032) 

— 

.054 

.026 

.048 

RANG  3.  ALKALICALCIC.  COLORADASE. 


1 

64.  05 

15.  38 

2.20 

2.  74 

2.  08 

4.  30 

2.  74 

4.  (.0 

0.  83 

0.27 

0.  35 

0.  60 

0.21 

0. 11 

0.  08 

100.  06 

Al.  I 

1.068 

.150 

• 

.014 

.038 

.052 

.077 

. 

.044 

.042 

.007 

.002 

.002 

.001 

2 

63.  88 

15.  84 

2. 11 

2.59 

2. 13 

3.97 

2.  81 

4.  23 

0.  66 

0.  22 

0.  65 

0.21 

0. 07 

0.  09 

99.  82 

Al.  I 

1.065 

.  155 

.013 

.036 

.053 

.071 

.  045 

.  045 

.008 

.002 

.001 

.001 

3 

62.  53 

19.  01 

1.96 

1.44 

1.  29 

5.17 

3.  45 

3.30 

0.  45 

0.21 

none 

0.  65 

0. 17 

0.  03 

0. 13 

99.  83 

Al.  I 

1.042 

.186 

.013 

.020 

.032 

.093 

.  056 

.  035 

.  008 

.002 

.001 

4 

65.  36 

15.  48 

3.09 

1.  21 

1.53 

4. 14 

3.  58 

3.41 

0.  70 

0.  82 

0.  52 

0.  25 

0. 19 

0.  08 

100.  36 

Al.  I 

1.089 

.152 

.020 

.017 

.038 

.074 

.  058 

.036 

.006 

.002 

.002 

.001 

5 

63.  91 

17.  07 

4.  39 

1.51 

0.  81 

4.47 

3.48 

3.  74 

0.  33 

0.  21 

99.  92 

2.  751 

A3.  Ill 

1.065 

.167 

.027 

.021 

.020 

.080 

.056 

.039 

.001 

14° 

6 

65.  68 

15.  87 

1.  78 

1.25 

1.  79 

3.  50 

3.  20 

3.37 

3.  10 

0. 93 

0.  23 

100.  75 

A2.  II 

1.095 

.155 

.011 

.018 

.045 

.062 

.051 

.036 

.012 

.002 

7 

65.  13 

15.  73 

2.  24 

1.86 

1.49 

3.  62 

2.93 

3.  96 

1.91 

0.  52 

0.  58 

0.  23 

trace 

100. 27 

A2.  II 

1.086 

.154 

.014 

.026 

.037 

.064 

.047 

.042 

.007 

.002 

— 

8 

67.  45 

15.51 

1.  76 

2.  21 

1.  10 

3.  60 

3.47 

3.  66 

0.63 

0. 14 

0.  58 

0. 12 

100.  25 

A2.  II 

1. 124 

. 

.  152 

.011 

.031 

.028 

.064 

.056 

.039 

.007 

.001 

PERSALANE - AMIATOSE. 


183 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 
SUBRANG  4.  DOSODIC.  LASSENOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  26. 8  di  0.7 

or  13.9  hy  1.9 

nb  40. 3  nit  0. 9 

an  14. 5  hm  0. 8 

Lyttleton,  Banks  Pen¬ 
insula,  New  Zea¬ 
land. 

P.  Marshall. 

P.  Marshall, 

Tr.N.Z.  Inst.,  XXVI, 
p.  379,  1894. 

Tridymite- 

trachyte. 

Mean  of  3. 

Q  27.7  di  5.5 

or  14. 5  hy  4. 0 

ab  38. 8 
an  10. 0 

Lyttleton,  Banks  Pen¬ 
insula,  New  Zea¬ 
land. 

P.  Marshall. 

P.  Marshall, 

Tr.  N.  Z.  Inst.,  XXVI, 
p.  379,  1894. 

Tridymite- 

trachyte. 

Mean  of  2. 

SUBRANG  5.  PERSODIC.  MARIPOSOSE. 


SrO  trace 

LioO  trace 

Q  26.5 
or  0. 6 
ab  63. 9 
an  5. 3 

di  1.9 
wo  0.4 
mt  0. 5 
il  0. 6 

Near  Mariposa,  Mari¬ 
posa  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S.,I, 
p.  721,  1896. 

Aplite. 

Also  in  J.  G., 
Ill,  p.  403, 
1895. 

• 

Q  24.2 
or  1. 7 
ab  48. 2 
an  15. 3 

C  1.9 

hy  5. 0 
mt  3. 0 

Towakaima  Falls, 
Barama  River, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

R.  G.  N.  W.  Distr.,  II, 
1898,  p.  10. 

Granite. 

Dried  at  100°. 

Q  21.7 
or  3.9 
ab  49. 3 
an  15. 3 

C  1.1 

hy  5.4 
mt  1.9 
il  0. 6 

Essequibo,  etc. ,  rivers, 
British  Guiana. 

Assistant  of  J.  B. 
Harrison. 

J.  B.  Harrison, 

R.  G.  Ess.  rivers, 

1900,  p.  52. 

Granophyre. 

Average  sample. 
Dried  at  100°. 
Alkalies? 

SUBRANG  2.  DOPOTASSIC. 


Q  29.3 
or  26. 7 
ab  13. 6 
an  15. 0 

C  4.8 

hy  4.2 

Scogliatelle,  Ponza 
Island,  Italy. 

G.  Aichino. 

V.  Sabatini, 

B.  C.  G.  I.,  XXIV, 
p. 252, 1893. 

Retinite. 

SUBRANG 

3.  SODIPO  r  ASSIC 

AMIATOSE. 

s 

SrO 

Cu 

0. 07 

0.04 

0.01 

Q  20.0 
or  23.4 
ab  23. 1 
an  20. 6 

di  0.8 
hy  5. 2 
mt  3.2 
il  1.2 

Gagnon  Mine,  Butte, 
Montana. 

H.  N.  Stokes. 

W.  II .  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Granite. 

Complete  in  B. 
U.  S.G.  S.,168, 
p.  117, 1900. 

so3 

Cl 

SrO 

0.34 

trace 

0.02 

Q  19.3 
or  25. 0 
ab  23. 6 
an  18. 1 

di  1.3 
hv  6. 7 
nit  4.2 

Walkerville  Station, 
Butte,  Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Granite. 

Near  harzose. 
Complete  in  B. 
U.  S.G.S.,168, 
p.  116, 1900. 

S03 

SrO 

Li20 

none 

0.04 

trace 

Q  16.7 
or  19. 5 
ab  29. 3 
an  25. 9 

C  0.2 

hy  3.2 
mt  3. 0 
il  1.1 

Hiawatha  Creek, 

Butte  District,  Mon¬ 
tana. 

H.  N.  Stokes. 

Weed  and  Tower, 

B.  U.  S.  G.  S.,  168, 
p.  119,  1900. 

Andesite-por¬ 

phyry. 

Q,  20.6 
or  20. 0 
ali  30.4 
an  19. 2 

di  1.1 
hy  3.3 
mt  2.  6 
il  0.9 
hml.4 

Mount  Carbon,  West 
Elk  Mountains,  Col¬ 
orado. 

T.  M.  Chatard. 

W.  Cross, 

14  A.  R.  U.  S.  G.  S., 
p.  227,  1894. 

Quartz-po  r  p  h  y  - 
rite. 

Q,  19.4 
or  21.7 
ab  29. 3 
an  20. 0 

di  1.8 
hy  1.2 
mt  4. 9 
hml.O 

Sultan  Mountain,  San 
Juan  County,  Col¬ 
orado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  180,  1897. 

Augite-diorite. 

Dried  at  100°. 

Q.  24.2 
or  20. 0 
ab  26. 7 
an  17. 2 

C  0.6 

hy  4.5 
mt  1.4 
il  1.8 
hm  0. 8 

Waller  Defeat  shaft, 
Washoe,  Nevada. 

G.  E.  Moore. 

G.  F.  Becker, 

M.  II.  S.  G.  S.,  Ill, 

p.  282,  1882. 

Mica-andesite. 

Also  in  Hague 
and  Iddings, 
B.  U.  S.  G.  S., 
17,  p.  33, 1885. 

NiO 

0.07 

Q  22.9 
or  23. 4 
ab  24. 6 
an  17. 8 

C  0.1 

hy  4.4 
mt  3.2 
il  1.1 

S.  of  Carbon  Ridge, 
Eureka  District, 
Nevada. 

W.  H.  Melville. 

Hague  and  Iddings, 

M.  U.  S.  G.  S.,  XX, 
p.  264,  1892. 

Andesitic  per¬ 
lite. 

Q  23.5 
or  21. 7 
ab  29. 3 
j  an  15. 8 

di  1. 6 
hy  3.7 
mt  2.6 
il  1.1 

Silver  Lake  House, 
Pyramid  Peak,  El¬ 
dorado  Co.,  Ca}. 

G.  Steiger. 

W.  Lindgren, 

A.  J.  S.,  Ill, 
p.  306,  1897. 

Granodiorite. 

184 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  PERSALANE — Continued. 

RANG  3.  ALKALICALCIC.  COLORADASE— Continued. 


No. 

Si02 

A1A 

FeA 

FeO 

MgO 

C'aO 

Na20 

K,0 

h2o+ 

H20- 

co2 

Ti0.2 

PA 

MnO 

BaO 

Sum 

Sp.gr. 

9 

70.  75 

;  15.13 

0.  98 

1.43 

0.  73 

3.09 

3.  05 

3.62 

0.51 

0. 10 

none 

0.42 

0. 10 

trace 

0. 12 

100. 13 

Al.  I. 

1.179 

.148 

.006 

.019 

.017 

.  055 

.049 

.038 

.005 

.001 

— 

.001 

10 

64.  48 

16.  50 

3.  47 

n.  d. 

1.  60 

4.42 

3. 13 

3.  72 

2.  94 

100.  26 

A4.  IV 

1. 075 

.162 

.  022 

(.044) 

.040 

.078 

.050 

.039 

11 

68.  26 

14.  35 

1.30 

2.34 

1. 13 

2.  85 

2.  45 

3.64 

3.17 

0.  70 

100. 19 

A3.  Ill 

1.138 

.141 

.008 

.032 

.018 

.051 

.040 

.038 

.010 

12 

65.  69 

16.41 

0.  73 

2.  74 

1.42 

3.  36 

2.  39 

5.24 

1.20 

0.44 

trace 

trace 

100.  83 

2.  581 

Al.  I 

1.095 

.161 

.005 

.038 

.036 

.  060 

.  039 

.056 

.006 

— 

— 

15° 

13 

65.  53 

16.  89 

1.00 

2.38 

1. 17 

3.24 

2.71 

4.  59 

1.98 

0.46 

trace 

trace 

100. 85 

2.  540 

Al.  I 

1. 092 

.  106 

.006 

.033 

.029 

.  058 

.044 

.049 

.006 

— 

— 

15° 

14 

65.  79 

16.  58 

5. 18 

11.  d. 

0. 98 

3.  05 

2.  34 

4.  63 

1.83 

100.  37 

A4.  IV 

1.097 

.162 

.  032. 

(.064) 

.025 

.054 

.037 

.049 

15  . 

63.  71 

17.  28 

2.41 

1.  16 

2.  93 

5. 16 

2.  60 

4.  22 

0.  96 

trace 

100.  43 

2.  707 

A3.  Ill 

1.062 

.  169 

.015 

.016 

.073 

.  092 

.042 

.045 

— 

15° 

16 

63. 17 

17. 15 

2.84 

1.  31 

2. 17 

4. 17 

3.  08 

4.  19 

2.  51 

100.  59 

2.  525 

A3.  Ill 

1.053 

.168 

.018 

.018 

.054 

.074 

.050 

.045 

17° 

17 

61.  93 

18.47 

1.93 

2.  23 

2.66 

4.31 

2.  92 

3.  92 

2.  28 

100. 65 

2.  601 

A3.  Ill 

1.031 

.181 

.012 

.031 

.067 

.077 

.047 

.042 

18° 

18 

67.  85 

18.  39 

1.27 

n.  d. 

0.  60 

4.  82 

2.  38 

3.42 

2.  23 

100.  96 

B3.  IV 

1.131 

.180 

.008 

(.016) 

.015 

.086 

.039 

.036 

19 

67.  62 

15.  93 

4.37 

n.  d. 

1.  33 

4.44 

3. 18 

2.87 

0.  99 

100.  73 

A4.  IV 

1.127 

.156 

.027 

(.054) 

.033 

.079 

.051 

.031 

20 

66.  55 

15.  61 

2.42 

n.  d. 

0.51 

3.  49 

2.  89 

4.  29 

4.81 

100.  57 

A4.  IV 

1.109 

.  153 

.015 

(.030) 

0.13 

.062 

.047 

.046 

21 

66.  27 

18.  66 

1.  99 

n.  d. 

0.  66 

4.  89 

3.  65 

3.  39 

0.  70 

100.21 

A3.  Ill 

1. 105 

.183 

.013 

(.026) 

.017 

.  0S7 

.059 

.036 

RANG  3.  ALKALICALCIC.  COLORADASE. 


1 

67.  74 

16. 13 

1.50 

1.96 

1.36 

4.  41 

4.92 

1.30 

0.  86 

0. 10 

trace 

100. 28 

A3.  Ill 

1.129 

.158  ! 

.009 

.028 

.034 

.078 

.079 

.014 

— 

2 

67.  33 

16.20 

1.40 

2.  73 

1.31 

2.81 

3. 15 

2. 14 

1.84 

O 

00 

0. 16 

trace 

0.05 

99.  92 

A2.  II 

1.122 

.159 

.009 

.008 

.033 

.050 

.051 

.023 

.010 

.001 

— 

— 

3 

62.  91 

19.  13 

0. 98 

3.  20 

1.69 

4.  28 

3.  94 

3.  38 

0.  63 

100. 14 

9 

A3.  Ill 

1.049 

.187 

1 

] 

.  006 

.044 

.042 

.077 

.063 

.035 

PERSALANE - YELLOWST(  )NOSE. 


185 


ORDER  4.  QUARDOFELIC.  BR1TANNARE — Continued. 


SUBRANG  3.  SODIPOTASIC.  AM  I ATOSE— Continued. 


I  nclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

FoSa 

NiO 

SrO 

LiaO 

0.06 

none 

0.04 

trace 

Q  31.3 
or  21. 1 
ab  25. 7 
an  15. 3 

C  0.6 

hy  2.7 
mt  1.4 
il  0.8 

North  Fork  of  Tuo¬ 
lumne  River,  Ama¬ 
dor  County,  Cal. 

W.  F.  Hille- 
brand. 

II.  W.  Turner, 

17  A.  R.  U.  S.  G.  S.,I, 
p.  702,  1896. 

Biotite-granite. 

' 

Q.  18.4 
or  21.  7 
nb  26. 2 
an  20. 3 

dl  1.2 
hy  9.2 

N.  S.  de  Guadelupe, 
n.  Mexico,  Mexico. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  458,  1887. 

Andesite. 

Q  31.6 
or  21. 1 
ab  21.0 
anl4.2 

C  1.2 

hy  5.3 
mt  1. 9 

Skrutten,  Helsing- 
land,  Sweden. 

H.  Santesson. 

F.  Svenonius, 

G.  F.  F.,  X, 
p.  273,  1888. 

Andesite  brec¬ 
cia. 

X 

SO;, 

Cl 

Li,0 

0. 77 

0.17 

0.03 

0.24 

Q  20.5 
or  31.1 
ab  20. 4 
an  16. 7 

C  0.6  • 

hy  7.2 
mt  1.2 
il  0.9 

Nocchetto,  Mount 
Amiata,  Tuscany. 

J.  F.  Williams. 

J.  F.  Williams, 

N.  J.  B.  B.,  V, 
p.  408,  1887. 

Trachyte. 

S03  for  S.? 

X 

so:i 

Cl 

Li.,0 

0.  01 

0. 20 

0.09 

trace 

Q  22.0 
or  27.- 2 
ab  23. 1 
an  16. 1 

C  1.5 

hy  5.9 
mt  1.4 
il  0.9 

Casa  la  Fornacina, 
Mount  Amiata, 
Tuscany. 

J.  F.  Williams. 

J.  F.  Williams, 

N.  J.  B.  B.,  V, 
p.  410,  1887. 

Trachyte. 

S03  for  S.? 

Q  23.0 
or  27. 2 
ab  19.4 
an  15. 1 

C  2. 2 

hyl0.9 

Mount  Amiata,  Tus¬ 
cany. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chem.  Ital., 
XVIII,  1888. 

Trachyte. 

Q  17.6 
or  25. 0 
ab  22. 0 
an  22. 2 

di  2.6 
hy  6.2 
mt  3.  5 

Near  Adaini  Mine, 
Laurion,  Greece. 

R.  Lepsius. 

R.  Lepsius, 

G.  von  Attika,  Berlin, 
1893,  p.  90. 

Granite. 

Near  hartzose. 

/ 

| 

Q  17.0 
or  25. 0 
nb  26. 2 
an  20. 3 

hy  5.4 
mt  4.2 

SE.  slope  of  Acropo¬ 
lis,  Pergamon,  Asia 
Minor. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  Ill, 
p.  49,  1897. 

Biotite-dacite. 

Dried  at  110°. 

Q  15.4 
or  23. 4 
ab  24. 6 
an  21. 4 

C  1.5 

hy  9.3 
mt  2.8 

Kara  Tash,  Smyrna, 
Asia  Minor. 

H.  S.  Washing¬ 
ton. 

H.  S.  "Washington, 

A.  J.  S.,  Ill, 
p.  45,  1897. 

Augite-andesite. 

Dried  at  110°. 

Q  28.7 
or  20.0 
ab  20. 4 
an  23. 9 

C  1.9 

hy  3. 7 

Cap  Blanc,  n..Mener- 
ville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Rit¬ 
ter,  Mem.  Soc.  Ph. 
Genev.,  XXXIII, 
p.  59,  1900. 

Hypersthene- 

dacite. 

Q  23.7 
or  17.2 
ab  26. 7 
an  20. 6 

di  1.3 
hy  9.7 

Dra  zeg  Etter,  n. 
Menerville,  Algeria. 

( 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Rit¬ 
ter,  Mem.  Soc.  Ph. 
Genev.,  XXXIII, 
p.  129,  1900. 

Dacite. 

Q.  23.2 
or  25.6 
ab24.6 
an  16. 7 

di  0.4 
hy  5.0 

Cap  Blanc,  n.  Mener¬ 
ville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Rit¬ 
ter,  Mem.  Soc.  Ph. 

< ienev. ,  XXXIII, 
p.  59,  1900. 

Dacite. 

Not  fresh. 

Q  19.1 
or  20. 0 
ab  30. 9 
an  24. 2 

hv  5.2 

Cap  Blanc,  n.  Mener¬ 
ville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Rit¬ 
ter,  Mem.  Soc.  Ph. 
Genev.,  XXXIII, 
p.  59,  1900. 

Dacite. 

SUBRANG 

4.  DOSODIC.  YELLOWSTONOSE. 

Q.  21.9 
or  7.8 
ab  41. 4 
an  20.  9 

di  0.8 
hy  5.6 
mt  2.1 

Opimika  Narrows, 
Lake  Temiscaming, 
Quebec. 

F.  G.  Wait. 

G.  C.  Hoffmann,  ’ 

A.  R.  G.S.  Can.,  IX, 
p.  19  R.,  1898. 

Granitite. 

0 

Q  31.6 
or  12.8 
ab  26.  7 
an  13. 9 

C  3.6 

hy  5.8 
mt  2. 1 
il  1. 5 

Near  East  Clarendon, 
Vermont. 

LI.  N.  Stokes. 

B.  U.  S.  G.  S.,  148, 
p.  71,  1897. 

Granite. 

Not  described. 

Q  13.6 
or  19.5 
ab  33. 0 
an  21. 4 

C  1.2 

hy  9.2 
mt  1.4 

Dorsey’s  Run, 

Howard  County, 
Maryland. 

W.  F.  Hille- 
brand. 

C.  R.  Keyes, 

15  A.  R.  IT.  S.  G.  S., 
p.  722,  1895. 

Biotite-granite. 

186 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  PERSALANE— Continued. 


RANG  3.  ALKALICALCIC.  COLORADASE— Continued. 


No. 

Si02 

A]2C>3 

Fe203 

FeO 

MgO 

CaO 

Na^O 

k2o 

H20  + 

H,0- 

CO, 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

4 

65.  23 

16.  94 

1.60 

1.91 

1.31 

3.  85 

3.  57 

3.  02 

0.  88 

0. 18 

0.  25 

0.  66 

0. 19 

trace 

0. 19 

99.  78 

Al.  I 

1.0S7 

.  166 

.010 

.027 

.033 

.069 

.058 

.032 

.008 

.001 

— 

.001 

5 

67.  54 

17.  02 

2.  97 

0.  34 

0. 13 

3.  36 

4.  62 

2.  28 

0.  55 

0.80 

trace 

trace 

100. 05 

A2.  II 

1. 126 

.167 

.019 

.005 

.003 

.060 

.075 

.024 

.010 

— 

6 

66.  05 

16.  96 

2.  59 

1.38 

2. 08 

3.37 

4.  20 

2.  53 

0.  69 

0.34 

trace 

none 

100.  22 

A2.  II 

1.101 

.166 

.016 

.019 

.052 

.060 

.068 

.027 

.004 

_ 

— 

7 

65.  97 

16.53 

2.59 

1.72 

2.  11 

3.37 

3.  41 

2.  67 

1.23 

0.42 

trace 

none 

100.  33 

A2.  II 

1.100 

.162 

.016 

.024 

.053 

.060 

.055 

.028 

.005 

- r. 

8 

65.  60 

17.  61 

0.  95 

2.  76 

1.49 

3.  72 

4.  36 

2.36 

0.  59 

0.  75 

0. 16 

none 

100.  38 

A2.  II 

1.093 

.173 

.006 

.038 

.038 

.066 

.070 

.025 

.009 

.001 

— 

9 

64.  85 

16.  57 

2. 10 

2. 15 

2.14 

4.  01 

3.  71 

3. 10 

0.  35 

0.91 

0. 14 

none 

100.  03 

A2.  II 

1.081 

.162 

.013 

.030 

.054 

.072 

.060 

.033 

.011 

.001 

— 

10 

65.  66 

15.  61 

2. 10 

2.07 

2.  46 

3.64 

3.65 

2.  03 

1.07 

1.37 

trace 

none 

100.  27 

A2.  II 

1.094 

.153 

.013 

.029 

.  062 

.065 

.059 

.022 

.017 

— 

— 

11 

64.  27 

17.84 

3.36 

1.29 

2.  00 

3.42 

3.84 

2.  48 

1.32 

0.32 

0. 16 

none 

100.  33 

A2.  II 

1.071 

.175 

.021 

.018 

.050 

.061 

.062 

.026 

.004 

.001 

— 

12 

65.  63 

17.00 

2.55 

1. 19 

2.  03 

3.  48 

4.  42 

1.64 

2.00 

0.  27 

trace 

0.  07 

none 

100. 32 

A2.  II 

1.094 

.167 

.016 

.017 

.051 

.062 

.071 

.018 

* 

.001 

— 

13 

64.61 

18.  62 

2.  78 

0.  95 

0.  85 

4.  20 

4.  37 

2.36 

0.  93 

0.  25 

none 

0.30 

trace 

100. 23 

A2.  II 

1.077 

.182 

.017 

.014 

.021 

.075 

.071 

.025 

.002 

— 

14 

64.  23 

16.  34 

1.07 

1.58 

2. 47 

3.  07 

3.49 

2.59 

1.76 

0.  47 

0.  30 

0.  50 

0. 18 

trace 

0. 19 

99.  91 

Al.  1 

1.071 

.160 

.007 

.022 

.062 

.055 

.  056 

.027 

.006 

.001 

— 

.001 

15 

63.  76 

16. 01 

2.  22 

1.96 

2.  43 

4. 55 

3.  98 

2.  84 

0.  57 

0.  28 

0.  23 

0.52 

0.  25 

0.  09 

0. 17 

99.  95 

Al.  I 

1.063 

.157 

.014 

.028 

.061 

.081 

.064 

.030 

.006 

.002 

.001 

.001 

16 

63. 42 

17. 16 

3.  09 

1.50 

1.64 

4.  65 

4.  51 

3.  04 

0.  28 

0. 16 

0.  35 

0.  26 

0.04 

100.  29 

A2.  II 

1.057 

.169 

.019 

.021 

.041 

.083 

.073 

.032 

.004 

.002 

— 

17 

61.  50 

17.42 

4.  66 

1.09 

1.26 

5.  33 

3.99 

1.29 

2.44 

none 

0.  60 

trace 

99.  96 

A2.  II 

1.015 

.170 

.029 

.015 

.032 

.094 

.064 

.014 

— 

.004 

— 

18 

68.10 

14.  97 

2.  78 

1.  10 

1. 10 

3.04 

3.  46 

2.  93 

1.28 

0.  92 

0.  07 

0. 16 

0.09 

none 

100.  11 

2.  736 

Al.  I 

1.135 

.147 

.017 

.015 

• 

.015 

.054 

.056 

.031 

.001 

.001 

.001 

— 

16“ 

19 

67.01 

18.  03 

0.  66 

0.  72 

0.  84 

3.99 

4.  42 

3.  53 

0.  91 

0. 10 

0.  09 

0. 10 

1(H).  40 

A2.  II 

1.117 

.175 

.004 

.010 

.021 

.071 

.071 

.037 

.001 

.001 

.001 

20 

63.  66 

17.  05 

1.97 

2.  62 

1.99 

3.89 

4. 13 

3.  09 

1.19 

0.  27 

0. 14 

100. 08 

A2.  II 

1.061 

.167 

.013 

.  036 

.050 

.070 

.066 

.033 

.002 

.002 

PERSALANE - YELLOWSTONOSE. 


187 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 

SUBRANG  4.  DOSODIC.  YELLOWSTONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

s 

none 

none 

Q  22.0 
or  17.  8 
ab  30. 4 
an  19. 2 

C  0.7 

hy  4.5 
mt  2. 3 
il  1.2 

Silver  Wreath  Tunnel, 
Willow  Creek  Dist., 
Boise  Co.,  Idaho. 

G.  Steiger. 

W.  Lindgren, 

18  A.  R.U.  S.  G.  S.,  Ill, 
p.  640,  1898. 

Biotite-granite. 

so3 

ct 

LLO 

0. 26 

0.15 

0.03 

Q  24.5 
or  13. 3 
ab  39. 3 
an  16. 7 

C  0.8 

hy  0.8 
il  1.2 
hm  3.0 

Electric  Peak,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield.- 

J.  P.  Iddings, 

12  A.  R.U.  S.  G.  S.,  I, 
p.  627,  1891. 

Quartz-mica- 

diorite. 

SO:,  for  S. 

Near  lassenose. 

so3 

Cl 

LLO 

0.03 

trace 

none 

Q  21.5 
or  15.0 
ab  35. 6 
an  16. 7 

C  1.1 

hy  5.2 
mt  3.7 
il  0. 5 

Electric  Peak,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.G.  S.,I, 
p.  627,  1891. 

Quartz-mica- 

diorite. 

S03  for  S. 

so3 

Cl 

Li.,0 

0.13 

0. 09 

0.09 

Q  25.6 
or  15. 6 
ab28. 8 
an  16. 7 

C  1.9 

hy  5.7 
mt  3.7 
il  0.8 

Electric  Peak,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S.,I, 
p.  627,  1891. 

Quartz-miea- 

diorite- 

porphyrite. 

S03  for  S. 

S03 

Cl 

Li.,0 

trace 

none 

0.03 

Q  19.8 
or  13. 9 
ab  36. 7 
an  18. 3 

C  1.2 

hy  6.9 
mt  1. 4 
il  1.4 

Electric  Peak,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S.,  I, 
p.  627,  1891. 

Quartz-mica- 

diorite. 

S03 

Cl 

LLO 

trace 

none 

none 

Q  19.3 
or  18. 3 
ab31.4 
an  19. 2 

di  0.8 
hy  5.9 
mt  3.0 
il  1.7 

Electric  Peak,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.U.  S.  G.  S.,I, 
p.  627,  1891. 

Quartz- mica- 
diorite. 

S03 

Cl 

LLO 

0.13 

0. 12 

0.36 

Q  25.0 
or  12.2 
ab  30. 9 
an  18. 1 

C  0.7 

hy  6.2 
mt  2.8 
il  2.6 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.S.  G.  S.,  I, 
p.  648,  1891. 

Dacite. 

so3 

Cl 

Li20 

trace 

none 

0.03 

Q  22.3 
or  14.5 
ab  32. 5 
an  17. 0 

C  2.7 

hy  5.0 
mt  4. 2 
il  0. 6 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S.,I. 
p.  648,  1891. 

Hornblende- 

mica- 

andesite. 

so3 

Cl 

LioO 

trace 

trace 

0.04 

Q  23.1 
or  10.0 
ab  37. 2 
an  17. 2 

C  1.6 

hy  5. 1 
mt  3. 8 

Fan  Creek,  Yellow¬ 
stone  National 

Park. 

J.  E.  Whitfield. 

* 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  81,  1899. 

Hornblende- 

mica-andesite- 

porphyry. 

so3 

Cl 

‘  LLO 

trace 

trace 

0.01 

Q  19.8 
or  13. 9 
ab37.2 
an  20. 9 

C  1.1 

hy  2.1 
mt  3. 2 
hm  0.  6 

Crescent  Hill,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  272,  1899. 

Hornblende- 
mi  ca-an  de¬ 
site. 

FeSo 

NiO' 

SrO 

LLO 

1.61 

none 

0. 06 
trace 

Q  23.5 
or  15. 0 
ab  29. 3 
an  15. 3 

C  2.2 

hy  7.5 
mt  1. 6 
il  0.9 
pr  1.6 

Crater  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

H.  N.  Stokes. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  96,  1900. 

Granite-por¬ 

phyry. 

Cl 

NiO 

SrO 

LisO 

trace 

none 

0.09 

trace 

Q  16.6 
or  16.7 
ab  33. 5 
an  20.  3 

di  1.8 
hy  6.2 
mt  3.2 
il  0.9 

Needle  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

H.  N.  Stokes. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.  168, 
p.  96,  1900. 

Diorite. 

Near  tonalose. 

NiO 

0. 19 

Q  14.2 
or  17.8 
ab  38. 3 
an  17.8 

di  4.2 
hy  2.4 
mt  3. 9 
il  0.6 
hm  0.3 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Natl.  Park. 

W.  H.  Melville. 

J.  P.  Iddings, 

M.U.  S.G.S.,  XXXII, 
p.  ’261,  1899. 

Quartz-diorite- 

porphyrite. 

S03 

Li.,0 

0. 35 

0.03 

Q  21.8 
or  7.8 
ab  33. 5 
an  22. 5 

C  1.1 

hy  3.2 
mt  3.5 
hm2.2 
ap  1.4 

Indian  Creek  Lacco¬ 
lith,  Yellowstone 
National  Park. 

W.H.  Whitfield. 

J.  P.  Iddings, 

M.  U.S. G.S., XXXII, 
p.  61,  1899. 

Hornblende- 

mica-por- 

phvrite. 

S03  for  S. 

Cl 

SrO 

0.03 

0.08 

Q  28.7 
or  17. 2 
ab  29. 3 
an  15. 0 

C  0.6 

hy  2.7 
mt  3.9 

Johnson  Gulch,  Lead- 
ville,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

M.  U.  S.  G.  S.,  XII, 
p.  332,  1886. 

Porphyry 

SrO 

Li»0 

0.08 

none 

Q  18.2 
or  20.6 
ab  37. 2 
an  18. 6 

Q  15.5 
or  17.3 
ab  34. 6 
an  18. 9 

di  0. 9 
hy  2.5 
mt  0.9 

hy  8.1 
mt  3. 0 
ap  0.6 

Copper  Mountain, 
Leadville,  Colo¬ 
rado. 

Gold  Hill,  Ten  Mile 
District,  Colorado. 

L.  G.  Eakins. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  176,  1897. 

W.  Cross, 

14  A.  R.  U.S.  G.  8.,  II, 

.  p.  227,  1894. 

Diorite-por- 

phyry. 

Quartz-horn- 

blende-mica- 

porphyrite. 

188 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  PERSALANE— Continued. 

RANG  3.  ALKALI  CALCIC.  COLORADASE— Continued. 


No. 

Si02 

Al3Og 

Fe,Og 

FeO 

MgO 

CaO 

Na,0 

K,0 

h2o+ 

h2o- 

C02 

TiO, 

PA 

MnO 

P>aO 

Sum 

• 

Sp.  gr. 

21 

62.  85 

16.21 

3.  08 

1.46 

1.47 

4.  72 

3.49 

3. 10 

2.  03 

0.  29 

0.41 

0.  48 

0. 15 

0. 11 

99.  85 

Al.  I 

1.048 

.159 

.020 

.020 

.037 

.084 

0.56 

.033 

.005 

.003 

.002 

.001 

' 

22 

61.42 

17.69 

4.24 

1.  74 

1.81 

5.  29 

3. 14 

3. 19 

0.  97 

0.  37 

0. 14 

0. 19 

0.  09 

100. 28 

Al.  I 

1.024 

.174 

.027 

.025 

.045 

.094 

.  050 

.034 

.005 

.001 

.003 

.001 

23 

59.  29 

21.27 

3.33 

1.04 

1.12 

5.  25 

3.  39 

3.  00 

1.  63 

0. 23 

0.  21 

99.  76 

2.  596 

A2.  II 

.988 

.208 

.020 

.014 

.028 

.094 

.  055 

.032 

.002 

.003 

14.5° 

24 

63.  30 

17.81 

3.42 

0.  83 

2.07 

5. 12 

4.27 

2.  26 

0.  88 

99.  96 

A3.  Ill 

1. 055 

.174 

.021 

.011 

.  052 

.091 

0.69 

.024 

25 

68. 12 

16.  24 

1.  26 

2.08 

1.  35 

3.80 

3.  89 

2.54 

0.  40 

0.  25 

0. 14 

0. 10 

0.  09 

100. 28 

Al.  I 

1. 135 

.159 

.008 

.030 

.034 

.068 

.063 

.027 

.003 

.001 

.001 

.001 

26 

68. 10 

15. 18 

1.34 

1.  70 

2.  06 

4.  66 

3.  71 

1.48 

0.  55 

0.  35 

0. 18 

0.  20 

0.  06 

99.  57 

A2.  II 

1.135 

.149 

.008 

.024 

.052 

.083 

.059 

.016 

.004 

.001 

.003 

— 

27 

64. 48 

19.  28 

1.40 

1.  78 

1.64 

5.  06 

4.41 

1. 12 

0.  06 

• 

99.  23 

B3.  IV 

1.075 

.189 

.009 

.025 

.041 

.090 

.071 

.012 

- 

28 

64.  52 

18.  31 

0.90 

2.  51 

2.  35 

5. 11 

4.  64 

1.25 

0.20 

99.  79 

A3.  Ill 

1. 075 

.179 

.006 

.035 

.  059 

.091 

.075 

.014 

29 

64.  24 

18.  67 

1.40 

1.96 

1.48 

f 

4. 11 

4. 14 

1.  71 

1.18 

0.  76 

0.  08 

trace 

100. 20 
.  05 

A2.  II 

1.071 

.183 

.009 

.028 

.037 

.073 

.067 

.018 

.009 

.001 

— 

100. 15 

30 

63.81 

17.07 

2.11 

2. 15 

2.  28 

4.97 

4.  08 

1.96 

1..03 

— 

0.38 

0. 10 

0.  09 

0.  04 

100. 10 

Al.  I 

1.004 

.167 

.013 

.030 

.047 

.089 

.066 

.021 

.005 

.001 

.001 

— 

31 

67.  33 

15.  93 

1.90 

1.  59 

1.63 

4.  09 

3.  76 

2.  46 

0.  66 

0. 19 

0.36 

0. 11 

0.  09 

0.  08 

100. 18 

Al.  1 

1.122 

.156 

.012 

.022 

.041 

.073 

.060 

.025 

.005 

.001 

.001 

.001 

32 

66.  94 

16.  49 

1.41 

1.87 

1.98 

4.  77 

3.  88 

1.  65 

0.  22 

0.  35 

0.  30 

0. 12 

0. 13 

0.  07 

100.  23 

Al.  I 

1.116 

.161 

.009 

.027 

.050 

.086 

.063 

.018 

.004 

.001 

.002 

— 

33 

66.  65 

17.  61 

0.  93 

1.67 

1.26 

4.  44 

4.59 

1.70 

0.  41 

0.  03 

0.  33 

0. 18 

0.  07 

0. 12 

99.  99 

Al.  I 

l.lil 

.172 

.006 

.024 

.032 

.079 

.074 

.018 

.004 

.001 

.001 

.001 

34 

66.  65 

16. 15 

1.52 

2.  36 

1.  74 

4.53 

3. 40 

2.  65 

0.  72 

0. 18 

0.  38 

0. 10 

0. 10 

0.  07 

100. 57 

Al.  I 

l.lil 

.158 

.009 

.033 

.044 

.080 

.053 

.029 

.005 

.001 

.001 

— 

35 

65.  43 

17. 11 

2.39 

1.  19 

1.48 

3.88 

3.  66 

2.  83 

0.  36 

0.  20 

0.  83 

trace 

0.  70 

100.  26 

A2.  II 

1.091 

.168 

.015 

.017 

.037 

.070 

.059 

.030 

.010 

— 

.010 

36 

71.  63 

13.  86 

0.  46 

2.  76 

trace 

3.  26 

3.  40 

2.  65 

0.  89 

trace 

0.  20 

99. 11 

2.  68 

B2.  Ill 

1.194 

.136 

.003 

.038 

— 

.058 

.055 

.028 

— 

.001 

37 

66.  02 

17.  06 

2. 14 

3.  01 

1.97 

4.64 

3.  98 

1.44 

0.36 

0. 05 

100.  67 

2.  544 

A3.  Ill 

1. 100 

.167 

.013 

.042 

.049 

.083 

.064 

.016 

.001 

38 

65. 10 

16. 16 

3.  28 

0.  90 

1.82 

4.  30 

3.  35 

2.40 

2.58 

n.  (1. 

0.30 

100. 19 

2.  574 

A3.  Ill 

1.085 

.158 

.020 

.012 

.046 

.077 

.054 

.  025 

— 

.002 

PE  RS  ALAN  E - Y  EL  LO  W  STONOSE . 


189 


ORDER  4.  QUARDOFELIC.  BRITANNARE — Continued. 


SUBRANG  4.  DOSODIC.  YELLOWSTONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  20.1 
or  IS.  3 
ab  29. 3 
an  19. 5 

di  0. 5 
hv  3. 4 
nit  3. 5 
il  0.S 
inn  0. 8 

Mount  Marcellina, 
West  Elk  Moun¬ 
tains,  Colorado. 

T.  M.  Chatard. 

W.  Cross, 

14  A.  R.  U.  S.G.  S.,II, 
p.  227,  1894. 

Diorite-por- 

phyrite. 

Q  17.5 
or  18.9 
ab  26. 2 
an  25. 0 

di  1.0 
hy  4. 1 
nit  4. 6 
il  0.8 
hml.l 

Storm  Ridge,  West 

Elk  Mountains, 
Colorado. 

L.  G.  Eakins. 

W.  Cross, 

14  A.  R.  U.  S.G.  S., II, 
p.  227,  1894. 

Porphyrite. 

Near  tonalose. 

Q  15.0 
or  17.8 
ab  28. 8 
an  26. 1 

C  2.8 

hy  2.8 
mt  3.2 
lrn  1. 0 

Table  Mountain, 
Denver,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

Proc.  Colo.  Sc.  Soc.,  I, 
p.  72,  1886. 

Augite-ande- 

site. 

Pebble. 

A1203  high? 

Q  16.4 
or  13.3 
ab  36. 2 
an  22. 5 

di  2.2 
hy  4.2 
nit  2.6 
hml.6 

Mount  Rose,  Washoe, 
Nevada. 

R.  W.  Wood¬ 
ward. 

G.  F.  Becker, 

M.  L.  S.  G.  S.,  Ill, 
p.  152,  1882. 

Hornblende- 

mica-ande¬ 

site. 

Also  in  Hague 
and  Iddings, 
B.  U.S.  G. 

17,  p.  33,  1885. 

Cr.03 

SrO 

LioO 

none 

0. 02 
trace 

Q  25.6 
or  14. 0 
ab  33. 0 
an  18. 9 

hy  6.0 
mt  1. 9 
il  0. 5 

Crater  Peak,  Shasta 
County,  California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S.  I, 
p.  731,  1896. 

Hypersthene- 

andesite. 

Also  in  J.  G., 
Ill,  p.  407, 
1895. 

♦ 

Q  27.8 
or  8.9 
ab  30. 9 
an  20. 6 

di  2.2 
hy  5. 8 
mt  1. 9 
il  0.6 

Ono,  Shasta  County, 
California. 

T.  M.  Chatard. 

B.  U.  S.  G.  S. 

148  p.  191,  1897. 

Diorite. 

Not  described. 

Q  20.4 
or  6. 7 
ab  37. 2 
ail  25.0 

C  1.6 

hv  6. 2 
mt  2.1 

Black  Butte,  Mount 
Shasta,  California. 

W.  H.  Mel¬ 
ville. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  150, 
p.  223,  1898. 

Hornblende- 

andesite. 

Near  amado- 
rose. 

Q  16.3 
or  7. 8 
ab  39. 3 
an  25. 3 

hy  9.8 
mt  1.4 

West  base  Mount 
Shasta,  California. 

W.  H.  Mel¬ 
ville. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  150, 
p.  228,  1898. 

Hvpersthene- 

andesite. 

Near  amado- 
rose. 

so3 

Cl 

0.22 

0.25 

Q  22.1 
or  10. 0 
ab  35. 1 
an  20. 3 

C  2.6 

hy  5.0 
mt  2.1 
il  1.4 

Clear  Creek,  Shasta 
County,  California. 

J.  E.  Whit¬ 
field. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.  150, 
p.  236,  1898. 

Dacite- 

porphyry. 

SOs  for  S. 

Cl  high? 

t 

SrO 

LioO 

0. 03 
trace 

Q  18.7 
or  11.7 
ab  34. 6 
an  22. 2 

di  2.0 
hy  6.2 
nit  3.0 
il  0.8 

Head  of  Mill  Creek, 
Shasta  County, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  148, 
p.  194,  1897. 

Dacite? 

Dried  at  110°. 
Near  tona¬ 
lose. 

SrO 

LioO 

trace’ 

trace 

Q  25.3 
or  13.9 
ab  31. 4 
an  19. 7 

di  0. 5 
hy  4.5 
mt  2. 8 
il  0.8 

Mount  Ingalls, 

Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner. 

17  A.  R.  U.'S.  G.  S., 

I,  p.  724,  1896. 

Granodiorite. 

Also  in  J.  G., 
Ill,  p.  403, 
1895. 

SrO 

LioO 

0.05 

trace 

Q  24.0 
or  10. 0 
ab  33. 0 
an  22. 2 

di  1.5 
hy  6.1 
mt  2. 1 
il  0.6 

Near  Goodyear’s  Bar, 
Sierra  County,  Cal¬ 
ifornia. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  731,  1896. 

Hypersthene- 

andesite. 

Also  in  J.  G,, 
III,  p.  407, 
1895. 

SrO 

Li..O 

trace 

trace 

Q,  21.3 
or  10. 0 
ab  38. 8 
an  22. 0 

hy  4.9 
mt  1.4 
il  0.6 

Indian  Valley, 

Sierra  County,  Cal¬ 
ifornia. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  IT.  S.  G.  S., 

I,  p.  724,  1896. 

Quartz-diorite- 

porphyry. 

Also  in  J.  G., 
Ill,  p.  403, 
1895. 

. 

FeSo 

SrO 

Li..,0 

0. 02 

trace 

trace 

Q  24.0 
or  16. 1 
ab  27. 8 
an  21. 1 

di  1.0 
hy  6. 4 
mt  2. 1 
il  0.8 

Near  Nevada  City, 
Nevada  County, 
California. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

.17  A.  R.  U.  S.  G.  S., 
II,  p.  38,  1896. 

Granodiorite. 

NiO 

0.20 

Q  22.8 
or  16.7 
ab  30. 9 
an  19. 5 

C  0.9 

hy  3.7 
mt  1. 6 
il  1.5 
hm  1.3 

Clear  Lake,  Califor¬ 
nia. 

W.  H.  Mel¬ 
ville. 

G.  F.  Becker, 

M.  U.  S.  G.  S.,  XIII, 
p.  154,  1888. 

Andesite. 

Q  33.3 
or  15. 6 
ab  28. 8 
an  14. 7 

hy  4. 6 
mt  0.7 
ap  0.4 

Carmelo  Bay,  Cal¬ 
ifornia. 

J.  Posada. 

A.  C.  Lawson, 

B.  G.  Dep.  Un.  Cal., 

I,  p.  16,  1893. 

Granite. 

Q  22.6 
or  8. 9 
ab  33. 5 
an  23. 1 

hy  8.8 
mt  3. 0 

Cerro  de  Tlapacoya, 
Lake  Chaleo, 
Mexico. 

A.  Rohrig. 

H.  Lenk, 

Btr.  G.  Mex.,  II, 
p.  233,  1899. 

Hornblende- 

andesite. 

Q  24.7 
or  13. 9 
ab  28. 3 
an  21. 4 

C  0.2 

hy  4.6 
mt  2.8 
hml.3 

Ferreria  San  Esteban, 
Oaxaca,  Mexico. 

A.  Rohrig. 

H.  Lenk, 

Btr.  G.  Mex.,  II, 
p.  132,  1899. 

Trachyte. 

190 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE-*-Continued. 

RANG  3.  ALKALICALCIC.  COLOR AI) ASE — Continued. 


No. 

Si02 

A1A 

Fe.A 

FeO 

MgO 

CaO 

Na.20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

o 

P-T 

MnO 

BaO 

Sum 

Sp.  gr. 

39 

65.  03 

18.  83 

2.35 

n.  d. 

2.  06 

4.  43 

4.  38 

2.24 

1.00 

100.  32 

2.  589 

A4.  IV 

1.084 

.185 

.015 

(.030) 

.052 

.078 

.071 

.023 

40 

69.90 

14.16 

2.  98 

1.08 

1.38 

4.  30 

3.  20 

1.95 

1.08 

0.  83 

trace 

100.  86 

B2.  Ill 

1.165 

.139 

.019 

.015 

.035 

.077 

.051 

.021 

.010 

— - 

41 

68.  20 

15.83 

2.  86 

0.  51 

2. 14 

3.  49 

3.  07 

2.  88 

0.  50 

— 

0.  06 

0.  46 

o.  or 

0.  08 

100. 10 

Al.  I 

1.137 

.  155 

.018 

.007 

.054 

.062 

.050 

.030 

.006 

— 

.001 

42 

67.40 

19.  06 

0.  71 

1.31 

1.90 

4.30 

3. 16 

1.52 

0.30 

— 

0.  32 

0.34 

0.  02 

0.06 

100.  40 

A2.  II 

1.123 

.187 

.004 

.018 

.048 

.077 

.051 

.016 

.004 

— 

.001 

43 

65.  88 

15.  61 

2,42 

2.  71 

1.  76 

3.  70 

3.  92 

2.  29 

1.05 

— 

trace 

0. 43 

0. 13 

0.  08 

none 

100.  00 

Al.  I 

1.098 

.153 

.015 

.038 

.044 

.066 

.063 

.024 

.005 

.001 

.001 

44 

62.  95 

20.  81 

1.73 

0.39 

2.  66 

3.  75 

4. 15 

3. 46 

0.  20 

— 

0.  02 

trace 

0.09 

none 

100. 22 

A2.  II 

1.049 

.204 

.011 

.005 

.067 

.067 

.067 

.037 

— 

.001 

— 

45 

68.  41 

16.  08 

2. 12 

1.44 

1.14 

3.  52 

4.  52 

2.  24 

0.  33 

99.  84 

A3.  Ill 

1.140 

.157 

.013 

.020 

.029 

.  062 

.072 

.023 

46 

67.  30 

17. 55 

1.47 

1.67 

1.04 

3.  48 

3.  90 

2. 13 

0.  80 

.013 

99.47 

A3.  Ill 

1. 122 

.172 

.009 

.024 

.026 

.062 

.063 

.022 

.001 

47 

63. 19 

18.  65 

4.01 

1.89 

1.30 

4.  86 

3.  69 

1.95 

0.  07 

0. 18 

0.  25 

0. 13 

100.  07 

A2.  II 

1. 053 

.182 

.025 

.027 

.030 

.088 

.059 

.021 

.002 

.002 

.002 

48 

63. 18 

19.79 

1.10 

3.  23 

1.51 

4.  04 

5. 12 

2. 42 

0.  62 

101.01 

B3.  IV 

1. 053 

.194 

.007 

.044 

.035 

.072 

.082 

.026 

49 

70.  33 

15.  59 

3.05 

n.  d. 

1.30 

3.05 

4.  50 

1.29 

n.  d. 

1.09 

100.  20 

A3.  Ill 

1. 172 

.153 

.020 

(.040) 

.033 

.055 

.072 

.014 

.013 

50 

61.93 

18.  83 

3.  24 

1.24 

2.  37 

4.  46 

4. 16 

2.  72 

1.83 

* 

100.  78 

2.  62 

A3.  Ill 

1.032 

.184 

.020 

.017 

.059 

.080 

.068 

.028 

51 

59.  44 

18.  97 

5.  25 

1.72 

0.  85 

6.  85 

3.  08 

2.  46 

1.22 

99.  84 

2.  65 

A3.  Ill 

.991 

.186 

.033 

.024 

.021 

.122 

.050 

.026 

52 

63.  62 

17.  72 

3.  24 

3.  40 

1.49 

4.  83 

2.  29 

1.99 

1.09 

99.  67 

A3.  Ill 

1.060 

.174 

.020 

.048 

.037 

.086 

.037 

.021 

53 

67.  34 

15.  96 

3.38 

0.  80 

0.  88 

2.98 

4.  12 

1.  66 

2.  20 

0.56 

99.  78 

2.462 

A3.  Ill 

1.122 

.156 

.021 

.011 

.022 

.053 

.066 

.018 

.007 

54 

64.  83 

17.60 

4.  95 

1.82 

1.61 

5.  26 

2.  52 

1.53 

0.  20 

0. 08 

100. 40 

2.539 

A3.  Ill 

1.081 

.172 

.031 

.025 

.  040 

.094 

.041 

.017 

.001 

55 

62.  90 

18.  29 

1.79 

4.  00 

1.61 

5.  62 

2.  91 

1.48 

0.  98 

0. 18 

99.  77 

2.  464 

A3.  Ill 

1.048 

.179 

.012 

.056 

.040 

.100 

.047 

.016 

.002 

PERSALANE - YELLOWSTONOSE. 


191 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 

SUBRANG  4.  DOSODIC.  YELLOWSTONOSE — Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  16.9 
or  12.8 
ab  37. 2 
an  21. 7 

C  1.3 

hy  9.1 

Nevado  de  Toluca, 
Mexico. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  458,  1887. 

Andesite. 

Q  33.2 
or  11.7 
ab  26. 7 
an  18. 6 

di  2.2 
hy  2. 5 
nit  1.2 
il  1.5 
hm  2. 2 

Serro  Colorado,  Aruba 
Island,  West  Indies. 

Perlstein. 

J.  H.  Kloos, 

Samml.  G.  R.  Mus., 
Leiden,  I,  p.  19,  1887. 

Quartz-diorite. 

FeS.. 

0.01 

Q  28.7 
or  16.  7 
ab  26. 2 
an  17.2 

C  1.3 

hy  5.4 
mt  0. 5 
il  0.8 
hm  2. 5 

Average  Sample,  Es- 
sequibo  River,  Brit¬ 
ish  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Esseq.  R., 
p.  42,  1900. 

Hornblende- 

granite. 

Dried  at  100°. 
Near  amiatose. 
Aik.  corr.  Priv. 
contrib.  J.B.  H. 

FeS.. 

CuS' 

trace 

trace 

Q  30.5 
or  8.9 
ab  26. 7 
an  21.4 

C  4.4 

hy  6.1 
mt  0.9 
il  0.6 

Average  Sample,  Es- 
sequibo  River,  Brit¬ 
ish  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Esseq.  R., 
p.  34,  1900. 

Granitite- 

gneiss. 

Dried  at  100°. 

ZrO.' 

Cl 

FeS, 

CoO 

CuO 

trace 

0.02 

trace 

none 

trace 

Q  22.9 
or  13.3 
ab  33. 0 
an  18. 3 

hy  6. 8 
mt  3.5 
il  0.8 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Private  contribution. 

Granitite. 

Dried  at  100°. 

Q  13.4 
or  20. 6 
ab  35. 1 
an  18. 6 

C  3.4 

hy  6.7 
mt  1.2 
hml.O 

Sericambra,  Derne- 
rara,  British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Esseq.  R., 
p.  44,  1900. 

Syenite. 

Dried  at  100°. 
Aik.  corr.  Priv. 
contrib.J.B.H. 

Q  24.6 
or  12. 8 
ab  37. 7 
an  17. 4 

hy  3.8 
mt  3. 0 

Paramo,  Azufral  de 
Tuquerres,  Colom¬ 
bia. 

R.  Kiich. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  155,  1892. 

Biotite-horn- 

blende-daeite. 

Q  26. 8 
or  12. 2 
ab  33.0 
an  17. 2 

C  2.6 

hy  4.6 
mt  2.1 

Paramo,  Azufral  de 
Tuquerres,  Colom¬ 
bia. 

R.  Kiich. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  155,  1892. 

Biotite-horn- 

blende-dacite. 

Q  22.0 
or  11.7 
ab  30. 9 
an  24. 5 

C  1.4 

hy  3.0 
mt  5.8 
il  0.3 

Mte.  Tajumbina, 

Peru. 

C.  Hoepfner. 

C.  Hoepfner, 

In.  Diss.  Halle, 
p.  32,  1881. 

Dacite. 

Q  11.3 
or  13.5 
ab  43. 0 
an  20. 0 

C  1.4 

hy  8. 5 
nit  1.6 

Gualilan,  San  Juan 
Province,  Argen¬ 
tina. 

B.  Wetzig. 

A.  Stelzner, 

Btr.  G.  Arg.  Rep.,  I, 
p.  186,  1885. 

Dacite. 

Sum  high. 

Q  29.2 
or  7. 8 
ab  37. 7 
an  15. 3 

C  1.2 

hy  6.8 
il  2.0 

Farsund,  n.  Lister, 
Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  p. 113. 

Hypersthene- 

adamellite. 

Q  14.2 
or  15. 6 
ab  35. 6 
an  22. 2 

C  0.8 

hy  5.9 
mt  4. 5 

Kesselsdorf,  Saxony. 

W.  Bruhns. 

W.  Bruhns, 

Z.D.G.G.,  XXXVI 11, 
p.  750,  1886. 

Feldspar-por- 

phyrite. 

Q  16.9 
or  14. 5 
ab  26. 2 
an  30. 6 

di  2.6 
hv  0.9 
mt  7.0 

Kaut'bach,  Saxony. 

W.  Bruhns. 

W.  Bruhns, 

Z.D.G.G.,  XXXVIII, 
p.  754,  1886. 

Augite-porphy- 

rite. 

Q  28.5 
or  11.7 
ab  19. 4 
an  23. 9 

C  3.1 

hy  7.3 
mt  4. 6 

Mte.  Colmo,  Adam- 
ello,  Tyrol. 

C.  Riva. 

C.  Riva, 

cf.  N.  J.,  1897,  II, 
p.  65. 

Quartz-mica- 

porphyrite.J 

Q  29.4 
or  10.0 
ab  34. 6 
an  14. 7 

C  1.9 

hy  2.0 
mt  0. 9 
il  1.1 
hm  2. 7 

Kolantziki,  Megara, 
Greece. 

A.  Rbhrig. 

H.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Biotite-dacite. 

Q  30.3 

1  or  9. 5 
ub  21. 5 
!  an  26. 1 

C  2.0 

hy  4. 0 
mt  6. 8 

Panagia,  Methana, 
Greece. 

A.  Rohrig. 

H.  S.  Washington 

J.  G.,  Ill, 
p.  150,  1895. 

Hornblende- 

hypersthene- 

dacite. 

Near  kadiak- 
ose. 

Cl 

0. 01 

Q  23.2 
or  8. 9 
ab  24. 6 
j  an  27. 8 
C  1.6 

hy  9.8 
mt  2. 0 

Kosona,  Methana, 
Greece. 

A.  Rohrig. 

H.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Hornblende- 
hype  rsthene- 
dacite. 

Near  kadiak- 
ose. 

192 


CHEMICAL  ANALYSE*  <>E  IGNEOUS  ROCKS. 


GLASS  I.  PERSALANE — Continued. 
RANG  3.  ALKALICALCIC.  COLORADASE— Continued. 


No. 

Si02 

aia 

LeA 

FeO 

AlgO 

CaO 

Na20 

K,0 

H,0+  H20— 

C02  Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

56 

59.  93 

16.  99 

3.  58 

1.  28 

1.  51 

5.92 

3.23 

1.  55 

4.28 

0.96 

99.  23 

2.  327 

B3. 

IV 

.992 

.  166 

.022 

.018 

.037 

.106 

.052 

.017 

.012 

99.  72 

57 

66. 18 

18.  71 

1.49 

2. 00 

0.  87 

3.  28 

3.63 

2.  84 

0.  72 

(98. 29) 

A3. 

III? 

1. 103 

.183 

.009 

.028 

.  022 

.059 

.058 

.030 

58 

68.  51 

15.  96 

.2.  61 

1.09 

1.07 

3. 14 

4.  01 

1.82 

n.  d. 

0.82 

0.  28 

100.  65 

2.  329' 

A2. 

II 

1.142 

.156 

.016 

.015 

.027 

.  056 

.064 

.020 

.010 

.004 

59 

67.  56 

16.  39 

1.25 

1.  86 

1.48 

5.08 

3.  54 

1.77 

n.  d.  0. 17 

0.  79 

99.  89 

2.  678 

A3. 

III 

1.126 

.160 

.008 

.026 

.037 

.091 

.  057 

.020 

1 

.011 

i 

21° 

RANG  3.  ALKALICALCIC.  COLORADASE. 


i 

69.  66 

17.  57 

0.  21 

1.04 

0.  58 

4.  54 

4.  91 

0.  71 

0.  50 

0.  05 

none 

0.21 

0. 03 

trace 

0.  03 

100.  09 

Al.  I 

1.161 

.172 

.001 

.014 

.015 

.081 

.079 

.007 

.003 

— 

— 

• — 

2 

70.  96 

16.  64 

0.  22 

1.48 

1.29 

3.46 

4.59 

0.  24 

0.  68 

0.42 

0.  38 

0.  01 

0.  10 

100. 47 

2.  737 

A2.  II 

1.178 

.163 

.001 

.021 

.032 

.061 

.074 

.002 

.005 

— 

.001 

3 

69.  34 

17.  25 

2.  46 

n.  d. 

1.18 

3.  43 

4.  33 

0.71 

1. 17 

99.87 

A4.  IV 

1.156 

.169 

.015 

(.030) 

.030 

.060 

.069 

.007 

4 

66.97 

17.  20 

3.  27 

1.26 

2.  08 

3.94 

5.48 

0.  69 

0.  11 

1 

101. 00 

2.  76 

B3.  IV 

1.116 

.169 

.020 

.018 

.052 

.070 

.098 

.007 

RANG  4.  DOCALCIC. 


i 

63.  77 

19. 13 

1.  66 

1. 15 

4.  29 

5.  63 

2.  20 

0.  99 

0.  60 

0. 14 

0.17 

0.02 

0.  20 

99.  95 

A2.  II 

1.063 

.187 

.010 

.017 

.107 

.101 

.035 

.010 

.002 

— 

.003 

2 

63.  09 

18.  89 

3.  48 

2.02 

1.97 

6. 18 

3. 14 

1.30 

0.  63 

# 

100.  70 

A3.  Ill 

1.052 

.185 

.022 

.028 

.049 

.110 

.051 

.015 

CLASS  I.  PERSALANE. 

RANG  1.  PERALKALIC.  NORDMARKASE. 


1 

65.43 

16. 11 

1.15 

2.  85 

0.40 

1.49 

5.00 

5. 97 

0.  39 

0. 19 

trace? 

0.50 

0.13 

0.  23 

0.  03 

100. 18 

Al.  I 

1.091 

.158 

.009 

.039 

.010 

.027 

.081 

.064 

.006 

.001 

.003 

— 

2 

64.  88 

16.  24 

1.37 

2.  70 

0.  89 

1.92 

5.  00 

5.61 

0.46 

0.19 

none 

0.  69 

0. 13 

0. 14 

0.  06 

100. 53 

Al.  I 

1.081 

.159 

.008 

.038 

.022 

.034 

.081 

.060 

.008 

.001 

.002 

— 

3 

63.  71 

18.30 

2.08 

2.  52 

0.  09 

1.  18 

6.39 

6.21 

0.17 

0.  09 

trace 

trace 

100.  74 

A3.  Ill 

1.062 

.180 

.013 

.035 

.002 

.021 

.103 

.065 

_ 

— 

4 

61.05 

18.81 

2.  02 

3.  06 

0.  42 

1.30 

6.  56 

6.  02 

0.  78 

0.  34 

trace 

none 

100. 04 

2.  655 

A2.  II 

1.018 

.183 

.013 

.043 

.011 

.023 

.106 

.064 

.004 

— 

— 

12° 

PERSALANE - PHLEGROSE. 


193 


ORDER  4.  QUARDOFELIC.  BRITANNARE— Continued. 

SUBRaNG  4.  DOSODIC.  YELLOWSTONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cl  0. 01 

Q  20.3 
or  9.5 
ab  27. 2 
an  27. 0 

di  2.0 
hy  2.8 
mt  1.4 
il  1.7 
hm2. 5 

Spasmeno  Vouno, 
Aegina,  Greece. 

A.  Rohrig. 

H.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Hornblende- 

andesite. 

Not  fresh. 

• 

Q  25.0 
or  16. 7 
ab  30. 4 
ail  16. 4 

C  3.7 

hy  4.8 
mt  2. 1 

Kalko,  n.  Bio,  Cau¬ 
casus  Mountains. 

Makerow. 

Loewinson-Lessing, 
cf.  N.  J.,  1899,  II, 
p.  237. 

Dacite. 

Sum  incorrectly 
given. 

Sol.  salts  1.34 

Q  29.9 
or  11.1 
ab  33. 5 
an  15. 6 

C  1.6 

hy  2.7 
mt  1.2 
il  1.5 
hm  1. 7 

Eruption  of  1883, 
Krakatoa. 

C.  Winkler. 

R.  D.  M.  Verbeek, 
Krakatau, 
p.  292,  1884. 

Andesite-pum¬ 

ice. 

Q  26.1 
or  11.1 
ab  29. 9 
an  23. 1 

di  1.9 
hy  5.2 
mt  1.9 

Moruva,  New  South 
Wales. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 
XVI,  p.  42,  1883. 

Granite. 

SUBRANG  5.  PERSODIC.  AMADOROSE. 


FeS2  trace? 

Q  27.3  hy  3.3 

Tuolumne  River, 

W.  F.  Hi  lie- 

H.  W.  Turner, 

Quartz-diorite- 

NiO  none 

SrO  0. 05 

or  3.  9  mt  0. 2 
ab41.4  il  0.5 

Amador  County, 

brand. 

17  A.  IL  P.S.G.S.,  I, 

aplite. 

Li.,0  none 

an  22. 5 

California. 

702,  1896. 

C  0.5 

S  trace 

Q.  32.6  hy  5.2 

Average  sample, 

J.  B.  Harrison. 

J.  B.  Harrison, 

Porphyrite. 

Dried  at  110°. 

or  1. 1  mt  0. 2 
ab38.8  il  0.8 

Potaro  River,  Brit- 

Rep.  G.  Esseq.  River, 

an  17.0 

ish  Guiana. 

p.  52,  1900. 

C  2.6 

Q  31.2  hy  5.2 

Saganaga  Lake,  Min- 

A.  D.  Meeds. 

V.  S.  Grant,  21  A.  R. 

Granite. 

or  3. 9 
ab  36. 2 

nesota. 

G.  Nh.  S.  Minn., 

an  16. 7 

p.  43,  1893. 

C  6.4 

Q  18.0  di  1.2 

Cristallina  Thai,  St. 

Grubenmann 

U.  G.  Grubenmann, 

Granite. 

or  3.9  hy  4.6 
ab  51. 4  mt  4. 6 

Gotthard,  Switzer- 

and  Ander- 

Mt.Thurg.  Nf.  Ges.,  X, 

an  17. 8 

land. 

wert. 

p.  17,  1892. 

SUBRANG  3.  TRESODIC. 


FeS2  trace 

CuS2  trace 

Q,  28.6 
or  6.1 
ab  18. 3 
an  28. 1 

C  4.1 

hyll.O 
mt  2.3 

Essequibo  River, 
British  Guiana. 

• 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Ess.  River, 
p.  34,  1900. 

Hornblende- 

granitite- 

gneiss. 

Dried  at  110°. 
Near  bandose. 

Q  22.9 
or  8.3 
ab  26. 7 
an  30. 6 

C  0.9 

hy  5.8 
mt  5.1 

Wistra,  Carinthia, 
Austria. 

H.  Krczmar. 

• 

F.  B6cke. 

T.  M.  P.  M.,  XVIII, 
p.  94,  1899. 

Tonalite-gneiss. 

ORDER  5.  PERFELIC.  CANADARE. 

SUBRANG  3.  SODIPOTASSIC.  PHLEGROSE. 


ZrO.> 

Cl 

F 

FeS2 

0. 11 

0.05 

0.08 

0. 07 

Q  8.8 
or  35. 6 
ab  42. 4 
an  3.6 

di  3.4 
hy  2.  4 
mt  2. 1 
il  0.9 

Mount  Aseutney, 
Vermont. 

W.  F.  Hille- 
brand. 

ZrO> 

Cl 

F 

FeSo 

NiO 

0. 13 

0.04 

0.08 

none 

none 

Q  8.3 
or  33.  4 
ab  42. 4 
an  5. 0 

di  3.7 
hy  3.2 
mt  2. 6 
il  1.2 

Mount  Ascutnev, 
Vermont. 

W.  F.  Hille- 
brand. 

Q  0.4 
or  36. 1 
ab  54.0 
an  3.3 

di  1.2 
hy  2.0 
mt  3. 0 

Salem  Neck,  Essex 
County,  Massachu¬ 
setts. 

H.  S.  Washing- 
ton. 

or  35. 6 
ab  47. 2 
an  3. 6 
ne  4.5 

di  2.4 
ol  3.0 
mt  3.0 

Coney  Island,  Salem 
Harbor,  Massachu¬ 
setts. 

H.  S.  Washing¬ 
ton. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  68,  1897. 

R.  A.  Dalv, 

B.  IJ.  S.  G.  S.,  148, 
p  69,  1897. 

H.  S.  Washington, 

J.  G.,  VI,  p.  806, 

1898. 

II.  S.  Washington, 

J.  G.,  VII,  p.  118, 

1899. 


14128— No.  14—03 - 13 


Syenite. 


Syenite-po  r- 
phyry. 


H  e  d  r  u  m  i  t  i  c 
pulaskite. 

Sblvsbergite. 


Dried  at  110°. 
Near  nordmark- 
ose.  Cf.No.  3. 


194 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS, 


CLASS  I.  PERSALAXE — Continued. 
RANG  1.  PERALKALIC.  NORDMARKASE — Continued. 


No. 

Si02 

Al-iOj 

Fe2Os 

FeO 

MgO 

CaO 

Xa2<) 

k2o 

II, 0+ 

H,0— 

co2 

TiOa 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

5 

60. 13 

20.  05 

2. 36 

1.33 

0.  76 

0.  87 

6.  30 

5.97 

1.41 

0. 16 

none 

1. 15 

0.  06 

trace 

100.  72 

A1  I 

1.002 

.196 

.015 

.018 

.019 

.016 

.101 

.  064 

.014 

— 

— 

6 

59.  70 

18.  85 

4.  85 

n.  d. 

0.  68 

1.34 

6.  29 

5.  97 

1.88 

99.  56 

A4  IV 

.995 

.185 

.030 

(.060) 

.017 

.024 

.101 

.064 

7 

66.  03 

18. 49 

2. 18 

0.  22 

0.  39 

0.  96 

5.22 

5.86 

0.  85 

trace 

0.  04 

trace 

100.  24 

A3.  Ill 

1.101 

.181 

.014 

.003 

.010 

.017 

.084 

.063 

— 

— 

8 

66. 55 

16. 35 

4.  00 

n.  d. 

0.  38 

1.34 

5.40 

4.97 

0.  40 

0.  66 

100.  05 

A3  III 

1.109 

.  160 

.  025 

(.050) 

.010 

.024 

.087 

.054 

.008 

9 

68.01 

17.48 

0.  41 

n.  d. 

.046 

trace 

5.  77 

7.08 

0.  73 

ft 

99.  94 

2.60 

A3.  Ill 

1. 134 

.171 

.003 

(.  006) 

.012 

— 

.093 

.075 

10 

66. 13 

17.  40 

2. 19 

n.  d. 

0.  04 

0.81 

5.  28 

5.  60 

1.22 

0.  74 

0.13 

99.  54 

A3  III 

1.102 

171 

.014 

(.028) 

.001 

.014 

.085 

.060 

.009 

.002 

11 

64.  04 

ft 

17.92 

0.  96 

2.  08 

0.59 

1.00 

6.  67 

6.  08 

1.  18 

0.  62 

0.  23 

101.37 

2.646 

B2  III 

1.067 

.  176 

.006 

.029 

.015 

.018 

.108 

.  065 

.008 

.003 

12 

62.  30 

17.  05 

1.30 

0.  57 

1.20 

5.  14 

6. 18 

0.  45 

2.  65 

trace 

trace 

99.  73 

A3.  Ill 

1,038 

.167 

.008 

.034 

.014 

.021 

.083 

.066 

— 

13 

59.  24 

18.  97 

‘4  *>n 

1.2Q 

0. 12 

2.  06 

4.87 

9. 14 

0.  86 

0.  47 

100. 34 

2.  509 

.021 

2.36 

trace 

A2.  11 

14 

.987 

61.62 

.186 

18.  24 

.017 

1.28 

.003 

0.  56 

.  037 

1.44 

.079 

5.  77 

.099 

7.  60 

0.  78 

.006 

0.  87 

100.  67 
.03 

A 2  II 

15 

1.027 

61.88 

.179 

18.  21 

.015 

2. 19 

.018 

1.38 

.014 

0.  61 

.026 

1. 15 

.  093 

6.  89 

.  081 

• 

6.  72 

0.  37 

.011 

0.  69 

trace 

100.64 

100.  39 
.07 

A  2.  II 

16 

1.031 

60.  33 

.178 

18.  74 

.014 

2.84 

.019 

1.  29 

.015 

0.  38 

.  021 

1. 15 

.ill 

7.  15 

.071 

7.  30 

0.  56 

.009 

trace 

trace 

100.32 

100. 17 
.11 

A3.  Ill 

1.006 

.184 

.018 

.018 

.010 

.021 

.115 

.078 

* 

— 

— 

100. 06 

17 

59.  79 

19.  71 

2.95 

1.08 

0.36 

1. 19 

6.  79 

7.  10 

0.  24 

trace 

trace 

99.  74 
.  13 

A3.  Ill 

.997 

.193 

.018 

.015 

.009 

.021 

.110 

.076 

— " 

— 

99.61 

18 

61.  22 

18.01 

1.32 

4.51 

0.  44 

1.88 

6.  49 

5.  93 

0.  46 

.042 

trace 

100.  68 

2.  210 

A2.  11 

1.020 

.177 

.008 

.063 

.011 

.034 

.105 

.063 

.005 

— 

RANG 

1.  PERALKALIC 

NORDMARKASE. 

t 

1 

60. 39 

22.  57 

0.  42 

2.  26 

0. 13 

0.  32 

8.  44 

4.77 

0.57 

trace 

0.  08 

99.  95 

A3.  Ill 

1.007 

.221 

.003 

.031 

.003 

.006 

.136 

.051 

.001 

o 

63. 09 

18.  44 

2.90 

1.36 

0. 16 

1.00 

7.  25 

5.  23 

0.  62 

0.  21 

0. 45 

trace 

100.  77 

A2.  II 

1.052 

.180 

.018 

.019 

.004 

.018 

.117 

.056 

.006 

— 

3 

60.  60 

18.  28 

2.  85 

2.  67 

0.  52 

0.  99 

6.  66 

5.  73 

0.  69 

0.  71 

0. 15 

99.85 

A  2.  II 

1.010 

179 

.018 

.037 

.013 

.018 

.107 

.061 

.009 

.001 

/ 


PERSALANE — NORDMAKKOSE. 


195 


ORDER  5.  PERFELIC.  CANADA  RE— Continued. 

SUBRANG  3.  SODIPOTASSIC.  PHLEGROSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ZrO 2 
so3 

0.05 

0.14 

or  35. 6 
ill)  40. 3 
an  4.4 
ne  2.  0 

C  1.5 

ol  1.4 
nit  0. 9 
il  2. 2 
hm  1.8 

Braddock’s  Quarry, 
Fourche  Mountains, 
Arkansas. 

H.  S.  Washing¬ 
ton. 

II.  S.  Washington, 

.1.  G.,  IX,  p.  610, 

1901. 

Foyaite. 

Cf.  No.  6. 

or  35. 6 
ab  12.4 
an  5.3 
ne  5. 7 

di  1.3 
ol  6. 9 

Braddock’s  Quarry, 
Fourche  Mountains, 
Arkansas. 

W.  A.  Noyes. 

.1.  F.  Williams, 

A.  R.  ( i.  S.,  Ark., 

1890,  II,  p.  81,  1891. 

Nephelite-sven- 

ite. 

Ci.  No.  5. 

\ 

Q  10.5 
or  35. 0 
ab  44. 0 
an  4. 7 

C  1.7 

hy  1.0 
nit  0. 7 
hm  1.  8 

Game  Ridge,  Rosita 
Hills,  Colorado. 

L.  G.  Eakins. 

A*.  Cross, 

17  A.  R.  U.  S.G.S., 

II,  p.  824,  1896. 

Trachyte. 

Also  in  Pr.  Col. 
Sc.  Soe.,  II, 
p.  237,  1887. 

Q*  10. 1 
or  30. 0 
ab  45. 6 
an  4. 2 

di  1.6 
hv  5. 9 
il  1.2 

H vitus  Ivridhur, 
Sniiffelsjokull, 
Iceland. 

Backs  trbm. 

11.  Bilckstrom. 

G.  F.  F.,  XIII,  p.  659, 
1891. 

Liparite. 

Near  pulaskose. 

Q  6.5 
or  41. 7 
ab  48.  7 

C  0.3 

hy  2.1 

Good  wick, 

Pembrokeshire, 

Wales. 

F.  PI.  Tadman. 

F.  IL  C.  Reed 

G.J.  G.  S.,  i  Lp.  177, 
1895. 

Felsite. 

Q  11.5 
or  33. 4 
ab  44. 5 
an  2. 8 

C  1.6 

hv  2.7 
il*  1.4 

Between  Thinghoud 
and  Fjelebua,  Nor¬ 
way. 

R.  Mauzelius. 

W.  C.  B bigger, 

Z.  K. ,  XVI,  p.  46, 

1890. 

Akerite. 

or  36. 1 
ab  54. 5 
an  0.8 
ne  1.1 

di  3. 6 
ol  1.4 
nit  1.4 
il  1.2 

Tonsenas,  n.  Chris¬ 
tiania,  Norway. 

P.  Jannasch. 

O.  Lang, 

Nyt.  Mag.,  XXX, 
p.  40,  1886. 

Nordmarkite. 

Also  in  W.  C. 
Brogger,  Z. 
K.,XVI,p.56, 
1890. 

Sum  high. 

FeS2 

0.43 

Q.  3.9 
or  36. 7 
ab  43. 5 
an  5.0 

di  0.  S 
hy  4. 5 
mt  1.9 

Gjefsen,  Gran,  Nor¬ 
way. 

L.  Schmelck. 

IV.  C.  Brogger, 

Eg.  Kg.  I,  p.  131, 

1894. 

Bostonite. 

• 

Not  fresh. 

S03 

0.10 

or  55. 0 
ab  25. 7 
a*i  2. 2 
ne  8. 5 

di  0. 7 
wo  3. 1 
mt  2.6 
il  0.9 
hm  1. 6 

West  of  Viterbo, 

Italy. 

H.  S.  Washing¬ 
ton. 

PI.  S.  Washington, 

J.  G.,  IV, 
p.  849, 1896. 

Phonolite. 

Dried  at  110°. 
Block  in  tuff. 

Cl 

0. 15 

or  45.0 
ab  41. 0 
an  1. 4 
ne  4.3 

di  3.1 
wo  0. 8 
mt  1.9 
il  1. 5 
hm  1. 1 

Monte  Rotaro, 

Ischia,  Italy. 

H.  S.  "Washing¬ 
ton. 

II.  S.  Washington, 

A.  J.  S.,  VIII, 
p.  289,  1899. 

Trachyte. 

Dried  at  110°. 

Cl 

0.30 

or  39. 5 
ab45. 6 
ne  1.4 
so  3. 9 

ac  1. 4 
di  3.3 
wo  0. 8 
mt  2.6 
il  1.4 

Marecocco,  Ischia, 
Italy. 

PI.  S.  Washing¬ 
ton. 

PI.  S.  Washington, 

A.  J.  S..  VIII, 
p.  289,  1899. 

Trachyte. 

Dried  at  110°. 

Cl 

0-43 

or  43. 4 
ab  36. 7 
ne  5. 1 
so  5. 9 

ac  1.4 
di  3.0 
wo  1.0 
mt  3.  5 

Monte  Nuovo, 
Phlegrean  Fields, 
Italy. 

H.  S.  Washing¬ 
ton. 

IP.  S.  Washington, 

A.  J.  S.,  VIII, 
p.  287,  1899. 

Trachyte. 

Dried  at  110°. 

Cl 

0.53 

or  42. 3 
ab37.  7 
an  5. 8 
ne  2.  8 
so  6. 8 

ol  0. 7 
mt  4. 1 

Monte  di  Cuma, 
Phlegrean  Fields, 
Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  VIII, 
p.  287,  1899. 

Trachyte. 

Dried  at  110°. 

or  35. 0 
ab  45. 6 
an  2. 5 
ne  5. 1 

di  6.1 
ol  3. 7 
mt  2.6 

Gough’s  Island, 

South  Atlantic. 

L.  V.  Pirsson. 

’ 

L.  V.  Pirsson, 

A.  J.  S.,  XLV, 
p.  382,  1893. 

Trachyte- 

obsidian. 

Near  nordmark- 
ose.  Almost 
in  germanare. 

* 

SUBRANG 

4.  DOSODIC.  NORDMAKKOSE. 

or  28. 4 
ab  52. 4 
an  1.  7 
ne  10.  2 

C  2.9 

ol  3.1 
mt  0.7 

Litchfield,  Maine. 

L.  G.  Eakins. 

W.  S.  Bayley, 

B.  G.  S.  A.',  Ill, 
p.  241,  1892. 

Litchfieldite. 

Zr02 

0.06 

or  31.1 
ab  59. 2 
an  2.0 
ne  1.1 

di  1.0 
wo  0. 8 
mt  3.  O 
il  0.9 
hm  0. 8 

Salem  Neck,  Essex 
County,  Massachu¬ 
setts. 

II.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.G.,  VI. 
p. 806, 1898. 

Pulaskite. 

or  33. 9 
ab  50.  3 
an  3. 3 
ne  3. 1 

di  1.4 
ol  1.4 
mt  4.2 
il  1.4 

Coney  Island,  Salem 
Harbor,  Massachu¬ 
setts. 

M.  Dittrich. 

II.  Rosenbusch, 
Elemente, 
p. 199, 1898. 

Syenite-por¬ 

phyry. 

Solvsbergite. 

Cf.  No.  4. 

196 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 


RANG  1.  PERALKALIC.  NORDMARKASE — Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

• 

Na20 

K20 

h20+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

4 

60.  05 

19. 97 

4.  32 

1.04 

0.  23 

0.91 

7.  69 

3.24 

1.26 

0. 15 

0. 11 

0.  79 

100.  04 

2.  708 

A2.  II 

1.001 

.196 

.027 

.014 

.005 

.016 

123 

.034 

.001 

.011 

5 

59.  31 

22.  50 

1.93 

1.40 

0.17 

0.  46 

7.98 

4.  08 

1. 12 

0. 15 

0.  32 

trace 

99. 42 

2.  599 

B2.  Ill 

.989 

.221 

.012 

.019 

.004 

.008 

.129 

.043 

.004 

— 

12° 

6 

59.  62 

18.  67 

5.07 

n.d. 

0.  84 

1.80 

6. 95 

5.  65 

•  0.  80 

99.  40 

B4.  V 

.994 

.185 

.032 

(.064) 

.021 

.032 

.112 

.061 

7 

67.  77 

17.57 

n.d. 

1.59 

0.  49 

0.51 

6.  20 

4.  56 

1.47 

0.  73 

100.  89 

B4.  V 

1.130 

.172 

— 

.022 

.012 

.009 

.  100 

.049 

' 

8 

61.08 

18.  71 

1.91 

0.  63 

0.  08 

1.58 

8.  68 

4.  63 

2.21 

0. 18 

n.  d. 

trace 

0.  05 

99.  86 

2.  582 

Al.  I 

1.018 

.185 

.012 

.009 

.002 

.028 

.140 

.049 

.002 

— 

— 

9 

66.  22 

16.  22 

1.98 

0. 16 

0.  77 

1.32 

6.  49 

5.  76 

0.  24 

0.  08 

0.  22 

0. 10 

trace 

0.  29 

99.  97 

Al.  I 

1.104 

.159 

.012 

.002 

.019 

.023 

.105 

.061 

.003 

.001 

— 

.002 

10 

64.  33 

17.  52 

3.  06 

0.94 

0.  34 

0.  56 

7.30 

4.28 

0.  95 

0.04 

trace 

trace 

0.  35 

99.  67 

A3.  Ill 

1.072 

.172 

.019 

.013 

.009 

.010 

.117 

.046 

- . 

.005 

n 

62.  17 

18.  58 

2. 15 

1.05 

0.  73 

1.57 

7. 56 

3.  88 

1.63 

0.  07 

trace 

0. 11 

trac 

99.  50 

A3.  Ill 

1.036 

.182 

.013 

.015 

.018 

.028 

.122 

.041 

_ 

.001 

— 

12 

63.  24 

17.  98 

2.  67 

0.  85 

0.  63 

0.  93 

6.  27 

5.  47 

0.  80 

0.  37 

none 

0.38 

0.22 

0.  04 

0.  25 

100. 14 

Al.  I 

1.054 

.176 

.017 

.012 

.016 

.016 

.101 

.059 

.005 

.002 

.001 

.002 

13 

65.  51 

16.  89 

1.41 

2.  52 

0.39 

1. 19 

6.  42 

5.02 

0. 16 

0.  92 

0. 07 

0.31 

100.  81 

A2.  II 

1.092 

.165 

'  .009 

.035 

.010 

.021 

.  103 

.054 

.011 

— 

.004 

14 

66.  50 

16.  25 

2. 04 

0. 19 

0.18 

0.  85 

7.52 

5.  53 

0.  50 

0.  70 

trace 

0.20 

100.  46 

A2.  II 

1.108 

.159 

.013 

.003 

.005 

.015 

121 

059 

.009 

— 

.003 

15 

64.  92 

16.  30 

3.  62 

0.  84 

0.  22 

1.20 

6.  62 

4.  98 

0.  50 

0.  40 

99.  60 

A3.  Ill 

1.082 

.160 

.023 

.012 

.006 

.021 

.107 

053 

.006 

16 

64.  54 

18. 13 

2.  63 

0.  97 

0.  67 

0.  62 

6.  60 

5.  99 

0.31 

trace 

trace 

trace 

0. 42 

100.  88 

A3.  Ill 

1.076 

.178 

.016 

.013 

.017 

.011 

107 

064 

— 

— 

— 

.003 

17 

63.  20 

17.  45 

3. 60 

n.  d. 

0.  75 

1.40 

6.  90 

5.  88 

0.  50 

0.  46 

100. 14 

A3.  Ill 

1.053 

.171 

.022 

(.038) 

.019 

.025 

.ill 

.  063 

.006 

18 

60. 1 1 

19.  01 

4.  63 

0.37 

0.  23 

0.  66 

6.53 

5.  36 

1.37 

0.84 

0. 96 

trace 

100.  07 

A  2.  11 

1.002 

.186 

.029 

.005 

.006 

.012 

.105 

.057 

.012 

— 

19 

63.  76 

17.37 

0.  10 

1.  11 

0.  93 

1.  72 

6.  69 

5.97 

0.  40 

none 

0.  70 

0. 16 

0.  37 

99.28 

B2  III 

1.063 

.170 

.001 

.015 

.023 

.030 

.108 

.064 

.009 

.001 

.005 

20 

63.  61 

16.  34 

4.30 

2.  08 

0.  37 

1.42 

6.  21 

5.  54 

0.  77 

trace 

100.  82 

A3.  Ill 

1.060 

.160 

.027 

.030 

.009 

.025 

.100 

.  059 

— 

21 

62.  04 

17.44 

4.  22 

0.36 

1.88 

0.57 

6.  31 

4.  20 

1.63 

0.  71 

0.  37 

99.  85 

2.  620 

A2.  II 

1.034 

.171 

.026 

.005 

.047 

.010 

.101 

.045 

.009 

.002 

22 

63.  74 

17.  86 

4.  27 

0.  30 

0. 10 

0.  83 

7.23 

5.  19 

0.  83 

trace 

0. 19 

100.  54 

A3.  Ill 

1.062 

.175 

.027 

.004 

.003 

.015 

.117 

.056 

— 

.003 

PERSALANE - NORDMARKOSE. 


W 


ORDER  5.  PERFELIC.  CANA  DARE— Continued. 


SUBRANG  4  DOSODIC.  NORDMARKOSE — Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cl 

0.28 

Q  1.3 
or  18.9 
ati  (i  t.  5 
an  4.4 

C  2.3 

hy  0.6 
mt  3.2 
hm  2. 0 

.Gale’s  Point,  Essex 
County,  Massachu¬ 
setts. 

A.  S.  Eakle. 

A.  S.  Eakle, 

A.  J.  S.,  VI, 
p.  491,  1898. 

Biotite-tingua- 

ite. 

Not  fresh. 

or  23. 9 
ab  59. 2 
an  2.2 

C  4.2 

ol  1.1 
mt  2. 8 
il  0.6 

Great  Haste  Island, 
Salem  Harbor, 
Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 
J.G.,VI, 
p.  803, 1898. 

Foyaite. 

• 

or  33. 9 
ab  40. 3 
an  3.3 
ne  9. 9 

di  4. 6 
ol  6.3 

Saline  County, 
Arkansas. 

W.  A.  Noyes. 

J.  F.  Williams, 

A.  R.  G.  S.,  Ark.,  1890, 
11,135,1891. 

Nephelite-syen- 

ite. 

Q  11.0 
or  27. 2 
ab  52. 4 
an  2. 5 

C  1.4 

hy  4.1 

Ulster  Mine,  Preston, 
Black  Hills,  South 
Dakota. 

Flintermann. 

J.  D.  Irving, 

A.  N.  Y.  Ac.  Sc.,  XII, 
p.  277, 1899. 

Quartz-por¬ 

phyry. 

Cl 

0.12 

or  27. 2 
ab  54. 0 
an  1. 1 
ne  10. 5 

di  0. 4 
wo  2. 5 
mt  2.1 
il  0.3 

Devil’s  Tower,  Black 
Hills,  South  Dakota. 

L.  V.  Pirsson. 

L.  V.  Pirsson, 

A.  J.  S.,  XLVII, 
p.  344,  1894. 

Phonolite. 

so3 

Cl 

F 

SrO 

Li20 

0.02 

0.04 

trace 

0. 06 
trace 

Q  5. 3 
or  33. 9 
ab  51.  9 

ac  2. 8 
di  1.4 
wo  1. 6 
il  0.3 
hm  1.0 

Gray  Butte,  Bearpaw 
Mountains,  Mon¬ 
tana. 

PI.  N.  Stokes. 

Weed  and  Pirsson, 

A.  J.  S.,  I, 
p.  295,  1896. 

Quartz-syenite- 

porphyry. 

Q  3.9 
or  25. 6 
ab  61.3 
an  2.8 

hy  0.9 
mt  3.0 
hm  1. 0 

Sixteen-mile  Creek, 
Crazy  Mountains, 
Montana. 

W.  H.  Melville. 

Wolff  and  Tarr, 

B.  M.  C.  Z.,  XVI, 
p.  232,  1893. 

A  cmite- tra¬ 
chyte. 

Q  0.6 
or  22. 8 
ab  63. 8 
an  5.3 

di  2.0 
hy  1.1 
mt  3.2 

North  part  of  Crazy 
Mountains,  Mon¬ 
tana. 

W.  H.  Melville. 

Wolff  and  Tarr, 

B.  M.  C.  Z.,  XVI, 
p.  232,  1893. 

Acmite-tra- 

chyte. 

ZrOo 

S 

Cr203 

v«o3 

SrO 

trace 

trace 

none 

0. 01 

0. 03 

Q  2.8 
or  32.8 
ab  52. 9 
an  4.4 

hy  1.6 
mt  1.6 
il  0.8 
hm  1.6 

Dike  Mountain,  Yel¬ 
lowstone  National 
Park. 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  98,  1900. 

Biotite-tra- 

chyte. 

• 

Q  5.8 
or  30.0 
ab  54. 0 
an  2.2 

di  3.6 
hy  1.6 
mt  2. 1 
il  1.7 

San  Mateo  Mountain, 
Mount  Taylor  re¬ 
gion,  New  Mexico. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  185,  1897. 

Andesite. 

Q  4.7 
or  32. 8 
ab  52. 4 

ac  6. 0 
ns  1.0 
di  1.1 
wo  0. 4 
il  0.5 
tn  1.2 

Kvelle  Kerke,  Lau- 
gendal,  Norway. 

V.  Schmelck. 

W.  C.  B rugger, 

Eg.  Kg.,  Ill, 
p.  216,  1898. 

Lestiwarite. 

Q  5. 7 
or  29. 5 
ab  56. 1 

di  1.3 
wo  1.8 
mt  2.8 
hm  1.8 

Solvsberget,  Gran, 
Norway. 

L.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  I,  p.78,  1894. 

Solvsbergite. 

Q  0.9 
or  35. 6 
ab  56. 1 
an  2.0 

di  0.9 
hy  1.3 
mt  3. 6 

Lovas  Bay,  Farris, 
Norway. 

P.  Schei. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  198,  1899. 

Pulaskite. 

or  35. 0 
ab  48. 2 
ne  5. 4 

ac  1.4 
di  5.9 
ol  2.4 
il  0.9 

Tonsenas,  n.  Chris¬ 
tiania,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K.,XVl,p.  54,1890. 

Nordmarkite. 

or  31. 7 
ab  55. 0 
an  3.2 

C  1.2 

hy  0.6 
il  0.8 
hm  4. 6 

Hedrum,  Laugendal, 
Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  203,  1899. 

Bostonite. 

or  35. 6 
ab  52. 4 
ne  2.0 

ac  0. 5 
di  6.7 
il  1.2 

Ahvenvaara,  Kuus- 
amo,  Finland. 

N.  Sahlbom. 

V.  Hackmann, 

B.  C.  G.,  I,  Finl,  II, 
p.  35,  1900. 

Pyroxene-syen¬ 

ite. 

Cl 

0. 18 

Q  6.4 
or  32. 8 
ab  47. 2 
an  0.8 

di  2. 7 
wo  1.5 
mt  6.3 

Kiihlsbrunnen,  Sie- 
bengebirge,  Rhen¬ 
ish  Prussia. 

W.  Bruhns. 

W.  Bruhns, 

Vh.  Nh.  Ver.  Bonn, 
LIII,  p.  44,  1896. 

.Egi  rite-tra¬ 
chyte. 

so3 

0. 12 

Q  5.5 
or  25. 0 
ab  52. 9 
an  2.8 

C  1.5 

hy  4.7 
il  1.2 
hm  4. 2 

Near  Rothe  Miihle, 
Thuringerwald, 
Germany. 

Hampe. 

H.  Loretz, 

Jb.  Pr.  G.L-A.  (1888), 
p.  300,  1889. 

Biotite-por- 

phyrite. 

SOs  for  S. 

Q  0.2 
or  31.1 
ab  61.3 
an  0. 6 

di  0.7 
wo  1. 2 
mt  0. 9 
hm  3. 7 

Edda  Gijorgis,  Abys¬ 
sinia. 

G.  T.  Prior. 

G.  T.  Prior, 

Min.  Mag.,  XII, 
p.  266,  1900. 

Solvsbergite. 

. 

198 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 

RANG  1.  PERALKALIC.  NORDMARKASE. 


No. 

SiOj 

A1A 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

PA  MnO 

BaO 

Q 

Sum 

Sp.  gr. 

1 

67.  53 

18. 57 

1. 13 

0. 08 

0.  24 

0.  55 

11.50 

0. 10 

0.  31 

0. 15 

0.  07 

0.11  trace 

100.34 

A2.  II 

3.126 

.182 

.007 

.001 

.000 

.010 

.185 

.001 

.001 

.001  — 

2 

63.  01 

18.  48 

0.  06 

0.32 

0.  06 

2.  66 

10.01 

0.  39 

0.  27 

0.05 

2.01 

0. 13 

0.  06  0.  06 

0.  02 

99.  69 

Al.  I 

1.050 

.181 

— 

.004 

.002 

.048 

.161 

.004 

• 

.002 

—  .001 

— 

3 

62.  53 

18.  72 

3.  26 

0.  34 

0.  08 

0.  54 

11.  77 

0.  79 

0.  68 

0.  16 

99.  95 

2.  699 

A3.  Ill 

1. 012 

.184 

.  020 

.005 

.002 

.010 

.190 

.008 

.002 

RANG  2.  DOMALKALIC.  PULASKASE. 


1 

58.  21 

19.  90 

4.07 

0.  87 

0.  98 

3.58 

2.  57 

9. 17 

0.  74 

— 

trace 

100.  09 

A3.  Ill 

.970 

.195 

.  025 

.012 

.025 

.064 

.041 

.098 

2 

57.  32 

19.85 

2.  21 

2.  35 

1.60 

3.  82 

3.  22 

9. 15 

0.  57 

100. 09 

2.  611 

A3.  Ill 

.  955 

.  195 

.014 

.033 

.  040 

.068 

.052 

.097 

3 

55. 17 

20. 49 

3.  27 

2.  74 

1.58 

3.  73 

2.  27 

9.  58 

0.  99 

trace 

99.  82 

A3.  Ill 

.  920 

.201 

.020 

.038 

.040 

.066 

.037 

.105 

— 

• 

4 

66.  25 

18.  74 

1.36 

n.  d. 

0. 50 

1.23 

3.  04 

8.  80 

0.  22 

100. 14 

A3.  Ill 

1.104 

.183 

.009 

(.018) 

.013 

.022 

.051 

.094 

' 

RANG  2.  DOMALKALIC.  PULASKASE. 


1 

60.  75 

19.  68 

1.54 

2.  98 

0.  81 

2.  29 

4.89 

5.90 

0.08 

0.  24 

0.  63 

trace 

trace 

99.  79 

A2.  II 

1.013 

.193 

.010 

.041 

.020 

.041 

.079 

.063 

.008 

— - 

— 

2 

62.  28 

19. 17 

3.39 

n.  d. 

Trace. 

1.44 

5.  37 

5.93 

2.  33 

99.91 

2.  648 

A4.  IV 

1.038 

.188 

.021 

(.042) 

— 

.026 

.087 

.063 

l 

3 

65.  65 

16.  84 

n.  d. 

4.01 

0. 13 

2.47 

5.  27 

5.04 

0.  30 

99.  71 

• 

A4.  IV 

1.094 

.165 

— 

.056 

.003 

.045 

.085 

.054 

4 

63.  45 

18.  31 

0.42 

3.  56 

0.  35 

2.  93 

5.06 

5. 15 

0.  30 

0.  07 

trace 

none 

0. 13 

99.  73 

2.  717 

A2.  II 

1.058 

.179 

.003 

.050 

.009 

.051 

.081 

.056 

.001 

— 

— 

.001 

20° 

5 

60.  20 

20.  40 

1.  74 

1.88 

1.04 

2.00 

6.  30 

6.  07 

0.  23 

0. 10 

none 

0. 14 

0.  15 

trace 

100.  47 

Al.  I 

1.003 

.200 

.011 

.026 

.026 

.036 

.102 

.065 

.002 

.001 

— 

6 

60. 03. 

20.  76 

4.01 

0.  75 

0.  80 

2.  62 

5.  96 

5. 48 

0.  53 

0.  06 

0. 07 

trace 

101.  07 

2.  656 

B2.  Ill 

1.001 

.203 

.031 

.011 

.020 

.047 

.096 

.059 

— 

— 

7 

59.  23 

19.98 

4.  72 

n.  d. 

1.  10 

2.  41 

5.  47 

5.  76 

1.38 

100.  05 

2.  521 

A4.  IV 

.971 

.196 

.030 

(.060) 

.028 

.043 

.089 

.062 

8 

65.  54 

17.81 

0.  74 

1. 15 

0.  98 

1.92 

5.  55 

5.  58 

0.  54 

0. 11 

trace 

99.  92 

A2.  II 

1.092 

.  175 

.005 

.016 

.  025 

.034 

.090 

.059 

.001 

— 

9 

57.18 

:  18.54 

3.  65 

1. 15 

0.69 

2.31 

4.  48 

8.  58 

2. 10 

0.  30 

0.  05 

trace 

0.49 

100. 35 
.17 

V 

Al.  I 

i  .  953 

1  . 182 

.023 

.016 

1  .017 

.041 

.  072 

.091 

.004 

.003 

100.18 

PERSALANE - PIJLASKOSE. 


199 


ORDER  5.  PERFELIO.  CANADARE— Continued. 
SUBRANG  5.  PERIODIC.  TUOLUMNOSE 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO 

trace 

or  0.6 
ab  95. 4 

ac  1.4 
<li  1.3 
wo  0.5 
mt  0.2 
hm0.5 

Moccasin  Creek,  Tuo¬ 
lumne  County,  Cal¬ 
ifornia. 

H.  N.  Stokes. 

H.  W.  Turner, 

17  A.  R.  U.S.G.  S.,I, 
p.  727.  1896. 

Soda-svenite- 

porphyry. 

FeS« 

SrO" 

Li«0 

2.10 

trace 

none 

or  2. 2 
ab  83. 3 
an  4.4 
ne  0.6 

di  1.2 
wo  3.1 
il  0.3 
pr  2. 1 

Treadwell  mine, 
Douglas  Island, 
Alaska. 

W.  F.  Hille- 
brand. 

G.  F.  Becker, 

18  A.  R.  U.  S.  G.S.,  III, 
p.  39,  1888. 

Soda-syenite. 

Not  fresh. 

Zr02 

1.08 

or  4.4 
ab  74. 4 
ne  9.7 

Z  1.5 

ac  6. 5 
di  0.4 
wo  1.0 
mt  1. 2 

Mariupol,  Sea  of 

Azof,  Russia. 

J.  Morozewicz. 

J.  Morozewicz, 

T.  M.  P.  M.,  XXI, 
p.  241,  1902. 

Mariupolite 
(nephelite- 
syenite) . 

Not  average 
sample.  Too 
little  nephe- 
lite. 

SUBRANG  2.  DOPOTASSIC. 

VULSINOSE. 

or  54.5 
ab  21. 5 
an  15. 6 

di  1.8 
ol  1.2 
mt  2.8 
■  hm  2. 0 

Bolsena,  n.  Orvieto, 
Italy. 

H.  S.  Washing¬ 
ton. 

II.  S.  Washington, 

J.  G„  IV, 
p.  552,  1896. 

Vulsinite. 

or  53. 9 
ab  14-  7 
an  12. 8 
ne  6.8 

di  5.0 
ol  2.9 
mt  3.2 

Vetralla,  n.  Viterbo, 
Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  dV, 
p.  849,  1896. 

Yulsinite. 

Dried  at  110°. 

or  58. 4 
ab  7.3 
an  16. 4 
ne  6. 5 

di  1.6 
ol  4.1 
mt  4.6 

San  Rocco,  Mte.Vico, 
n.  Viterbo,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  V, 
p.  370,  1897. 

Leucite-tra- 

chyte. 

Q  9. 6 
or  52. 3 
ab  26. 7 
an  6. 1 

C  1.6 

hy  3. 6 

Rio  Pardo,  Serra  de 
Caldas,  Brazil. 

E.  Hussak. 

E.  Hussak, 

N.  J.,  1900,  d, 
p.  25. 

Leucite-granite- 

porphyry. 

Near  S.  R.  2  of 
syenase. 
Recalc,  from  2 
partial  anals. 

SUBRANG 

3.  SODIPOTASSIC. 

PULASKOSE. 

Q  2.2 
or  35. 0 
ab41.4 
an  11. 4 

di  4. 9 
mt  2. 3 
il  1. 2 

Mount  Belknap,  New 
Hampshire. 

Id.  S.  Washing¬ 
ton. 

H.  S.  AVashington, 
private  contribution. 

Syenite. 

Q  2.7 
or  35. 0 
ab45. 6 
an  7.2 

C  1.2 

hy  5.5 

Nash’s  Point,  Bur¬ 
lington,  Vermont. 

J.  F.  Kemp. 

Kemp  and  Marsters, 

B.  U.  S.  <1.  S.  107, 
p.  20,  1893. 

Bostonite. 

Q  7.8 
or  SO.  0 
ab  44. 5 
an  7.2 

di  4.6 
hy  5.3 

Harrisville,  Adiron¬ 
dack  Mountains, 
New  York. 

C.  Id.  Smyth,  jr. 

C.  H.  Smyth,  jr., 

B.  G.  S.  A.,  \Td, 
p.  274,  1895. 

Gabbro. 

Q  5.2 
<.r  31.1 
ab  42. 4 
an  11. 7 

di  2.2 
hy  6.0 
mt  0. 7 

Loon  Lake,  Franklin 
County,  New  York. 

E.  W.  Morlev. 

II.  P.  Cushing, 

B.  G.  S.  A.,  X, 
p.  183,  1899. 

Augite-syenitg. 

ZrO« 

S03‘ 

Cl 

s 

trace 

0.13 

0.09 

none 

or  36. 1 
ab41.9 
an  9.2 
ne  6.2 

di  0.8 
ol  3.1 
mt  2.6 
il  0.3 

Fourche  Mountain, 
n.  Little  Rock,  Ar¬ 
kansas. 

Id.  S.  Washing¬ 
ton. 

II.  S.  AVashington, 

J.  G.,  IX, 
p.  609,  1901. 

Pulaskite. 

or  32. 8 
ab  45. 6 
an  13. 3 
ne  2.6 

ol  1.4 
mt  2.6 
hm  3. 2 

Fourche  Mountain, 
n.  Little  Rock,  Ar¬ 
kansas. 

R.  N.  Brackett. 

.T.  F.  AVilliams, 

A.  R.G.  S.  Ark.,  1890, 
II,  p.  70,  1890. 

Pulaskite. 

or  34. 5 
ab38.3 
an  12. 0 
ne  4.5 

ol  8.0 

Fourche  Mountain, 
n.  Little  Rock,  Ar¬ 
kansas. 

W.  A.  Noyes. 

J.  F.  Williams, 

A.  R.G.  S.,  Ark.,  1890, 
II,  p.  88,  1891. 

Nephelite-syen- 

ite. 

LUO 

trace 

Q  6.1 
or  32. 8 
ab  47. 2 
an  7.2 

di  1.9 
hy  3.1 
mt  1.2 

Highwood  Peak, 

High  wood  Moun¬ 
tains,  Montana. 

Pirsson  and 
Mitchell. 

AVeed  and  Pirsson, 

A.  J.  S„  I, 
p.  295,  1896. 

Quartz-syenite. 

so3 

Cl 

SrO 

0.06 

0.  77 
trace 

Q  5.1 
or  50. 6 
ab  14.7 
an  8.7 
so  11.0 

di  2.3 
hy  0. 6 
mt  2.8 
il  0.6 
hml.8 

South  Mountain, 
Highwood  Moun¬ 
tains,  Montana. 

Id.  W.  Foote. 

L.  \T.  Pirsson, 

B.  U.  S.  G.  S.  148, 
p.  152,  1897. 

Trachyte. 

• 

200 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 

RANG  2.  DOMALKALIC.  PULASKASE. 


No. 

Si02 

ai2o3 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

h2o- 

C"4 

o 

O 

Ti02 

p205 

MnO 

BaO 

Sum 

Sp.  gr. 

10 

56.  45 

20.  08 

1.31 

4.39 

0.63 

2. 14 

5.  61 

7.13 

1.51 

0.  26 

0.  29 

0. 13 

0.09 

100. 45 
.10 

A2.  II 

.941 

.197 

.008 

.061 

.016 

.038 

.090 

.  075 

.004 

.001 

.001 

100.35 

11 

60.  89 

17. 14 

3.  32 

0.95 

1. 16 

3.  58 

4.  54 

5.  71 

1.22 

0.  39 

0.  49 

0.  27 

0. 09 

99. 94 

A2.  II 

1.015 

.168 

.020 

.015 

.029 

.064 

.071 

.061 

.006 

,002 

.001 

12 

57.  73 

18.  93 

1.97 

1.92 

0.91 

2.  78 

5.  52 

6. 11 

2.  93 

0.  22 

0.  26 

0.  33 

0.  25 

0. 06 

0. 16 

100.  20 

Al.  I 

.962 

.185 

.013 

.027 

.023 

.050 

.089 

.065 

.004 

.002 

.001 

.001 

13 

65.41 

18.  78 

0.  94 

0.  72 

0. 16 

1.58 

5.91 

5.41 

1.38 

trace 

trace 

100.  29 

A3.  Ill 

1.090 

.184 

.006 

.010 

.004 

.029 

.095 

.058 

— 

— 

14 

62.  64 

17.82 

3.91 

0. 31 

0. 47 

3.  22 

4. 47 

4.  99 

0.  65 

0.  58 

0.  59 

0.  25 

0.04 

0.  28 

100.  37 

Al.  I 

1.044 

.175 

.024 

.004 

.012 

.057 

.072 

.054 

.007 

.002 

— 

.002 

15 

58. 94 

17. 19 

2.63 

1.98 

1.52 

4.  45 

4.  20 

3.  90 

4.  53 

0.  27 

0.  23 

0. 10 

99.  94 

A2.  II 

.982 

.169 

.016 

.028 

.038 

.079 

.068 

.041 

.003 

.002 

.001 

16 

62.  60 

18.  07 

2.  28 

2.  25 

1.  16 

2.  27 

5.49 

5.  22 

0.  50 

99.  84 

A3.  Ill 

1.043 

.177 

.014 

.031 

.029 

.041 

.089 

.056 

17 

64.69 

18.  34 

n.  d. 

3.  44 

0.50 

1.  72 

4.  61 

6.  46 

0.  24 

0.  31 

0. 18 

trace 

0.  09 

100.  58 

2.57 

A3.  Ill 

1.078 

.  180 

— 

.048 

.013 

.031 

.074 

.069 

.004 

.001 

— 

.001 

18 

62.  66 

17.  34 

0.54 

2. 16 

1.44 

3. 17 

4.  51 

6.  34 

1.66 

trace 

0.12 

99.  94 

A3.  Ill 

1.044 

.170 

.003 

.030 

.036 

.057 

.072 

.067 

— 

.002 

19 

59.46 

20.18 

4.17 

n.  d. 

0.  82 

2.  83 

5.13 

6.  65 

0.  55 

99.  79 

A4.  IV 

.991 

.198 

.026 

(.052) 

.021 

.050 

.082 

.071 

RANG  2.  DOMALKALIC.  PULASKASE. 


1 

58.  27 

23.  75 

1.86 

n.  d. 

trace 

1.89 

6.  90 

5. 17 

2.  30 

100. 14 

A3.  Ill 

.971 

.232 

.012 

(.024) 

— 

.034 

.ill 

.056 

*> 

64.  63 

18. 15 

3.05 

n.d. 

0.  50 

1.54 

5.80 

4.  79 

1.08 

1.00 

100.  54 

A4.IV 

1.077 

.  178 

.020 

(.  040) 

.013 

.028 

.093 

.051 

.014 

3 

59.25 

19.46 

n.d. 

5.08 

t  race 

2.  07 

7.39 

3.96 

2. 12 

0.  70 

100. 03 

A4.  IV 

.988 

.191 

— 

.071 

— 

.038 

.119 

.042 

4 

57.  21 

18.  67 

n.  d. 

3.41 

1. 10 

3.  07 

6.  62 

4.  92 

3.  61 

1.01 

99.  62 

A4.IV 

.954 

.183 

— 

.048 

.027 

.055 

.106 

.053 

5 

64.  40 

16.  90 

1.86 

1.37 

1. 13 

2.  60 

5.  79 

4.  56 

0.  39 

0. 16 

none 

0.23 

0.21 

none 

0.  27 

100. 10 

Al.  I 

1.073 

.166 

.012 

.019 

.027 

.047 

.093 

.049 

.003 

.001 

— 

.002 

6 

63.  07 

17.  47 

2.  09 

1.38 

1.44 

2.  27 

5.  77 

4.  59 

0.  43 

0.25 

none 

0.  38 

0. 18 

0.  03 

0.  32 

99.  84 

Al.  I 

1.051 

.171 

.013 

.019 

.036 

.041 

.093 

.049 

.005 

.001 

— 

.002 

7 

63.  49 

18.  40 

2.  44 

1.09 

0.  66 

2.  30 

5.  70 

4.  62 

1.04 

trace 

trace 

trace 

0. 16 

99.  90 

A3.  Ill 

1.068 

.180 

.015 

.015 

.017 

.041 

.092 

.049 

— 

.002 

8 

60.  98 

19.  09 

1.76 

1. 15 

0.  65 

3.  67 

6.  70 

3.53 

0.  44 

0.  48 

0.  52 

0.  36 

0. 10 

0. 15 

0. 43 

100.  29 

Al.  I 

1.016 

.187 

.011 

.016 

.016 

.066 

.108 

.037 

.005 

.001 

.002 

.003 

PERSALANE - LAURVIKOSE. 


201 


ORDER  5.  PERFELIC.  CANADA  RE — Continued. 

SUBRANG  3.  SODIPOTASSIC.  PULASKOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cl 

NiO 

0. 43 
trace 

or  41. 7 
ab  28. 3 
an  10. 6 
ne  3.4 
so  5. 9 

ol  6.1 
mt  1. 9 
il  0.6 

Square  Butte,  High- 
wood  Mountains, 
Montana. 

W.  H.  Mel¬ 
ville. 

Lindgren  and  Melville, 
A.  J.  S.,  XLV, 
p.  296,  1893. 

Sodalite-syen- 

ite. 

NiO 

0. 19 

Q  5.8 
or  33. 9 
ab  37. 2 
an  10. 0 

di  b.  1 
mt  2. 1 
il  0. 9 
hm  1. 8 

Stinkingwater  River, 
Yellowstone  Na¬ 
tional  Park. 

W.  H.  Mel¬ 
ville. 

J.  P.  Iddings, 

J.  G.,  Ill, 
p.  947,  1895. 

Quartz-bana- 

kite. 

Zr02 

Cr.,03 

v2o8 

SrO 

LLO 

trace 

trace 

0. 01 

0. 09 
trace 

or  36. 1 
ab  37. 7 
an  8.6 
ne  4.8 

di  4.  5 
ol  1.0 
mt  3.0 
il  0.6 

Dike  Mountain,  Yel¬ 
lowstone  National 
Park. 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  G.  S.  G.  S.  168, 
p.  98,  1900. 

Biotite-tra- 

chyte. 

Q  6.4 
or  32.2 
ab  49.8 
an  8. 1 

C  0.2 

hy  1.0 
mt  1.4 

Rosita  Hills,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

Pr.  Colo.  Sc.  Soc.,  II, 
p.  233,  1887. 

Trachyte. 

Also  in  17  A.  R. 
U.S.G.  S.,II, 
p.  324,  1896. 

ZrOo 

SrO" 

0. 08 

0. 07 

Q  10.2 
or  30. 0 
ab  37. 7 
an  13. 6 

di  1.8 
hy  0.4 
il  0.6 
hm  3. 9 

Bare  Hills,  Pike’s 
Peak,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  163,  1897. 

Andesite. 

Q  8.5 
or  22. 8 
ab  35. 6 
an  16. 7 

di  4. 4 
hy  3.8 
mt  3. 7 
il  0.5 

Pringle  Hill,  Rosita 
Hills,  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

17  A.  R.  U.S.  G.  S.,II, 
p.  324,1896. 

Andesite. 

Near  laurvikose. 

Q,  3.2 
or  31.1 
ab  46. 6 
an  .8.9 

di  2.1 
hy  4.2 
mt  3. 2 

Ullernas,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  49,  1890. 

Akerite-por- 

phyry. 

Main  mass.  For 
border  cf.  No. 
6.  Salemose. 

so3 

Cl 

P 

none 

trace 

trace 

Q,  6.1 
or  38. 3 
ab  38'.  8 
an  8. 6 

C  0.6 

hv  7.0 
if  0.6 

Algersdorf,  Bohemia. 

F.  Ullik. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  IX, 
p.  247,  1888. 

Trachyte. 

Q  3.5 
or  37.  3 
ab  37. 7 
an  8. 6 

di  5. 9 
hy  4.2 
mt  0. 7 

Monte  Ciliano, 

Viterbo,  Italy. 

L.  Ricciardi. 

A.  Verri, 

B.  S.  G.  I tal.,  VIII, 
p.  403,  1889. 

Trachyte. 

or  39. 5 
ab  35. 1 
an  12. 0 
ne  4.3 

di  1. 7 
ol  6.0 

Rocov-Kamik, 
n.  Sofia,  Bulgaria. 

' 

L.  Dimitrow. 

L.  Dimitrow, 

Ds.  Wien.  Akad.,  LX, 
p.  497,  1893. 

Pyroxene- 

syenite. 

• 

SUBRANG  4.  DOSODIC.  LAURVIKOSE. 


- 

or  31. 1 
ab  43. 5 
an  9. 5 
ne  8.0 

C  3.2 

ol 

2.4 

Methuen  Township, 
Peterborough  Coun¬ 
ty,  Ontario. 

W.  G.  Miller. 

W.  G.  Miller, 

Rep.  Bur. Mines. Tor., 
VIII, pt.  2,  p.  207, 1899. 

Nephelite- 

syenite. 

Q  6.2 
or  28. 4 
ab48. 7 
an  7. 8 

C  0.6 

hy 

6. 6 

Fourche  Mountain, 
n.  Little  Rock,  Ar¬ 
kansas. 

R.  N.  Brackett. 

J.  F.  Williams, 

A.  R.  G.  S.  Ark.,  1890, 
II,  p.  96,  1891. 

Quartz-syenite. 

MnO  high. 

or  23. 4 
ab  51. 4 
an  8.3 
ne  6.0 

di 

ol 

2.1 

6.5 

Annie  (’reek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.  Sc., 
XII,  p.  272,  1899. 

Phonolite. 

or  29. 5 
ab  38. 3 
an  6. 7 
ne  9.4 

di 

ol 

7.4 

3.9 

Whitetail  Gulch, 

Black  Hills,  South 
Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.  Sc., 
XII,  p.  272,  1899. 

Phonolite. 

ZrO.i 

NiO 

SrO 

Li.,0 

0.02 

none 

0. 14 
trace 

Q  7.1 
or  27. 2 
ab  48. 7 
an  6.7 

di 

by 

mt 

il 

5.2 
0.8 
2.8 
0. 5 

Copper  Creek  Basin, 
Yellowstone  Na¬ 
tional  Park. 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.  168, 
p.  95,  1900. 

Augite-syenite- 

porphyry. 

ZrO., 

FeSo 

Cr.,d:! 

v?o3 

NiO 

SrO 

trace 

0. 02 
trace 
trace 
none 

0. 15 

Q  5.6 
or  27. 2 
ab  48. 7 
an  8.1 

di 

by 

mt 

il 

2.6 

2.4 

3.0 

0.8 

Copper  Creek  Basin, 
Yellowstone  Na¬ 
tional  Park. 

/ 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  IT.  S.  G.  S.  168, 
p.  95,  1900. 

Quartz-syenite. 

Q  7.0 
or  27. 2 
ab  48. 2 
an  10. 8 

hy 

mt 

1.7 

3.5 

Pringle  Hill,  Rosita 
Hills,  Colorado. 

W.  F.  Eakins. 

W.  Cross, 

Pr.  Colo.  Sc.  Soc. , 

II,  p.  250,  1887. 

Andesite. 

Also  in  17  A.  R. 
U.  S.  G.8.,11, 
p.  324,  1896. 

SrO 

Li..O 

1 

0.28 

trace 

Q  1.3 
or  20. 6 
ab  56. 6 
an  11.  7 

di 

wo 

mt 

il 

3.8 

1.0 

2.6 

0.8 

MountPennell,  Henry 
Mountains,  Utah. 

W.  F.  Hille- 
brand. 

W.  Cross, 

14  A.  R.  U.S.  G.  S., 

II,  p.  227,  1894. 

Augite-por- 

phyry. 

202 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSA LANE— Continued. 


RANG  2.  DOMaLKALIC.  PULASKASE— Continued. 


No. 

Si02 

AlA 

Fe,Os 

FeO 

MgO 

CaO 

Na.,0 

k2o 

H,0+ 

H20— 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

9 

62. 10 

18.02 

n.  d. 

3.  57 

0.  75 

2.  59 

6.  51 

4.  07 

1.99 

100.  62 

A4.  IV 

1.035 

.170 

— 

.050 

.019 

.047 

.105 

.043 

10 

56. 19 

20.  25 

2.  76 

2.  32 

1.  12 

4.  30 

6.  33 

4. 19 

0.  65 

0.  57 

0.  54 

99.  47 

2.674 

A2.II 

.937 

.198 

.017 

.032 

.  028 

.077 

.102 

.045 

.007 

.004 

11 

60.  45 

20.  14 

3.  80 

n.  d. 

1.27 

1.  68 

7  OQ 
t  .  Z.j 

5.  12 

0.71 

100. 40 

A4.  IV 

1.008 

.197 

.024 

(.048) 

.032 

.030 

.117 

.054 

12 

60.  72 

19.  90 

3.  56 

0.85 

1.25 

2.  75 

6.  24 

4.16 

0.  61 

100.  04 

A3.  Ill 

1.012 

.195 

.022 

.012 

.031 

.049 

.101 

.044 

13 

59.  38 

19.  35 

4.  97 

0. 13 

0.  91 

4.  36 

5. 15 

3.  88 

0.  90 

1.36 

0.  38 

100. 77 

A2.II 

.990 

.190 

.031 

.002 

.023 

.078 

.083 

.041 

• 

.017 

.  002 

14 

58.  82 

21.06 

3.  26 

0.  70 

1.38 

3.  03 

6.  83 

3.  70 

1.26 

100.  04 

A3.  Ill 

.930 

.207 

.  020* 

.010 

.  035 

.054 

.110 

.039 

15 

57.  59 

22.  38 

3.  09 

0.  78 

2.34 

3.  23 

6. 11 

3.  40 

0.  70 

99.  62 

A3.  Ill 

.900 

.220 

.019 

.011 

.059. 

.  058 

.099 

.036 

16 

57.  33 

20.  30 

4.  95 

1.  03 

1.93 

2.67 

6.  05 

4.  76 

0.  68 

99.  80 

A3.  Ill 

.  967 

.199 

.031 

.014 

.048 

.048 

.098 

.  C51 

17 

56.  85 

21.  56 

3.  44 

1. 14 

0.  85 

5.  26 

6. 07 

3.  66 

0.  52 

99.  35 

A3.  Ill 

.948 

.211 

.022 

.014 

.021 

.094 

.098 

.039 

18 

58.  88 

20.  30 

3.  63 

2.  58 

0.  79 

3.  03 

5.  73 

4.  50 

1.01 

0.54 

100.  99 

B3.  IV 

.9.31 

.199 

.023 

.036 

.020 

.054 

.092 

.048 

.004 

19 

57. 12 

21.  69 

1.63 

3.  65 

1. 55 

4.03 

5.93 

3.  48 

0.  58 

99.  66 

A3.  Ill 

.952 

.213 

.010 

.051 

.039 

.072 

.096 

.037 

20 

65.  01 

18.  27 

0.  84 

0.  83 

0.  80 

1.50 

6.  79 

4.34 

1.  74 

100. 12 

A3.  Ill 

1.083 

.179 

.005 

.011 

.020 

.027 

.110 

.046 

21 

61.  19 

21.24 

1.62 

n.  d. 

trace 

1.87 

6.  80 

5.97 

0.  93 

0.39 

100.  01 

K" 

HH 

■rf 

< 

1.020 

.210 

.010 

(.020) 

— 

.034 

.109 

.064 

.005 

22 

64.69 

17.  32 

1.23 

3.  01 

1.  54 

2.18 

6.  .36 

2.30 

2.09 

0.  44 

trace 

trace 

101.  16 

2.  65 

B2.  Ill 

1.078 

.170 

.007 

.  042 

.039 

.039 

.102 

.024 

.  006 

— 

— 

23 

55.  91 

19.  73 

2.  73 

1.36 

0.  75 

2.  39 

7.24 

2. 1.3 

4.  33 

1.89 

trace 

0. 18 

0.46 

99.41 

2.  471 

Bl.  II 

.  932 

.193 

.017 

.019 

.019 

.043 

.117 

.  022 

— 

.001 

.006 

24 

61.47 

18.09 

5.  14 

3.  06 

1.32 

3.  00 

5.  85 

2.  83 

n.  d. 

100.  76 

A3.  Ill 

1. 025 

.177 

.032 

.043 

.033 

.053 

.094 

.030 

25 

61.43 

17.51 

5.11 

2.30 

0.54 

• 

2.45 

6.  22 

3.  95 

n.  d.. 

99.51 

2.  34 

A3.  Ill 

1.024 

.171 

.  032 

.032 

.014 

.044 

.100 

.042 

26 

60.24 

20.  28 

2.  32 

3.  88 

0.  50 

1.96 

7.80 

4.  28 

101. 26 

C3.  V 

1.004 

.  198 

.014 

.054 

.013 

.  036 

.126 

.046 

27 

66.  71 

15.  82 

0.  71 

0.  32 

2. 05 

3.  92 

7.12 

2.  42 

1.01 

100.  08 

A3.  Ill 

1.112 

.155 

.004 

.004 

.051 

.070 

.114 

.025 

PERSALANE - LAURVIKOSE. 


203 


ORDER  5.  PERFELIC.  CANADA  RE— Continued. 
SUBRANG  4.  DOSODIC.  LAURVIKOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

BeO 

1.02 

Q  0.2 
or  23. 9 
ab  55. 0 
an  7. 8 

di  4.5 
hy  6. 2 

Aiguille  du  Charmoz, 
Mont  Blanc,  France. 

Duparc. 

Duparc  and  Mrazec, 
Mem.  Soc.  Phys.  Gen. , 
XXXIII,  No.  l,p.  48, 
1898. 

Protogine  with 
beryl. 

so3 

Cl 

0.16 

0.09 

or  25. 0 
ab  42. 4 
an  14.5 
ne  6.0 

di  3.2 
ol  1.6 
mt  3. 9 
il  1.1 
ap  1.2 

Ferrera,  Columbretes 
Islands,  Spain. 

R.  Pfohl. 

F.  Becke, 

T.M.  P.  M.,  XVI, 
p.  177,  1896. 

Tephri  tic-tra¬ 
chyte. 

or  30. 0 
ab  46.1 
an  7.3 
ne  8.2 

di  1. 0 
ol  6.8 

Auerod,  n.  Holme- 
strand,  Norway. 

G.  Forsberg. 

W.  C.  Brdgger, 

Z.  K.,  XVI, 
p.  54,  1890. 

Nordmarkite. 

Q  0.8 
or  24. 4 
ab  52. 9 
an  13. 6 

hy  3.1 
mt  2.8 
hml.6 

Notterd,  n.  Tdns- 
berg,  Norway. 

G.  Forsberg. 

IV.  C.  Brdgger, 

Z.  K.,  XV T, 
ji.  35,  1890. 

Rhomben- 

porphyry. 

Q  4.7 
or  22.8 
ab  43. 4  . 
an  18. 3 

hy  2. 3 
il  0.3 
hm  5. 0 
tn  2.4 

Bollaerene,  n. 
Tdnsberg,  Norway. 

V.  Schmelek. 

W.  C.  Brdgger. 

Eg.  Kg.,  Ill, 
p.  329,  1899. 

Tdnsbergite. 

or  21.7 
ab  52. 4 
an  15. 0 
ne  2. 8 

C  0.4 

ol  2.5 
mt  2.3 
hml.O 

Slotsberg  n.  Tdns- 
berg,  Norway. 

G.  Forsberg. 

IV.  C.  Brdgger, 

Z.  Iv.,  XVI, 
p.  35,  1890. 

Rhomben-por- 

phyry. 

or  20. 0 
ab  51. 9 
an  16.1 

C  2.8 

ol  4.1 
mt  2. 6 
hm  1. 3 

Fagerheimasen,  Not- 
tero,  Norway. 

G.  Forsberg. 

W.  C.  Brdgger, 

Z.  K.,  XVI, 
p.  35,  1890. 

Augite-svenite. 

or  28.4 
ab  45. 1 
an  13. 3 
ne  3.4 

C  0.2 

ol  3.3 
mt  3.2 
hm  2.7 

Teie,  Notterd,  Nor¬ 
way. 

G.  Forsberg. 

W.  C.  Brdgger, 

Z.  K.,  XVI, 
p.  35,  1890. 

Rhomben-por- 

phyrv. 

or  21. 7 
ab  43. 5 
an  20. 6 
ne  4.3 

di  4.4 
mt  3.2 
hml.3 

Notterd,  n.  Tdnsberg, 
Norway. 

G.  Forsberg. 

W.  C,  Brdgger, 

Z.  K.,  XVI, 
p.  30,  1890. 

Laurvikite. 

Sum  low. 

Q  1.6 
or  26. 7 
ab  48. 2 
an  11. 4 

C  1.8 

hy  3.8 
mt  5. 3 
ap  1.2 

Byskoven,  n.  Laur- 
vik,  Norway. 

Stahl  and 
Mansfeld. 

A.  Merian, 

N.  J.  B.  B.,  Ill, 
p.  266,  1885. 

Augite-syenite. 
(Laurvikite,  W. 
C.  B.) 

Alkalies  not 
exact. 

or  20. 6 
ab  46. 6 
an  20. 0 
ne  2. 0 

C  0.8 

ol  7.0 
mt  2.  3 

Frederiksvarn,  n. 
Laurvik,  Norway. 

G.  Forsberg. 

W.  C.  Brdgger, 

Z.  Iv.,  XVI, 
p.  30,  1890. 

Laurvikite. 

Q  4.6 
or  25. 6 
ab  57. 1 
an  6.7 

di  0.8 
hy  2.4 
mt  1.2 

Frohnfeld,  n.  Kel- 
berg,  Eifel. 

K.  Vogelsang. 

Iv.  Vogelsang, 

Z.  D.  G.  G.,  XLII, 
p.  10,  1890. 

Trachyte. 

or  35.6 
ab  46. 6 
an  9.5 
ne  5.4 

C  0.4 

ol  1.6 
il  0.8 

Laacher  See, 

Rh.  Prussia. 

W.  Bruhns. 

W.  Bruhns, 

Vh.  Nh.  Ver.  Bonn, 
XLVIII,  p.  324,  1891. 

Sanidinite. 

Q  10.6 
or  13. 3 
ab  53. 0 
an  10.8 

C  0.5 

hy  7.7 
mt  1.6 
il  0.9 

Kddelschutzteich,  n. 
Nordhalben,  Thur¬ 
ingia. 

R.  Pohlmann. 

R.  Pohlmann, 

N.  J.  B.  B.,  Ill, 
p.  86,  1885. 

Quartz-mica- 

diorite-por- 

phvrite. 

Near  lassenose. 

so3 

Cl 

F 

i 

0. 21 

0. 10 
trace 

or  12.2 
ab  61. 3 
an  12. 0 

C  1.1 

ol  1.5 
mt  3.9 

Schwintel,  Hegau, 
Germany. 

G.  F.  Fdhr. 

G.  F.  Fdhr, 

In.  Diss. Wurzburg, 
p.  30,  1883. 

Phonolite. 

Not  fresh. 

Q  7.9 
or  16.  7 
ab  49. 3 
an  14. 7 

di  4. 7 
mt  7. 4 

Montagna  Grande, 
Pantelleria. 

H.  Forstner. 

H.  Forstner, 

Z.  K.,  VIII,  p.  155, 
1884. 

Augite-ande- 

site. 

Q  5.0 
or  23. 4 
ab  52. 4 
an  8.4 

di  3.3 
mt  7.4 

Porto  Scauri, 
Pantelleria. 

H.  Forstner. 

H.  Forstner, 

Z.  K.,  VIII,  p.  164, 
1884. 

Augite-ande- 

site. 

or  25. 6 
ab  50. 3 
an  7.2 
ne  8.5 

di  2.4 
ol  4.1 
mt  3. 2 

Montagna  Grande, 
Pantelleria. 

E.  Maegis. 

H.  Forstner, 

Z.  K.,  VIII,  p.  155, 
1884. 

Augite-ande- 

site. 

Q  8.6 
or  13. 9 
ab59. 7 
an  4.4 

di  11. 3 
mt  1.0 

Deleng  Baros, 

Sumatra. 

W.  Herz. 

L.  Milch, 

Z.  D.  G.  G. ,  LI,  p.  66, 
1899. 

Dacite. 

Near  akerose. 

204 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 
RANG  2.  DOMALKALIC.  PULASKASE. 


No. 

Si02 

ai2o3 

FeA 

FeO 

MgO 

CaO 

Na20 

K20 

H20+ 

H20- 

co2 

TiC)2 

I\A 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

60. 13 

20.  47 

1.04 

0.  72 

1. 15 

2.  59 

9.60 

1.06 

3.44 

trace 

trace 

100.  20 

A3.  Ill 

1.002 

.201 

.007 

.010 

.029 

.046 

.155 

.011 

— 

— 

2 

62.  90 

22.  80 

1.05 

n.  d. 

0.  40 

3.  55 

8.  49 

0. 53 

0.  90 

100.  62 

B3.  IY 

1.048 

.223 

.007 

(.014) 

.010 

.063 

.137 

.005 

• 

RANG  3.  ALKALICALCIC. 

1 

59.  33 

20.  46 

1.  66 

0.  22 

0.  83 

7.09 

2.58 

7.03 

0.  36 

trace 

0. 10 

0.05 

0. 16 

none 

100.  02 

Al.  I 

.989 

.200 

.010 

.003 

.021 

.127 

.042 

.074 

.001 

~ 

.002 

RANG  3.  ALKALICALCIC. 


1 

59.  26 

23.  63 

0.  30 

0.  57 

0.  31 

5.  93 

4.94 

4.  78 

0.  74 

100.46 

2.  625 

A3.  Ill 

.988 

.231 

.002 

.008 

.008 

.105 

.079 

.051 

31° 

RANG  3.  ALKALICALCIC. 


1 

54.  83 

25.  49 

1.61 

1.  65 

1.96 

6.  08 

5.69 

1.87 

1. 18 

0. 18 

100.  54 

A3.  Ill 

.914 

.250 

.010 

.023 

.049 

.109 

.092 

.020 

2 

58.  28 

19.  37 

1.35 

2. 98 

1.30 

4.  78 

4.  40 

3.  75 

1.78 

0.  44 

0.  33 

0.  96 

0.  35 

0.07 

0.  25 

100.  48 

Al.  I 

.971 

.190 

.008 

.041 

.033 

.085 

.071 

.040 

.012 

.002 

.001 

.002 

RANG  4.  DOCALCIC.  LABRADORASE. 


1 

49.  78 

29.  37 

0.34 

0.  60 

1.07 

11.86 

4.39 

0.  46 

1.76 

none 

0.  08 

none 

99.  80 

2.676 

A2.  II 

.830 

.288 

.002 

.008 

.025 

.211 

.071 

.005 

— 

.001 

— 

2 

53. 43 

28.01 

0.  75 

n.  d. 

0.  63 

11.24 

4.  85 

0.  96 

trace 

99.  87 

2.  673 

A3.  Ill 

.891 

.274 

.005 

(.010) 

.016 

.200 

.078 

.010 

3 

53.  42 

28.  36 

1.80  • 

n.d. 

0.31 

10.  49 

4.82 

0.  84 

n.  d. 

100. 04 

A3.  Ill 

.890 

.278 

.011 

(.022) 

.008 

.187 

.077 

.009 

4 

53.  02 

27.  75 

2.  92 

n.  d. 

0.  93 

10. 12 

4.  67 

0.81 

n.  d. 

0.12 

100. 36 

A3.  Ill 

.884 

.273 

.018 

(.036) 

.023 

.180 

.076 

.009 

.001 

5 

52.  61 

27. 15 

4.  05 

n.  d. 

1.  55 

9.  96 

4.  53 

0.  78 

n.d. 

0.  23 

100.  87 

A3.  Ill 

.  877 

.267 

.025 

(.050) 

.039 

.178 

.073 

.008 

.003 

6 

55.  01 

28.  31 

n.  d. 

0.  73 

0.  40 

10.  42 

4.52 

0.  61 

100.  00 

A3.  Ill 

.917 

.277 

— 

.010 

.010 

.185 

.072 

.006 

PERSALANE - LABRADOROSE. 


205 


ORDER  5.  PERFELIC.  CANADARE— Continued. 
SUB  RANG  5.  PERSODIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  6.1  di  2.4 

ab68. 6  ol  1.5 

an  9.7  int  1.6 

lie  6.8 

Fair  Haven, 
Connecticut. 

H.  S.  Washing¬ 
ton. 

E.  0.  Hovev, 

A.  J.  S.,  Ill,  p.  291, 
1897. 

Keratophyre. 

H20  includes 

co2. 

Not  fresh. 

Q  2.8  hv  2.8 
or  2.8 
ab  71.8 
an  17. 5 

C  1.8 

Jablanica, 

Herzegowina. 

C.  v.  John? 

C.  v.  John,  J.  v.  Wien, 

G.  R-A.,  XXXVIII, 
p.  346,  1888. 

Diorite. 

A1203  high? 

MgO  low? 

SUBRANG  2.  DOPOTASSIC.  MAZARUNOSE. 


ZrOo 
Cl  " 
FeSo 

none 

0.06 

0.02 

Q  3.4 
or  41. 1 
a)> 22.  0 

di  4. 5 
wo  2.6 
mt  0.  7 

Mazaruni  district, 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contrib. 

Augite-syenite. 

Dried  at  100°. 

British  Guiana. 

CoO 

0. 01 

an  23. 4 

Inn  1. 1 

Cu 

0.05 

Pb 

0. 01 

SUBRANG  3.  SODIPOTASSIC. 


or  28. 4  di  1. 0 

Table  Mountain, 

L.  G.  Eakins. 

W.  Cross, 

Augite-ande- 

Pebble. 

ab  40. 3  ol  0. 7 
an  28. 1  mt  0.5 

Denver,  Colorado. 

B.  U.  S.  G.  S.,  148, 

site. 

ne  1.0 

p.  159,  1897. 

SUBRANG  4.  bOSODIC. 


or  11. 1 
ab  47.  2 
an  30. 3 
ne  0.6 

C  3.0 

ol  4.9 
mt  2.3 

Horse  Race,  Menomi¬ 
nee  River,  Wiscon¬ 
sin. 

R.  B.  Riggs. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  62, 
p.  113,  1890. 

Mica-diorite- 

porphyry. 

Dried  at  105°. 

SrO  0. 09 

Li20  trace? 

Q  5. 2 
or  22. 2 
ab  37.  2 
an  22. 0 

di  1.4 
hy  5.4 
mt  1.  9 
il  1.8 

Shield’s  River  Basin, 
Crazy  Mountains, 
Montana. 

W.  F.  Ilille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  143,  1897. 

Diabase-por- 

phyrite. 

SUBRANG  3.  PRESODIC.  LABRADOROSE. 


SrO  none 

or  2.8 
ab  28, 8 
an  58. 7 
ne  4.5 

ol  2. 5 
mt  0.  5 

Carlton  Peak,  Min¬ 
nesota. 

A.  N.  Winchell. 

A.  N.  Winchell,  . 

A.  G.,  XXVI, 
p.  281,  1900. 

Plagioclasite. 

or  5. 6 
ab.il.  7 
an  35. 1 
ne  3.1 

di  3.4 
ol  1.2 

Nain,  Labrador. 

A.  Wichmann. 

A.  Wichmann, 

Z.  D.  G.  G.,  XXXVI, 
p.  491,  1884. 

Labradorite- 

rock. 

or  5.0 
ab  38. 3 
an  52. 0 

C  0.5 

ol  2.8 

Ogne,  Ekersund, 
Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  No.  5,  p.  96. 

Labradorite- 

rock- 

or  5. 0 
ab  37.  7 
an  50. 0 
ne  1. 1 

C  0.8 

ol  5.3 

Near  Lister,  Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  No.  5,  p.  113. 

Labradorite- 

rock. 

or  4. 4 
ab  37. 2 
an  49. 5 
ne  0.6 

C  0.8 

ol  7. 7 
il  0.5 

Rekefjord,  Ekersund, 
Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  No.  5,  p.  79. 

Labradorite- 

rock. 

Q  3.5 
or  3.3 
ab  37. 7 
an  51. 4 

C  1.4 

hy  2.3 

Turtschinka, 
Wolhynia,  Russia. 

J.  Morozewicz. 

W.  Tarassenko, 
cf.  N.  J.,  1899,  I, 
p.  463. 

Labradorite- 

rock. 

206 


CHEMICAL  ANALYSED  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 

RANG  5.  PERCALCIC.  CAXADASE. 


No. 

SiO, 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K,0 

H,0+ 

H.,0— 

C02 

Ti02 

P-A 

MnO 

BaO 

Sum  Sp.  gr. 

1 

45.  78 

30.  39 

1.33 

1.22 

2. 14 

16.  66 

1.  66 

0. 10 

0.51 

99.  79 

A3.  Ill 

.  763 

.298 

.008 

.017 

.054 

.297 

.027 

.001 

2 

47.  32 

30.  36 

1.35 

1.55 

2.44 

15.  45 

1.88 

0.  66 

0. 10 

0.  58 

101.69  2.73 

C2.  IV 

.789 

.298 

.009 

.022 

.061 

.276 

.030 

.007 

3 

46.24 

29.  85 

1.30 

2.12 

2.41 

16.24 

1.98 

0. 18 

n.  d. 

1.03 

trace 

101.35  2.85 

C2.  IV 

.771 

.293 

.008 

o 

CO 

O 

.060 

.290 

.032 

.002 

— 

CLASS  I.  PERSALANE. 

RANG  1.  PERALKALIC.  MIASKASE. 


1 

53.  56 

24.  43 

2. 19 

1.  22 

0.31 

1.24 

6.48 

9.50 

0.  93 

0. 10 

99.  96 

A3.  Ill 

.893 

.240 

.014 

.017 

.008 

.022 

.104 

.101 

.001 

2 

55.  06 

23.  29 

3.  29 

n.  d. 

trace 

1.46 

6.  76 

8.  86 

1.08 

99.  80 

A4.  IV 

.918 

.  228 

.020 

(.040) 

— 

.026 

.109 

.094 

3 

60.  42 

19.  23 

0.  63 

3.19 

0.  67 

1  '70 

1.76 

6.  99 

6.  88 

1.  74 

trace 

101.48 

B3.  IV 

1.007 

.189 

.004 

.044 

.017 

.031 

.113 

.  073 

— 

4 

58.  89 

19.  67 

1.79 

1.23 

0. 17 

1.31 

4.41 

11.00 

1. 11 

0.  59 

100. 17 

2.557 

A3.  Ill 

.982 

.193 

.011 

.017 

.004 

.023 

.071 

.117 

.008 

5 

55.18 

23.03 

2.  85 

n.  d. 

0.  25 

1.06 

5.98 

8.  43 

2.62 

100. 16 

A4.  IV 

.920 

.226 

.018 

(.036) 

.006 

.020 

.097 

.089 

6 

55.  87 

21.82 

2.34 

1.10 

0. 48 

3.07 

4.  81 

10.  49 

0.  34 

trace 

100.  32 

2.  551 

A3.  Ill 

.931 

.214 

.015 

.015 

.012 

.  055 

.078 

.114 

— 

RANG  1.  PERALKALIC.  MIASKASE. 

1  v 

58.  30 

21.  38 

1.05 

2.04 

0.  22 

0.  95 

8.  66 

6.  06 

0.  45 

0.  35 

none 

0. 10 

0.04 

trace 

none 

100.  05 
.08 

Al.  I 

.972 

.210 

.007 

.029 

.006 

.017 

.140 

.065 

.001 

— 

1 

99.97 

2 

58.  77 

22.  53 

1.54 

1.04 

0. 19 

0.  74 

9.  62 

4.  89 

0.  90 

0.07 

0.31 

trace 

none 

100.  71 

2.596 

A2.  II 

.980 

.220 

.010 

.014 

.005 

.013 

.155 

.  052 

.004 

— 

—  • 

11° 

3 

56.  75 

20.  69 

3.  52 

0.  59 

0.11 

0.  37 

11.45 

2.  90 

3. 18 

0.04 

0.  30 

trace 

none 

100. 18 
.06 

2.  474 

A2.  II 

.946 

.203 

.022 

.008 

.003 

.007 

.185 

.031 

.004 

— 

— 

100. 12 

22° 

4 

54.  22 

20.  20 

2.35 

1.02 

0.29 

0.  70 

9.  44 

4.  85 

5.  57 

0.  42 

trace 

0.  38 

0.11 

0. 19 

trace 

99.  74 

Al.  I 

.904 

.198 

.015 

.014 

.007 

.012 

.152 

.052 

.005 

.001 

.003 

— 

5 

59  73 

20.  05 

3.  43 

0.  99 

0.17 

3.  35 

7.  94 

4.  77 

4.  85 

0.  69 

0.  93 

n.  d. 

trace 

0.11 

100.  01 

2.466 

A3.  Ill 

.879 

.197 

.021 

.014 

.004 

.060 

.128 

.051 

— 

— 

.001 

6 

58.74 

20.  85 

4. 15 

n.  d. 

0.  22 

0.  36 

9.  72 

4.  23 

1.82 

100.  09 

A4.  IV 

.979 

.204 

.026 

(.052) 

.006 

.007 

.156 

.  045 

PERS  A  L  A  N  E - M I A  S  KOSE . 


20V 


ORDER  5.  PERFELIC.  CANADARE — Continued. 

SUBRANG.  NOT  NEEDED. 


I  nclusive. 


Norm. 


or 

0. 

6 

di 

6. 

1 

nb  12. 

1 

ol 

> 

5 

an 

75. 

1 

mt 

l! 

9 

ne 

1. 

1 

or 

3. 

9 

di 

3. 

5 

ab  13. 

6 

ol 

4. 

4 

an 

72. 

6 

mt 

o 

1 

ne 

1. 

1 

or 

1. 

1 

di 

7. 

1 

nb  12. 

1 

ol 

3. 

0 

an 

72. 

0 

mt 

1. 

9 

ne 

o 

6 

or 

56. 2 

ol 

0.9 

ab 

3.4 

mt 

3.2 

an 

6.1 

ne 

27. 5 

c 

1.3 

or 

52. 3 

ol 

5. 3 

ab 

6. 3 

an 

7.0 

ne 

27. 5 

or 

40.6 

di 

6.7 

ab  35. 0 

ol 

2. 8 

an 

0.8 

mt 

0.9 

nel3. 1 

or 

65. 1 

di 

2.5 

abl3.1 

wo 

1.0 

an 

1.4 

mt 

2.6 

ne 

13.1 

S03 

0. 44 

or 

49.5 

Cl 

0. 32 

ab  18. 3 

ol 

4.2 

an 

5.6 

ne 

7.  7 

so 

4.9 

no 

3.  6 

c 

3.0 

or 

63.4 

di 

2.6 

an 

6.1 

wo 

2. 5 

ne 

22.  2 

mt 

3.  5 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks.  , 

Burnt  Head,  Monhe- 
gan  Island,  Maine. 

E.  C.  E.  Lord. 

E.  C.  E.  Lord, 

A.  G.,  XXVI, 
p.  340,  1900. 

Anorthosite. 

South  Sherbrooke, 
Ontario. 

A.  W.  Lawson. 

W.  G.  Miller, 

Rep.  Bur.  Mines,  Tor., 
VII.pt.  2,  p.  227, 1899. 

Corundum- 

anorthosite. 

Also  in  A.  G., 
XXIV,  p.  280, 
1899. 

Mouth  of  Seine  River, 
Rainy  Lake  region, 
Ontario. 

A.  W.  Lawson. 

A.  P.  Coleman, 

Rep.  Bur.  Mines,  Tor., 
V,  p.  99,  1896. 

Anorthosite. 

Also  in  A.  G., 
IV,  p.  909, 
1896. 

ORDER  6. 

LENDOFELIC 

RUSSARE. 

SUBRANG 

3.  SODIPOTASSIC. 

BEEMEROSE. 

Beemersville, 

New  Jersey. 

L.  G.  Eakins. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  150, 
p.  211.  1898. 

Nephelite-syen- 

ite. 

• 

Serra  de  Tingua, 

Brazil. 

E.  Hussak. 

E.  Hussak, 

N.  J.,  1892,  II,  p.  146. 

Leucite-tingua- 

ite. 

Moita,  Foya, 

Portugal. 

M.  Dittrich. 

Kraatz-Koschlau  anti 
Hackman,  T.M.P.  M., 
XVI,  p.  225,  1896. 

Nephelite-syen- 

ite. 

Sum  high. 

Picota, 

Serra  de  Monchique, 
Portugal. 

A.  Zilliacus. 

Kraatz-Koschlau  and 
Hackman,  T.  M.  P.  M., 
XVI,  p.  252,  1896. 

Leucite-tingua- 

ite-vitro- 

phyre. 

• 

Rieden, 

n.  Laacher  See, 
Rhenish  Prussia. 

K.  Busz. 

K.  Busz, 

Vh.  Nh.  Ver.  Bonn, 
XLVIII,  p.246, 1891. 

Leucite-phono- 

lite. 

Lake  Bracciano, 

Italy. 

II.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  V,  p.  49,  1897. 

Leucite-phono- 

lite. 

Dried  at  110°.  j 

SUBRANG  4.  DOSODIC.  MIASKOSE. 


ZrO, 

so3‘ 

Cl 

0.02 

0.08 

0.35 

or  36. 1 
ab  35.  l 
an  2. 8 
ne  15. 1 
so  5.0 

di 

ol 

mt 

1.7 

2.0 

1.6 

Horne  Farm,  Red 
Hills,  New  Hamp¬ 
shire. 

H.  S.  Washing¬ 
ton. 

TI.  S.  Washington, 

Priv.  contrib. 

Foyaite. 

Zr02 

0.11 

or  28. 9 
ab  43.0 
an  3. 6 
ne  20. 7 

ol 

mt 

il 

0.4 

2.3 

0.6 

Salem  Neck,  Essex 
County,  Massachu¬ 
setts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  VI,  p.  803, 

1898. 

Foyaite. 

A1203  corrected 
for  Zr02. 

so3 

Cl 

trace 

0.28 

or  17. 2 
ab  46. 6 
ne23. 6 

ac 

di 

wo 

mt 

6.0 

0.5 

0.5 

2.0 

Pickard’s  Point,  Man¬ 
chester,  Essex  Co., 
Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  VI,  p.  185, 
1898. 

Analcite- 

tinguaite. 

Cl  high? 

so3 

none 

or  28. 9 
ab  33.5 
ne  23. 3 

ac 

di 

wo 

mt 

il 

2.8 

1.5 

0.6 

2.1 

0.8 

South  boro,  Massachu¬ 
setts. 

H.  X.  Stokes. 

B.  U.  S.  G.  S.,  148, 
p.  77,  1897. 

Phonolite. 

Not  described. 

or  28. 4 
ab  30. 9 
an  5.0 
nel9. 6 

di  1.0 
ol  4. 4 
mt  3.2 
hm  1. 1 

Heron  Bay,  Lake 
Superior,  Ontario. 

H.  W.  Charl¬ 
ton. 

A.  P.  Coleman, 

J.  G.,  VII.  p.  435, 
1899. 

Ileronite. 

Not  fresh. 

or  25.  0 
ab  46. 6 
an  0.8 
nel9.0 

di 

ol 

1.0 

5.2 

Saline  County,  Ar¬ 
kansas. 

W.  A.  Noyes. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S., 

1890,  II,  p.  139,  1891. 

Nephelite- 

syenite. 

208 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 

RANG  1.  PERALKALIC.  MIASKASE— Continued. 


No.' 

Si02 

Al2(  >3 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h20+ 

h2o- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

7 

54.  07 

21.67 

3. 55 

n.  d. 

0.36 

0.  36 

8.91 

4.  76 

5.44 

0. 15 

99.  27 

B3.  IV 

.901 

.212 

.022 

(.044) 

.009 

.006 

.143 

.051 

.002 

8 

58.  60 

20.  98 

2.  22 

0.44 

0.  33 

1. 13 

8.  38 

5.49 

1.92 

99.  69 

A3.  Ill 

.  977 

.205 

.014 

.006 

.008 

.020 

.135 

.059 

9 

57.  86 

20.  26 

2.  35 

0.39 

0.04 

0.  89 

9.  47 

5. 19 

2.  40 

0.21 

none 

0.22 

0.  03 

0.21 

0.  09 

99.  97 

Al.  I 

.964 

.599 

.015 

.005 

.001 

.016 

.153 

.055 

.003 

■ - 

.003 

.001 

10 

59.  23 

21.10 

n.  d. 

4. 13 

0.  47 

0.  64 

8.  67 

4.  49 

1. 18 

0. 10 

100.  01 

A4.  IV 

.987 

.207 

— 

.057 

.012 

.011 

.140 

.048 

11 

58.  59 

20.  77 

n.  d. 

4.  35 

0.  46 

1.46 

8. 17 

4.  80 

0.  92 

0.09 

99.61 

A4.  IV 

.977 

.203 

— 

.061 

.012 

.026 

.132 

.051 

12 

58.09 

21.29 

n.  d. 

4.06 

trace 

0.  81 

9.35 

3.  79 

2.  26 

0.  20 

99.  85 

A4.  IV 

.968 

.209 

— 

.057 

— 

.014 

.151 

.040 

13 

57.  88 

20.  46 

n.  d. 

3.  77 

0.  28 

0.  76 

8.74 

5. 11 

2.  55 

0.17 

99.  72 

A4.  IV 

.965 

.200 

— 

.053 

.007 

.013 

.141 

.  055 

14 

56.94 

21.  03 

n.  d. 

3.41 

0.  33 

1.93 

9.  05 

4.  66 

2. 15 

0.  39 

99.  89 

A4.  IV 

.949 

.206 

— 

.048 

.008 

.034 

.146 

.050 

15 

56.57 

20.  74 

n.  d. 

5.  66 

0.  23 

1.05 

9.  36 

4.  49 

1.49 

1. 11 

99.  70 

A4.  IV 

.943 

.203 

— 

.079 

.006 

.019 

.151 

.048 

16 

55.94 

20.  91 

n.  d. 

4.50 

0.  42 

1.73 

8.87 

5.  44 

2.  43 

0.  31 

100.  55 

A4.  IV 

.932 

.  205 

— 

.062 

.011 

.030 

.143 

.058 

17 

58.  70 

19.  26 

3.  37 

0.  58 

0.  76 

1.41 

8.  55 

4.  53 

2.57 

0.  07 

trace 

0.10 

0. 10 

100.  00 

A2.  II 

.978 

.189 

.021 

.008 

.019 

.025 

.138 

.048 

— 

.001 

.001 

18 

60.  02 

20.  98 

2.  21 

0.51 

trace 

1.  18 

8.  83 

5.  72 

0.  70 

t 

trace 

trace 

100. 15 

2.  576 

A3.  Ill 

1.000 

.206 

.014 

.007 

— 

.021 

.142 

.061 

— 

— 

13° 

19 

59. 38 

19.  47 

1.60 

1. 19 

0.  36 

1.  96 

7.  80 

5.83 

0.  69 

0. 11 

0.  58 

0.  08 

0.15 

0. 13 

100.  05 

Al.  I 

.990 

.191 

.010 

.017 

.009 

.035 

.126 

.  062 

.007 

.001 

.002 

.001 

20 

59.  00 

20.  07 

1.58 

0.  65 

0. 10 

1.05 

8.34 

5.  63 

2.  03 

0.  24 

0.  26 

0.  29 

0.05 

0. 12 

trace 

99.  92 

Al.  I 

.983 

.197 

.010 

.009 

.003 

.019 

.135 

.060 

.004 

— 

.002 

— 

21 

58.98 

20.54 

1.65 

0.  48 

0.  11 

0.  67 

9.  95 

5.31 

0.  97 

0. 19 

0.  24 

0.04 

0.  26 

none 

100. 07 

.06 

Al.  I 

.983 

.201 

.010 

.007 

.003 

.012 

.160 

.056 

.003 

— 

.004 

100. 01 

22 

58.  78 

20.  03 

1.87 

0.  49 

0. 16 

0.  83 

9.  36 

5.50 

1.57 

0.31 

0.  29 

0.  03 

0. 15 

none 

100.  24 

.13 

Al.  I 

.980 

.196 

.012 

.007 

.004 

.015 

.151 

.059 

.004 

— 

.002 

— 

100. 11 

23 

58. 64 

19.  62 

2. 17 

0.  42 

0.37 

1.24 

8.  39 

5.26 

2.  40 

0.  34 

0.  23 

0.  20 

0.03 

0.  20 

trace 

99.  74 

2.  52 

Al.  I 

.977 

.192 

.014 

.006 

.009 

.022 

.135 

.  056 

* 

. 

.003 

— 

.003 

— 

| 

PERSALANE - MIASKOSE. 


209 


ORDER  6.  LENDOFELIC.  RUSSARE— Continued. 

SUBRANG  4.  DOSODIC.  MIASKOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  28. 4 
ab  35. 6 
an  1.7 
ne  21.3 

C  1.2 

ol  6.2 

One  mile  south  of 

Hot  Springs,  Ar¬ 
kansas. 

W.  A.  Noyes. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S., 

1890,  II,.  p.  370,  1891. 

Tinguaite. 

or  32. 8 
ab  41.4 
an  3. 1 
ne  15. 9 

di  1.8 
int  1.4 
hml.3 

Black  Hills,  South 
Dakota. 

H.  N.  Stokes. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  114,  1897. 

Phonolite. 

Same  as  next, 
No.  9. 

Zru 

so3 

Cl 

s 

SrO 

LioO 

0. 15 

0.06 

0. 08 

0. 03 

0.04 

trace 

or  30. 6 
ab  39. 3 
nel9. 0 

ac  4.2 
wo  1.9 
mt  1. 2 

Black  Hills,  South 
Dakota. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  150, 
p.  193,  1898. 

Phonolite. 

Same  as  above, 
No.  8. 

or  26. 7 
ab  47. 7 
an  3. 1 
ne  13. 9 

C  0.8 

ol  6.7 

Squaw  Creek,  Black 
Hills,  South  Da¬ 
kota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.,  XII, 
p.  272,  1899. 

Tinguaite. 

or  28. 4 
ab  41. 9 
an  5. 6 
nel4. 8 

di  1. 6 
ol  6.6 

Bald  Mountain,  Black 
Hills,  South  Da¬ 
kota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.,  XII, 
p.  272,  1899. 

Phonolite. 

or  22.2 
ab  48. 2 
an  3.9 
ne  16.8 

C  0.4 

ol  5.8 

Green  Mountain, 

Black  Hills,  South 
Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.,  XII, 
p.  272,  1899. 

Phonolite. 

• 

or  30.6 
ab  39. 3 
an  1. 1 
nel8. 7 

di  2.3 
ol  5.1 

Calamity  Gulch, 

Black  Hills,  South 
Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.,  XII, 
p.  272,  1899. 

Phonolite. 

- 

or  27. 8 
ab  35. 6 
an  2.8 
ne  22. 1 

di  5. 8 
ol  3.3 

Ragged  Top  Mountain, 
Black  Hills,  South 
Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.,  XII, 
p.  272,  1899. 

Phonolite. 

or  26. 7 
ab  36. 7 
an  1.1 
ne  23. 0 

di  3.6 
ol  7. 1 

Annie  Creek,  Black 
Hills,  South 

Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.,  XII, 
p.  272,  1899. 

Phonolite. 

or  32. 2 
ab  28. 3 
an  1.1 
ne  25. 3 

di  6. 4 
ol  4. 6 

Annie  Creek,  Black 
Hills,  South 

Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Ab  Ac.,  XII, 
p.  272,  1899. 

Phonolite. 

or  26. 7 
ab  48. 2 
an  0.8 
nel3. 1 

di  4. 5 
mt  1.9 
hm  2. 0 

Shield’s  River,  Crazy 
Mountains,  Mon¬ 
tana. 

W.  H.  Melville. 

Wolff  and  Tarr, 

B.  M.  C.  Z.,  XVI, 
p.  232,  1893. 

Acmite- 

trachyte. 

Cl 

trace 

or  33. 9 
ab  43. 0 
an  0.8 
nel7. 0 

wo  2.1 
mt  1.6 
hm  1. 1 

Between  Florissant 
and  Manitou,  El 
Paso  Co.,  Colorado. 

L.  G.  Eakins. 

« 

W.  Cross, 

Pr.  Col.  Sc.  Soc..,  II, 
p.  169,  1887. 

Phonolite. 

Also  in  16  A.  R. 
U,S.G.S.,II, 
p.  39,  1895. 

ZrOo 

so3“ 

Cl 

SrO 

LioO 

0. 10 

0. 37 

0.22 

0.03 

trace 

or  34  6 
ab  43. 0 
an  0.8 
ne  4.8 
so  3. 0 
no  3.6 

di  3. 7 
wo  1.9 
mt  2. 3 
il  1.1 

Bull  Cliff,  Cripple 
Creek,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

16  A.R.U.S.G.S.,  II, 
p.  43,  1895. 

Trachytic- 

phonolite. 

ZrOo 

so3 

Cl 

SrO 

LLO 

0. 20 

0.07 

0.24 

none 

trace 

or  33.4 
ab  44, 0 
an  0.6 
nelO.  5 
so  3. 3 

di  0. 7 
wo  1.6 
mt  2. 3 

Big  Bull  Mountain, 
Cripple  Creek, 
Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

16  A.  R.  U.  S.G.S.,II, 
p.  39,  1895. 

Phonolite. 

ZrOo 

so3‘ 

Cl 

SrO 

Li„0 

0.20 

0.20 

0. 28 

none 

trace 

or  31.1 
ab  38. 3 
nel7.2 
so  3.9 

ac  4.6 
di  2.6 

Mitre  Peak,  Cripple 
Creek,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

16  A.  R.U.  S.  G.  S.,II, 
p.  39,  1895. 

Phonolite. 

ZrOo 

so3 

Cl 

SrO 

LioO 

0.17 

0. 12 

0.58 

none 

trace 

or  32.8 
ab  40. 3 
ne  10. 2 
so  8.0 

di  1.2 
wo  1. 2 
mt  1.4 
il  0.6 

Near  Straub  Moun¬ 
tain,  Cripple  Creek, 
Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

16  A.  R.  U.  S.  G.  S.,II, 
p.  39,  1895. 

Phonolite. 

ZrOo 

S03 

Cl 

SrO 

LioO 

0.09 
trace  ? 

0. 14 

trace 

trace 

or  31.1 
ab  44. 5 
ne  14. 2 

di  2.0 
wo  1.5 
mt  1.  4 
hml.3 

Rhyolite  Mountain, 
Cripple  Creek, 
Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

16  A.  R.  U.  S.  G.  S.,  II, 
p.  39,  1895. 

Phonolite. 

14128- No.  14—03 


14 


210 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE— Continued. 

*  RANG  1.  PERALKALIC.  MIASKASE— Continued. 


No. 

■ 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

o 

\4 

h20+ 

1  I 

O 

N 

k— i 

C02 

TiO, 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

24 

56.  24 

21.43 

2.01 

0.  55 

0. 15 

1.38 

10.  53 

5.  74 

0.  86 

0. 12 

0.  26 

0.  06 

0.  08 

0.  08 

99.  86 

2.619 

Al.  I 

.937 

.210 

.013 

.008 

.004 

.025 

.170 

.061 

.003 

.001 

.001 

22° 

25 

58.  40 

20.  25 

1.  78 

2.  41 

0.  49 

3. 11 

7.01 

5.  39 

0.57 

0.  27 

none 

0.  25 

0.  20 

trace 

trace 

100.  21 

Al.  I 

.973 

.198 

.011 

.033 

.012 

.056 

.113 

.057 

.003 

.001 

— 

— 

26 

52.  83 

20.  70 

2.  84 

1. 19 

0.41 

1.00 

9.  94 

4.  87 

5. 13 

0.  37 

0. 15 

0. 16 

0.03 

trace 

99.68 

Al.  I 

.880 

.203 

.018 

.017 

.010 

.018 

.160 

.052 

.002 

_ 

27 

53. 10 

22.50 

5. 10 

n.  d. 

0. 15 

2. 15 

8.  49 

6.  48 

1.  65 

100.  43 

A4.  IV 

.885 

.  221 

.032 

(.064) 

.004 

.038 

.137 

.069 

28 

52.  75 

22.  55 

3.  65 

n.  d. 

0.15 

1.85 

8. 10 

7.  05 

3.  60 

1 

99.  70 

A4.  IV 

.879 

.221 

.022 

(.044) 

.004 

.033 

.131 

.075 

29 

60.  84 

20.  03 

1.47 

0.  42 

0. 45 

1.  56 

9.12 

4.48 

1. 15 

0. 11 

99.64 

2.  683 

A3.  Ill 

1.014 

.196 

.009 

.005 

.011 

.028 

.147 

.047 

30 

56.  67 

22.  42 

1.82 

0.  80 

1.33 

0.  28 

8.52 

7.32 

1. 18 

0.  24 

0.01 

trace 

100.  59 

A2.  II 

.945 

.220 

.011 

.011 

.033 

.005 

.137 

.078 

.003 

— 

— 

31 

53.  96 

21.78 

0.  62 

2.  55 

0.  54 

1.93 

8.61 

7.  02 

2.  29 

1.03 

trace 

0. 15 

100.  48 

2.  578 

A  2.  II 

.899 

.214 

.004 

.035 

.014 

.034 

.139 

.  075 

.012 

— 

.002 

18°. 

32 

54.20 

21.  74 

0.  46 

2.  36 

0.  52 

1.95 

8.  69 

6.  97 

2.  32 

1.04 

trace 

0. 11 

100. 36 

2.  578 

A2.  11 

.903 

.213 

.003 

.033 

.013 

.035 

.140 

.074 

.012 

— 

.002 

18°.  55 

33 

53.71 

21.82 

0.  78 

2.47 

0.  56 

1.90 

8.52 

7.07 

2.  27 

1.03 

trace 

0. 19 

100.  32 

2.578 

A2.  II 

.895 

.214 

.005 

.035 

.014 

.034 

.137 

.  075 

.012 

.003 

18°.  5 

34 

55.  93 

21.83 

3.  62 

0.34 

0.61 

2.  54 

7.84 

6.  01 

0.  72 

0.  03 

0.42 

0.  22 

100. 70 

2.  62 

A2.  II 

.932 

.214 

.  023 

.005 

.015 

.045 

.127 

.064 

.005 

.001 

35 

61.  03 

18.  63 

3.  66 

n.  d. 

1.04 

1.56 

7.68 

5. 57 

0.41 

99.  58 

A4.  IV 

1.017 

.183 

.023 

(.046) 

.026 

.028 

.124 

.059 

36 

58.  61 

21.12 

2.62 

1. 14 

0.  79 

0.  62 

7.  85 

5.  93 

1.01 

1.  10 

trace 

trace 

100.  79 

A3.  Ill 

.977 

.207 

.016 

.017 

.020 

.011 

.127 

.063 

.013 

— 

— 

37 

56.  40 

21.36 

2.  96 

2.  39 

0.90 

1.81 

8.  57 

4.83 

0.  01 

0.84 

0.  49 

100.  56 

A2.II 

.940 

.209 

.018 

.033 

.023 

.032 

.138 

.051 

.010 

.007 

38 

56.  26 

23.  59 

0.  85 

2.61 

0.  27 

0.  54 

7.  77 

5.  72 

0.  37 

1.37 

0.47 

0.  09 

99.91 

A2.II 

.938 

.231 

.005 

.036 

.007 

.009 

.126 

.061 

.  006 

.001 

39 

53.  45 

21.28 

4.08 

n.  d. 

0.18 

1.30 

8.  37 

5.98 

5.20 

99.95 

A4.  IV 

.891 

.208 

.026 

(.052) 

.005 

.023 

.135 

.064 

40 

56.  43 

20.  58 

2.  88 

1.28 

0.  28 

1.45 

8.  62 

4.23 

2.  90 

n.d. 

0.  06 

0.  66 

99.  58 

2.  499 

A2.  II 

.941 

.202 

.018 

.018 

.007 

.026 

.139 

.045 

— 

.009 

41 

55.  92 

20.  35 

2. 16 

0.  94 

0.  62 

2.  21 

8.35 

4.83 

3.51 

trace 

0.18 

0.50 

100.  04 

2.  452 

AM 

.932 

.200 

.014 

.013 

.016 

.039 

.135 

.052 

— 

.001 

.007 

PERSALANE - MIASKOSK. 


211 


ORDER  6.  LENDOFELIC.  RUSS  A  RE— Continued. 


SUBRANG  4.  DOSODIC.  MIASKOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ZrO-> 

so3 

Cl 

s 

SrO 

0.09 

0.10 

0.12 

0. 03 

0. 03 

or  33. 9 
ab  22. 0 
nc32. 7 

ac  6. 0 
di  2.9 
wo  1.5 

Pleasant  Valley,  Col¬ 
fax  County,  New 
Mexico. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  171,  1900. 

Phonolite. 

' 

NoCr2Osor  NiO. 

ZrOo 

so3' 

Cl 

none 

0. 06 

0.02 

or  31.7 
ab  37. 7 
an  7.8 
ne  11. 6 

di  6. 7 
ol  0. 5 
mt  2.9 

San  Jose,  Tamaulipas, 
Mexico. 

JI.  S.  Wash¬ 
ington. 

H.  S.  Washington, 

Priv.  eontrib. 

Nephelite- 

syenite. 

Error,  should  be 
viezzenose. 

so3 

Cl 

trace 

0.06 

or  28. 9 
ab  25. 7 
ne  29. 0 

ac  4. 2 
di  4. 2 
mt  2.1 

San  Jose,  Tamaulipas, 
Mexico. 

H.  S.  Wash¬ 
ington. 

H.  S.  Washington, 

Priv.  eontrib. 

Tinguaite. 

or  38. 4 
ab  13. 1 
an  4. 2 
ne  31 . 8 

di  5.7 
ol  4.5 

Pocos  de  Caldas, 

Minas  Geraes, 

Brazil. 

J.  Machado. 

J.  Machado, 

T.  M.  P.  M.,  IX, 
p.  345,  1888. 

Neph  elite- 
syenite. 

or  41. 7 
ab  11.5 
an  4.2 
ne31.0 

di  4.4 
ol  3.1 

Pocos  de  Caldas, 

Minas  Geraes, 

Brazil. 

J.  Machado. 

J.  Machado, 

T.  M.  P.  M.,  IX, 
p.  334,  1888. 

Nephelite- 

syenite. 

S03 

0.06 

or  26. 1 
ab  51.9 
an  0. 6 
ne  13. 6 

di  2.3 
wo  1.7 
mt  1.2 
hm  0. 6 

Dunmoor  Hill, 

Cheviot  Hills, 
Scotland. 

I.  Macadam. 

H.  Kynaston, 

Tr.  Edin.  G.  Soc. 

VII,  p.  401,  1899. 

Biotite- 

porphyrite. 

Cl 

trace 

or  43  4 
ab  23. 1 
an  1.4 
ne  26. 4 

ol  2.3 
mt  1.  9 
il  0. 5 
hm  0. 5 

Between  Monchique 
and  Caldas, 

Serra  de  Monchique, 
Portugal. 

O.  N.  Heiden- 
reich. 

Kraatz-Koschlau  and 
Hackman, 

T.  M.  P.  M.,  XVI, 
p.  228,  1896. 

Nephelite- 

syenite. 

< 

Cl 

s 

SrO 

Li20 

trace 

trace 

trace 

trace 

or  41. 7 
ab  13. 6 
an  0.3 
ne32. 1 

di  7.8 
mt  0.9 
il  1.8 

Picota, 

Serra  de  Monchique, 
Portugal. 

P.  Jannasch. 

P.  Jannasch, 

N.  J.  1884;  II, 
p.  13. 

Nephelite- 

syenite. 

Mean  of  next 
two. 

Cl 

S 

SrO 

Li,0 

trace 

trace 

trace 

trace 

or  41. 1 
ab  14. 7 
ne31. 8 

di  7.8 
mt  0. 7 
il  1. 8 

Picota, 

Serra  de  Monchique, 
Portugal. 

P.  Jannasch. 

P.  Jannasch, 

N.  J.  1884,  II, 
p.  13. 

Nephelite- 

syenite. 

Same  specimen 
as  No.  33  be¬ 
low. 

Cl 

S 

SrO 

Li20 

trace 

trace 

trace 

trace 

or  41. 7 
abl3.6 
an  0.6 
ne  31. 5 

di  7. 5 
mt  1.2 
il  1.8 

Picota, 

Serra  de  Monchique, 
Portugal. 

P.  Jannasch. 

P.  Jannasch, 

N.  J.  1884,  II, 
p.  13. 

Nephelite- 

syenite. 

Same  specimen 
as  No.  32 
above. 

so3 

Cl. 

0.08 

0. 51 

or  35. 6 
ab  29. 3 
an  6.4 
ne  12. 2 
so  6.8 

di  3. 7 
wo  0. 6 
mt  1.2 
il  0.8 
hm2.9 

Forodada, 

Columbretes  Is¬ 
lands,  Spain. 

R.  Pfohl. 

F.  Becke, 

T.  M.  P.  M.,  XVI, 
p.  165,  1896. 

Trachytic 

phonolite. 

or  32. 8 
ab  44. 0 
ne  11.4 

di  6.7 
ol  3.9 

Auerdd, 

n.  Holmestrand, 
Norway. 

G.  Forsberg. 

W.  C.  Brbgger, 

Z.  K.,  XVI, 
p.  57,  1890. 

Quartz- 

syenite- 

porphyry. 

Near  nordmark- 
ose. 

Alkalies  high? 

or  35. 0 
ab  40. 9 
an  3. 1 
ne  13. 9 

C  0.6 

ol  1.4 
mt  0.9 
il  2.0 
hm  1. 9 

Heum,  Laugendal, 
Norway. 

O.  N.  Heiden- 
reich. 

W.  C.Brogger, 

Eg.  Ivg.,  Ill,  p.  176, 
1899. 

JEgirine- 

katoforite- 

foyaite. 

Cf.  remarks,  p. 
181,  loc.  cit. 

• 

or  28. 4 
ab  37. 7 
an  5.6 
ne  18.7 

di  2.8 
ol  1.1 
mt  4.2 
il  1.5 

Poutelitschorr,  Kola 
Penins.,  Finland. 

F.  Eichleiter. 

F.  Eichleiter, 

Vh.  Wien.  G.  R-A., 
XXVII,  p.  218,1893. 

Neph  elite- 
syenite. 

Cf.  Hackman, 
Fennia,  XI,  p. 
139,1894. 

or  33.9 
ab37.2 
an  2. 5 
ne  15.  6 

C  3. 6 

ol  3.2 
mt  1.2 
il  0.9 

Mt.  Sobatchia,  Ural 
Mts.,  Siberia. 

Bourdakow. 

A.  Karpinsky.  Guide 
Exc.,  VII.  Cong.  G. 
Int.,  V,  p.  22,  1897. 

Miascite. 

so3 

Cl 

0.17 

trace 

or  35. 6 
ab  22. 5 
an  2. 5 
ne  26. 1 

di  3.3 
ol  4.2 

Engelerkopf,  Laacher 
See,  Rh.  Prussia. 

K.  Busz. 

K.  Busz, 

Vh.  Nh.  Ver.  Bonn, 
XLVIII,  p.  236,  1891. 

Leucite- 

phonolite. 

SO.. 

Cl 

F 

0.22 

0. 07 
trace 

or  25. 0 
ab  45. 1 
an  5.0 
nel5. 1 

di  1.7 
mt  4.2 

Miigdeberg,  Hegau, 
Germany. 

G.  F.  Fohr. 

G.  F.  Fohr, 

In.  Diss.  Wurzburg, 
1883,  p.  32. 

Phonolite. 

Ti02  in  Si02 

so3  - 

Cl 

F 

Cr,03 

Cu 

0.23 

0.06 

trace 

trace 

0.18 

or  28. 9 
ab35. 6 
an  3.6 
ne  19.0 

di  3.4 
wo  2. 3 
mt  3.2 

Staufen,  Hegau,  Ger¬ 
many. 

G.  F.  Fohr. 

G.  F.  Fohr, 

In.  Diss.  Wurzburg, 
1883,  p.  28. 

Phonolite. 

212 


CHEMICAL  ANALYSES  OF  IGNEOUS  KOCKS. 


CLASS  I.  PERSALANE— Continued. 


RANG  1.  PERALKALIC.  MIASKASE— Continued. 


No. 

Si02 

A]203 

Fe,0, 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

42 

55. 01 

21.67 

1.95 

1.86 

0. 13 

2.  12 

9.  78 

3.  54 

2.17 

0.  27 

0.  08 

0.  22 

99.41 

2.513 

Al.I 

.917 

.212 

.012 

.026 

.003 

.038 

.158 

.037 

.003 

.001 

.003 

43 

56.  49 

18.  77 

3.  00 

1.46 

0.  63 

3.29 

7. 10 

5.  18 

1.83 

0.  62 

1.00 

0.  74 

0.  27 

0.32 

100.  70 

2.517 

A2.  II 

.942 

.184 

.019 

.020 

.016 

.058 

.114 

.056 

.009 

.002 

.005 

44 

58.  33 

19.  31 

3.  77 

0.  69 

0.  27 

1.15 

8.93 

5.  08 

2.  39 

0.04 

0.13 

0.  02 

100.  23 

2.  580 

A2.II 

.972 

.189 

.024 

.010 

.007 

.021 

.143 

.  055 

.002 

— 

45 

55.  46 

24. 49 

2.  63 

1.06 

0.  05 

0.  92 

9.  78 

5. 16 

0.  07 

0.  20 

trace 

trace 

99.  82 

A2.II 

.924 

.240 

.016 

.015 

.001 

.016 

.158 

.  056 

.003 

— 

— 

46 

53.  58 

25.  26 

0.64 

1.20 

0.  08 

1.20 

10.  49 

5.  28 

0.04 

0.  79 

0.  27 

trace 

99.  33 

B2.III 

.893 

.247 

.004 

.017 

.002 

.021 

.169 

.057 

.003 

RANG  1.  PERALKALIC.  MIASKASE. 


1 

58.  34 

23.05 

2.  07 

n.  d. 

trace 

0.  50 

12.  22 

1.  79 

1.53 

0.35 

trace 

0.  66 

100.51 

A3.  Ill 

.972 

2. 26 

.013 

(.026) 

— 

.009 

.197 

.019 

.004 

— 

.004 

2 

60.  29 

21.39 

3.07 

n.d. 

trace 

0.  46 

12.  30 

trace 

0.  67 

98. 18 

D4.  Y 

1.005 

.210 

.020 

(.040) 

— 

.008 

.198 

— 

RANG  2.  DOMALKALIC.  VIEZZENASE. 


1 

A2.  II 

53.  76 

.896 

23.  21 

.227 

1.27 

.008 

3. 18 

.044 

0.23 

.006 

2.  94 

.052 

6.97 

.113 

7.01 

.074 

1.  71 

none 

trace 

none 

100.  34 

RANG  2.  DOMALKALIC.  VIEZZENASE. 

1 

54.  68 

21.  63 

2.  22 

2.  00 

1.25 

2.  86 

7.03 

4.  58 

1.88 

0.  27 

none 

0.  79 

0.  28 

trace 

0.  05 

99.  81 

.09 

Al.  I 

.911 

.212 

.014 

.028 

.031 

.051 

.113 

.049 

.010 

.002 

— 

— 

99.  72 

2 

55.  62 

20.46 

n.d. 

4.06 

0.62 

1.91 

7.  64 

4.  38 

4.  22 

0.57 

99.  48 

A4.  IV 

.  9?7 

.200 

— 

.057 

.016 

.034 

.123 

.047 

3 

54.71 

22.07 

2.  49 

2.50 

0.  88 

2.  52 

7.58 

5.46 

1.13 

0.  20 

> 

99.  54 

A3.  Ill 

.912 

.216 

.016 

.035 

.  022 

.045 

.122 

.059 

4 

54.  61 

22.  07 

2.  33 

2.  50 

0.  88 

2.51 

7.  58 

5.  46 

1.13 

0.09 

0. 15 

trace 

99.31 

B2.  Ill 

.910 

.216 

.015 

.035 

.022 

.045 

.122 

.059 

.001 

.001 

— 

5 

56.  71 

22.  49 

3.  40 

n.d. 

1. 19 

2.  22 

7.37 

5.  87 

0.  45 

99.  70 

A4.  IV 

.945 

.220 

.021 

(.042) 

.030 

.039 

.119 

.063 

6 

56.  04 

22. 15 

1.06 

3.  28 

1.12 

2.  42 

8.  39 

5.03 

0.  67 

100. 16 

A3.  Ill 

.934 

.217 

.007 

.046 

.028 

.043 

.  135 

.054 

PERSALANE - VIEZZENOSE. 


213 


ORDER  6.  LENDOFELIC.  RUSSARE— Continued. 

SUBRANG  4.  DOSODIC.  MIASKOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03  0. 41 

Cl  0. 08 

F  trace 

Cr..03  trace 

Cu  0. 12 

or  20. 6 
ab  40. 9 
an  6.1 
ne  18. 5 
no  2.6 

di  3.4 
wo  0. 8 
mt  2. 8 
il  0.5 

Hohentwiel,  Hegau, 
Germany. 

G.  F.  Fbhr. 

G.  F.  Fbhr, 

In.  Diss.  Wurzburg, 
1883,  p.  28. 

Phonolite. 

or  81.1 
ab  38. 3 
an  3.9 
ne  11. 6 

di  3. 4 
wo  3.3 
mt  2, 6 
il  1. 4 
hm  1. 3 

Ziegenberg, 
n.  Nestersitz, 
Bohemia. 

F.  Hanusch. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XIV,  p. 
97,  1894. 

Trachytic 

phonolite. 

Near  nordmark 
ose  and  es 
sexose. 

S03  0. 12 

or  30. 6 
ab  41.4 
ne  15. 1 

ac  4. 2 
di  1.5 
wo  1.  6 
mt  2.3 
hm  0. 8 

Nagy-Koves, 

Fiinfkirchen, 

Hungary. 

K.  Gremse. 

K.  A.  Lossen, 

Z.  D.  G.G.,  XXXIX, 
p.  507,1887. 

Phonolite. 

or  31. 1 
ab31. 4 
an  4. 4 
ne27.8 

C  1.0 

mt  3.7 

Gy.  Szt.  Miklos, 
Czanod,  Sieben- 
biirgen,  Hungary. 

J.  v.  Szadeczky. 

J.  v.  Szadeczky, 

Cf.  N.  J.,  1901,  I,  p. 
402. 

Tinguaite. 

Cl  0. 50 

or  31.7 
ab  23. 1 
an  5.8 
ne  27. 5 
so  6. 9 

C  0.7 

ol  1.5 
mt  0. 9 

Ditro,  Siebenbiirgen, 
Hungary; 

J.  v.  Szadeczky. 

J.  v.  Szadeczky, 

Cf.  N.  J.,  1901,  I,  p. 
402. 

Nephelite- 

syenite. 

Sum  low. 

SUBRANG  5.  PERSODIC.  MARIUPOLOSE. 


or  10.6  ol  2.7 

ab  56. 6 
an  2.  5 
ne  25. 3 

Degemnatt,  Kaiser- 
stuhl,  Baden. 

A.  Cathrein. 

A.  Knop, 

Der  Kaiserstuhl, 
Leipzig,  1892, 
p.  209. 

Phonolite. 

Alkalies 

interchanged 
in  original? 

ab  74. 9  ol  4. 1 

an  2. 2 
ne  15. 6 

C  0.4 

Kaltschik  River, 
Mariupol,  Russia. 

Nikolajew. 

P.  Jeremejeff, 

B.  Ac.  Sc.  St.  Petersb., 
VII,  p.  89,  1897. 

Nephelite- 

syenite. 

Cf.  N.  J.  1900, 

I,  p.  395. 
cf.  No.  3, 
tuolumnose. 

SUBRANG  3.  SODIPOTASSIC. 


Cl 

SrO 

Li.,0 

0.02 

0. 04 
trace 

or  41. 1 
ab  14. 1 
anll.l 
ne24.4 

di 

ol 

mt 

2.7 

3.1 

1.9 

“The  Ridge,”  Mag¬ 
net  Cove,  Arkansas. 

J.  F.  Williams. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S.,1890, 
II,  p.  266,  1891. 

Tinguaite- 

porphyry. 

SUBRANG  4.  DOSODIC.  VIEZZENOSE. 

so3 

Cl 

F 

0. 07 
none 

0. 22 

or  27. 2 
ab  35. 6 
an  14. 2 
ne  12. 8 

ol 

mt 

il 

2.6 

3.2 

1.5 

Brookville,  New  Jer¬ 
sey. 

G.  Steiger. 

F.  L.  Ransome, 

A.  J.  S.,  VIII, 
p.  423,  1899. 

Nephelite- 

syenite. 

or  26. 1 
ab  38. 8 
an  8.3 
ne  13.  9 

di 

ol 

1.0 

6.5 

Preston,  Black  Hills, 
South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Ac.,  XII, 
p.  272,  1899. 

Tinguaite. 

Cl 

trace 

or  32. 8 
ab  27. 2 
an  9.2 
nel9. 9 

di  2.8 
Ol  2.5 
mt  3.7 

Serra  de  Monchique, 
Portugal. 

A.  Kalecsinzky. 

A.  Kalecsinzky, 

F.  K.,  XV, 
p.  344,  1885. 

Neph  elite- 
syenite. 

Same  as 

No.  4  below. 

Cl 

trace 

or  32. 8 
ab  25. 7 
an  9.7 
ne20. 7 

di  4.6 
Ol  1.9 
mt  3.5 

Barranco  do  Banho, 
Serra  de  Monchique, 
Portugal. 

A.  Kalecsinzky. 

A.  Merian, 

N.  J.  B.  B.,  Ill, 
p.  271,  1885. 

Nephelite- 

syenite. 

Same  as 

No.  3  above. 
TiO*2  from  Si02 
P.205  wrongly 
from  Fe./b. 

or  35. 0 
ab  28. 3 
an  10. 8 
ne  18. 5 

ol 

6.4 

Bratholmen,  Chris¬ 
tiania  Fjord,  Nor¬ 
way. 

G.  Forsberg. 

W.  C.  Brbgger, 

Z.  K.,  XVI, 
p.  38,  1890. 

Ditroite. 

or  30. 0 
ab  29. 9 
an  7.8 
ne22. 2 

di 

ol 

mt 

3.6 

4.6 

1.6 

Yasvik  Tunnel,  Laur- 
vik,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K.,  X  VI, 
p.  38,  1890. 

Nephelite- 

rhomben- 

porphyry. 

214 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  I.  PERSALANE — Continued. 


RANG  2.  DOMALKALIC.  YIEZZENASE— Continued. 


No. 

Si02 

ai2os 

Fe203 

EeO 

MgO 

Cat) 

Na20 

o 

s 

h20+ 

H20- 

co2 

Ti02 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

7 

54. 46 

19.96 

2.  34 

3.  33 

0.  61 

2.12 

8.68 

2.  76 

5.20 

trace 

trace 

99. 46 

A3.  Ill 

.908 

.  196 

.015 

.046 

.015 

.038 

.140 

.030 

— 

— 

8 

57.40 

23.09 

1.94 

n.  d. 

0.13 

1.66 

8.12 

5.70 

1. 18 

trace 

0.41 

trace 

100.  20 

A3.  Ill 

.957 

.226 

.013 

(.026) 

.003 

.030 

.130 

.061 

.005 

— 

9 

55. 19 

23.  02 

1.23 

n.d. 

trace 

2.  70 

9. 95 

4.  48 

0.  52 

none 

0.  63 

100.  42 

B3.  IV 

.920 

.225 

.017 

(.034) 

— 

.048 

.  1G0 

.048 

.008 

10 

57.  20 

20.  04 

2.  90 

1.20 

0.  40 

3. 19 

7.85 

4. 12 

2.  20 

trace 

0.  22 

trace 

99.42 

2.  578 

B2.  Ill 

.953 

.196 

.018 

.017 

.010 

.057 

.127 

.043 

— 

.002 

— 

CLASS  I.  PERSALANE. 

RANG  1.  PERALKALIC.  LAUGENASE. 


1 

53.  54 

24.27 

1.11 

1.24 

0.  08 

0.  71 

8.62 

8.  87 

1.09 

0. 14 

0.  20 

99.  87 

A3.  Ill 

.892 

.238 

.007 

.017 

.002 

.012 

.139 

.094 

RANG  1.  PERALKALIC.  LAUGENASE. 


CLASS  I.  PERSALANE.  . 
SECTION  1.  C  EXTREME  OVER  Z. 
RANG  1.  PERALKALIC. 


1 

A3.  Ill 

72.  66 

1.211 

18.98 

.186 

0.  57 

.004 

0.  21 

.003 

0. 47 

.012 

0.  03 

0.  21 

.003 

5.91 

.063 

0.  86 

V 

99.94 

SECTION  1.  C  EXTREME  OVER  Z. 

RANG  3.  ALKALICALCIC. 

1 

A3.  Ill 

66.  02 

1.100 

21.43 

.210 

4.  62 

.029 

0. 63 

.008 

1.77 

.044 

1.81 

.032 

0. 15 

.002 

CC 

O  m 

SS  -I 

0.16 

0.  08 

99.  88 

SECTION  1.  C  EXTREME  OVER  Z. 


RANG  2.  DOMALKALIC. 


1 

54.41 

27.04 

1.88 

0.11 

0.51 

2. 00 

1.14 

6.  71 

3.  36 

1,22 

0.  54 

0.  08 

99. 37 

2.  754 

B2.  Ill 

.907 

.265 

.012 

.001 

.013 

.036 

.018 

.071 

.008 

.001 

I  >  K  KS  ALAN  E - DO  POT  A  SSI  ( ' . 


215 


ORDER  6.  LENDOFELIC.  RUSSARE— Continued. 

SUBRANG  4.  DOSODIC.  VIEZZENOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  16.7 
ab  46. 6 
an  7.2 
lie  14. 5 

di  2.8 
ol  3.2 
mt  3. 5 

Njurjavrpachk, 
Umptek,  Kola, 
Finland. 

K.  Kjellin. 

V.  Hackman, 

Fennia,  XI, 
p.  158,  1894. 

Tinguaite. 

so3 

0. 57 

or  33. 9 
ab  35. 6 
an  8.3 
nell.6 
no  5.0 

C  1.2 

ol  2.3 
il  0.8 

Laacher  See, 

Rh.  Prussia. 

W.  Bruhns. 

W.  Bruhns, 

Vh.  Nh.  Ver.  Bonn, 
XLVIII,  p.  298,  1891. 

Trachyte. 

so3 

2. 70 

Q  2.8 
or  26. 7 
ab  30.4 
anil. 4 
no  24. 2 

di  1.7 
hy  2.5 
il  1.2 

Laacher  See, 

Rh.  Prussia. 

W.  Bruhns. 

W.  Bruhns, 

Vh.  Nh.  Ver.  Bonn, 
XLVIII.  p.  317,  1891. 

Nosean- 

sanidinite. 

• 

so3 

Cl 

trace 

0. 10 

or  23. 9 
ab  45. 6 
an  7. 2 
nell.4 

di  2.2 
wo  2. 5 
mt  4. 0 

Viezzena  Valley, 
Predazzo,  Tyrol. 

M.  Dittrich. 

Osann  and  Hlawatsch, 

T.  M.  P.  M.,  XVII, 
p.  560,  1898. 

Neplielite- 

syenite- 

porphyry. 

ORDER  7.  LENFELIC.  TASMANARE. 

SUBRANG  3.  SODIPOTASSIC. 


% 

or  52. 2 
ab  3. 1 
an  1.4 

di  1.5 
ol  0.8 
mt  1.6 

Near  J.  M.  Henry  No. 

II.  S.  Washing- 

H.  S.  Washington, 

Foyaite. 

2,  Magnet  Cove, 
Arkansas. 

ton. 

J.  G.,  IX, 

ne37.8 

p.  667,  1901. 

SUBRANG  4.  DOSODIC.  LAUGENOSE. 


or  32. 2 
ab  21.0 
ne36.0 

ac  2. 8 
di  6. 9 

Brathagen,  Laugen- 
dal,  Norway. 

G.  Forsberg. 

W.  C.  Brogger,  < 

Z.  K.,  XVI,  p.  41, 
1890. 

Foyaite. 

Also  in  Eg.  Kg., 
Ill,  p.  176, 
1898. 

t 

or  26. 1 
ab  14. 5 
an  2.8 
ne  44. 9 

di  6. 4 
ol  2.2 
mt  3.  5 

Laugendal,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K.,  XVI,  p.  41, 
1890. 

Nephelite- 
.  porphyry. 

Loose  block. 

Cf.  Eg.  Kg.,  Ill, 
p.  158,  1898. 

SUBCLASS  II.  Q+F+L  DOMINANT  OVER  C+Z. 
ORDER  3.  QUARFELIC. 

SUBRANG  1.  PERPOTASSIC. 


S03  0. 02 

Q  48.2  hy  1.2 

Near  Linhope, 

I.  Macadam. 

H.  Kynaston, 

Quartz-felsite. 

or  35. 0  mt  0.  8 

ab  1  6 

Cheviot  Hills,  Scot- 

Tr.  G.  Soc.  Edin., 

C  12.2 

land. 

VII,  p.  410,  1899. 

ORDER  3.  QUARFELIC— Continued. 
SUBRANG  1.  PERPOTASSIC. 


> 

S03  0.04 

Q  46.6  hy  4.4 
or  18. 9  mt  1.  9 
ab  1.0  •  hm3. 3 
an  8.9 

C  14.5 

Black  Lynn,  Cheviot 
Hills,  Scotland. 

I.  Macadam. 

H.  Kynaston, 

Tr.  G.  Soc.  Edin., 

VII,  p.  394,  1899. 

Granite. 

ORDER  4.  QUARDOFELIC. 

SUBRANG  2.  DOPOTASSIC. 

S03  0. 29 

Org  0. 10 

Q  17.3  hy  1.3 

or  39. 5  mt  0. 2 

ab  9.4  hm  1.8 

an  10. 0 

C  14.0 

Near  Wibbecke, 

W  estphalia. 

Jacobs. 

O.  Miigge, 

N.  J.  B.  B.,  VIII, 
p.  632,  1893. 

Quartz-kerato- 

phyre. 

Sum  low. 

Not  fresh. 

216 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  I.  FERSA LANE— Continued. 
SECTION  1.  C  EXTREME  OVER  Z. 


RANG  1.  PERALKALIC.  URALASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

52.  34 

16.  05 

0. 45 

n.  d. 

0. 16 

0.  20 

4.  77 

6.  58 

0.  40 

99.  50 

A3.  Ill 

.872 

.  157 

.003 

(.006) 

.  0C4 

.004 

.077 

.070 

2 

40.  06 

13.  65 

0.35 

n.  d. 

0. 15 

0.30 

3.71 

5.20 

0.  46 

99.  28 

B3.  IV 

ft 

.668 

.134 

.002 

(.004) 

.004 

.005 

.060 

.055 

CLASS  I.  PERSALANE. 
SECTION  1.  C  EXTREME  OVER  Z. 

RANG  4.  DOCALCIC.  BORSOWASE. 


1 

22.  52 

16.  31 

2.20 

n.  d. 

1.34 

6.  64 

1.00 

0. 58 

1.58 

99.  40 

3.  240 

B3.  IV 

.  375 

.160 

.014 

(.028) 

.034 

.118 

.016 

.006 

22° 

RANG  5.  PERCALOIC.  KYSCHTYMASE. 


1 

16.  80 

13.  89 

0.  76 

n.  d. 

0.61 

7.  26 

0.38 

0. 13 

0.  76 

100. 10 

A3.  Ill 

.280 

.136 

.005 

(.010) 

.015 

.129 

.006 

.001 

PERSALANK - KYSCHTYMASE. 


217 


SUBCLASS  II.  Q+F+L  DOMINANT  OVER  C+Z— Continued. 
ORDER  5.  PERFELIC.  INDARE. 

SUBRANG  3.  SODIPOTASSIC.  URALOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Corundum  18. 65 

or  38. 9  ol  0. 9 

ab  37. 2 
an  1.1 
ne  1. 7 

C  19.2 

Nikolskaja  Ssopka, 
Ural  Mountains, 
Siberia. 

J.  Morozewicz. 

J.  Morozewicz, 

T.  M.  P.  M.,  XVIII, 
p.  219,  1898. 

Corundum- 

syenite. 

Corundum  35. 40 

or  30. 6  ol  0. 7 
ab27.2 
an  1.4 
ne  2.3 

C  36.8 

Ilmen  Mountains, 

Ural  Mountains, 
Siberia. 

J.  Morozewicz. 

J.  Morozewicz, 

T.  M.  P.  M.,  XVIII, 
p.  219,  1898. 

Corundum- 

pegmatite. 

SUBCLASS  III.  Q+F+L  EQUAL  TO  C+Z. 
ORDER  5.  PERFELIC.  SIBERARE. 

SUBRANG  3.  PRESODIC.  BORSOWOSE. 


Corundum  47. 51 

or  3. 3  ol  5. 2 

Borsowska,  Ural 

J.  Morozewicz. 

J.  Morozewicz, 

Kyschtymite. 

Near  kyscbtym- 

ab  5. 2 

Mountains,  Sibe- 

T.  M.  P.  M.,  XVIII, 

ase. 

ne  1.7 

ria. 

p.  212,  1898. 

C  49.5 

SUBRANG.  NOT  NEEDED. 


Corundum  59. 51 

or  0. 6 

ol  2.0 

Borsowska,  Ural 

J.  Morozewicz. 

J.  Morozewicz, 

Kyschtymite. 

Corundum  in- 

an  85. 9 
no  1  7 

Mountains,  Sibe- 

T.  M.  P.  M.,  XVIII, 

eludes  spinel. 

C  59.5 

ria? 

p.  212,  1898. 

218 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE. 

RANG  1.  PERALKALIC.  VARINGASE. 


No. 

Si02 

A1A 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

li2o- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

75.  40 

7.  72 

1.41 

n.  d. 

1.26 

1.55 

8.  09 

4. 52 

0.  43 

0. 12 

100.  62 

2.  39 

A3.  Ill 

1.257 

.076 

.009 

— 

.032 

.028 

.130 

.048 

.002 

2 

74. 15 

10.  07 

0.  86 

none 

0.  30 

1.28 

6.  64 

4.  44 

0.  71 

trace 

0  93 

0.  09 

0.  26 

0.  04 

99.  96 

Al.  I 

1.236 

.099 

.005 

• - 

.008 

.023 

.107 

.047 

.011 

.001 

.004 

3 

74.  35 

8.  73 

5.  84 

1.00 

0.  07 

0.  45 

4.51 

3.  96 

0.25 

0.  22 

99.  38 

A3.  Ill 

1.239 

.086 

.037 

.014 

.002 

.008 

.073 

.042 

.003 

4 

70. 30 

6.  32 

9.  23 

1.40 

0.  89 

0.  84 

7.  70 

2.  50 

0.  82 

100. 00 

2.  69 

A3.  Ill 

1.172 

.062 

.  057 

.019 

.022 

.015 

.124 

.023 

RANG  1.  PERALKALIC.  VARINGASE. 


1 

63.  66 

7.  81 

8. 13 

3.61 

1.85 

2.  56 

3.  02 

2.45 

2.  94 

3.04 

0.31 

0.  54 

99.  92 

A3.  Ill 

1.061 

.076 

.051 

.050 

.046 

.046 

.048 

.026 

.002 

.008 

2 

72. 12 

9.  75 

4.11 

3.  22 

trace 

2.  99 

3.42 

2.  76 

0.10 

1.83 

100.30 

2.  706 

B3.  IV 

1.202 

.096 

.026 

.044 

— 

.053 

.055 

.030 

.023 

20. 4° 

RANG  2.  DOMALKALIC. 


66.44  17.43 

2.10 

1.60 

3.  70 

0.  65 

0.  99 

4.  76 

2. 13 

0.10 

trace 

99.90 

1.107  |  .171 

.013 

.022 

.093 

.012 

.016 

.051 

— 

RANG  2.  DOMALKALIC. 


69.27 

12.  56 

2.  69 

4.51 

0.91 

1.44 

3.12 

3.  05 

0.  76 

0.  78 

0.  06 

trace 

99.  35 

2.  724 

1.155 

.123 

.018 

.062 

.023 

.026 

.050 

.033 

.010 

— 

— 

64.  23 

14.  88 

8.  46 

0.  44 

2.35 

1.85 

2.  11 

3.  01 

3. 19 

100.  52 

2.  56 

1.071 

.146 

.053 

.006 

.059 

.033 

.034 

.032 

RANG  2.  DOMALKALIC. 


1 

71.24 

12.  20 

1.71 

5.44 

0. 13 

0. 98 

4.  29 

1.86 

0.  81 

0.97 

99.  63 

A3.  Ill 

1.187 

.120 

.011 

.  075 

.003 

.018 

.069 

.020 

.014 

RANG  3.  ALKALICALCIC.  ALMERASE. 


1 

63.  75 

17.62 

3.  00 

3.  26 

3.  41 

2.50 

1.75 

2. 40 

2.77 

100. 45 

A3.  Ill 

1.063 

.172 

.019 

.045 

.085 

.045 

.030 

.025 

• 

RANG  3.  ALKALICALCIC.  ALMERASE. 


65.  94 

13.  74 

0.  49 

5.21 

2.  33 

2.87 

2.  80 

1.63 

2.  59 

0.21 

0.  59 

0.  80 

0.  21 

0. 11 

1 

0.12  100.25 

1.099 

.134 

.003 

.072 

.058 

.051 

.045 

.018 

.010 

.001 

.002 

.001 

Al.I 


DOSALANE - SITKOSE. 


219 


SUBCLASS  I.  Q+F+L  EXTREME  OVER  C+Z. 
ORDER  3.  QUARFELIC.  HISPANARE. 

SUBRANG  3.  SODIPOTASSIC.  VARINGOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cl  0. 12 

Q  36.7 
or  26. 7 
ab  14. 7 

ac  14. 2 
ns  11.4 
di  6.0 
hy  0.4 

S.  of  Borax  Lake, 
California. 

W.H.  Melville. 

G.  F.  Becker, 

M.  XIII,  U.  S.  G.  S. 
p.  159,  1888. 

Rhyolite-obsid¬ 

ian. 

Zr()..  none 

Cl  "  0.13 

FeS2  trace 

CoO  none 

CuO  0. 06 

Pb  none 

Q  32.6 
or  26. 1 
ab  27. 2 

ac  2. 3 
ns  6. 1 
di  1.7 
wo  0.4 
tn  2.2 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Private  contribution. 

Aplite. 

Dried  at  100°. 
Near  grorud- 
ose. 

Q  36.5 
or  23. 4 
ab  23. 1 

ac  13. 4 
di  2. 6 
mt  1.9 

Varingskollen,  n.  Ha- 
kedalen,  Norway. 

G.  Sarnstron. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  66,  1890. 

Grorudite. 

Also  in  Eg.  Kg., 
I,  -p.  48,  1894. 

• 

Q  29.1 
or  14.  5 
ab  18. 9 

ac  26. 2 
ns  3. 9 
di  3.5 
hy  3.1 

Khagiar,  Cuddia 

Nera,  Pantelleria. 

H.  Forstner. 

H.  Forstner, 

Z.  K.,  VIII, 
p.  173,  1884. 

Pantellerite. 

SUBRANG  4.  DOSODIC. 

Q  31.4 
or  14. 5 
ab  25. 2 
an  0. 6 

di  9.8 
mt  11.7 

Near  Roztok,  Moldau- 
thal,  Bohemia. 

Strnad. 

J.  Klvana, 
cf.  N.  J.,  1898,  I, 
p.  485. 

Quartz-diorite 

(syenitic). 

Not  fresh. 

Q,  36.5 
or  16. 7 
ab28. 8 
an  3. 1 

di  4. 8 
wo  2.  7 
mt  5. 8 

Two  Mile  Flat,  Cud- 
gegong  River,  New 
South  Wales. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.,  N.  S.  W., 
XVI,  p.  44,  1883. 

Felsite. 

Dried  at  100°. 
MnO  high. 

SUBRANG  2.  DOPOTASSIC. 

SnOo  trace 

Q  34.7 
or  28. 4 
ab  8.4 
an  3.3 

C  9.4 

hylO.  5 
nit  3. 0 

Tamaya,  Chile. 

C.  Schwarz. 

v.  Groddeck, 

Z.D.G.  G.,  XXXIX, 
p.  252,  1887. 

Dike  rock. 

SUBRANG  3.  SODIPOTASSIC. 


Q  32.8 
or  18. 3 
ab  26. 2 
an  7. 2 

C  1.4 

hy  6. 9 
mt  4.2 
il  1.5 

Sudbury,  Ontario. 

T.  L.  Walker? 

T.  L.  Walker, 

Q.  J.  G.  S.,  LIII, 
p.  56,  1897. 

Granite. 

Sum  low. 

Q  33.0 
or  17.  8 
ab  17.8 
an  9.2 

C  4.8 

hy  5.9 
mt  1.  4 
hm  7.  5 

Wildsruff,  Saxony. 

W.  Bruhns. 

W.  Bruhns, 

Z.D.G.G.,  XXXVIII. 
p.  749,  1886. 

Mica-porphy- 

rite. 

Fe.20<,  high? 

FeO  low? 
A1203  high? 

SUBRANG  4.  DOSODIC. 


Q  32. 2  di  10. 6 

Baraboo  Bluffs,  Wis- 

W.  Daniels. 

S.  Weidmann, 

Quartz-kerato- 

MnO  high? 

or  11. 1  mt  2. 6 

ab  36.  2 

consin. 

B.  Un.  Wise., 

phyre. 

an  5. 0 

Sc.  Ser.  I,  p.  47,  1895. 

C  1.3 

SUBRANG  3.  SODIPOTASSIC.  ALMEROSE. 


Q  31.9  hy  12. 0 

Hovazo,  Cabode  Gata, 

J.  Savelsberg. 

A.  Osann, 

Cordierite- 

or  13. 9  mt  4. 4 

ab  15  7 

Almeria,  Spain. 

Z.  D.  G.  G.,  XL, 

andesite. 

an  12. 5 

p.  701,  1888. 

C  7.4 

SUBRANG  4.  DOSODIC.  SITKOSE. 


FeS2  0. 41 

NiO  trace 

SrO  trace 

Li20  trace 
Org.  0. 20 

Q  30.1  hy  13. 6 

or  10. 0  mt  0.  7 

ab  23. 6  il  1. 5 

an  14.2 

C  2.0 

Indian  River,  Sitka, 
Alaska. 

W.  F.  Hille- 
brand. 

G.  F.  Becker, 

18  A.  R.  U.S.G.S.III, 
p.  45,  1898. 

Diorite. 

220 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  LOSALANE — Continued. 


RANG  4.  DOCALCIC. 


No. 

Si02 

A1.A 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti()2 

pa 

MnO 

BaO 

Sum. 

Sp.  gr. 

1 

A3.  Ill 

64.38 

1.073 

14.  09 

.138 

6.10 

.038 

3.68 

.051 

2.  04 

.051 

4.  51 

.080 

0.55 

.009 

3.  72 

.039 

0.  82 

0.  33 

.005 

100.  22 

RANG  4.  DOCALCIC. 


1 

63.  05 

14.31 

1.32 

6.  65 

4.38 

3.  91 

2.06 

0.82 

2.  54 

100.  20 

A3.  Ill 

1.051 

.140 

.008 

.093 

.110 

.070 

.033 

.009 

2 

55.  39 

16.81 

9.87 

2.60 

3.  22 

6.03 

0.  83 

0.  62 

1.07 

0.  93 

2. 19 

0.69 

100.  25 

2.  78 

A?2.  II?G? 

.923 

.165 

.062 

.  036 

.081 

.107 

.013 

.006 

.026 

.005 

RANG  5.  PERCALCIC.  GORDONASE. 


1 

69.  87 

12.  02 

1.42 

3. 49 

2.30 

7.  86 

0.  66 

0. 11 

0.  89 

0. 18 

0.  43 

0.  69 

0. 17 

0. 16 

none 

100.  25 

Al.I 

1.165 

.118 

.009 

.049 

.058 

.140 

.010 

.001 

.009 

.001 

.002 

— 

CLASS  II.  DOSALANE. 


RANG  1.  PERALKALIC.  PANTELLERASE. 


1 

71.10 

11.39 

5.  33 

n.  d. 

1.54 

0.  08 

3.  95 

6.  37 

0.44 

0.  57 

0.05 

100.  82 

B2.  Ill 

1.185 

.112 

.033 

(.031) 

.039 

.001 

.064 

.067 

.007 

— 

• 

2 

70. 15 

10.  60 

5.  77 

1.  74 

0.  35 

0.  72 

5.  30 

4.  09 

trace 

0.65 

0.  52 

99.  89 

A2.  II 

1.169 

.104 

.036 

.024 

.009 

.013 

.085 

.043 

.008 

.007 

3 

66.  50 

10.  90 

9.  85 

2.  34 

0.  60 

0.64 

5.  56 

4.  54 

0.  20 

trace 

trace 

trace 

101.  23 

B2.  IV 

1.108 

.107 

.062 

.033 

.015 

.011 

.090 

.048 

— 

— 

— 

4 

61.  83 

14.80 

1.83 

5.31 

2.  69 

0.  73 

3.  57 

4.  54 

2.49 

0.  08 

1. 17 

0.23 

99.  55 

2.  656 

A2.  II 

1.031 

.145 

.011 

.074 

.067 

.012 

.058 

.048 

.014 

.002 

5 

66. 10 

13.  45 

6.30 

0.45 

0.  92 

0.  60 

5.42 

5.  04 

2. 10 

100.  38 

A3.  Ill 

1. 120 

.132 

.039 

.006 

.023 

.011 

.087 

.054 

6 

69.  61 

8.02 

7.17 

2.  83 

0.  65 

0.  88 

7. 47 

2.  88 

0.  74 

100. 25 

2.44 

A3.  Ill 

1.160 

.078 

.045 

.039 

.016 

.016 

.120 

.031 

7 

69.  02 

10.  09 

4.  42 

4.  56 

0.  76 

1.45 

6.  29 

3.  70 

n.  d. 

100. 58 

2.46 

A3.  Ill 

1.150 

.099 

.027 

.063 

.019 

.026 

.101 

.039 

RANG  1.  PERALKALIC. 

PANTELLERASE. 

1 

63.  56 

11.  72 

4.90 

1.  10 

3.  65 

4.  12 

6.44 

2.  30 

0.  81 

0.  79 

0. 18 

trace 

0.  24 

0.  01 

99.99 

Al.  I 

1. 059 

.115 

.030 

.015 

.091 

.073 

.104 

.024 

.002 

— 

.003 

— 

2 

66.  73 

12.  23 

1.31 

4. 18 

1.49 

3.  25 

6. 14 

2.53 

0.  62 

0.05 

0.  32 

0.  22 

99.46 

A2.  II 

1. 112 

.120 

.008 

.058 

.037 

.058 

.099 

.026 

.004 

.002 

3 

67.  89 

11.53 

4.51 

4.52 

0.  62 

1.  51 

5.  79 

3.  71 

0.  33 

100.  41 

2.  43 

A3.  Ill 

1.132 

.113 

.028 

.062 

.016 

.027 

.093 

.039 

4 

67.  48 

9.  70 

7.  42 

2.21 

0.  77 

1.45 

7.21 

2.94 

0.  96 

100. 14 

2.  68 

A3.  Ill 

1.125 

.095 

.046 

.030 

.019 

.026 

.116 

.031 

DOS  A  L  A  N E - PAN T K L  L  EROSE . 


221 


ORDER  3  QUARFELIC.  HISPAN ARE— Continued. 


SUBRANG  1.  PREPOTASSIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  33.7 
or  21.7 
ab  4.7 
an  22.2 

C  1.0 

hy  6.8 
mt  8.8 

Brockenrod,  Hesse. 

F.  Kutscher. 

C.  Chelius, 

Erl.  G.  Kt.,  Hesse, 

V.,  Bl.  Breusbach, 
p.  24,  1897. 

Granite. 

* 

• 

SUBRANG  3.  PRESODIC. 

SnOo 

CuO" 

0.22 

0. 94 

Q  27.8 
or  5.0 
ab  17. 3 
an  19. 5 

C  2.9 

hv  22. 2 
mt  1.9 

Burgstein,  n.  Klein- 
wenden,  FIrzgebirge, 
Saxony. 

Hilger. 

F.  v.  Sandberger, 

Sb.  Munch.  A.  K., 

XVIII, 

p.  444,  1888. 

Gabbro. 

Not  fresh. 

Q  32.6 
or  3.3 
ab  6. 8 
an  25. 6 

C  5.5 

hy  8.1 
mt  2.3 
il  4.0 
hm  8.3 

Frauenberg,  n.  Breit- 
first,  Hesse. 

R.  Wedel. 

R.  Wedel, 

Jb.  Pr.  G.  L-A.,  XI, 
p.  23,  1892. 

Trachydolerite. 

Alkalies  low? 
Fe.A  high? 

SUBRANG.  NOT  NEEDED. 

so3 

Cl 

S 

SrO 

LioO 

none 

none 

none 

none 

trace 

Q  45.7 
or  0. 6 
ab  5.2 
an  29. 7 

di  7. 7 
hv  6.3 
mt  2.1 
il  1.4 

Near  Sweden,  Gordon 
County,  Georgia. 

H.  N.  Stokes. 

A.  FI.  Brooks, 

B.  U.  S.  G.  S.  168, 
p.  55,  1900. 

Meta-quartz- 

diorite. 

ORDER  4. — QUARDOFELIC. — AUSTRARE. 


SUBRANG  3.  SODIPOTASSIC.  GRORUDOSE. 


Q  22.4 
or  37. 3 
ab  23. 6 

ac  8.8 
hy  7.0 
il  1.1 

Fort  Davis,  Apache 
Mountains,  Texas. 

A.  Osann. 

A.  Osann, 

T.  M.  P.  M.,  XV, 
p.  447,  1895. 

Liparite. 

Q  25.4 
or  23. 9 
ab  32. 0 

ac  11.1 
di  3.0 
mt  2. 6 
il  1.2 

Grussletten,  n. 

Grorud,  Christiania, 
Norway. 

V.  Schmelck. 

W.  C.  Brdgger, 

Eg.  Kg.,  I, 
p.  48,  1894. 

Grorudite. 

Center  of  dike. 

Q  18.8 
or  26. 7 
ab  30. 9 

ac  14.  3 
di  2.4 
hy  0.  6 
mt  7. 2 

Grussletten,  n. 

Grorud,  Christiania, 
Norway. 

V.  Schmelck. 

W.  C.  Brdgger, 

Eg-  Kg.,  I, 
p.  48,  1894. 

Grorudite. 

Bolder  of  dike. 

S03  0. 18 

Q  15.3 
or  26. 7 
ab  30. 4 
an  3.3 

C  2.8 

hyl3. 2 
mt  2.6 
il  2.2 

Siipplingen,  n.  Magde¬ 
burg,  Prussia. 

Hampe. 

F.  Klockmann, 

Jb.  Pr.  G.  L-A.,  XI, 
p.  159,  1892. 

Porphvrite. 

S03  for  S. 

Q.  15.5 
or  30. 0 
ab  40. 9 

ac  4. 2 
di  2.3 
hy  1.2 
mt  1.4 
hm  3.  8 

Holbak,  Siebenbiir- 
gen,  Hungary. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien., 
XLIX,  p.  566,  1899. 

Sanidinite. 

Q  24.8 
or  17.2 
ab  24. 6 

ac  20. 8 
ns  3. 5 
di  3.8 
hy  4. 8 

Khagiar,  Cuddia 
Nerar,  Pantelleria. 

H.  Forstner. 

H.  Forstner, 

Z.  K.,  VIII, 
p.  173,  1884. 

Pantellerite. 

CuO  0. 29 

Q  19.6 
or  21.7 
ab  31. 4 

ac  12. 1 
ns  1.7 
di  6.3 
hy  7.0 

Cuddia  Mida,  Pantel¬ 
leria. 

H.  Forstner. 

H.  Forstner, 

Z.  K.,  VIII, 
p.  182,  1884. 

Pantellerite. 

SUBRANG  4.  DOSODIC.  PANTELLEROSE. 


ZrO., 

Cl 

s 

CoO 

Cu 

Pb 

trace 

0. 06 
none 

0.08 

0. 03 
none 

Q  9.2 
or  13. 3 
at)  47.  7 

ac  6.0 
di  15.5 
hy  1.8 
mt  3. 5 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contrib. 

Hornblende- 

granitite- 

gneiss. 

Dried  at  110°. 

FeS2 

0.39 

Q  13.6 
or  14.5 
ab  49. 3 

ac  2. 3 
di  13.5 
hy  3.7 
mt  1. 3 

Wallbach,  Backofen- 
berg,  Hesse. 

W.  Sonne. 

C.  Chelius, 

Erl.  G.  K.  Hesse, 

V.  Bl.  Breusbach, 
p.  24,  1897. 

Granite. 

Q  16.9 
or  21.7 
ab  38. 8 

ac  8. 8 
di  6.5 
hy  5.3 
mt  2. 1 

Mte.  San  Elmo,  Pan¬ 
telleria. 

H.  Forstner. 

H.  Forstner, 

Z.  K.,  VIII, 
p.  186,  1884. 

Pantellerite. 

Q  17.4 
or  17.2 
ab  33. 5 

ac  21.3 
ns  0.8 
di  6.2 
hy  2.8 

Mte.  San  Elmo,  Pan¬ 
telleria. 

H.  Forstner. 

FI.  Forstner, 

Z.  K.,  VIII, 
p.  186,  1884. 

Pantellerite. 

222 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 

RANG  2.  DOMALKALIC.  DACASE. 


No. 

Si02 

A1203 

Fe2G3 

FeO 

MgO 

CaO 

Na2G 

K.,0 

H2Of 

H.,0— 

C02 

Ti02 

FA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

65.  63 

13.  85 

2.02 

2.  80 

2.  79 

3.  43 

1.84 

6.  25 

1. 17 

trace 

trace 

trace 

99.  77 

2.  864 

A3.  Ill 

1.094 

.136 

.013 

.039 

.070 

.060 

.029 

.067 

— 

— 

— 

2 

63.  25 

10.  37 

2.  77 

2.71 

9.  92 

1.24 

1. 55 

4.  90 

4.03 

0.34 

101.08 

2.  696 

B2.  Ill 

1.054 

.102 

.017 

.038 

.248 

.022 

.025 

.052 

.004 

RANG  2.  DOMALKALIC.  DACASE. 

it 

1 

64.  47 

10.51 

1.11 

7.37 

5.21 

3.  10 

2.  21 

3.63 

0.  75 

0. 18 

0.58 

0.  65 

0.  25 

0. 15 

0.  04 

100.  37 

Al.  I 

1.075 

.103 

.007 

.103 

.130 

.055 

.035 

.038 

.008 

.002 

.002 

— 

2 

62.  35 

13.  24 

3.52 

6.33 

0.  85 

3.  34 

2.  79 

3.95 

1.21 

0. 11 

1.18 

0.  57 

0.  08 

0. 16 

99.  68 

Al.  I 

1.039 

.130 

.022 

.088 

.021 

.059 

.045 

.012 

.014 

.004 

.001 

.001 

3 

57.98 

13.  58 

3.  11 

8.  68 

2.  87 

2.  01 

3.56 

3.  44 

2.  47 

1.75 

0.  29 

0.13 

0.  04 

99.91 

Al.  I 

.  966 

.134 

.020 

.121 

.072 

.036 

.  057 

.036 

.022 

.002 

.002 

— 

4 

61.09 

15.34 

5.  74 

3.  69 

1.33 

3.10 

3.  41 

3.  65 

1.80 

99. 15 

B3.  IV 

1.018 

.  150 

.035 

.051 

.033 

.055 

.  055 

.039 

5 

62. 18 

15.  77 

1.83 

2.44 

3.  55 

4. 13 

3.  92 

3.91 

0.  70 

0.  30 

0.  55 

0.  32 

trace 

0.  43 

100.  23 

Al.  I 

1.036 

.154 

.011 

.033 

.089 

.073 

.063 

.041 

.007 

.002 

— 

.003 

6 

59.24 

13.  84 

5.  46 

1.36 

4.  79 

5.  60 

3. 13 

4.  22 

2.  02 

none 

0.  22 

0.34 

trace 

trace 

100.  34 

Al.  I 

.971 

.136 

.034 

.019 

.120 

.100 

.050 

.045 

.003 

.002 

— 

7 

63.  97 

15.  78 

2.  35 

1.87 

2.  84 

3.  71 

4.  36 

4.01 

0.  49 

0.  09 

0.  48 

0.  40 

100.  40 

A2.  II 

1.066 

.155 

.015 

.026 

.071 

.055 

.070 

.043 

.006 

.003 

8 

63.  05 

15.58 

2.92 

2.  11 

1.70 

4. 15 

3.  77 

3.  66 

1.38 

0.  55 

0.  60 

0.  27 

0.12 

0. 13 

100. 06 

Al.  I 

1.051 

.153 

.018 

.030 

.043 

.074 

.061 

.039 

.007 

.002 

.002 

.001 

9 

60. 16 

13. 18 

8.  88 

3. 15 

1.03 

3.  89 

3.  42 

3.  53 

1.90 

0.  20 

trace 

0.22 

99.  56 

A2.  II 

1.003 

.129 

.055 

.044 

.026 

.070 

,  055 

.037 

.003 

— 

.003 

10 

65.00 

13.  73 

0.  44 

2. 19 

0.  82 

4. 43 

3.  70 

4.  82 

1.08 

3. 15 

0. 47 

0.08 

trace 

100. 12 

2.  622 

A2.II 

1.083 

.135 

.003 

.030 

.021 

.078 

.059 

.051 

.006 

.001 

11 

60.  96 

13.  93 

1.  56 

3.  65 

1.59 

3.98 

2.83 

4.  23 

2.14 

3.27 

1. 16 

0.  29 

trace 

99.  75 

2.  625 

A2.II 

1.016 

.137 

.010 

.051 

.040 

.071 

.045 

.045 

.014 

.002 

- — 

12 

64.  76 

17.06 

1.06 

3.  63 

2.  99 

2.  74 

3.  67 

3.  60 

1.74 

101.  25 

B3.  IV 

1.079 

.107 

.007 

.050 

.  075 

.049 

.059 

.038 

13 

62.  44 

15.  60 

2.09 

3.  43 

2.  11 

1.70 

3.  99 

4.  21 

2.  60 

0.62 

0.  88 

0. 16 

99.  95 

2.  652 

A2.II 

1.041 

.153 

.013 

.046 

.053 

.030 

.064 

.045 

.011 

.001 

14 

61.41 

14.  54 

1.96 

i 

5.80 

2.03 

1.33 

3.  86 

4.  68 

2.  48 

0.  88 

0.98 

0.26 

100.  21 

2.  663 

A2.II 

1.02C 

.143 

.012 

.080 

.051 

.024 

.062 

.050 

.012 

.002 

DOS  A  L  A  N  E - A  D  A  M  E;,  LOS  E . 


223 


ORDER  4.  QUARDOFELIC.  A IJSTR  ARE— Continued. 


SUBRANG  2.  DOPOTASSIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q.  19.3 
or  37. 3 
ab  15. 2 
an  11. 1 

di  4. 6 
by  8.2 
mt  3.0 

Follmersdorf,  Silesia. 

IL  Traube. 

H.  Traube,  N.  J.,  1890, 

I,  p.  212. 

Hornblende- 

syenite. 

Q  17.0 
or  28. 9 
ab  13. 1 
an  6.1 

C  0.3 

hy27. 0 
mt  3.9 
il  0.6 

Gierniger  Loch,  Ba¬ 
den. 

M.  Dittrich. 

F.  Schalch,  Sp.  Ivt.  Ba¬ 
den,  Bl.  Petersthal, 
p.  33,  1895. 

Quartz-mica- 

syenite.. 

Border  facies, 
Cf.  No.  67, 
liparose. 

SUBRANG  3 

SODIPOTASSIC. 

ADAMELLOSE. 

ZrO., 

S 

none 

0. 12 

Q  20.4 
or  21. 1 
ab  18. 3 
an  8.3 

di  5.7 
hy21. 8 
mt  1.6 
il  1.2 

Fort  Ann  Quadr.,  Es¬ 
sex  County,  New 
York. 

W.  F.  blille- 
brand. 

J.  F.  Kemp, 

Priv.  contrib. 

Syenite. 

Cr.,03 

NiO 

SrO 

LLO 

none 

none 

trace 

trace 

Q  21.5 
or  23.4 
ab  23. 6 
an  12. 0 

hy  9.1 
mt  5. 1 
il  2. 2 
ap  1.3 

Near  Banner’s  Elk, 
Watauga  County, 
North  Carolina. 

LI.  N.  Stokes. 

A.  Keith, 

B.  U.  S.  G.  S.  168, 
p.  52,  1900. 

Rhyolite. 

SrO 

LioO 

trace 

trace 

Q  11.1 
or  20. 0 
ab  29. 9 
an  10.0 

C  0.5 

by  17. 7 
mt  8.0 
il  3.4 

Pigeon  Point,  Minne¬ 
sota. 

W.  F.  Hille- 
brand. 

• 

W.  S.  Bayley, 

A.  J.  S.,  XXXVII, 
p.  61,  1889. 

Quartz-diorite. 

Dried  at  150°. 
Also  in  B.  U.  S. 
G.  S.  109, 
p.  63,  1893. 

Q  17.7 
or  21.2 
ab  28. 8 
an  15. 3 

hy  5.4 
mt  8. 1 

Pigeon  Point,  Minne¬ 
sota. 

Dodge  and  Si- 
dener. 

M.  E.  Wadsworth, 

B.  G.  Nh.  S.  Minn.  2, 
p.  82,  1887. 

Gabbro? 

so3 

Cl 

SrO 

trace 

0.04 

0.16 

Q  11.2 
or  22. 8 
ab  33. 0 
an  13. 9 

di  5.3 
hy  8.1 
mt  2.  6 
il  1.1 

Steamboat  Mountain, 
Little  Belt  Moun¬ 
tains,  Montana. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.  R.  U.  S.  G.  S., 
Ill,  p.  517,  1900. 

Diorite- por¬ 
phyry. 

so3 

Cl 

SrO 

0. 08 

0.04 

none 

Q  9.5 
or  25. 0 
ab  26. 2 
an  11. 4 

di  11.2 
by  7.0 
mt  3.  9 
il  0.3 
hm  2. 7 
ap  0. 6 

Willow  Creek,  High- 
wood  Mountains, 
Montana. 

Hurlbut  and 
Barnes. 

L.  Y.  Pirsson, 

B.  U.  S.  G.  S.  148, 
p.  152,  1897. 

Trachy-andes- 
itic  breccia. 

NiO 

trace 

Q  12.9 
or  23. 9 
ab  36. 7 
an  11. 7 

di  2.9 
hy  6.5 
mt  3.5 
il  0.9 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Nat.  Park. 

W.  H.  Mel¬ 
ville. 

J.  P.  Iddings, 

M.U.S.G.  S.,  XXXII, 
p.  261,  1889. 

Quartz-mica- 

diorite. 

SrO 

Li20 

0. 07 
trace 

Q  16.6 
or  21.7 
ab  32. 0 
an  14. 7 

di  4. 7 
hy  2.7 
mt  4. 2 
il  1.1 

Cliff  Creek,  West  Elk 
Mountains,  Colo¬ 
rado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

14  A.  R.  U.  S.  G.  S., 
11,  p.  227,  1894. 

Hornblende- 

mica-porphy- 

rite. 

Q  19.1 
or  20. 6 
ab  28. 8 
an  10. 3 

di  5.5 
wo  0.8 
mtl0.2 
hm  1. 7 

Svardfall,  Brefven, 
Sweden. 

K.  Winge. 

K.  Winge, 

G.  F.  F.,  XVIII, 
p.  195,  1896. 

Monzonite. 

so3 

0. 21 

Q  16.7 
or  28. 4 
a  b  30. 9 
an  7. 0 

di  9.7 
wo  1.3 
mt  0.7 
il  0.9 

Norheim,  Nahethal, 
Rhenish  Prussia. 

■ 

Hesse. 

K.  A.  Lossen, 

Z.  D.  G.  G.,  XLIII, 
p.  537,  1891. 

Quartz- 

porphyry. 

S03  for  S. 

Not  fresh. 

S03 

0.16 

Q  17.5 
or  25. 0 
ab  23. 6 
an  13. 1 

di  5. 7 
hy  4.8 
mt  2.3 
il  2. 2 

Weiselberge,  n.  Ober- 
kirchen,  Rhenish 
Prussia. 

K.  Bottcher. 

K.  A.  Lossen, 

Z.  D.  G.  G.,  XLIII, 
p.  537,  1891. 

Porphyrite. 

S03  for  S. 

Not  fresh. 

Q  16.9 
or  21. 1 
ab  30. 9 
an  13. 6 

C  2.1 

hy  13.2 
mt  1.6 

Lippenhof ,  n.  Try  berg, 
Schwarzwald,  Ba¬ 
den. 

Gattermann. 

G.  H.  Williams, 

N.  J.  B.  B.,II, 
p.  624,  1883. 

Mica-diorite. 

Not  in  Roth. 

so3 

0.12 

Q  15. 1 
or  25. 0 
ab33.5 
an  8.3 

C  1.4 

hy  8.4 
mt  3.0 
il  1.5 

Bullerberg, 
n.  Magdeburg, 
Prussia. 

Hesse. 

F.  Klockmann, 

Jb.Pr.  G.L-A.,  1890, 
XI,  p.  210,  1892. 

Augite- 

porphyrite. 

S03  for  S. 

so3 

trace 

Q  11.6 
or  27. 8 
ab  32.5 
an  6.7 

C  1.1 

hy  12.4 
mt  2.8 
il  1.8 

Altenhausen, 
n.  Magdeburg, 
Prussia. 

G..F.  Steffen. 

F.  Klockmann, 

Jb.  Pr.  G.L-A.,  1890, 
XI,  p.  159,  1892. 

Porphyrite. 

L 

224 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 


RANG  2.  DOMALKALIC.  DACASE— Continued. 


No. 

Si02 

A1A 

Fe.A 

FeO 

MgO 

CaO 

Na20 

k2o 

H20+ 

H20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

15 

58.  58 

15.  26 

5.61 

3.  28 

3.  02 

0.  98 

2.  45 

3.80 

5. 14 

1.38 

0.37 

99.  94 

2.674 

A2.II 

.976 

.150 

.035 

.046 

.076 

.018 

.040 

.040 

.017 

.003 

16 

57. 12 

15.  40 

2.  80 

4.39 

5.  13 

2.  24 

2.  84 

3.  77 

4.  35 

0.  75 

1. 17 

0.  22 

100.  26 

2.  625 

A2.  II 

.952 

.151 

.017 

.061 

.128 

.040 

.046 

.040 

.014 

.002 

17 

55.  47 

13.  86 

5.  98 

2.64 

3.65 

2.  75 

3.  63 

4.  35 

2.94 

3.  25 

1. 19 

0.  22 

100.  07 

2.683 

A2.II 

.925 

.136 

.037 

.037 

.091 

.049 

.058 

.047 

.014 

.002 

18 

62.51 

12.  78 

2.  56 

4.  76 

3. 33 

4.  76 

2.71 

4.  81 

1.53 

0.  81 

trace 

trace 

100.  59 

2.  901 

A2.II 

1.042 

.125 

.016 

.  066 

.083 

.085 

.043 

.051 

.010 

— 

— 

19 

67.94 

14.  86 

1.60 

3.  62 

1.91 

2.  02 

2.  52 

4.  01 

1.57 

100.  05 

A3.  Ill 

1.132 

.146 

.010 

.050 

.048 

.036 

.040 

.042 

20 

65.  02 

15.  23 

1.01 

3. 12 

1.  84 

2.  88 

2.  92 

6.09 

2.15 

trace 

0.05 

100.  31 

A3.  Ill 

1.084 

.149 

.006 

.043 

.046 

.051 

.047 

.065 

. 

_  ■ 

.001 

21 

61.  45 

14.  36 

2.  75 

4.  61 

2.  73 

4.34 

3.  98 

3.  75 

0.  87 

• 

1.37 

100.  21 

A3.  Ill 

1.024 

.141 

.017 

.064 

.068 

.077 

.064 

.040 

.017 

• 

•» 

RANG  2.  DOMALKALIC.  DACASE. 

1 

67.  76 

14.00 

n.  d. 

5.18 

1.00 

4.  28 

5.  22 

1.19 

1.01 

0. 46 

0. 19 

trace 

100.  29 

2.  709 

A3.  Ill 

1. 129 

.137 

— 

.072 

.025 

.077 

.084 

.013 

.006 

.001 

— 

2 

64.  95 

15. 44 

2.  02 

1.60 

2.  65 

3.  07 

4.  25 

3.  87 

0.  85 

0.26 

0.39 

0.25 

trace 

0.  35 

100. 11 

Al.  I 

1.083 

.151 

.013 

.  022 

.066 

.055 

.069 

.041 

.005 

.002 

— 

.002 

3 

64.  47 

15.  45 

2.  25 

2.  25 

2.  68 

3.  63 

4.  54 

3. 19 

0,  63 

0.  05 

0.  75 

0.  22 

0.  06 

0.  23 

100. 44 

Al.  I 

1.075 

.151 

.014 

.031 

.067 

.065 

.073 

.034 

.009 

.002 

.001 

.002 

4 

65.50 

14.94 

1.72 

2.  27 

2.  97 

2. 33 

5.  46 

2.  76 

1.13 

0.24 

0. 45 

0.  09 

0.  20 

0. 13 

100. 25 

Al.  I 

1.092 

.146 

.011 

.032 

.074 

.042 

.088 

.029 

.006 

.001 

.003 

.001 

5 

61.56 

14.  73 

4. 47 

1.23 

3.  57 

4.  87 

5.10 

2.24 

1.42 

0.  87 

0.04 

0.34 

100. 44 

A2.  II 

1.026 

.144 

.028 

.017 

.089 

.087 

.082 

.024 

.011 

— 

.005 

6 

63. 18 

16.47 

2.36 

2.  28 

1.33 

4.  77 

4.  40 

2.  93 

0.  60 

0.  27 

0.  60 

0.  28 

0. 15 

0. 15 

99.  86 

Al.  I 

1.053 

.  162 

.015 

.032 

.033 

.085 

.071 

.031 

.008 

.002 

.002 

.001 

7 

62.  92 

14.29 

0.  84 

4.  66 

3. 14 

2.  72 

4.  30 

1.39 

2.  84 

0.  22 

1.24 

0.  84 

0.  13 

0. 15 

0. 10 

100. 10 

Al  I 

1  057 

.140 

.005 

.065 

.079 

.049 

.068 

.015 

.010 

.001 

.002 

.001 

8 

68.  58 

13.  04 

0.  26 

3.  40 

1.01 

3.  22 

4.94 

1.90 

1.00 

0. 16 

1.31 

0.57 

0.  20 

0. 15 

0. 10 

99.  99 

Al.  I 

1.143 

.128 

.002 

.048 

.025 

.  057 

.079 

.020 

.007 

.001 

.002 

.001 

9 

62. 16 

16. 12 

3.39 

1.85 

2.  93 

4.  59 

5.  20 

2.29 

1.12 

trace 

0.  23 

0.16 

0.  20 

0.  07 

100.  36 

Al.  1 

1.036 

.158 

.021 

.026 

.073 

.082 

.084 

.024 

.003 

.001 

.003 

— 

10 

63.  50 

15.  34 

3.  22 

1.71 

2.50 

4,31 

4.  84 

2.75 

1.99 

100.  16 

A3  III 

1.058 

.150 

.020 

.024 

.063 

.077 

.077 

.030 

DOSALANE — DACOSE. 


225 


ORDER  4.  QUA RDOFELIC.  AUSTRARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  ADAMKLLOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

0.07 

Q  23.0 
or  22. 2 
ab  21. 0 
an  5.0 

C  5.3 

hy  7. 6 
nit  6.7 
il  2.6 
hm  1. 0 

Zissendorfer  Berg, 
n.  Magdeburg, 
Prussia. 

Fischer. 

F.  Klockmann, 

Jb.  Pr.  G.  L- A.,  1890, 
XI,  p.  210,  1892. 

Porphyrite. 

S03  for  S. 

Not  fresh. 

so3 

0.08 

Q  11.9 
or  22. 2 
ab  24. 1 
an  11. 1 

C  2.6 

hyl6. 7 
nit  3.9 
il  2. 2 

Bosenberg, 

Harz  Mountains. 

Jacobs. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A., 

X,  p.  266,  1892. 

Porphyrite. 

S03  for  S. 

Not  fresh. 

so3 

0.14 

Q  14.6 
or  26. 1 
ab  19. 9 
an  8.6 

di  3.9 
hy  7.3 
mt  5. 3 
il  2.2 
hm  2. 2 

Spiemont, 

Harz  Mountains. 

Iv.  Bottcher. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.  1889, 

X,  p.  266,  1892. 

Porphyrite. 

S03  for  S. 

Not  fresh. 

Q  14.3 
or  28. 4 
ab  22. 5 
an  8.6 

di  12.  5 
hy  7.4 
mt  3. 7 
il  1. 5 

Reichenstein,  Silesia. 

H.  Traube. 

11.  Traube, 

N.  J.,  1890,  I, 

p.  206. 

Hornblende- 

syenite. 

Q  28.8 
or  23.4 
ab  21. 0 
an  10. 0 

C  2.9 

hy  10.1 
mt  2.3 

Raffernertobel, 
n.  Meran,  Tyrol. 

M.  Dittrich. 

E.  Kiinzli, 

T.  M.  P.  M.,  XVIII, 
p.  418,  1899. 

Granitite- 

gneiss. 

Q  14.5 
or  36. 1 
ab  24. 6 
an  10. 3 

di  3.2 
hy  7.8 
mt  1.4 

Monte  Amiata, 
Tuscany. 

L.  Ricciardi. 

L.  Ricciardi, 

Gaz.  Chim.  Ital., 
XVIII,  1888. 

Trachyte. 

Q  11.3 
or  22. 2 
ab  33. 5 
an  10. 3 

di  9.1 
hy  6.4 
mt  3. 9 
il  2.6 

Latitude  36°  3CK  N., 
longitude  80°  E., 
Thibet. 

H.  Backstrom. 

H.  Backstrom, 

Pet.  Mit.  Erg.  Hft., 

No.  131,  p.  2, 1900? 

Bronzite- 
an  desite. 

SUBRANG  4.  DOSODIC. 

DACOSE. 

Q  20.3 
or  7.2 
ab  44. 0 
an  11.1 

di  7.8 
hy  6.8 
il  0.8 

Sudbury,  Ontario. 

Not  stated. 

T.  L.  Walker, 

Q.  J.  G.  S.,  L1II, 
p.  56,  1897. 

Granite. 

Nearly  in  SR  5 

so3 

1  Cl 

SrO 

0. 02 

0.04 

0.10 

Q  15.4 
or  22. 8 
ab  36. 2 
an  11.4 

di  3.2 
hy  5.7 
mt  3. 0 
il  0.8 

Bear  Park,  Little 

Belt  Mountains, 
Montana. 

H.  N.  Stokes. 

L.  V  Pirsson, 

20  A.  R.  IT.  S.  G.  S., 
Ill,  p.  519,  1900. 

Diorite-syenite- 

porphyry. 

SrO 

0.04 

Q  14.3 
or  18. 9 
ab  38. 3 
an  12. 2 

di  4.8 
hy  6.0 
nit  3. 2 
il  1.4 

Big  Timber  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  142,  1897. 

Hornblende- 

granitite. 

so3 

!  SrO 

0.06 

trace 

Q  13.7 
or  16. 1 
ab46. 1 
an  8. 1 

di  3.1 
hy  8.  0 
mt  2. 6 
il  0.9 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

T.  M.  Chatard. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  648,  1891. 

Hornblende- 

mica-ande¬ 

site. 

Q.  10.6 
or  13. 3 
ab  43. 0 
an  10. 6 

di  10.7 
hy  4. 0 
mt  1.  6 
il  1.7 
hm3. 4 

Tower  Creek,  Yel¬ 
lowstone  National 
Park. 

F.  A.  Gooch. 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  272,  1899. 

'  Hornblende- 
andesite. 

SrO 

1  .  Li20 

0.09 

trace 

Q  15.2 
or  17.2 
ab  37. 2 
an  16.  7 

di  5.7 
hy  1.7 
mt  3.5 
il  1.2 

Sierra  Carrizo,  Ari¬ 
zona. 

W.  F.  Hille- 
brand. 

W.  Cross, 

14  A.  R.  U.  S.  G.  S., 
p.  165,  1894. 

Hornblende- 

porphyrite. 

FeS2 

NiO 

SrO 

Li20 

0.32 

trace 

trace 

trace 

Q  19.9 
or  8.3 
ab  35. 6 
an  13. 6 

C  0.8 

hyl4. 5 
mt  1. 2 
il  1.5 
pr  0. 3 

Bear  Creek,  Cook’s 
Inlet,  Alaska. 

W.  F.  Hille- 
brand. 

G.  F.  Becker, 

18  A.  R.  U.  S.G.  S., 
Ill,  p.  45,  1898. 

Diorite. 

FeS» 

SrO 

0. 15 
trace 

Q  23.9 
or  11. 1 
ab41.4 
an  8. 1 

di  6.7 
hy  4. 3 
mt  0,  5 
il  1.1 

Near  Latrobe, 
Eldorado  County, 
California. 

W.  F.  Hille- 
brand. 

II.  W.  Turner, 

14  A.  R.  U.  S.  G.  S., 

II,  p.  473,  1894. 

Porphyrite. 

Also  in  J.  G., 
Ill,  p.  403, 
1895. 

ZrO> 

Cl 

FeSa 

CoO 

Cu 

Pb 

trace 

0.02 

trace 

0.01 

0. 02 
none 

Q  10.7 
or  13. 3 
ab  44. 0 
an  13. 9 

di  7.1 
hy  4.6 
mt  4.  9 

Mazaruni  District, 
Ilritisb  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contrib. 

Ilornblende- 

granitite. 

Dried  at  100°. 
Near  akerose. 

Q  13.7 
or  16.7 
ab  10.  7 
an  12. 0 

di  6.3 
hy  3.3 
mt  4. 6 

Chiles  Volcano, 
Colombia. 

R.  Kiich. 

R.  Kiich, 

G.  Stud.  Colomb., 

I,  p.  172,  1892. 

Pyroxene- 
horn  blende- 
dacite. 

1 

14128— No.  14—03 - 15 


226 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOS ALANE— Continued. 

RANG  2.  DOMALKALIC.  DACASE — Continued. 


No. 

Si02 

A1A 

Fe202 

FeO 

MgO 

CaO 

Na,20 

k2o 

h2o+ 

A20- 

CO, 

TiO, 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

11 

63.  49 

12.  42 

6.41 

1.34 

1.32 

4.17 

4.  90 

X.  78 

2.  88 

trace 

0.  85 

99.  56 

2.  52 

A3.  Ill 

1.058 

.121 

.040 

.018 

.033 

.075 

.079 

.019 

— 

.012 

15° 

12 

63.  41 

16.  92 

2.  67 

2.  96 

2.08 

4.  32 

5. 18 

2.  36 

0.  64 

100. 54 

A3.  Ill 

1. 057 

.166 

.017 

.041 

.052 

.077 

.084 

.024 

13 

64. 17 

14.  73 

0.  57 

5.  83 

2.09 

3.  76 

3.81 

3.  35 

2.  24 

100. 55 

A3.  Ill 

1.070 

.144 

.004 

.080 

.042 

.067 

.061 

.036 

14 

64.  94 

17. 50 

0.  69 

3.94 

2.  83 

2.59 

3.44 

3.11 

1.36 

100.  40 

A3.  Ill 

1.082 

.172 

.004 

.055 

.071 

.047 

.055 

.032 

15 

59.  94 

16.  11 

4.  29 

2.  68 

3.  02 

1.74 

4.  78 

2.  55 

3.  07 

0.40 

1.44 

0.24 

100. 43 

2.  651 

A2.  II 

.999 

.158 

.027 

.038 

.076 

.030 

.077 

.027 

.017 

.002 

16 

61.  31 

16.  34 

2.  23 

3.17 

2.  07 

2.43 

4.  86 

2.96 

3.  08 

1.08 

0.  77 

0.  27 

100.  93 

2.  624 

A2.  II 

1.022 

.160 

.014 

.044 

.052 

.043 

.078 

.032 

.009 

002 

17 

63.94 

•13.  05 

2.  45 

7.52 

0.  43 

3.35 

4.  45 

3.68 

0.  34 

0.93 

0. 12 

100.  26 

A3.  Ill 

1. 006 

.128 

.015 

.104 

.011 

.060 

.072 

.039 

.006 

.002 

18 

67.  38 

15.  46 

3.  66 

n.  d. 

1.03 

4.  72 

4.98 

2. 14 

0.  41 

0.  04 

0.  29 

100. 11 

A4.  IV 

1.123 

.151 

0.23 

(.046) 

.026 

.084 

.080 

.  023 

— 

.004 

19 

64.  06 

15.  25 

2.  72 

4.  30 

1.30 

3.  93 

4.37 

2.  78 

1.70 

0. 18 

100.  59 

2.  352 

A3.  Ill 

1.068 

.149 

.017 

.059 

.032 

.070 

.070 

.031 

.  002 

• 

RANG  2.  DOMALKALIC.  DACASE. 


1 

64.  49 

14.  26 

3.91  ' 

3.  28 

1.25 

3.  67 

6.  60 

0.  40 

1.22 

99.08 

B3.  IV 

1. 075 

.140 

.  025 

.046 

.031 

.066 

.106 

.004 

RANG  3.  ALKALICALCIC.  TONALASE. 


1 

57.  33 

15.31 

3.  39 

8. 19 

4.  36 

3.95 

1.22 

4.57 

1.80 

100. 12 

A3.  Ill 

.956 

.150 

.021 

.114 

.109 

.071 

.020 

.049 

• 

2 

54.  36 

14.  71 

1.89 

6.  11 

7.  92 

2.  42 

1.18 

4.  62 

4.05 

0.  47 

0.  96 

0.  52 

99.  64 

2.  755 

A2.  II 

.906 

.144 

.012 

.085 

.198 

.043 

.019 

.049 

.012 

.003 

3 

58.46 

14.  38 

3.  75 

6.  67 

1.59 

5.24 

1.33 

3.  40 

2.  03 

3.  40 

0.  36 

(100.61) 

A3.  Ill  F 

.974 

.141 

.024 

.093 

.040 

.093 

.021 

.036 

.005 

100. 45 

DOSALANE - SR  2  OF  TONALASE. 


227 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 


SUBRANG  4.  DOSODIC.  DACOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03  trace 

Cl  trace 

CuO  trace 

Q  20.3 
or  10. 6 
ab  41.4 
an  6.4 

di  7.2 
wo  2. 2 
mt  4.2 
hm  3. 5 

Yate  Volcano,  Pata¬ 
gonia. 

H.  Ziegenspeck. 

H.  Ziegenspeck, 

In.  Diss.  Jena, 
p.  46,  1883. 

Augite- 

andesite. 

Q,  11.9 
or  13.3 
ab  44. 0 
an  16. 1 

di  4. 5 
by  6.2 
mt  3.  9 

Inchnadarnpf, 

Assynt,  Scotland. 

J.  J.  H.  Teall. 

J.  J.  H.  Teall, 

G.  M.,  XXIII, 
p.  350,  1886. 

Hornblende- 

porphyrite. 

Q  15.4 
or  20. 0 
ab  32. 0 
an  13. 1 

di  4.7 
hy  11.8 
mt  0.  9 

Foglo,  Aland,  Fin¬ 
land. 

H.  Berghell. 

B.  Frosterus, 

G.  F.  F.,  XV., 
p.  285,  1893. 

Granite. 

Near  adam- 
ellose. 

Q  20.6 
or  17. 8 
ab  28. 8 
an  13.1 

C  3.7 

hyl3.8 
mt  0.  9 

Lippenhof,  n.  Try- 
berg,  Schwarzwald, 
Baden. 

G.  H.  Williams. 

G.  H.  Williams, 

N.  J.  B.  B.,  II, 
p.  624,  1883. 

Mica-diorite. 

S03  0. 17 

. 

Q  14.3 
or  15.0 
ab  40. 3 
an  8. 3 

C  2.4 

hy  7.6 
mt  4. 9 
il  2. 6 
hml.O 

Gerach,  Fischbach 
Thai,  Rhenish 
Prussia. 

K.  Gremse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  290,  1892. 

Porphyrite. 

S03  for  S. 

S03  0. 14 

Org  0. 02 

Q  12.2 
or  17. 8 
ab  40.  9 
an  12. 0 

C  0.7 

hy  8.0 
mt  3.2 
il  1.4 

Horst,  Blatt  Lebach, 
Prussia. 

K.  Gremse. 

Weiss  &  Greve, 

Erl.  G.  K.  Pr.,  Bl. 
Lebach,  p.  32,  1889. 

Hornblende- 

porphyrite. 

S03  for  S. 

Q,  14.5 
or  21.  7 
ab37. 7 
an  4.7 

di  6.1 
hy  9.7 
mt  3. 5 
ap  1.  9 

Bomb,  Eruption 
1889-9,  Vulcano, 
Alolian  Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min.,  Ill, 
p.  107,  1892. 

Andesite. 

Near  pantel- 
lerose. 

Q  18.1 
or  12.8 
ab  41. 9 
an  13. 3 

di  8.6 
hy  4.2 

Bomb,  Eruption 
1888-9,  Vulcano, 
TEolian  Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min.,  Ill, 
p.  107,  1892. 

Andesite. 

Q  15.9 
or  17.2 
ab  36. 7 
an  13. 3 

di  5.0 
hy  6.1 
mt  3.  9 

Kakoperato,  Aegina, 
Greece. 

A.  Rbhrig. 

H.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Hornblende- 

dacite. 

SUBRANG  5.  PERSODIC. 

Q  16.0 
or  2. 2 
ab  55. 5 
an  8.3 

di  8.1 
hy  1.9 
mt  5.8 

White  Island,  New 
Zealand. 

W.  A.  McLeod. 

W.  A.  McLeod, 

Tr.  N.  Z.  Inst.,  XXXI, 
p.  488,  1899. 

Hypersthene- 

andesite. 

Sum  low. 

SUBRANG  2.  DOPOTASSIC. 


LLO 

trace 

Q  11.9 
or  27.2 
ab  10. 5 
an  19. 7 

C  1.0 

hy  23. 2 
mt  4.9 

Dorsey’s  Run,  How¬ 
ard  County,  Mary¬ 
land. 

W.  F.  Hille- 
brand. 

C.  R.  Keves, 

15  A.  R.  U.  S.  G.  S., 
p.  722,  1895. 

Inclusion  in 
granite. 

- 

so3 

c 

0. 38 

0.05 

Q  9.2 
or  27.2 
ab  10. 0 
an  12. 0 

C  3.3 

hy27. 8 
mt  2.8 
il  1.8 
ap  1. 1 

Michaelstein,  Lower 
Harz  Mountains. 

F.  Steffen. 

M.  Koch, 

Jb.  Pr.  G.  L-A.  1886, 
VII,  p.  68,  1887. 

Iversantite. 

S03  for  S. 

Q  20.8 
or  20.0 
ab  11.0 
an  23. 4 

di  2.2 
hy  12. 0 
mt  5.6 

Dolanky,  Molclau- 
thal,  Bohemia. 

Plaminek. 

J.  Klvana, 

Cf.  N.  J.,  1898,  I, 
p.  485. 

Dioritic  quartz- 
syenite. 

Not  fresh. 

228 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS. 


CLASS  II.  DOSALANE— Continued. 

RANG  3.  ALKALICALCIC.  TONALASE. 


No. 

Si0.2 

Al.A 

Fe20;1 

FeO 

MgO 

CaO 

Na/) 

k2o 

h2o+ 

H,0— 

co2 

TiO, 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

56.  20 

15.46 

1.54 

9.  76 

1.83 

5.39 

2.  78 

2.56 

0.  59 

0. 16 

none 

2.  25 

1.13 

0.13 

0. 17 

100.  02 

Al.  I 

.937 

.151 

.010 

.137 

.046 

.096 

.045 

.027 

.027 

.008 

.002 

.001 

2 

58.  77 

13. 12 

5.  45 

6.  87 

4.  93 

5.  99 

1.94 

2.  83 

0.  45 

100. 35 

• 

A3.  Ill 

.980 

.129 

.034 

.096 

.123 

.107 

.031 

.030 

3 

64.  34 

15.  72 

1.62 

2.94 

2. 17 

4.  24 

2.  76 

4.  04 

0.  76 

0.  25 

0.  03 

0.  53 

0. 14 

0. 12 

0.  06 

99.81 

Al.  I 

1.072 

.154 

-.010 

.041 

.054 

.076 

.044 

.042 

.007 

.001 

.002 

— 

4 

64. 17 

15.  25 

2. 16 

2.  98 

2.  60 

4.  24 

2.62 

4.34 

0.  65 

0. 16 

none 

0.  67 

0. 16 

0.  04 

0. 07 

100.  18 

Al.  I 

1.070 

.149 

.014 

.042 

.066 

.076 

.042 

.046 

.008 

.001 

.001 

.001 

5 

63.  87 

15.  39 

1.93 

3.  08 

2.  23 

4.  30 

2.  76 

4. 18 

0.  69 

0. 19 

0. 15 

0.  65 

0.17 

0. 11 

0.  07 

99.  92 

Al.  I 

1.065 

.151 

.012 

.043 

.056 

.077 

.044 

.045 

.008 

• 

.001 

.002 

.001 

6 

61.64 

15.  63 

3.  39 

2.69 

2.  82 

4.90 

2.  64 

3.  72 

0.91 

0.28 

none 

0.  71 

0.21 

0.04 

0.  08 

99.  70 

Al.  I 

1.027 

.153 

.021 

.038 

.072 

.087 

.042 

.039 

.009 

.002 

.001 

.001 

7 

60. 17 

15.  78 

3.  42 

2.  95 

2.52 

4.  69 

2.  96 

4.16 

1.23 

0.  25 

0.  87 

0.  40 

0. 11 

0. 14 

99.  79 

Al.  I 

1.003 

.154 

.021 

.042 

.063 

.084 

.048 

.045 

.011 

.003 

.002 

.001 

8 

59.  76 

15.  79 

3.  77 

3.30 

2.16 

3.  88 

3.  01 

4.40 

1. 11 

0.  31 

0.  78 

0.  87 

0.  42 

.  0. 12 

0.  09 

99.  83 

Al.  I 

.996 

.155 

.024 

.046 

.054 

.070 

.048 

.047 

.011 

.003 

.002 

.001 

9 

57.  80 

16. 43 

1.62 

6.  51 

4. 14 

7.21 

2.35 

2.  29 

0.31 

0. 11 

none 

0.  70 

0. 19 

0. 18 

0.  09 

100.  03 

Al.  I 

.963 

.161 

.010 

.090 

.104 

.128 

.038 

.024 

.009 

.001 

.003 

.001 

10 

57.  26 

16.51 

3.  27 

5. 19 

3.41 

6.  69 

2.  65 

2.93 

0.  95 

0.  20 

0.  53 

0.30 

0. 18 

0. 10 

100.  23 

Al.  I 

.954 

.162 

.020 

.072 

.085 

.120 

.043 

.031 

.007 

.002 

.003 

.001 

11 

63.  85 

15.  84 

1.91 

2.  75 

2.07 

4.  76 

3.  29 

3.  08 

1.65 

0.  28 

0.  58 

0. 13 

0.  07 

0.  06 

100.  36 

Al.  I 

1.064 

.155 

.012 

.039 

.  052 

.  085 

.053 

.033 

.007 

.001 

.001 

— 

12 

58.  55 

15.48 

3.  93 

2.  07 

3.  60 

6.44 

1.69 

3.  99 

3.  62 

0.  83 

0.30 

0.11 

100. 61 

A2.  II 

.  976 

.152 

.024 

.030 

.090 

.115 

.027 

.042 

.010 

.002 

.002 

13 

62.6 

17.  7 

1.2 

3.3 

3.4 

4.6 

2.5 

3.7 

0.  7 

99.7 

2.  76 

A3.  Ill 

1.043 

.174 

.007 

.046 

.085 

.082 

.040 

.039 

14 

55.  95 

19.  35 

4.60 

3.  00 

2.  52 

5.40 

2.86 

2.64 

1.05 

2.  80 

0.  21 

100.38 

B2.  Ill 

.933 

.190 

.029 

.042 

.063 

.096 

.046 

.028 

.034 

.003 

15 

57.69 

14.  48 

4.40 

1.71 

5.63 

5.  42 

2.  73 

2.  94 

3.  44 

0. 11 

0.  82 

0.  29 

99.  88 

2.  66 

A2.  II 

.962 

.142 

.027 

.024 

.141 

.096 

.043 

.031 

.010 

.002 

16 

57.64 

14.  49 

3.17 

.5.  81 

4.62 

8.  02 

2. 13 

2.32 

1.77 

0.13 

0.31 

0.  23 

100.  64 

2.  837 

A2.  II 

.961 

.142 

.020 

.080 

.116 

.143 

.034 

.024 

.004 

.002 

17 

57.28 

15.  98 

2.  35 

5.  06 

5.52 

2.84 

2.37 

3.  42 

4.22 

0.41 

1.01 

0.18 

100.64 

2.  653 

A2.  II 

.  955 

.  157 

.  015 

.071 

.138 

.050 

.039 

.036 

.012 

.001 

18 

56.91 

15.54 

2.  32 

4.98 

5.  71 

5.80 

2. 45 

2.  74 

2.29 

1.09 

0.  21 

100. 19 

2.  791 

A2.  II 

.959 

.152 

.014 

.070 

.143 

.103 

.040 

.029 

.013 

.002 

DOSALANE — HARZOSE. 


229 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  HARZOSE. 


Inc 

usive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so. 

Cl 

F 

s 

SrO 

trace 

trace 

trace 

0.07 

trace 

Q  12.1 
or  14.0 
ab  23. 6 
an  22. 0 

hyl7. 8 
mt  4. 3 
il  4.2 
ap  2.3 

Walleska,  Cherokee 
County,  Georgia. 

PI.  N.  Stokes. 

A.  H.  Brooks, 

B.  U.  S.  G.  S.  168, 
p.  55,  1900. 

Quartz-gabbro. 

Near  tonalose. 

Q  15.2 
or  16. 7 
ab  16. 2 
an  18. 9  . 

di  8.9 
hy  16. 2 
mt  7.9 

St.  Cloud,  Minnesota. 

Dodge  and 
Sidener. 

M.  E.  Wadsworth, 

B.  G.  Nh.  S.  Minn., 

Il,  p.  86,  1887. 

Gabbro. 

Dark  portion. 
Cf.  No.  7,  ton¬ 
alose. 

ZrO» 

S 

SrO 

Cu 

0.02 

0.03 

0. 03 

0. 01 

Q  20.0 
or  23. 4 
ab  23. 1 
an  18.9 

di  1.9 
hy  7.7 
mt  2.3 
il  1.1 

Atlantic  Mine,  Butte, 
Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Granite. 

Complete  in  B. 
U.S.  G.S.168 
p.  117, 1900. 

so. 

Cl 

SrO 

0.  07 

trace 

trace 

Q  19.2 
or  25. 6 
ab  22. 0 
an  17. 0 

di  3.5 
hy  7.5 
mt  3. 2 
il  1.2 

Frohner  Mine,  Hel¬ 
ena,  Montana. 

H.  N.  Stokes. 

W.  IL  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Granite. 

ZrOo 

S 

SrO 

Cu 

0.03 

0. 07 

0.04 

0. 01 

Q  19.4 
or  25.0 
ab  23. 1 
an  17. 2 

di  4.5 
hy  6.3 
mt  2.8 
il  1. 2 

Alice  Mine,  Butte, 
Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Granite. 

Complete  in  B. 
U.S.  G.S.168, 
p.  117,  1900. 

SO, 

SrO 

none 

0.04 

Q  17.5 
or  21.7 
ab  22. 0 
an  22. 8 

di  1.3 
hy  7.6 
mt  4. 9 
il  1.4 

Red  Rock  Creek, 
Butte,  Montana. 

H.  N.  Stokes. 

W.  II.  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Diorite. 

V»0, 

SrO 

Li20 

0. 01 

0.09 

trace 

Q  13.6 
or  25. 0 
ab  25. 2 
an  17.0 

di  5.3 
hy  5.0 
mt  4.  9 
il  1.7 

Tintic  Mountain, 
Tintic  District, 

Utah. 

H.  N.  Stokes. 

Tower  and  Smith, 

19  A.  R.  U.  S.  G.  S., 
Ill,  p.  641,  1899. 

Andesite. 

v2o, 

SrO 

MoO 

Li20 

0. 02 
trace 
trace 
trace 

Q  14.6 
or  26. 1 
ab  24. 1 
an  16. 7 

di  2.4 
hy  5. 8 
mt  5.  6 
il  1.7 

Iron  Duke  Mine, 
Tintic  District, 

Utah. 

H.  N.  Stokes. 

Tower  and  Smith,' 

19  A.  R.  U.  S.  G.  S., 
Ill,  p.  647,  1899. 

Monzonite. 

FeSo 

NiO' 

SrO 

LioO 

none 

0.03 

trace? 

trace 

Q  11.3 
or  13. 3 
ab  19. 9 
an  27. 5 

di  6.7 
hy  16. 6 
mt  2.3 
il  1.4 

E.  of  Sonora,  Tuo¬ 
lumne  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  724,  1896. 

Quartz  -  pvrox- 
ene-cliorite. 

Near  maryland- 
ose. 

SrO 

Li20 

0. 06 
trace 

Q  10.3 
or  17.2 
ab  22. 5 
an  24. 5 

di  7. 3 
hy  10. 9 
mt  4. 6 
il  1.1 

E.  of  Milton,  Sierra 
County,  California. 

W.  F.  Hille- 
brand. 

II.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  724,  1896. 

Quartz  -mica- 
diorite. 

FeS, 

SrO 

Li20 

0.04 

trace 

trace 

Q  19.3 
or  18. 3 
ab  27. 8 
an  19.2 

di  3.  7 
hy  6. 1 
mt  2.8 
il  1. 1 

Grass  Valley,  Nevada 
County,  California. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  44,  1896. 

Granodiorite. 

Q  16.4 
or  23.4 
ab  14. 1 
an  23. 1 

di  6.9 
hy  5. 8 
mt  4. 6 
il  1.5 
hm  0. 6 

Cedar  Hill  Ridge, 
Washoe,  Nevada. 

G.  E.  Moore. 

G.  F.  Becker, 

M.  U.  S.  G.  S.,  Ill, 
p.  152,  1882. 

Hornblende- 

andesite. 

Q  16.9 
or  21. 7 
ab  21. 0 
an  22. 8 

C  1.3 

hyl3. 6 
mt  1.6 

Ben  Damhaim,  Loch 
Garabal,  Scotland. 

J.  H.  Player. 

Dakyns  and  Teall, 

Q.  J.  G.  S.,  XLVIII, 
p.  115,  1892. 

Hornblende- 

granitite. 

I 

One  decimal. 

Q  13.7 
or  15. 6 
ab  24. 6 
an  26.7 

C  2.0 

hy  6.3 
mt  1. 9 
il  5.2 
hm3. 3 

Fjulsrud,  Humledal, 
Norway.  t 

G.  Sarnstrom. 

W.  C.  Brbgger, 

Z.  K.,  XVI,  p.  53, 
1890. 

Porphyry. 

Ti0.2  high? 

SO, 

Org 

0.17 

0.05 

Q  12.8 
or  17. 2 
ab  22. 5 
an  18. 9 

di  6.0 
hyll.3 
mt  3. 2 
il  1.5 
hm  2. 0 

Peterberg,  Bl.  Wa- 
dern,  Rh.  Prussia. 

K.  Bottcher. 

H.  Greb, 

Erl.  G.  K.  Pr.  Bl. 
Wadern,  p.  34,  1889. 

Bronzite-por- 

phyrite. 

S03  for  S. 

SO, 

trace 

Q  12.6 
or  13.3 
abl8. 4 
an  23. 4 

di  13.4 
hy  13.0 
mt  4.  6 

Ole  Padde,  Harz 
Mountains. 

F.  Steffen. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  290,  1892. 

Augi  te-  tonal  ite. 

SO, 

trace 

Q.  13.4 
or  20. 0 
ab  20. 4 
an  13. 9 

C  3.3 

hy  19.  6 
mt  3.5 
il  1.8 

Steinhubel,  St.  Wen- 
del,  Harz  Moun¬ 
tains. 

Hesse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  266,  1892. 

Diorite  -  por- 
phyrite. 

SO, 

0.15 

Q  10.5 
or  16.1 
ab  21.0 
an  22. 5 

di  5.0 
hvl7.  5 
mt  3.1 
il  2. 1 

Bolmke  Thai,  Wer- 
nigerode,  Harz 
Mountains. 

K.  Harppe. 

K.  A.  Lossen, 

Jb.  Pr.  G.  HA.,  X, 
p.  309,  1892. 

Enstatite-por- 

phyrite. 

SOs  for  S. 

230 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE— Continued. 

RANG  3.  ALKALICALCIC.  TONALASE — Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

W 

to 

O 

h2o+ 

I  L,< ) 

co2 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

19 

65.87 

14.  88 

1.77 

3.11 

2.  93 

4.  61 

2.12 

4.  22 

0.  83 

0.  43 

trace 

100.  77 

2.  899 

A3.  Ill 

1.098 

.146 

.011 

.043 

.073 

.082 

.034 

.  045 

.005 

20 

62.69 

12.  77 

3.  22 

4.  79 

3.  09 

5.02 

2.39 

3.  63 

1.06 

1.22 

trace 

0.  60 

100. 48 

2.  952 

A2.  II 

1.045 

.125 

.020 

.067 

.077 

.089 

039 

.038 

.015 

— 

.009 

21 

60.  58 

11.92 

3. 05 

8. 14 

3.  88 

6.97 

1.21 

2.  55 

0.  95 

1.14 

trace 

0.  63 

101.  02 

2.  926 

B2.  Ill 

1.010 

.117 

.020 

.112 

.097 

.125 

.019 

.027 

.013 

— 

.009 

22 

63.  06 

18.  01 

2. 48 

1.31 

4.  55 

2.  72 

2.01 

3.  88 

2.  20 

100.  22 

A3.  Ill 

1.051 

.176 

.016 

.018 

.114 

.048 

.032 

.041 

23 

60.01 

17.05 

1.83 

4. 15 

1. 12 

6.  58 

2.  31 

5. 12 

1.40 

0.  42 

0.  09 

100.  12 

2.  543 

B3.  IV 

1.001 

1.67 

.011 

.058 

.028 

.118 

.037 

.055 

.003 

.001 

24 

55.  23 

14.06 

5.  06 

4.12 

4.00 

9.34 

2.  07 

2.  43 

1.07 

1.33 

0.  57 

100. 12 

A3.  Ill 

.921 

.138 

.032 

.057 

.100 

.166 

.034 

.025 

.009 

.008 

25 

60.  68 

16. 19 

5.37 

1.58 

2.96 

5.  88 

3.11 

3.  95 

0.  98 

100.  70 

2.  640 

A3.  Ill 

1.011 

.159 

.034 

.022 

.074 

.105 

.050 

.042 

17° 

26 

62.  43 

17.88 

1.78 

3.  53 

4.  50 

3.  43 

3. 10 

2.  75 

1.37 

trace 

trace 

100.  77 

2.  74 

A3.  Ill 

1.041 

.175 

.011 

.049 

.113 

.049 

.050 

.030 

— 

— 

27 

57.  69 

1 5.  65 

7.42 

2.41 

3. 10 

6.  92 

2.  33 

2.37 

1.59 

0.  22 

trace 

99.  73 

2.  779 

A3.  Ill 

.962 

.153 

.046 

.033 

.077 

.123 

.037 

.025 

.  002 

— 

RANG  3.  ALKALICALCIC.  TONALASE. 


1 

58.59 

15.04 

3. 94 

3.  48 

4.49 

5.  29 

3. 20 

2.90 

1.96 

0.55 

0.  22 

99. 66 

A2.  II 

.977 

.147 

.024 

.049 

.112 

.094 

.051 

.030 

.007 

.002 

2 

59.  77 

15.  38 

2.65 

3.44 

4.  40 

4.  81 

3.  61 

2.  83 

1.51 

0.  53 

0.  21 

99. 14 

A2.  II 

-.996 

.150 

.017 

.048 

.110 

.086 

.058 

.030 

.007 

.002 

O 

O 

59.  71 

15.41 

2.  63 

3.  52 

4.36 

4.  90 

3.  55 

2.  80 

1.52 

0.  60 

0.  22 

99.  22 

A2.  II 

.994 

.151 

.016 

.049 

.109 

.0S7 

.057 

.030 

.007 

.002 

4 

61.40 

16.  59 

2. 13 

3.  05 

2.  73 

6.17 

3.  83 

1.34 

0.  88 

0.  82 

none 

0.  79 

0.  20 

0. 13 

0.  02 

100. 10 

Al.I 

1.023 

.163 

.013 

.042 

.063 

.110 

.061 

.015 

.010 

1  .001 

.002 

- — 

5 

56.  78 

14.  33 

5.  76 

9.  27 

1.58 

5.  26 

3.  43 

1.75 

0. 10 

0.  33 

1.44 

0.  36 

0.  25 

100. 64 

A2.  II 

.946 

.140 

.036 

.129 

.040 

.094 

.055 

.019 

.017 

.002 

.004 

•6 

66.  68 

14.  93 

1.58 

3.  32 

2. 19 

4.89 

2.65 

2.  05 

1.09 

0. 16 

0.  50 

0. 10 

0. 10 

0.  08 

100.  32 

Al.  I 

l.lil 

.146 

.010 

.046 

.055 

.087 

.043 

.021 

.006 

.001 

.001 

.001 

7 

61. 19 

15.  22 

3.  20 

3.  55 

2.  38 

7.94 

3.17 

2.  62 

0.  40 

trace 

99.67 

A3.  Ill 

1.020 

.149 

.020 

.060 

.060 

.142 

.051 

.  -027 

— 

8 

60.  32 

15.80 

5. 42 

0.  89 

5.  08 

4.  65 

4.09 

1.82 

1.67 

0.12 

99.  86 

A3.  Ill 

1.005 

.  155 

.034 

.012 

.127 

.083 

.066 

.020 

.001 

DOSALANE— TONALOSE. 


231 


ORDER  4.  QUARDOFELIC.  AUSTRA RE— Continued. 


SUBRANG  3.  SODIROTASSIC.  HARZOSE — Continued. 


Inclusive. 

Norm. 

Local  it  y. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  22.5 
or  25. 0 
ab  17.8 
an  18. 6 

di  3.5 
hy  9.2 
ml  2.6 
il  0.8 

Wachberg,  Drosch- 
kau,  Silesia. 

H.  Traube. 

H.  Traube, 

N.  J.  1890,  I,  p.  218. 

Syenite. 

Q  19.6 
or  21. 1 
ab  20. 4 
an  16. 1 

di  7.0 
hy  8.6 
mt  4.6 
il  2. 2 

Near  Neudeck, 

Silesia. 

H.  Traube. 

II.  Traube,  N.  J.,  1890, 

I,  p.  220. 

Syenite. 

Q  21.7 
or  15. 0 
ab  10. 0 
an  19. 7 

di  12.8 
hyl3.  7 
mt  4. 6 
il  2.0 

Neudeck,  Silesia. 

H.  Traube. 

H.  Traube,  N.  J.,  1890, 

I,  p.  222. 

Syenite. 

Q  23.9 
or  22. 8 
ab  16. 8 
an  13. 3 

C  6.6 

hvll.  8 
nit  3.7 

Arnsdorf,  Riesenge- 
birge,  Silesia. 

Herz. 

L.  Milch,  N.  J.  B.  B., 
Nil,  p.  223,  1899. 

Schliere  in 
granitite. 

Q  11.6 
or  30. 6 
abl9. 4 
an  20. 9 

di  7.4 
hy  5.2 
mt  2. 6 
ap  1. 1 

San  Magno,  Latera 
Crater,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein,  Sb.  Berl. 
Akad.,  1888,  p.  99. 

% 

Trachyte. 

Alkalies  low? 
Also  in  N.  J. 
B.  B.,  VI,  p. 
10,  1889. 

S03 

01 

0. 84 
trace 

Q  13.4 
or  13.9 
ab  17. 8 
an  22. 0 

di  13. 4 
hy  7.0 
nit  7.4 
ap  2.8 

Radicofani,  Tuscany. 

L.  Ricciardi. 

G.  Mercalli,  Att.  Soc. 

It.  Sc.  Nat.,  XXX, 
p.  375,  1887. 

Andesite. 

PA  high? 

Q  12.8 
or  23.  4 
ab  26. 2 
an  18.  6 

di  8.2 
hy  3.6 
mt  5.1 
hm  1. 9 

Mount  Pagos,  Smyr¬ 
na,  Asia  Minor. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  II i,  p.  43, 
1897. 

Augite-ande- 

site. 

Dried  at  110°. 

Q  17.4 
or  16.7 
ab  26. 2 
an  16. 7 

C  3.6 

hyl6. 3 
mt  2.6 

Ensay,  Omeo, 

Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt,  Tr.  R. 
Soc.  Viet.,  XXII, 
p.  99,  1886. 

Quartz-mica- 

diorite. 

Dried  at  100°. 
Near  tona- 
lose. 

Q  18.0 
or  13.9 
ab  19. 4 
an  25. 3 

di  6.9 
hy  4.5 
mt  9.8 

Tambo  River,  Omeo, 
Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt,  Tr.  R. 
Soc.  Viet.,  XX, 
p.  31,  1884. 

Quartz-mica- 

diorite. 

Dried  at  100°. 

SUBRANG  4.  DOSODIC.  TONALOSE. 


Q  12.1 
or  16. 7 
ab  26. 7 
an  18. 3 

di  6.3 
hyl0.5 
mt  6. 6 
il  1.1 

Average  of  igneous 
rocks  of  the  earth. 

Various  ana¬ 
lysts. 

F.  W.  Clarke, 

B.  U.  S.  G.  S.  78, 
pp.  37  and  38,  1891. 

Cf.  B.  U.  S.  G.  S. 
148,  p.  12, 
1897. 

Q  11.3 
or  16.7 
ab  30. 4 
an  17. 2 

di  5.5 
hyll.4 
mt  3.9 
il  1.1 

Average  igneous  rock 
of  the  United  States. 

Chemists  of 
U.S.G.  S. 

. 

F.  W.  Clarke, 

B.  U.  S.  G.  S.,  148, 
p.  12,  1897. 

H.20  above  110° 

Q  11.2 
or  16. 7 
ab29. 9 
an  17. 8 

di  5.3 
hyll.8 
mt  3.7 
il  1.1 

Average  igneous  rock 
of  the  United  States. 

Chemists  of 
U.S.G.  S. 

F.  W.  Clarke, 

B.  U.  S.  G.  S.,  168, 
p.  14,  1900. 

H20  above  110°. 

ZrOo 

S 

Cro03 

v.o8 

SrO 

none 

none 

trace 

0.02 

trace? 

Q  17.3 
or  8.3 
ab  32. 0 
an  24. 2 

di  5.3 
hy  6.2 
mt  3.0 
il  1.5 

Edmunds  Hill, 
Aroostook  County, 
Maine. 

W.  F.  Hille- 
brand. 

H.  E.  Gregory, 

A.  J.  S.,  VIII, 
p.  365,  1899. 

Andesite. 

Also  in  B.  U.  S. 
G.  S.,  165, 
p.  171,  1900. 

Q  13.6 
or  10. 6 
ab  28. 9 
an  18. 3 

di  6.7 
hylO.  6 
mt  8. 4 
il  2.6 

Rocky  Hill,  Somerset 
County,  New 

Jersey. 

A.  H.  Phillips. 

A.  H.  Phillips, 

A.  J.  $.,  VIII, 
p.  279,  1899. 

Diabase. 

SrO 

LUO 

trace 

trace 

Q  28.4 
or  11.7 
ab  22. 5 
an  22. 8 

di  1.1 
hy  8.9 
mt  2.3 
il  0.9 

Rowlandsville,  Cecil 
County,  Maryland. 

W.  F.  Hille- 
brand. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  672,  1895. 

Biotite-granite. 

• 

Q  14.3 
or  15. 0 
ab  26. 7 
an  19. 7 

di  16.2 
hy  3.3 
mt  4.6 

St.  Cloud,  Minnesota. 

Dodge  and  Sid- 
ener. 

M.  E.  Wadsworth, 

B.  G.  Nh.  S.  Minn., 

2,  p.  86,  1887. 

Gabbro. 

Light  portion 
cf  No.  2, 
harzose. 

Q  12.6 
or  11.2 
ab  34. 6 
an  19. 2 

di  3.1 
hyll.3 
mt  2.8 
hm3.5 

Epsilon  Lake,  Lake 
County,  Minnesota. 

J.  A.  Dodge. 

N.  H.  Winchell, 

21  A.  R.  G.,  Nh.  S. 
Minn.,  p.  58,  1893. 

Porphyrite. 

232 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE — Continued. 

RANG  3.  ALKALICALGIC.  TOXALASE— Continued. 


No. 

Si02 

A1203 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

H20  + 

h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

9 

59.  48 

16.  37 

3.21 

3.17 

3.  29 

4.  88 

3.  30 

2.81 

2.01 

0.  93 

0.41 

0. 19 

0. 13 

100.  21 

Al.  I 

.991 

.160 

.020 

.044 

.082 

.087 

.053 

.030 

.012 

.003 

.003 

.001 

10 

65. 11 

16.21 

1.06 

3. 19 

2.  57 

3.  97 

4.  00 

2.51 

0.  94 

0.  71 

0.  02 

none 

100.  33 

Al.  I 

1.085 

.159 

.007 

.044 

.064 

.071 

.064 

.027 

.009 

— 

— 

n 

64.  07 

15.82 

3.  40 

1.44 

3.  39 

4.  43 

4.  06 

2.  27 

0.  42 

0.  10 

0.  45 

0.  18 

trace 

100.  08 

A2.  II 

1.068 

.155 

.021 

.020 

.085 

.079 

.065 

1 024 

.006 

.001 

— 

12 

61.22 

16. 14 

3.01 

2.  58 

4.21 

5.  46 

4.48 

1.87 

0.40 

0.04 

0.61 

0.  25 

trace 

100.  36 

A2.  II 

1.020 

.158 

.019 

.036 

.105 

.098 

.072 

.020 

.008 

.002 

— 

13 

58. 49 

16.  70 

3.  85 

2.37 

3. 12 

5.  90 

3.47 

1.59 

2,44 

1.  71 

trace 

0.  24 

100.  52 

Al.  I 

.975 

.164 

.024 

.033 

.078 

.105 

.  056 

.017 

.021 

• - i 

.003 

14 

56.  28 

14.  23 

4.  69 

4.  05 

6.  37 

7.  94 

2.  98 

1.23 

0.93 

0.  84 

0.  40 

0.16 

100. 28 
.04 

- 

Al.  I 

.938 

,140 

.029 

.056 

.159 

.142 

.048 

.013 

.010 

.003 

.002 

100. 24 

15 

60.  30 

16.31 

4.35 

1.41 

2.  39 

5.  62 

3.99 

2.36 

1.86 

0.  64 

0.  76 

0.20 

0. 13 

0. 15 

100. 57 

Al.  I 

1. 005 

.160 

.027 

.  020 

.060 

.100 

.064 

.025 

.009 

.001 

.002 

.001 

16' 

56.  61 

13.62 

5.89 

2.  60 

5.48 

6.  61 

3. 13 

2.71 

1.07 

1.20 

0.  79 

0.  06 

0.  35 

0. 14 

100.  31 

Al.  I 

.944 

.134 

.037 

.036 

.137 

.118 

.050 

.029 

.010 

— 

.005 

.001 

17 

55.  83 

17.11 

4.  07 

3.  75 

5.  05 

7.40 

2.94 

1.71 

1.28 

1.05 

0.  21 

none 

100.  40 

A2.  II 

.931 

.168 

.025 

.052 

.126 

.132 

.047 

.018 

.013 

.002 

— 

18 

61.16 

16. 17 

2.  89 

2. 18 

3.  89 

• 

4.  26 

3.  87 

3.  20 

2.  09 

0.  23 

0. 13 

trace 

100. 07 

A2.  II 

1.019 

.159 

.018 

.030 

.097 

.  076 

.062 

.034 

.003 

.001 

— 

19 

61.45 

15.  07 

4.  46 

1. 18 

3.  02 

5.37 

4.  00 

1.  22 

1.23 

2.  80 

trace 

none 

100. 14 

A2.  II 

1.024 

.148 

.028 

.017 

.076 

.096 

.064 

.013 

.035 

— 

— 

20 

60. 15 

17.  85 

2.00 

2.  02 

3.  26 

5.48 

3.95 

2.  36 

1.24 

0.  25 

none 

0.  47 

0.  22 

0.07 

0.  20 

99.  62 

Al.  I 

1.003 

.175 

.013 

.028 

.082 

.098 

.064 

.025 

.006 

.002 

.001 

.001 

21 

60.00 

16.  37 

2.  28 

2.  46 

3.81 

4.  96 

3.  73 

2.  70 

1.42 

0.61 

0. 17 

0.  59 

0.  35 

0.  05 

0.  26 

99.  87 

Al.  I 

1.000 

.160 

.014 

.034 

.095 

.089 

.059 

.029 

.007 

.002 

.001 

.002 

16° 

22 

64.81 

15.  73 

1.68 

2.91 

2.82 

4.22 

3.  98 

1.43 

0.  62 

1.08 

0.  08 

0.  23 

0. 08 

100. 61 

2.  740 

Al.  I 

1.080 

.154 

.011 

.040 

.071 

.075 

.064 

.015 

.001 

.002 

.001 

23 

63. 16 

17.21 

2.  43 

2.30 

1.27 

6.  27 

4.  70 

1.84 

0.  69 

0.21 

0.  12 

trace 

0.  09 

100.  29 

Al.  I 

1.053 

.169 

.015 

.032 

.032 

.112 

.076 

.020 

.003 

.001 

— 

.001 

• 

24 

62.88 

17.13 

1.86 

2.  58 

1.48 

5.39 

4.  50 

2.  25 

0.  42 

0. 16 

none 

0.51 

0.  26 

0. 16 

0. 16 

99.  86 

Al.  I 

1.048 

.168 

.012 

.036 

.037 

.096 

.072 

.024 

.006 

.002 

.002 

.001 

25 

59.42 

16.  79 

3.  23 

3.29 

2.  24 

5.  57 

4. 15 

2.  82 

0.  79 

0.  27 

0.  44 

0. 68 

0.  35 

0. 13 

0. 14 

100.  38 

Al.  I 

.990 

'  .164 

.020 

.046 

.046 

.100 

.067 

.030 

.008 

.002 

.002 

.001 

26 

59. 19 

18.  00 

3.  07 

2.  32 

1.41 

6.  55 

4.01 

2.  74 

1.06 

0.  46 

none 

0.  58 

0.  29 

0. 19 

0. 18 

100. 18 

Al.  I 

.970 

.176 

.020 

.032 

.034 

.117 

.064 

.029 

.007 

.002 

.003 

.001 

DOSALANE - TONALOSE. 


233 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 


SUBRANG  4.  DOSODIC.  TONALOSE— Continued. 


I  nclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cr»03 

NiO 

0.03 

trace 

Q  14.6 
or  16. 7 
ab  27. 8 
an  21. 4 

hylO.O 
mt  4.  6 
il  1.7 
ap  1.0 

Red  Bluff,  Madison 
County,  Montana. 

L.  G.  Eakins. 

G.  P.  Merrill, 

Pr.  IJ.  S.  Nat.  Mus., 
XVII,  p.  651,  1895. 

Hypersthene- 

andesite. 

Complete  in  B. 
(LS.G.S.,148, 
p.  140,  1897. 

so3 

Cl 

Li.,0 

trace 

none 

0.04 

Q  18.5 
or  15.0 
ab  33. 5 
an  18. 9 

di  0.8 
hy  9.7 
mt  1.6 
il  1.4 

Electric  Peak, 
Yellowstone  Na¬ 
tional  Park. 

J.  F.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S.,  I, 
p.  627,  1891. 

Quartz-mica- 

diorite. 

NiO 

0.05 

Q  18.2 
or  13. 3 
ab34. 1 
an  18. 3 

di  2.9 
hy  7.2 
mt  3.3 
il  0.9 
hml.O 

Electric  Peak, 
Yellowstone  Na¬ 
tional  Park. 

W.  H.  Melville. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S.,I, 
p.  627,  1891. 

Quartz- 

pyroxene- 

mica-diorite. 

NiO 

0.09 

Q  11.2 
or  11.1 
ab  37.7 
an  18. 3 

di  7.3 
hy  8.5 
mt  4.4 
il  1.2 

Electric  Peak, 
Yellowstone  Na¬ 
tional  Park. 

W.  H.  Melville. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S.,I, 
p.  627,  1891. 

Pyroxene- 

miea-diorite. 

S03 

LinO 

0.63 

0.01 

Q  15.8 
or  9.5 
ab  29. 3 
an  25. 3 

di  3.1 
hy  6. 4 
mt  2. 6 
il  3. 2 
hm  2. 0 

Electric  Peak, 
Yellowstone  Na¬ 
tional  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  81,  1899. 

Hornblende- 

porphyrite. 

so3 

Cl 

Li20 

trace 

0.17 

0.01 

Q,  10.5 
or  7.2 
ab  25. 2 
an  22. 0 

di  14.2 
hyll.3 
mt  6. 7 
il  1.5 

Electric  Peak, 
Yellowstone  Na¬ 
tional  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  627,  1891. 

Pyroxene- 

mica-diorite. 

S03 

0.10 

Q  14.4 
or  13.9 
ab  33.  5 
an  19.  7 

di  6.3 
hy  3.1 
mt  2.6 
il  1.4 
hm  2. 6 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

T.  M.  Chatard. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  648,  1891. 

Idornblende- 

pyroxene- 

andesite. 

Cr.,03 

so3 

Cl 

LioO 

0.05 

trace 

none 

none 

Q  9.6 
or  16. 1 
ab  26. 2 
an  15. 3 

Q  10.0 
or  10. 0 
ab  24. 6 
an  28. 6 

di  13.  7 
hy  7.4 
mt  6.0 
il  1.5 
hm  1. 8 

di  6. 7 
hy  11. 1 
mt  5. 8 
il  2.0 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

Sepulchre  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

T.  M.  Chatard. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

1,  p.  648,  1891. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  64«,  1891. 

Hornblende- 

pyroxene- 

andesite. 

Pyroxene- 

andesite. 

% 

♦ 

Q  11.7 
or  18. 9 
ab  32. 5 
an  17. 5 

di  3.2 
hy  9.7 
mt  4. 2 
il  0.5 

Near  Hurricane 

Ridge,  Yellowstone 
Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.U.S.  G.S.,  XXXII, 
p.  261,  1899. 

Andesite- 

porphyry. 

so3 

LioO 

0. 29 

0.05 

Q  19.1 
or  7.2 
ab  33. 5 
an  19. 7 

di  1.8 
hy  6. 8 
il'  '2.6 
hm  4.5 
tn  3.4 

Agate  Creek,  Yellow¬ 
stone  National 

Park. 

• 

J.  E.  Whitfield. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  134,  1897. 

Pyroxene- 

andesite. 

CroO;j 

NiO 

SrO 

LioO 

none 

none 

0. 10 
none 

Q  11.6 
or  13.9 
ab  33. 5 
an  23. 9 

di  2.8 
hy  8. 2 
mt  3.0 
il  0.8 

Wind  River  Plateau, 
Yellowstone  Na¬ 
tional  Park. 

H.  N.  Stokes. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  97,  1900. 

Hornblende- 
augite- 
an  desite. 

NiO 

SrO 

LioO 

none 

0.11 

trace 

Q  12.2 
or  16. 1 
ab  30. 9 
an  20. 0 

di  3.9 
hy  9.3 
mt  3.2 
il  1.1 

Cabin  Creek,  Yellow¬ 
stone  National 

Park. 

H.  N.  Stokes. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  96,  1900. 

Diorite- 

porphyrv. 

Cl 

FeSo 

SrO 

0. 04 

0.90 

trace 

Q  21.4 
or  8. 3 
ab  33.5 
an  20. 9 

hy  10. 9 
mt  2.6 
pr  0.  9 

North  Mosquito  Am¬ 
phitheater,  Lead- 
ville,  Colo. 

W.  F.  Hi  lie- 
brand. 

W.  Cross, 

M.  U.  S.  G.  S.,  XII, 
p.  340,  1886. 

Biotite- 

porphyrite. 

so3 

SrO 

LioO 

trace 

trace? 

trace 

Q  14.8 
or  11. 1 
ab  39. 8 
an  20. 3 

di  8.9 
hy  0.7 
mt  3.5 
il  0.5 

Henry  Mountains, 
Utah. 

R.  B.  Riggs. 

J.  S.  Diller, 

B.  U.  S.  G.  S.  148, 
p.  183,  1897. 

Porphyry. 

SrO 

Li;0 

0. 12 
trace 

Q  14.9 
or  13. 3 
ab  37. 7 
an  20. 0 

di  5.5 
hy  3.4 
mt  2.8 
il  0.9 

Mount  Hillers,  Hen¬ 
ry  Mountains, 

Utah. 

W.  F.  Hille- 
brand. 

W.  Cross, 

14  A.  R.  U.  S.  G.  S., 
II,  p.  227,  1894. 

Hornblende- 

porphyrite. 

SrO 

Li»0 

0. 07 
trace 

Q  10.6 
or  16. 7 
ab  35. 1 
an  18.  6 

di  7.7 
hy  3.2 
mt  4. 6 
il  1.2 

Ute  Peak,  Sierra  El 
Late,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

14  A.  R.  U.  S.  G.  S., 
Il,  p.  227,  1894. 

Hornblende- 

porphvrite. 

Near  andose. 

SrO 

Li»0 

0.13 

trace 

Q  10.7 
or  16.1 
ab  33. 5 
an  23. 1 

di  6.3 
hy  1.1 
mt  4.6 
il  1.1 
ap  0.7 

Lone  Cone,  San  Mi¬ 
guel  Mountains, 
Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross. 

14  A.  R.  U.  S.  G.  S., 
II,  p.  227,  1894. 

Augite-diorite. 

Near  andose. 

284 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALAXE— Continued. 
RANG  3.  ALKALICALCIC.  TONALASE— Continued. 


No. 

Si02 

A1203 

FeA 

FeO 

MgO 

CaO 

Na20 

K20 

H20+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr.  ( 

27 

62.71 

17.06 

3.79 

2.  74 

1.  78 

5.51 

3.  54 

2.  96 

0.  24 

trace 

100.  33 

2.  79 

A3.  Ill 

1.045 

.167 

.024 

.038 

.045 

.098 

.057 

.032 

30° 

28 

56.  93 

17.03 

3.67 

4.  54 

3.  30 

6.51 

3. 19 

2.  58 

0.  45 

0. 13 

none 

1.03 

0.  44 

0. 10 

0.  08 

100.  04 

2.  860 

Al.  I 

.949 

.167 

.023 

.063 

.083 

.116 

.050 

.027 

.012 

.003 

. 

.001 

.001 

33° 

29 

60.16 

15.  34 

3.  07 

2. 18 

3.41 

5.  79 

3.  88 

2.  59 

1.79 

0.  25 

0.  84 

0.  46 

0.  08 

0. 14 

100.15 

2.  635 

Al.  I 

1.003 

.150 

.020 

.030 

.085 

.103 

.063 

.027 

.010 

.003 

.001 

.001 

21° 

30 

' 62. 78 

17.16 

1.96 

2.31 

2.32 

4.  84 

4.11 

2. 15 

0.  88 

0.  24 

none 

0.  56 

0. 15 

0. 06 

0.  04 

99.58 

Al.  I 

1.046 

.168 

.012 

.032 

.058 

.  086 

.  066 

.023 

.007 

.001 

.001 

— 

31 

58.63 

16.  23 

1.91 

4.  20 

4.28 

6.  59 

3.51 

2.09 

1.17 

0. 15 

none 

0.  74 

0.  20 

0. 11 

0.  06 

99.  93 

Al.  I 

.977 

.159 

.012 

.058 

.107 

.118 

.057 

.022 

.009 

.001 

.002 

— 

32 

64.  04 

15.  58 

1.26 

3.  22 

3.  23 

4.  51 

4.01 

2.  22 

1.17 

0. 19 

none 

0.  69 

0. 16 

trace 

0. 11 

100.  39 

Al.  I 

1.067 

.153 

.008 

.044 

.081 

.080 

.064 

.023 

.009 

.001 

— 

.001 

33 

63.  78 

16.39. 

1.12 

2.  76 

3.  27 

4.  07 

3.  84 

2.  03 

1.82 

0.  22 

none 

0.44 

0.11 

0.  05 

0.  08 

99.98 

Al.  I 

1. 063 

.161 

.007 

.039 

.082 

.073 

.062 

.021 

.005 

.001 

.001 

.001 

34 

63.  37 

15.90 

1.41 

3. 18 

3.  33 

4.  63 

4.  05 

2. 10 

1. 16 

0. 18 

none 

0.  69 

0. 17 

trace 

0.  06 

100.  23 

Al.  I 

l.  Ood 

.156 

.009 

.044 

.084 

.083 

.065 

.  022 

.009 

.001 

— 

— 

35 

57.  21 

12.99 

3.  28 

10. 18 

1.59 

5.  97 

3.  07 

1.61 

1.03 

0.  68 

1.  72 

0.44 

0.  24 

0.  06 

100.  20 

Al.  I 

.951 

.127 

.021 

.141 

. 

.040 

.107 

.050 

.017 

.021 

.003 

.004 

— 

36 

62.  09 

17.03 

2.  38 

2.69 

3.  08 

5.  65 

4. 10 

1.67 

0. 13 

0.04 

none 

0.  65 

0. 19 

trace 

0.  07 

99.  84 

Al.  I 

1.035 

.167 

.015 

.038 

.077 

.101 

.066 

.018 

.008 

.001 

— 

.001 

37 

60.  98 

17.  82 

1.83 

3.  33 

2.  76 

5.  73 

4.  26 

,43 

0.  45 

0. 13 

none 

0.  71 

0. 17 

trace 

0.  06 

99.  71 

Al.  I 

1.016 

.174 

.011 

.046 

.069 

.102 

0.69 

.  015 

.009 

.001 

— 

— 

38 

60.09 

17.85 

2.03 

3. 45 

3.  50 

6.  28 

4. 17 

1.31 

0.  26 

0. 12 

none 

0. 54 

0.  23 

trace 

0.  05 

99.  98 

Al.  I 

1. 002 

.175 

.013 

.049 

.088 

.112 

.068 

.014 

.007 

.002 

— 

— 

39 

59.  39 

18.45 

1.79 

3.90 

3.13 

6.  29 

4.  29 

1.29 

0.  42 

0. 10 

none 

0.  41 

0.  22 

trace 

0.  05 

99.  77 

Al.  I 

.990 

.181 

.011 

.054 

.078 

.112 

.069 

.014 

.005 

.002 

40 

58.41 

17.85 

2.67 

3.  29 

3.  61 

6.81 

3.  77 

1.23 

0.  86 

0.34 

none 

0.69 

0.24 

trace 

0.  05 

99.  87 

Al.  I 

.974 

.175 

.017 

.046 

.090 

.121 

.061 

.013 

.009 

.002 

— 

— 

41 

63.  03 

17.72 

2.  27 

1.92 

3.  63 

5.97 

3.  92 

1.06 

0.44 

99.96 

A3.  Ill 

1.051 

.173 

.014 

.027 

.091 

.107 

.063 

.012 

42 

62.00 

17.  84 

n.  d. 

4.  40 

2.64 

5.37 

4.  29 

1.47 

1.  66 

0. 17 

0.  29 

trace 

100. 13 

A2.  II 

1.033 

.175 

.061 

.066 

!  .096 

!  .069 

.016 

1 

1  . 002 

.002 

1  _ 

DOSALANE - TONALOSE. 


235 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 
SUBRANG  4.  DOSODIC.  TONALOSE— Continued. 


i 

Inclusive. 

Norm. 

Locality. 

A ::  ... 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  16.4 
or  17.8 
ab  29. 9 
an  22. 2 

di  4.2 
by  4.4 
mt  5.6 

Brush  Creek,  Elk 
Mountains,  Colo¬ 
rado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.,  150, 
p.  242,  1898. 

Diorite. 

so3 

Cl 

SrO 

Li.,0 

none 

trace 

0. 06 
none 

Q  10.  7 
or  15.0 
a  b26. 2 
an  25. 0 

di  3.9 
hylO.O 
'  mt  5. 3 
il  1.8 
ap  0.9 

Ophir  Needles,  Tel- 
luride,  Colorado. 

H.  N.  Stokes. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  163,  1900. 

Gabbroitic  fa¬ 
cies  of  mon- 
zonite. 

so3 

g 

NiO 

SrO 

Li„0 

0.08 

trace 

trace 

0.08 

trace 

Q  13.5 
or  15.0 
ab  33. 0 
an  16. 7 

di  7.2 
hy  5.2 
mt  4. 6 
il  1.5 
ap  1. 1 

Sierra  Grande,  Col¬ 
fax  County,  New 
Mexico. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  171,  1900. 

Pyroxene-an¬ 

desite. 

• 

Cl 

S 

SrO 

Li20 

trace 

0.02 

trace 

trace 

Q  16.6 
or  12.8 
ab  34. 6 
an  22. 0 

di  1.7 
hy  6.6 
mt  3.0 
il  1.1 

Yentna  River, 

Alaska. 

II.  N.  Stokes. 

J.  E.  Spurr, 

A.  J.  S.,  X, 
p.  310,  1900. 

Y  entnite. 

Near  yellow- 
stonose. 

FeSo 

SrO 

Li20 

0.04 

trace 

trace 

Q  10.3 
or  12.2 
ab  29. 9 
an  22. 2 

di  6.4 
hyl2. 6 
mt  2.8 
il  1.4 

Captain’s  Bay,  Una- 
laska  Island, 

Alaska. 

W.  F.  Hille- 
brand. 

G.  F.  Becker, 

B.  U.  S.  G.  S.,  148, 
p.  232,  1897. 

Diorite. 

S 

Cro03 

NiO 

SrO 

Li.,0 

trace 

none 

none 

trace 

trace 

Q  17.4 
or  12. 8 
ab  33. 5 
an  18. 3 

di  3.0 
hyl0.2 
mt  1. 9 
il  1.4 

Mount  Stuart,  Kitti¬ 
tas  County,  Wash¬ 
ington. 

H.  N.  Stokes. 

G.  O.  Smith, 

B.  U.  S.  G.  S.,  168, 
p.  224,  1900. 

Granodiorite. 

Cr„03 

NiO 

SrO 

LioO 

none 

none 

trace 

trace 

Q  18.0 
or  11.7 
ab  32. 5 
an  20. 3 

C  0.5 

hyll.7 
mt  1.6 
il  0.8 

Near  Mount  Stuart, 
Kittitas  County, 
Washington. 

H.  N.  Stokes. 

G.  O.  Smith, 

B.  U.  S.  G.  S.,  168, 
p.  224,  1900. 

Granodiorite- 

porphyry. 

S 

Cr»03 

NiO 

SrO 

Li20 

trace 

none 

none 

none 

trace 

Q  16.3 
or  12.2 
ab  34. 1 
an  18. 9 

di  3.5 
by  10. 4 
mt  2. 1 
il  1.4 

Near  Cascade  Creek, 
Kittitas  County, 
Washington. 

II .  N.  Stokes. 

G.  O.  Smith, 

B.  U.  S.G.S.,  168, 
p.  224,  1900. 

Granodiorite. 

FeS, 

Cr203 

v2o3 

SrO 

Li20 

0.13 

none 

none 

trace 

trace 

Q  15.4 
or  9.5 
ab  26. 2 
an  16. 7 

di  8.9 
hyl2. 5 
mt  4.9 
il  3.2 
ap  1. 0 

Turnpike  Creek,  Kit¬ 
titas  County,  Wash¬ 
ington. 

W.  F.  Hille- 
brand. 

G.  O.  Smith, 

B.  U.  S.G.S.,  168, 
p.  225,  1900. 

Diabase. 

so3 

Cl 

Cr203 

NiO 

SrO 

none 

trace? 

none 

none 

0.07 

Q  15.3 
or  10.0 
ab  34. 6 
an  23. 1 

di  4. 2 
hy  7.6 
mt  3.5 
il  1.2 

Palisades,  Crater 

Lake,  Oregon. 

H.  N.  Stokes. 

H.  B.  Patton, 

B.  U.  S.G.S.,  168, 
p.  223,  1900. 

Hypersthene- 

augite-andes- 

ite. 

so3 

Cl 

Cr»03 

NiO 

SrO 

none 

trace 

none 

none 

0.05 

Q  13.5 
or  8. 3 
ab  36. 2 
an  25. 0 

di  2. 8 
hy  9.0 
mt  2.6 
il  1.4 

“The  Watchman,” 
Crater  Lake,  Ore¬ 
gon. 

II.  N.  Stokes. 

II.  B.  Patton, 

B.  U.  S.  G.S.,  168, 
p.  223,  1900. 

Hypersthene- 

augite-andes- 

ite. 

so3 

Cl 

S 

Cr203 

NiO 

SrO 

none 

trace 

none 

none 

0.05 

0.05 

Q,  11.3 
or  7.8 
ab  35. 6 
an  25. 9 

di  4.5 
hyl0.5 
mt  3.0 
il  1.1 

Crater  Rim,  Crater 
Lake,  Oregon. 

II.  N.  Stokes. 

H.  B.  Patton, 

B.  U.  S.G.S.,  168, 
p.  222,  1900. 

Hypersthene- 

augite-andes- 

ite. 

so3 

Cl 

s 

Cr»03 

NiO 

SrO 

none 

trace 

none 

none 

none 

0.04 

Q  10.0 
or  7.8 
ab  36. 2 
an  27. 2 

di  3.2 
by  11.  3 
mt  2.6 
il  0.8 

Wizard  Island,  Crater 
Lake,  Oregon. 

H.  N.  Stokes. 

H.  B.  Patton, 

B.  U.  S.G.S.,  168, 
p.  222,  1900. 

Hypersthene- 

augite-andes- 

ite. 

so3 

Cl 

S 

Cr203 

NiO 

SrO 

none 

trace 

none 

none 

none 

0.05 

Q  11.9 
or  7.2 
ab  32. 0 
an  28. 1 

di  4. 5 
hy  9. 5 
mt  3.9 

il  1.4 

Liao  Rock,  Crater 
Lake,  Oregon. 

H.  N.  Stokes. 

H.  B.  Patton, 

B.  U.  S.  G.S.,  168, 

'  p.  223,  1900. 

Hypersthene- 

augite-andes- 

ite. 

Q  17.8 
or  6.7 
ab  33.0 
an  27. 2 

di  2.3 
hy  9.1 
mt  3.2 

West  Base  of  Mount 
Shasta,  California. 

W.  II.  Melville. 

J.  S.  Diller, 

B.  U.  S.G.  S.,  150. 
p.  228,  1898. 

Hypersthene- 

andesite. 

Q  12.6 
or  8.9 
ab  36. 2 
an  25. 0 

di  1.5 
liyl3. 9 

Mount  Shasta,  Cali¬ 
fornia. 

P.  W.  Shinier. 

Hague  and  Iddings, 

A.  J.  S.,  XXVI, 
p.  230,  1883. 

Hypersthene- 

andesite. 

Pumice. 

236 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE — Continued. 

RANG  3.  ALKALI  CALCIC.  TONALASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na,0 

k2o 

h2o+ 

H20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

43 

61.58 

16.  96 

1.75 

2.  85 

3.  67 

6.  28 

3.  94 

1.28 

1.06 

0.  24 

0.  49 

0.  22 

trace 

0.  03 

100.  35 

Al.  I 

1.026 

.166 

.011 

.040 

.092 

.112 

.063 

.014 

.006 

.002 

— 

— 

44 

62.  44 

16.  39 

4.  66 

1.00 

2.  65 

6.22 

3. 16 

2.  25 

1.02 

0.31 

0.  05 

trace 

0.  03 

100.  18 

Al.  I 

1.041 

.160 

.029 

.014 

.066 

.110 

.051 

.024 

.004 

— 

— 

— 

45 

60.  04 

17.43 

5.  39 

0. 53 

3.51 

6.  65 

4. 15 

1.24 

0.  90 

0. 49 

0.  04 

0.  08 

0.  04 

100.  49 

Al.  I 

1.001 

.171 

.034 

.007 

.088 

.119 

.067 

.014 

.006 

— 

.001 

— 

46 

61. 17 

17.  74 

1.78 

3.51 

2.  76 

5.  90 

3.  79 

1.  71 

0.  83 

0.45 

0. 14 

0. 12 

0.  06 

100. 00 

Al.  I 

1.020 

.174 

.011 

.049 

.  069 

.105 

.061 

.018 

.006 

.001 

.002 

— 

47 

60.  93 

18.  56 

2.  68 

2. 19 

2.  37 

6.  63 

3.  79 

1.33 

0.  90 

0.61 

0. 18 

0. 10 

0.  02 

100.  41 

Al.  I 

1.016 

.182 

.017 

.030 

.059 

.118 

.061 

.014 

.008 

.001 

.001 

— 

48 

59.  84 

16.  81 

1.88 

3.60 

3.  85 

6.30 

3.  63 

2. 13 

1.04 

■0.  57 

0. 19 

0. 14 

0.  07 

100.  07 

Al.  I 

.998 

.  164 

.012 

.050 

.096 

.112 

.058 

.  022 

.007 

.001 

.002 

.001 

49 

63.47 

16.  75 

2. 15 

2.  75 

3.  04 

5.  72 

3.  94 

1.62 

0.  55 

— 

0.37 

0.13 

0.  09 

0.  04 

100. 66 

Al.  I 

1.058 

.164 

.014 

.039 

.076 

.102 

.063 

.017 

.005 

.001 

.001 

— 

50 

58.  08 

18.  37 

2.  92 

3.38 

3.  35 

7.  05 

3.  66 

1.33 

1.09 

— — - 

0.44 

0. 16 

0. 13 

0.  03 

100. 01 

Al.  I 

.968 

.180 

.018 

.048 

.084 

.126 

.059 

.014 

.006 

.001 

.002 

— 

51 

60.  20 

17.21 

3.12 

2.  69 

3. 18 

6.  04 

3.35 

1.44 

1. 18 

1. 12 

0.57 

0.17 

0. 12 

0. 11 

100.  50 

Al.  I 

1.003 

.169 

.020 

.038 

.080 

.108 

.054 

.015 

.007 

.001 

.002 

.001 

52 

59.  68 

17.09 

2.  85 

2.  75 

3.  54 

6.  62 

3.  87 

1.31 

1.00 

0. 15 

0.  20 

0. 65 

0.  25 

trace 

0.  04 

100. 03 

Al.  I 

.995 

.167 

.018 

.039 

.089 

.118 

.063 

.014 

.008 

.002 

— 

— 

53 

58.47 

18.  80 

3.  34 

2.  64 

2.  69 

6.  60 

3.  58 

2.01 

0.  92 

0.  14 

0.  51 

0.  22 

0. 13 

0.  09 

100. 19 

Al.  I 

.975 

.184 

.020 

.037 

.067 

.118 

.058 

.021 

.006 

.002 

.002 

.001 

54 

63.  43 

14.  20 

1.54 

4.  56 

2.  35 

5.51 

3.49 

2. 19 

1.50 

0.  15 

0.  73 

0.  11 

0.  03 

0.  06 

99.  85 

Al.  I 

1.057 

.139 

.010 

.063 

.059 

.099 

.056 

.023 

.009 

.001 

— 

— 

55 

60.  02 

16.  07 

2. 17 

3.46 

4.  57 

7.  01 

3.55 

1.59 

0.  45 

0.  24 

0.  42 

0. 17 

0.  10 

0.  08 

99.96 

Al.  I 

1.000 

.157 

.014 

.049 

.114 

.125 

.057 

.018 

.005 

.001 

.001 

.001 

56 

59.34 

17.61 

3.63 

2.  28 

3.50 

6.45 

3.40 

1.94 

0.  74 

0.  64 

0.32 

0.  25 

0. 12 

0. 11 

100.  37 

Al.  I 

.989 

.172 

.022 

.032 

.088 

.115 

.055 

.020 

.004 

.002 

.002 

.001 

57 

63.  39 

16.58 

1.41 

3.08 

2. 15 

4.  76 

3.  47 

2.  79 

1.87 

0.  22 

0.  44 

0. 14 

trace 

0. 11 

100.  41 

Al.  I 

1. 057 

.162 

.009 

.043 

.054 

.085 

.056 

.030 

.005 

.001 

— 

.001 

58 

62.09 

16.  69 

1.45 

3.  76 

1.93 

6.  08 

3.  36 

1.  84 

1.47 

0. 19 

0.  32 

0.  39 

trace 

0. 10 

99.  77 

Al.  I 

1.035 

.163 

t 

.009 

.052 

.048 

.109 

.054 

.020 

.004 

.003 

— 

.001 

59 

65.  54 

16.  52 

1.40 

2.49 

2.  52 

4.  88 

4.09 

1.95 

0.  59 

0.12 

0.39 

0.18 

0.  06 

trace 

100.  73 

Al.  I 

1.092 

.162 

.009 

.035 

.063 

.087 

.066 

.021 

.005 

.001 

.001 

— 

60 

59.  48 

17.  25 

2. 15 

4.06 

2.  67 

6.  50 

3.  53 

2.  27 

0.  71 

0.  09 

0.  93 

0.33 

0. 11 

0.  09 

100. 17 

Al.  I 

.991 

.169 

.014 

.057 

.007 

.116 

.057 

.024 

.011 

.002 

.002 

.001 

61 

57.41 

17.71 

2. 16 

5.01 

3. 38 

6.  73 

3. 12 

1.82 

1.14 

0.  20 

none 

1.04 

0.  24 

0. 15 

0.  09 

100.  26 

Al.  I 

.964 

.173 

.014 

.070 

.085 

.120 

.050 

.020 

.012 

.002 

.002 

.001 

DOSALANE - TONALOSE. 


287 


ORDER  4.  QUARDOFELIC.  AUSTRA RE— Continued. 


’  SUBRANG  4.  DOSODIC.  TONALOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO 

Li,0 

trace 

trace 

Q  14.9 
or  7.8 
ab  33. 0 
an  24. 7 

di 

hy 

mt 

il 

5.8 

9.2 

2.6 

0.9 

Mount  Shasta,  Cali¬ 
fornia. 

Id.  N.  Stokes. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  190,  1897. 

Hornblende- 

andesite. 

SrO 

LioO 

trace 

trace 

Q  19.8 
or  13.3 
ab  26.7 
an  23.6 

di 

by 

mt 

il 

hm 

5. 4 

4.1 

3.2 
0.6 
1.8 

Burney  Butte, 

Shasta  County, 
California. 

R.  B.  Riggs. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  195,  1897. 

Pyroxene- 

andesite. 

Dried  at  105°. 

SO., 

SrO 

Li.O 

trace 

? 

trace 

Q  13.1 
or  7. 8 
ab  35. 1 
an  25. 0 

di 

hy 

il 

hm 

6.3 
5.9 
1.0 

5.4 

Burney  Creek, 

Shasta  County, 
California. 

R.  B.  Riggs. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  195,  1897. 

Hornblende- 

andesite. 

Dried  at  105°. 

Cr.>0:J 

SrO 

LioO 

'  none 
0.04 
trace 

Q  14.7 
or  10.0 
ab  32.0 
an  26.4 

di 

by 

mt 

il 

2.4 

10.1 

2.6 

0.9 

Crater  Peak, 
n.  Lassen  Peak, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  197,  1897. 

Hypersthene- 

andesite. 

• 

Dried  at  110°. 

SrO 

LioO 

0.12 

none 

Q  16.6 
or  7.8 
ab  32. 0 
an  29.7 

di 

hy 

mt 

il 

2.6 

5.4 

3.9 

1.2 

Tuscan  Buttes, 
n.  Lassen  Peak, 
California. 

W.  F.  Ilille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  195,  1897. 

Hornblende- 

andesite. 

Dried  at  105°. 

Cr203 

SrO 

Li20 

trace? 

0.02 

trace 

Q  11.1 
or  12.2 
ab  30.4 
an  33.4 

di 

hy 

mt 

il 

6.4 

10.5 

2.8 

1.1 

Bailey  Creek, 

Lassen  Peak, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  197,  1897. 

Hypersthene- 

andesite. 

Dried  at  110°. 

SrO 

Li20 

0.04 

trace 

Q  17.8 
or  9. 5 
ab  33. 0 
an  23.4 

di 

hy 

mt 

il 

4.2 

8.2 
3.2 
0.8 

Near  Suppan’s  Moun¬ 
tain,  Tehama 
County,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  196,  1897. 

Hvpersthene- 

andesite. 

Dried  at  110°. 

SrO 

Li20 

0. 02 
trace 

Q  11.3 
or  7.8 
ab  30.9 
an  29. 7 

di 

hy 

mt 

il 

4.5 

9.6 
4.2 
0.9 

Suppans  Mountain, 
Tehama  County, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  196,  1897. 

Ilypersthene- 

andesite. 

Dried  at  110°. 

SrO 

LioO 

trace 

trace 

Q  17.4 
or  8. 3 
ab  28. 3 
an  27.  8 

di 

hy 

mt 

il 

1.8 

8.7 

4.6 

1.1 

Near  Pilot  Peak, 
Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S., 
II,  p.  490,  1894. 

Hornblende- 

andesite. 

so3 

Cl 

SrO 

Li20 

trace 

0. 03 

trace 

trace 

Q  13.4 
or  7.8 
ab  33.0 
an  25.0 

di 

hy 

mt 

il 

6.3 

7.6 

4.2 

1.2 

Spanish  Peak, 

Plumas  County, 

‘  California. 

H.  N.  Stokes. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  724,  1896. 

Quartz-diorite. 

SrO 

LioO 

0.05 

trace 

Q  12.0 
or  11.7 
ab  30.4 
an  29.2 

di 

hy 

mt 

il 

3.3 

6.5 

1. 6 
0.9 

Mount  Ingalls, 

Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

J.  G.,  Ill,  p.  407, 

1895. 

Hornblende- 

pyroxene- 

andesite. 

Also  in  17  A.  R. 
U.  S.  G.  S.,  I, 
p.  731,  1896. 

SrO 

Li20 

trace 

none 

Q  19.3 
or  12.8 
ab  29. 3 
an  16. 7 

di 

hy 

mt 

il 

9.2 
7.1 

2.3 

1.4 

Near  Bangor, 

Butte  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S., 
II,  p.  482,  1894. 

Granodiorite. 

- 

S03 

Cr.,03 

SrO 

Li«0 

0.06 

trace 

trace 

none 

Q  11.9 
or  10. 0 
ab  29. 9 
an  22. 8 

di 

hy 

mt 

il 

9.8 

10.7 

3.2 

0.8 

Downieville,  Sierra 
County,  California. 

H.  N.  Stokes. 

H.  W.  Turner, 

J.  G.,  Ill,  p.  407, 1895. 

Andesite 
( quartz¬ 
bearing). 

SrO 

LioO 

0. 04 
trace 

Q  14.0 
or  11. 1 
ab  28. 8 
an  27. 0 

di 

hy 

mt 

il 

4.2 

7.6 

5.1 

0.6 

Poker  Flat,  Sierra 
County,  California. 

W.  F.  Hille- 
brand. 

II.  W.  Turner, 

J.  G.,  Ill,  p.  407, 1895. 

Hornblende- 

pyroxene- 

andesite. 

Also  in  17  A.  R. 
U.  S.  G.  S.,I, 
p.  731,  1896. 

Q  17.5 
or  16.7 
ab  29. 3 
an  21.1 

di 

hy 

mt 

il 

2.1 

8.7 

2.1 

0.8 

Grass  Valley,  Nevada 
County,  California. 

H.  N.  Stokes. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  75,  1896. 

Quartz- 

porphyrite. 

so3 

0.10 

Q  19.0 
or  11.1 
ab  28. 3 
an  24. 7 

di 

hy 

mt 

il 

up 

2.4 

8.8 

2.1 

0.6 

1.0 

Nevada  City,  Nevada 
County,  California. 

H.  N.  Stokes. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  59,  1896. 

Hornblende- 

porphyrite. 

SrO 

Li20 

trace 

trace 

Q  19.4 
or  11.7 
ab  34. 6 
an  20. 9 

di 

hy 

mt 

il. 

2.7 

7.7 
2.1 
0.8 

Ophir,  Placer  County, 
California. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

14  A.  R.  U.  S.  G.  S., 
11,  p.  255,  1894. 

Granodiorite. 

SrO 

Li20 

trace 

trace 

Q  11.9 
or  13.3 
ab  29. 9 
an  24. 5 

di 

by 

mt 

il 

6.3 

7.9 

3.2 

1.7 

Donner  Pass,  Placer 
County,  California. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

B.  U.  S.  G.  S.,  148, 
p.  212,  1897. 

Granodiorite. 

• 

FeSo 

NiO" 

SrO 

LiaO 

none 

0.02 

0.04 

trace 

Q  11.5 
or  11.1 
ab  26. 2 
an  28.6 

di 

hy 

mt 

il 

3.9 

12.4 

3.2 

1.8 

Tuolumne  River, 
Amador  County, 
California. 

W.  F  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  702,  1896. 

Quart  z-diorite- 
gneiss. 

238 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE— Continued. 
RANG  3.  ALKALICALCIC.  TONALASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

H2Of 

11,0- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

62 

58. 05 

15. 46 

1.69 

5.  09 

4.  84 

6.  94 

2.  86 

2. 14 

2.  02 

0. 10 

none 

0.  72 

0. 16 

0. 14 

0.07 

100. 28 

Al.  I 

.968 

.152 

.011 

.071 

.121 

.124 

.047 

.022 

.009 

.001 

.002 

.001 

63 

62.62 

17.51 

0.  49 

4. 06 

2.84 

5.49 

3.  49 

1.76 

0.  92 

0.  22 

0.  55 

0. 12 

0.  05 

trace 

100. 12 

Al.  I 

1.044 

.172 

.003 

.057 

.071 

.098 

.056 

.019 

.007 

.001 

.001 

— 

64 

58.09 

17.46 

1. 12 

5.  08 

4.  06 

6.24 

2.  94 

2.  02 

1.45 

0.  29 

0.21 

0.95 

0. 17 

none 

0.  07 

100.  37 

Al.  I 

.968 

.171 

.007 

.071 

.102 

.ill 

.047 

.022 

.012 

.001 

— 

.001 

65 

61.05 

18.  30 

3.  49 

1.  11 

2.  59 

7.  75 

4.  06 

1.36 

0.  71 

0.  09 

trace 

trace 

100.  51 

2.  668 

A2.  II 

1.018 

.179 

.022 

.015 

.065 

.138 

.065 

.015 

.001 

— 

— 

66 

63. 13 

16.  00 

4.34 

1.52 

2.  07 

4.  45 

3.  87 

2.  65 

2.00 

99.  54 

A3.  Ill 

1.051 

.157 

.027 

.021 

.052 

.079 

.063 

.029 

67 

60.91 

18.  08 

2.  40 

3.  85 

3.  54 

5.  56 

4. 16 

1.01 

0.71 

0.  33 

trace 

100. 55 

2.  641 

A2.  II 

1.015 

.177 

.015 

.054 

.089 

.099 

.067 

.011 

.004 

— 

68 

61. 12 

17.  73 

2.  52 

3. 10 

2.  39 

5.  45 

3.  01 

2.  09 

2.  54 

99.  95 

2.  582 

A3.  Ill 

1.019 

.173 

.015 

.043 

.  060 

.097 

.048 

.022 

69 

62.  74 

13.  67 

3.39 

4.  35 

1.74 

6.  01 

4.  25 

1.23 

2.  02 

none 

trace 

0. 18 

0.  42 

100. 00 

A2.  II 

1.046 

.134 

.021 

.061 

.044 

.107 

.069 

.013 

— 

.001 

.006 

70 

59.  89 

15.  85 

5.  21 

3.  82 

4. 15 

5.  98 

2.  77 

1.34 

0.  74 

0.  02 

0/48 

trace 

0. 12 

0.  03 

100. 53 

Al.  I 

.998 

.  155 

.032 

.053 

.104 

.107 

.045 

.014 

.006 

— 

.002 

— 

71 

65.  39 

15.  49 

2.  80 

1.99 

2.  06 

4.  48 

4.56 

1.59 

0. 55 

0. 11 

99.02 

2.  61 

B3.  IV 

1.090 

.152 

.017 

.028 

.052 

.080 

.074 

.017 

.001 

72 

63.  56 

15.  43 

3.  02 

2.  43 

2.55 

4.  33 

4.02 

2.41 

1.09 

0.95 

0.17 

100.  01 

A2.  II 

1.059 

.151 

.019 

.033 

.064 

.077 

.064- 

.025 

.012 

.001 

73 

63.  36 

16. 35 

2. 12 

3.05 

3.  28 

4.79 

3.  58 

2.  92 

0.99 

0. 13 

100.  57 

A3.  Ill 

1.056 

.160 

.013 

.043 

.082 

.086 

.058 

.031 

.001 

74 

61.09 

15.96 

4.  29 

2.  03 

1.06 

6.  66 

2.89 

2.51 

1.44 

0. 95 

0.  22 

99.10 

2.  655 

B2.  Ill 

1.018 

.156 

.027 

.028 

.027 

.119 

.047 

.027 

.012 

.002 

75 

61.04 

15.  72 

5. 03 

2. 15 

3.  61 

5.  34 

4.  02 

2.  66 

0.  58 

0.  45 

100.  60 

A3.  Ill 

1.017 

.154 

.031 

.030 

.090 

.095 

.064 

.029 

.006 

76 

60.  05 

15.  59 

6. 95 

0.  65 

3.61 

6.  43 

3.  83 

1.  76 

0.  47 

0.  85 

0.  25 

100. 44 

2.  728 

A2.  II 

1.001 

.152 

.044 

.010 

.090 

.114 

.061 

.019 

.010 

.002 

77 

60.  32 

16.92 

5.  88 

1.40 

3.  52 

5.64 

3.  83 

2.  42 

0.44 

100.37 

A3.  Ill 

1.005 

.166 

.036 

.019 

.087 

.101 

.061 

.025 

78 

57.91 

16.  45 

6.55 

2.  32 

4.  59 

3.73 

3.59 

1.61 

1.  70 

0.  37 

0.41 

0.  06 

99.  36 

2.  932 

A2.  II 

.965 

.161 

.041 

.032 

.115 

.066 

.058 

.017 

.004 

.003 

.001 

DOSALANE - TONALOSE. 


239 


ORDER  4.  QUARDOFELIC.  AUSTRA RE — Continued. 


SUBRANG  4.  DOSODIC.  TONALOSE— Continued. 


Inclusive. 

| 

Norm. 

1 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

FeSo 

Ni(>" 

SrO 

I.LO 

none 

none 

trace 

trace 

Q  11.0 
or  12.2 
ab  24.  6 
an  23. 1 

di  9. 2  1 
hy  13.3 
mt  2.6  1 
il  1.4 

Sonora,  Tuolumne 
County,  California. 

W.  F.  Hille- 
brand. 

II.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  731,  1896. 

Diorite. 

SrO 

LisO 

trace 

trace 

Q  10.9 
or  10.6 
ab  29.3 
an  27. 0 

hy  13.3 
nit  0.7 
il  1.1  i 

Chowchilla  River, 
Mariposa  County, 

.  California. 

W.  F.  Hille- 
brand. 

II.  W.  Turner. 

J.  G.,  Ill,  p.  403, 1895.  i 

Quartz-mica- 

diorite. 

Also  in  17  A.  R. 
U.  S.  G.  S.,  1, 
p.  691,  1896. 

S03 

Cl 

F 

SrO 

Li..O 

Org 

0.05 

0.02 

trace 

0. 04 
none 

0.11 

Q  11.2 
or  12.2 
ab  24.6 
an  28. 4 

Q  14.2 
or  8.3 
ab  34. 1 
an  27. 5 

di  2. 1 
hy  16.0 
mt  1.6 
il  1.8 

di  8.5 
hy  2.6 
mt  3. 5 
hm  1.1 

Yaqui  Creek, 

Mariposa  County, 
California. 

Santa  Catalina  Island, 
California. 

G.  Steiger. 

W.  S.  T.  Smith. 

H.  W.  Turner, 

B.  U.  S.  G.  S.,  150, 
p.  342,  1898. 

W.  S.  T.  Smith,  Pr.  Cal. 
Ac.  Sc.  (3),  Geol.,  I, 
No.  1,  p.  41,  1897. 

Quartz-mica- 

diorite. 

Pyroxene- 

andesite. 

Q  18.2 
or  16.1 
ab  33.0 
an  18. 1 

di  3.1 
hy  3.8 
mt  4.9 
hm  1.0 

Cross  Spur  Quarry, 
Washoe,  Nevada. 

R.  W.  Wood¬ 
ward. 

G.  F.  Becker, 

M.  U.  S.  G.  S.,  Ill, 
p.  152,  1882. 

Ilornblende- 

mica- 

andesite. 

Also  in 

B.  U.  S.  G.  S., 
17,  p.  33,  1885. 

Q  13.6 
or  5. 1 
ab  35. 1 
an  27. 5 

hy  13.4 
mt  3. 5 
il  0.6 

Mount  Iztaccihuatl, 
Mexico. 

A.  Rohrig. 

II.  Lenk, 

Btr.  G.  Mex.,  II, 
p.  233,  1899. 

Hornblende- 

andesite. 

Near  placerose. 

Q,  19.0 
or  12.2 
ab  25.2 
an  27. 0 
C  0.6 

hy  9. 7 
mt  3.5 

Old  Providence  Is¬ 
land,  Caribbean 

Sea. 

J.  J.  II.  Teall. 

T.  G.  Bonney, 

Min.  Mag.,  VI, 
p.  42,  1886. 

Ilypersthene- 

andesite. 

S 

trace 

Q  18.5 
or  7. 2 
ab  36. 2 
an  15.0 

di  12.4 
hy  3.6 
mt  4. 9 

Island  of  Grenada, 
West  Indies. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rocks  of  Grenada, 
London,  1896,  p.  10. 

Hornblende- 

andesite. 

Average  sample. 

ZrO., 

Cl 

S 

CoO 

CuO 

Pb 

none 

0. 06 

none 

none 

0. 07 
none 

Q  19.3 
or  7.8 
ab  23.6 
an  26. 7 

di  2.4 
hy  11.2 
nit  7. 4 
il  0.9 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contrib. 

Hornblende- 

porphyrite. 

Dried  at  100°. 

Q,  20.4 
or  9. 5 
ab  38. 8 
an  17.0 

di  5.3 
hy  4.4 
m’t  4. 0 

Cumbal  Volcano, 
Colombia. 

R.  Kiich. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  167,  1892. 

Pyroxene- 

dacite. 

Sum  low. 

S03 

0.05 

Q,  19.2 
or  13.9 
ab  33. 5 
an  17.2 

di  3.3 
hy  5.1 
mt  4. 4 
il  1.8 

Llanos  de  las  Mesas, 
Mount  Tajumbina, 
Colombia. 

Fernandez. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p<  125,  1892. 

Pyroxene- 

hornblende- 

dacite. 

Q  15.2 
or  17.2 
ab  30. 4 
an  19. 7 

di  3.5 
hy  TO.  5 
mt  3. 1 

Quebrada  Chuchala 
Chiquita,  Cerro 'Ne¬ 
gro  Mayasquer, 
Colombia. 

Fischer. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  186,  1892. 

Pyroxene- 

hornblende- 

dacite. 

* 

Q  20.8 
or  15. 0 
ab  24. 6 
an  22. 8 

di  5. 8 
no  1.2 
mt  3. 7 
il  1.8 
hm  1.8 

S’ma  Virgen  de  Ya- 
nancal,  Loma  de 
Ales,  Colombia. 

Bragard. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  145,  1892. 

Hornblende- 

andesite. 

Sum  low. 

Q  12.8 
or  16.1 
ab  33.5 
an  17. 0 

di  7.4 
hy  5.6 
nit  5. 6 
il  0.9 
hm  1.1 

Penon  de  Pitayo, 
Colombia. 

Schroder. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  105,  1892. 

Hornblende- 

andesite. 

Q,  14.7 
or  10.6 
ab  32. 0 
an  20. 0 

di  9.1 
hy  4.8 
il  1.5 
hm  7. 0 

Quebrada  del  Molino, 
Azufral  de  Tuquer- 
res,  Colombia. 

Bragard. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  151,  1892. 

Pyroxene- 

andesite. 

Q  13.3 
or  13.9 
ab  32. 0 
an  22.2 

di  4.5 
hy  6.6 
mt  4.4 
hm  2.  7 

Chimborazo,  Ecuador. 

A.  Schwager. 

Schwager  and  Giimbel, 
Geogn.  J’heft,  Cassel, 
VII,  p.  74,  1895. 

Hornblende- 

andesite. 

s 

0.07 

Q  16.1 
or  9. 5 
i  ab  30. 4 
an  18.  3 

1  C  2.0 

hy  11.5 
mt  6. 5 
il  0.6 
hm  2.0 

j  Don  Pablo,  Coquim- 
bo,  Chile. 

F.  v.  Wolff. 

F.  v.  Wolff, 

Z.  D.  G.  G  ,  LI, 
p.  502,  1899. 

Augite- 

porphyrite. 

240 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE— Continued. 

RANG  3.  ALKALI CALCIC.  TONALASE— Continued. 


No. 

Si02 

A1A 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

C02  i 

Ticy 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

79 

60.32 

17.10 

4.  74 

1.12 

2.  89 

3.51 

5.  06 

2. 11 

1.99 

0.  81 

0.  05 

trace 

99.  70 

2.  609 

A3.  Ill 

1.005 

.166 

.029 

.015 

.072 

.062 

.081 

.022 

— 

— 

80 

58.  46 

15. 13 

5.34 

2.  40 

3.  84 

4.  98 

3.  25 

2.  74 

2.  23 

0.69 

0.  25 

99.31 

B2.  Ill 

.974 

.148 

.033 

.033 

.096 

.089 

.052 

.029 

.008 

.002 

(99. 71) 

81 

58.  67 

14.  37 

1.64 

6.  94 

4.65 

7.39 

3.01 

1.42 

2.  02 

trace 

100. 11 

A3.  Ill 

.978 

.141 

.010 

.096 

.116 

.132 

.048 

.015 

— 

82 

58.  07 . 

17.  62 

4.97 

3.09 

1.46 

5.  23 

3.  31 

2. 15 

4. 15 

trace 

100.  05 

A3.  Ill 

.968 

.173 

.031 

.043 

.037 

.093 

.053 

.023 

83 

57.  57 

14.  25 

6.  04 

3.  95 

4.  24 

6.  87 

2.98 

1.08 

1.25 

0.  30 

trace 

0. 15 

0.  27 

99. 14 

B2.  Ill 

.960 

.140 

.037 

.  055 

.106 

.123 

.048 

.012 

.001 

.004 

84 

58.  21 

15.  54 

6.  52 

1.78 

2.  60 

4.  40 

2.96 

2.58 

0.56 

2.  70 

2.09 

0.32 

0.  26 

100.  52 

A2.  II 

.970 

.152 

.041 

.025 

.065 

.078 

.048 

.027 

.025 

.002 

.004 

85 

57.  29 

15.  71 

4.54 

3. 18 

4.  30 

5.40 

4.  04 

1.93 

2.  69 

0.  68 

0.  29 

100.  05 

A2.  II 

.955 

.154 

.028 

.044 

.108 

.096 

.065 

.020 

.008 

.004 

86 

65. 16 

15.56 

2. 11 

3.39 

2.  40 

6.  70 

2.  54 

1.47 

1.11 

0.36 

100.  80 

A3.  Ill 

1.086 

.152 

.013 

.048 

.060 

.120 

.041 

.016 

.005 

87 

63.18 

17.03 

0.  24 

6.  37 

0.  92 

4.17 

4.  44 

2.91 

0.  52 

0.-23 

100.  20 

A3.  HI 

1.053 

.167 

.002 

.089 

.023 

.075 

.071 

.031 

.002 

88 

58.  06 

15. 44 

2. 19 

4.  24 

4.  68 

6.52 

3. 13 

1.51 

2.  79 

0.  32 

1.  11 

0.21 

100. 37 

2.  659 

A2.  II 

.968 

.151 

.014 

.059 

.117 

.116 

.050 

.016 

.013 

.002 

89 

57.  73 

16.  05 

2.  54 

5.14 

1.93 

4.  76 

4.  04 

2.  58 

2.  02 

0.  20 

1.85 

0.  52 

100. 13 

2.  723 

A2  II 

.962 

.157 

.015 

.071 

.048 

.085 

.064 

.027 

.023 

.004 

90 

64.  48 

14.  58 

4.  60 

0.  93 

1.13 

4.  00 

3.  60 

0.99 

2.  02 

0.  94 

3.  07 

0.  58 

0.  20 

101.17 

2.  593 

B2.  Ill 

1.075 

.143 

.029 

.013 

.028 

.071 

.058 

.011 

' 

.038 

.004 

.003 

91 

63. 10 

14.  26 

5.73 

1.06 

1.05 

3.  70 

3.  85 

1.09 

1.31 

, 

0.  46 

3.46 

0.57 

0.  21 

99.  90 

2.446 

A2.  II 

1.052 

.140 

.035 

.015 

.026 

.066 

.062 

.012 

.043 

.004 

.003 

92 

62.  78 

14.69 

5.30 

1.06 

1.07 

3.84 

3.  78 

1.13 

1.  78 

0.  54 

3. 10 

0.58 

0. 25 

99.  95 

2.  445 

A2.  II 

1.046 

.144 

.033 

.015 

.028 

.069 

.061 

.012 

.038 

.004 

.004 

93 

61.69 

15.  23 

4.  97 

0.  89 

1.03 

5.41 

3.  75 

1.04 

1. 10 

0.  52- 

3.  69 

0.  51 

0.  27 

100. 15 

2.  522 

A2.  II 

1.028 

.149 

.031 

.012 

.026 

.096 

.060 

.011 

.  046 

.003 

.004 

(100.05) 

94 

57.  38 

16.  92 

5.  70 

5.  84 

2.  00 

3.  66 

4.03 

2.  08 

0.  84 

0.  83 

trace 

trace 

99.28 

2.  544 

B2.  Ill 

.  956 

.166 

.035 

.080 

.050 

.066 

.064 

.022 

.010 

_ 

— 

• 

95 

59.86 

17.12 

7.54 

0.  52 

4.02 

5.08 

3.  08 

1.  72 

0.  25 

0. 15 

0.  22 

0.  22 

trace 

99.  79 

2.  75 

A2.  II 

.998 

.168 

.047 

.007 

.101 

.091 

.050 

.018 

1 

.003 

.002 

— 

16° 

DOSALANE - TONALOSE. 


241 


ORDER  4.  QUARDOFELIC.  A USTRARE— Continued. 
SUBRANG  4.  DOSODIC.  TONALOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  11.5 
or  12.2 
ab  42.4 
an  17. 2 

by 

mt 

hm 

7.2 
3.5 

2.2 

’  Aconcagua,  Argen¬ 
tina. 

R.  W.  Gray. 

T.  G.  Bonney, 

G.  M.,  XXXVI, 
p.  4,  1899. 

Hornblende- 

andesite. 

Near  dacose. 

Q  14.2 
or  16. 1 
ab  27.2 
an  18.6 

di 

by 

mt 

il 

hm 

4.8 
7.4 

5.8 
1.2 
1.3 

Average  of  British 
igneous  rocks. 

Various  ana¬ 
lysts. 

A.  Harker, 

G.  M.,  XXXVI, 
p.  220,  1899. 

Cf.  Nos.  1,  2,  3. 
Sum  incorrect. 

Q  11.3 
or  8.3 
ab  25.2 
an  21.  7 

di 

by 

mt 

12.4 

16.8 

2.3 

Eskdale  Muir,  Dum¬ 
fries,  Scotland. 

Wilson. 

J.  J.  H.  Teall, 

Q.  J.  G.  S. ,  XL, 
p.  227,  1884  (quoted). 

Andesitic  ba¬ 
salt. 

Also  in  Brit. 
Petr.,  p.  196, 
1888. 

Q  16.6 
or  11.8 
ab  27.8 
an  25. 9 

C  0.4 

by 

mt 

5.3 

7.2 

Beinn  More,  Island  of 
Mull,  Scotland. 

G.  H.  Perry. 

J.  W.  Judd, 

Q.  J.  G.  S.,  XLVI, 
p.  349,  1890. 

Propylite. 

Not  fresh. 

s 

0.19 

Q  16.4 
or  6. 7 
ab  25. 2 
an  22. 2 

di 

hy 

mt 

9.5 

8.5 

8.6 

Great  Ayton,  Eng¬ 
land. 

W.  F.  K.  Stock. 

J.  J.  H.  Teall, 

Q.  J.  G.  S.,  XL, 
p.  224,  1884. 

Andesite. 

Sum  low. 

Q  20.9 
or  15.0 
ab  25.2 
an  21. 7 

by 

il 

hm 

6.5 

3.9 

6.5 

Grtiflasian,  Rddd, 
Sweden. 

Id.  Santesson. 

P.  J.  Holmquist, 

Afv.  Sv.  G.  und., 

No.  181,  p.  73,  1899. 

Porphyrite. 

Not  fresh. 

Q  9.8 
or  11.1 
ab  34. 1 
an  19.2 

di 

by 

mt 

il 

5.9 

9.1 
6.5 

1.2 

Svanken,  Rodo, 
Sweden. 

H.  Santesson. 

P.  J.  Holmquist, 

Afh.  Sv.  G.  Und., 

No.  181,  p.  63,  1899. 

Syenite- 

porphvrv. 

Not  fresh. 

Near  andose. 

Q  26.0 
or  8.9 
ab  21. 5 
an  26. 4 

di 

hy 

mt 

5.  7 
7.8 
3.0 

Loytokorpi,  Kan- 
kaanpaa,  Finland. 

H.  Berghell. 

J.  J.  Sederholm, 

B.  C.  G.  Finl.,  6, 
p.  74,  1897. 

Porphyroid. 

Metamor¬ 

phosed. 

Near  bandose. 

so3 

0. 19 

Q  11.5 
or  17.2 
ab  37.2 
an  18. 1 

di  2. 5 
hy  12.5 
mt  0. 5 

Zwingenberg,  Melibo- 
cus  Mountains, 
Hesse. 

Heu  rich. 

A.  Osann, 

Mit.  Bad.  G.  L-A.,  11, 
p.  385,  1893. 

Malchite. 

S03  for  S. 

so3 

Org 

0. 16 
o.ol 

Q.  13.3 
or  8.9 
ab  26. 2 
an  23. 6 

di 

hy 

mt 

il 

7.0 

12.5 

3.2 

2.0 

Kronweiler, 

Rh.  Prussia. 

Bdttcher. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  290,  1892. 

Bronzite- 

porphyrite- 

pitchstone. 

so3 

0. 77 

Q  11.8 
or  15.0 
ab  33. 5 
an  18. 3 

di 

hy 

mt 

il 

ap 

1.6 

8.4 

3.5 
3.5 

1.2 

Staffelhof, 

Nahe  River, 

Rh.  Prussia. 

K.  Gremse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  309,  1892. 

Augite- 

porphyrite. 

F 

0.05 

Q  29.5 
or  6. 1 
ab  30. 4 
an  19. 7 

C  0.3 

by 

il 

hm 

ru 

2.8 
2.0 
4. 6 
2.1 

Froschberg, 

Siebengebirge, 

Rh.  Prussia. 

von  Reis. 

W.  Hocks, 

Jb.  Pr.  G.  L-A.,  XII, 
p.  16*,  1893. 

Andesite. 

Sum  high. 

Ti02  high? 

F 

0.05 

Q  27.0 
or  6. 7 
ab  32. 5 
an  18.  3 

hy 

il 

hm 

ru 

2.6 

2.3 

5.7 

2.3 

Froschberg, 

Siebengebirge, 

Rh.  Prussia. 

von  Reis. 

W.  Hocks, 

Jb.  Pr.  G.  L-A.,  XII, 
p.  16*,  1893. 

Andesite. 

Ti02  high? 

F 

0.05 

Q  26.5 
or  6. 7 
ab  32. 0 
an  19. 2 

hy 

il 

hm 

ru 

2.8 

2.3 

5.3 

1.9 

Froschberg, 

Siel:  engebirge, 

Rh.  Prussia. 

von  Reis. 

W.  Hocks, 

Jb.  Pr.  G.  L-A.,  XII, 
p.  16*,  1893. 

Andesite. 

Ti02  high? 

F 

0.05 

Q  24.1 
or  6. 1 
ab  34. 1 
an  21.7 

hy 

tn 

il 

hm 

ru 

2.6 

3.6 

1.8 

5.0 

1.3 

Froschberg, 

Siebengebirge, 

Rh.  Prussia. 

von  Reis. 

W.  Hocks, 

Jb.  Pr.  G.  L-A.,  XII, 
p.  16*,  1893. 

Andesite. 

TiOjj  high? 

Q  13.4 
or  12.2 
ab  33. 5 
an  18. 3 
C  1.4 

hy 

mt' 

il 

9.6 

8.1 

1.5 

Lauterbach  Thai, 
Siebengebirge, 

Rh.  Prussia. 

E.  Kaiser. 

E.  Kaiser, 

Vh.  Nh.  Ver.  Bonn, 
LIV,  p.  178,  1897. 

Andesite. 

Sum  low. 

Dried  at  125°. 

Q  18.4 
or  10. 0 
ab  26.2 
an  25. 3 
C  0.9 

hy 

mt 

hm 

10.1 

1.6 

6.4 

Galgenberg,  Hesse. 

Not  stated. 

Chelius  &  Klemm, 

Erl.  G.  Kte.  Hesse, 
III,  p.  8,  1894. 

Hornblende- 

granite. 

Iron  oxides? 

14128— No.  14—03 


16 


242 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 


RANG  3.  ALKALICALCIC.  TONALASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.20 

K.,0 

h2o+ 

h2o- 

O 

o 

tc 

_ 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

96 

57.85 

17.20 

5.04 

1.53 

2.  81 

6.  69 

3.  21 

2.26 

2.  00 

0.85 

0.  83 

0. 15 

100.  56 

2.  676 

A2.  II 

.964 

.167 

.031 

.021 

.070 

.120 

.051 

.024 

.010 

.001 

97 

59.  60 

14.  30 

1.49 

6.  43 

1.49 

4.  54 

2.  90 

1.84 

4.  63 

2.  02 

1. 12 

0. 24 

100.  81 

2.  646 

A2.  II 

.993 

.140 

.009 

.089 

.037 

.080 

.047 

.020 

.013 

.002 

98 

59.32 

13.  33 

] .  36 

7.32 

1.79 

4. 37 

2.  58 

2.30 

3.  34 

2.91 

1.04 

0. 18 

100.  00 

2.  736 

A2.  II 

.989 

.130 

.009 

.101 

.045 

.078 

.042 

.024 

.012 

.001 

99 

56.  69 

14.  99 

3.39 

4.38 

3.39 

5.  92 

3.  30 

2.05 

3.  43 

1.00 

1.34 

0. 22 

100.  25 

2.  67 

A2.  II 

.945 

.147 

.021 

.061 

.085 

.105 

.053 

.022 

.017 

.002 

100 

61.40 

19.  98 

1.28 

4.08 

3.  67 

4.  43 

2.  21 

1.33 

1.44 

99.  82 

A3.  Ill 

1.023 

.196 

.008 

.057 

.092 

.078 

.035 

.014 

101 

60.  84 

18.  75 

1.40 

3.  48 

1.95 

5.  32 

2.  88 

2. 13 

3. 15 

0.  29 

100. 19 

A3.  Ill 

1.014 

.184 

.009 

.049 

.049 

.094 

.047 

.022 

.004 

102 

66.  91 

15.20 

n.  d. 

6.  45 

2.  35 

3.  73 

3.33 

0.  86 

0. 16 

98.  99 

2.  724 

C4.  V 

1.115 

.149 

— 

.090 

.059 

.066 

.054 

.009 

19° 

103 

62.  27 

16.  92 

2.40 

2.  59 

2.  87 

4.  78 

4.  72 

1.47 

1.22 

0. 16 

trace 

99.  47 

2.  584 

B2.  Ill 

1.038 

.166 

.015 

.036 

.072 

.086 

.076 

.016 

.002 

— 

22° 

104 

60.  63 

16.  96 

2.  87 

2.  31 

3.  27 

6.  41 

3.58 

2.44 

1.98 

100. 45 

2.  594 

A3.  Ill 

1.011 

.166 

.018 

.032 

.082 

.114 

.058 

.026 

22° 

105 

60.  39 

16.  96 

1.50 

3.  42 

3.  81 

5.41 

3.  37 

2.  01 

3.  03 

0.  21 

trace 

99. 11 

2.  580 

B2.  Ill 

1.007 

.166 

.009 

.048 

.095 

.096 

.  055 

.021 

.003 

22° 

106 

59.  29 

15.  27 

5.21 

2.  08 

4.  42 

6. 15 

3.  31 

2.  61 

1.46 

0. 18 

100.  02 

2.614 

A3.  Ill 

.988 

.150 

.032 

.030 

.ill 

.110 

.053 

.027 

.001 

22° 

107 

63.  18 

14.64 

1.50 

5. 18 

2.  26 

7.69 

2.  48 

1.57 

0.  21 

1.36 

0.  41 

100.  48 

A3.  Ill 

1.053 

.144 

.009 

.072 

.057 

.137 

.040 

.017 

.010 

.006 

108 

59.  27 

14.  55 

2.  02 

7. 17 

3.  50 

7.  76 

2.  88 

1.62 

0.  36 

0.  91 

0.  32 

100. 36 

A3.  Ill 

.971 

.143 

.013 

.100 

.088 

.138 

.047 

.017 

.006 

.005 

109 

62.  02 

15. 15 

2.  08 

1.96 

3. 15 

5.  52 

3. 18 

1.  66 

4.  57 

99.  29 

B3.  IV 

1.034 

.149 

.013 

.028 

.079 

.098 

.051' 

.018 

110 

59.  94 

15.  52 

2.  53 

2.00 

3.62 

6.  76 

4.46 

1.29 

3.  35 

99.  47 

A3.  Ill 

.999 

.152 

.016 

.028 

.091 

.121 

.072 

.014 

111 

63.  61 

17.  64 

1.81 

2.09 

3. 19 

5.  22 

4.  70 

1.28 

0.  57 

100. 11 

A3.  Ill 

1.060 

.173 

.011 

.030 

.080 

.093 

.  076 

.014 

112 

61.  90 

17.28 

1.70 

5.  76 

2.  76 

4.68 

2.  52 

1.80 

1.30 

99.  70 

A3.  Ill 

1.032 

.169 

.011 

.080 

.069 

.084 

.040 

.019 

113 

61.29 

17.  68 

6.03 

0.  30 

2.  45 

5.  61 

4.  28 

1.38 

0.  96 

0.  65 

100.  63 

2.  440 

A3.  Ill 

1. 022 

.173 

.038 

.004 

.061 

.100 

.069 

.015 

.008 

DOSALANE - TON A LOSE. 


243 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 


SUBRANG  4.  DOSODIC.  TON ALOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

0.14 

Q  13.9 
or  13.3 
ab  26. 7 
an  25.6 

di 

hy 

mt 

il 

hm 

6.1 

4.2 
2.6 
1.5 

3.2 

Himmelberg, 

Blatt  Lebach, 
Prussia. 

Hampe. 

Weiss  and  Grebe, 

Erl.  G.  Kte.  Pr.,  Bl. 
Lebach,  p.  34,  1889. 

Bronzite- 

porphyrite. 

S03  for  S. 

so3 

Org 

a.  19 

0.02 

Q  20.0 
or  11.1 
ab  24. 6 
an  20. 3 

di 

hy 

mt 

il 

1.6 

11.8 

2.1 

2.0 

Niederbrombach, 

Oberstein, 

Harz  Mountains. 

Bottcher. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  293,  1892. 

Augite- 

porphyrite. 

Not  fresh. 

S03  for  S. 

so3 

Org 

0. 14 

0.02 

Q  20.2 
or  13.3 
ab  22.0 
an  15. 0 

di 

hy 

mt 

il 

5.6 

12.2 

2.1 

1.8 

Bielstein, 

Riibeland, 

Harz  Mountains. 

Gremse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X. 
p.  290,  1892. 

Quartz-augite- 

porphvrite. 

Not  fresh. 

S03  for  S. 

S03 

0. 15 

Q  12.6 
or  12.2 
ab  27. 8 
an  19.5 

di 

hy 

mt 

il 

8.1 

7.8 

4.9 
2.5 

Werschweiler, 

St.  Wendel, 

Harz  Mountains. 

Bottcher. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  266,  1892. 

Diorite- 

porphyry. 

Not  fresh. 

S03  for  S. 

Q  25.9 
or  7. 8 
ab  18.3 
an  21. 7 

C  7.0 

hy 

mt 

15.  7 
1.9 

Barenstein, 

Riesengebirge, 

Silesia. 

W.  Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII,  . 
p.  211,  1899. 

Diorite. 

Near  bandose. 
Ncft  fresh. 

Q  19.4 
or  12.2 
ab  24. 6 
an  26. 1 

C  2.1 

hy 

mt 

il 

10.2 

2.1 

0.6 

Wolfsgrube, 

Ursulaberg, 

Carinthia. 

Not  stated. 

H.  v.  Foullon, 

Vh.  Wien.  G.  R-A., 
XXIII,  p.  93,  1889. 

Quartz-mica- 

porphyrite. 

Q  27.4 
or  5. 0 
ab  28.  3 
an  18. 3 
C  2.0 

hy 

17.8 

Lake  Avio,  Adamello 
Mountains,  Tyrol. 

v.  Rath. 

v.  Rath, 

Z.  D.  G.  G.,  XVI, 
p.  247,  1864. 

Tonalite. 

Low  sum  due 
to  nondeter¬ 
mination  of 
Fe2  03? 

Cl 

0.07 

Q  14.0 
or  8. 9 
ab  39.8 
an  20. 6 

di 

hy 

mt 

2.7 

8.7 
3.5 

Punta  della  Civitate, 
Capraia  Island, 

Italy. 

A.  Rohrig. 

H.  Emmons, 

Q.  J.  G.  S.,  XLIX, 
p.  142,  1893. 

Andesite. 

Sum  low. 

Q  12.9 
or  14. 5 
ab  30.4 
an  22. 8 

di 

hy 

mt 

7.3 

6.4 
4.2- 

Poppa  alia  Nave, 
Capraia  Island, 

Italy. 

A.  Rohrig. 

H.  Emmons, 

Q.  J.  G.  S.,  XLIX, 
p.  141,  1893. 

Andesite. 

Cl 

trace 

Q  13.9 
or  11.7 
ab  28. 8 
an  25.0 

di 

hy 

mt 

1.6 
15. 5 
2.1 

Monte  Patello, 

Capraia  Island, 

Italy. 

A.  Rohrig. 

PI.  Emmons, 

Q.  J.  G.  S.,  XLIX, 
p.  141,  1893. 

Andesite. 

Sum  low. 

Cl 

0.04 

Q  13.0 
or  15.0 
ab  27.8 
an  19.5 

di 

hy 

mt 

8.7 

7.1 

7.3 

Capraia  Island,  Italy. 

A.  Rohrig. 

H.  Emmons, 

Q.  J.  G.  S.,  XLIX, 
p.  142,  1893. 

Andesite. 

Q  23.8 
or  9. 5 
ab  21.0 
an  24. 2 

di 

hy 

mt 

ap 

4.6 
11.7 
2. 1 
3.2 

Lava  of  1 888, 

•  Yulcano,  iEolian  Is¬ 
lands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min.,  Ill, 
p.  110,  1892. 

Andesite. 

Q  12.9 
or  9.5 
ab  24.6 
an  22. 0 

di 

hy 

mt 

ap 

9. 5 

15.2 

3.0 

2.0 

Lava  of  1888, 

Yulcano,  iEolian  Is¬ 
lands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min.,  Ill, 
p.  110,  1892. 

Andesite. 

Q  20.9 
or  10. 0 
ab  26.7 
an  22.2 

di 

hy 

mt 

4.0 

8.1 

3.0 

Dubowka,  Mariupol, 
Russia. 

J.  Morozewicz. 

J.  Morozewicz,  cf.  N.  J., 
1900,  I,  p.  394. 

Hornblende- 

andesite. 

Sum  low. 

Q  11.0 
or  7.8 
ab  37.7 
an  18. 3 

di 

hy 

mt 

12.1 

5.0 

3.7 

Mokraya  Wolnowa- 
cha,  Mariupol,  Rus¬ 
sia. 

J.  Morozewicz. 

J.  Morozewicz,  cf.  N.  J., 
1900, 1,  p.  394. 

Hornblende- 

andesite. 

Q  14.7 
or  7.8 
ab  39. 8 
an  23. 1 

di 

hy 

mt 

2.3 

9.4 
2.6 

Tschchera  River,  Cau¬ 
casus  Mountains. 

L. -Lessing  and 
Krikmeyer. 

Loewinson-Lessing,  cf., 
N.  J.,  1899,  II,  p.  237- 

Andesite- 

dacite. 

Q  22.3 
or  10. 6 
ab  21. 0 
an  23. 4 

C  2.7 

hy 

mt 

16. 1 
2.6 

Ivasbek,  Caucasus 
Mountains. 

L. -Lessing  and 
Krikmeyer. 

Loewinson-Lessing,  cf., 
N.  J.,  1899,  p.  237. 

Andesite- 

dacite. 

Q  16.3 
or  8. 3 
ab  36. 2 
an  24.  7 

di 

hy 

il 

hm 

2.3 

5.0 

0.6 

6.0 

Anzeiou,  Angina, 
Greece. 

A.  Rohrig. 

H.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Hornblende- 

dacite. 

Iron  oxides  ? 

244 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS 


CLASS  II.  DOSALANE — Continued. 
RANG  3.  ALKALI CALCIC.  TONALASE— Continued. 


No. 

Si02 

A1A 

FeA 

FeO 

MgO 

CaO 

Na20 

K,0 

h2o+ 

H20- 

C02 

Ti02 

FA 

MnO 

BaO 

Sum 

Sp.  gr. 

114 

59.  94 

18.  40 

3.  69 

2.  99 

1.95 

6.  58 

3.43 

1.67 

0.  94 

0.  02 

99.61 

2.440 

A3.  Ill 

.982 

.180 

.023 

.042 

.049 

.118 

.055 

.018 

— 

115 

59.83 

17.82 

3.  62 

4.  60 

1.64 

6.88 

3.  31 

1.23 

0.  52 

0.01 

99.  44 

2.  635 

A3.  Ill 

.997 

.174 

.023 

.064 

.041 

.123 

.  053 

.014 

— 

116 

55.  46 

16.  76 

5. 15 

3.  00 

2.  44 

10.  00 

2.  94 

1.95 

1.60 

0.  21 

99.  51 

2.610 

A3.  Ill 

.918 

.164 

.032 

.042 

.061 

.179 

.047 

.022 

.003 

117 

56.  58 

14.  88 

2.31 

3.  04 

3.  76 

8.  69 

3.  36 

2. 18 

1.43 

0.  69 

2.32 

0.  77 

0. 15 

0. 16 

0.  07 

100. 39 

Al.  I 

.943 

.146 

.014 

.042 

.094 

.155 

.054 

.023 

.010 

.001 

.002 

.001 

118 

61.93 

16.  45 

4.  66 

0.  40 

2.  94 

4.  40 

4.  03 

2.  20 

2.  50 

99.51 

2.539 

A3.  Ill 

1. 032 

.161 

.029 

.006 

.074 

.079 

.065 

.  023 

15° 

119 

Or 

55.  2d 

12. 12 

8.  84 

4.91 

4.  84 

8.34 

2.  08 

1.62 

1.65 

• 

99.  65 

A3.  Ill 

.921 

.  119 

.  055 

.068 

.121 

.149 

.034 

.017 

120 

61.50 

16.  79 

3.48 

2.23 

1.96 

•5.44 

4.  78 

2.  38 

trace 

0.  36 

trace 

1.22 

100. 14 

2.  727 

A3.  Ill 

1.025 

.164 

.  022 

.030 

.049 

.096 

.077 

.025 

.017 

15° 

RANG  3.  ALKALICALCIC.  TONALASE. 


1 

60.61 

16.  61 

1.97 

5.09 

3. 10 

4.  46 

3. 11 

0.  25 

2. 45 

1.  57 

99.  22 

B3. 

IV 

1.010 

.163 

.012 

.071 

.078 

.079 

.  050 

.003 

2 

60.  40 

16.89 

1.88 

3.  72 

3.  82 

7.  25 

3.80 

0.  77 

0.  20 

0.  09 

none 

0.61 

0. 16 

0. 12 

0.  06 

99.  87 

Al. 

1 

1.007 

.165 

.012 

.052 

.096 

.129 

.061 

.008 

.008 

.001 

.002 

— 

:3 

64.  67 

16.  62 

0.51 

0.  76 

2.  26 

9.  50 

•  4. 10 

0.  34 

0.  37 

0.  08 

0.51 

0.12 

trace 

0.  02 

99.  86 

Al. 

1 

1.078 

.163 

.003 

.011 

.047 

.169 

.066 

.003 

.006 

.001 

— 

— 

4 

60.  09 

16.  43 

2. 28 

3.  01 

4.  37 

5.  76 

4.  52 

0.  70 

1.16 

0.  20 

0.  07 

0.63 

0. 12 

0. 12 

trace 

99.  80 

Al. 

I 

1.002 

.161 

.014 

.042 

.109 

.103 

.072 

.007 

.008 

.001 

.002 

— 

5 

61.  37 

15.  41 

3. 15 

3  89 

3.  48 

4.  42 

3.  76 

0.  34 

2.  70 

0.29 

0.  60 

0.  08 

0.47 

0.  08 

100. 04 

Al. 

I 

1.023 

.151 

.020 

.054 

.087 

.078 

.060 

.003 

i 

.007 

.001 

'.007 

.001 

6 

63.  82 

16.  53 

1.28 

2.93 

1.99 

5.57 

4.12 

0.  77 

1.82 

1.10 

trace 

trace 

99.  93 

2.  689 

A3. 

III 

1.064 

.162 

.008 

.040 

.050 

.100 

.066 

.008 

— 

— 

7 

64.  22 

16.  36 

2.  93 

2.  50 

1.94 

5.85 

3.  96 

0.  73 

0.  84 

0.21 

trace 

99.  54 

2.  598 

A3. 

III 

1.070 

.160 

.018 

.035 

.049 

.104 

.064 

.008 

.003 

— 

8 

57.  56 

13.  83 

2.  46 

3.  63 

4.  67 

7.27 

3.  96 

0.  48 

2.  66 

3.50 

0.17 

trace 

trace 

100. 19 

A2. 

II 

.959 

.135 

.015 

.050 

.117 

.130 

\  064 

.005 

.002 

— . 

— 

9 

56.  63 

17.  01 

6. 15 

2.  80 

4.  08 

6.  83 

4.  48 

0.25 

1. 17 

0.  02 

0. 18 

0.  28 

0.  05 

none 

100.  02 

Al. 

I 

.944 

.164 

.039 

.039 

102 

.121 

.072 

.003 

.002 

.002 

.001 

— 

10 

59.56 

16.10 

6.  28 

3.02 

3.08 

6.  32 

3.  09 

0.  80 

0.  44 

0.18 

1.80 

100.  67 

A3. 

III 

.993 

.158 

.039 

.042 

.077 

.112 

.055 

.008 

.001 

.023 

DOSALANE - PLACEROSE. 


245 


ORDER  4.  QUARDOFELIC.  AUSTRA RE— Continued. 


SUBRANG  4.  DOSODIC.  TONALOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

• 

Author’s  name. 

Remarks. 

Q  14.8 
or  10.6 
ab  28. 8 
an  29. 5 

di 

hy 

mt 

2.7 

5.6 

5.3 

Ivaimeni,  Methana, 
Greece. 

A.  Rohrig. 

H.  S.  Washington, 

J.G.,  III, 
p.  150,  1895. 

Hornblende- 

hypersthene- 

andesite. 

Q  17.0 
or  7.8 
ab  27. 8 
an  29. 7 

di 

hy 

mt 

3.7 
7.  7 
5.3 

Mount  Chelona, 
Methana,  Greece. 

A.  Rohrig. 

PI.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Hypersthene- 

andesite. 

1 

Q  9.5 
or  12.2 
ab  24.6 
an  26. 4 

di 

wo 

mt 

15.6 

1.6 

7.4 

Mount  Chondos, 
2Egina,  Greece. 

A.  Rohrig. 

PI.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Hornblende- 

augite- 

andesite. 

Near  andose. 

Q  9.3 
or  12.8 
ab  28. 3 
an  19. 2 

di 

hy 

mt 

19.1 

2.6 

4.7 

Mytilene  Island, 
Aegean  Sea. 

T.  M.  Chatard. 

.T.  S.  Diller, 

B.  U.  S.  G.  S.,  79, 
p.  29,  1891. 

Quartz-basalt. 

Near  andose. 

Q  16.7 
or  12.8 
ab  34. 1 
an  20. 3 

di 

hy 

mt 

hm 

1.3 
6.8 

1.4 
3.7 

Acropolis,  Pergamon, 
Asia  Minor. 

R.  Lepsius. 

R.  Lepsius, 

Geol.  v.  Attika,  Ber¬ 
lin,  1893,  p.  169. 

Biotite-dacite. 

Q  15.8 
or  9. 5 
ab  17. 8 
an  18. 9 

di 

hy 

mt 

17. 

5.6 

12.8 

Richmond,  Cape  Col¬ 
ony. 

Feder. 

E.  Cohen, 

N.  J.  B.  B.  V., 
p.  240,  1887. 

Quartz-diaPase. 

Q  11.9 
or  13.9 
ab  40. 3 
an  17. 2 

di 

hy 

mt 

7.6 

2.3 

5.1 

Mount  Lambie, 

Rydal,  New  South 
Wales. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 
XVI. ,  p.  44,  1883. 

Quartz- 

porphyry. 

SUBRANG  5.  PERSODIC.  PLACEROSE. 


Q 

23.8 

hy  15.6 

or 

1.7 

mt 

2.8 

ab 

26.2 

an 

22.0 

c 

3.2 

FeSo 

0.08 

Q 

14.3 

di 

7.6 

NiO 

0.02 

or 

4.4 

hy 

10.2 

SrO 

trace 

ab 

32.0 

mt 

2.8 

LLO 

trace 

an 

26.7 

il 

1.1 

SrO 

trace 

Q 

21.1 

di 

11.1 

LioO 

trace 

or 

1.7 

WO 

3.0 

ab 

34.6 

mt 

0.7 

an 

26.1 

il 

0.9 

so3 

trace 

Q 

12.8 

di 

4.8 

FeS2 

0.34 

or 

3.9 

hy  11.3 

SrO 

trace 

ab 

37.7 

mt 

3.2 

LLO 

none 

an 

22. 8 

il 

1.2 

SrO 

trace 

Q 

21.9 

hy 

12.8 

LioO 

none 

or 

1.7 

mt 

4. 6 

ab 

31.4 

il 

i.i 

an 

21.7 

c 

1.0 

Q 

21.0 

di 

2.8 

or 

4.4 

hy 

7.8 

ab 

34.6 

an 

24.5 

mt 

1.9 

Q 

99  8 

di 

3.7 

or 

4.  5 

hy 

5.4 

ab 

33.5 

mt 

4.2 

an 

24.5 

S 

none 

Q 

11.5 

di 

15.4 

or 

2.8 

hy 

9.0 

ab 

33.5 

mt 

3.5 

an 

18.3 

ZrOo 

trace 

Q 

10.9 

di 

6.9 

Cl 

0.06 

or 

1.7 

hy 

7.0 

S 

none 

ab 

37.7 

mt 

9.0 

CoO 

none 

an 

24.7 

Cu 

0.04 

Pb 

none 

Q 

19.7 

di 

3.8 

or 

4.4 

hy 

6.3 

ab 

28.8 

mt 

9.0 

an 

26.4 

Ely,  Minnesota. 


St.  Augustine  Vol¬ 
cano,  Cook  Inlet, 
Alaska. 

English  Mountain, 
Placer  County,  Cal¬ 
ifornia. 

Ophir,  Placer  County, 
California. 


Jenny  Lind,  Cala¬ 
veras  County,  Cal¬ 
ifornia. 


Pebbly  Beach,  Santa 
Catalina  Island, 
California. 

Xico  Island,  Lake 
Chaleo,  Mexico. 


Caman’s,  Barama 
River,  British 
Guiana. 

Mazaruni  District, 
British  Guiana. 


Bandai  San,  Japan. 


G.  F.  Sidener. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  S.  T.  Smith. 


A.  Roll  rig. 


J.  B.  Harrison. 


J.  B.  Harrison. 


Shimidzu. 


N.  H.  Winchell, 

23  A.R.G.Nh.S.Minn.. 
p.  204,  1895. 

G.  F.  Becker, 

18  A.  R.  U.  S.  G.  S.,III, 
p.  52,  1898. 

W.  Lindgren, 

B.  U.  S.  G.  S.,  148, 
p.  212,  1897. 

W.  Lindgren, 

14  A.  R.  U.  S.  G.  S.,II, 
p.  262,  1894. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S.,II, 
p.  473,  1894. 

W.  S.  T.  Smith, 

Pr.  Cal.  Ac.  Sc.,Geol.  I, 
p.  25,  1897. 

H.  Lenk, 

Btr.  G.  Mex.,  II, 
p.  233,  1899. 

J.  B.  Harrison, 

Rep.  G.  N.  W.  Dist. 
p.  12,  1898. 

J.  B.  Harrison, 

Priv.  Contrib. 


T.  Wada, 

Mt.  D.  Ges.  Ostas.,  V., 
p.  74,  1889. 


Felsite. 


Augite-bronz- 

ite-andesite. 


.  c  , 

Augite-gramte. 


Dike  rock,  al¬ 
lied  to  camp- 
tonite. 

Porphyrite. 


Porphvrite. 


Hornblende- 

andesite. 


Diabase. 


Mica-diorite. 


Augite-andes- 

ite. 


Bomb. 


Not  fresh. 
Dried  at  100°. 


Dried  at  100°. 


MnO  high? 
Alkalies  corr.  cf. 
N.  J.,  1890,  II, 

p.  102. 


246 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 

RANG  4.  DOCALCIC.  BANDASE. 


No. 

Si02 

A1203 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

56.  42 

16.  81 

3.  26 

6.  92 

3. 50 

5.  64 

1.21 

3.  07 

2.  25 

1.08 

0.  23 

100.  39 

2.  625 

A3.  Ill 

.940 

.165 

.020 

.096 

.088 

.101 

.019 

.033 

.008 

.003 

2 

55.  48 

19.  61 

4.  06 

6.  05 

3.  06 

8.  75 

0. 15 

1.94 

1.18 

100.  28 

A3.  Ill 

.925 

.192 

.025 

.085 

.077 

.  156 

.002 

.021 

RANG  4.  DOCALCIC.  BANDASE. 


1 

54.61 

15.  23 

3.  51 

4.  80 

4.  69 

7.41 

1.  46 

2.  70 

2.  47 

0.  32 

1.46 

0.  86 

0.  35. 

0.  09 

0.11 

100. 11 

Al.  I 

.910 

.149 

.022 

.067 

.117 

.132 

.023 

.029 

.011 

.003 

.001 

.001 

2 

56.  44 

16.17 

7.  72 

3.  00 

2.  02 

10. 13 

1.  17 

1. 18 

2.  37 

0.30 

100.  50 

A3.  Ill 

.941 

.158 

.049 

.042 

.051 

.180 

.019 

.013 

.004 

3 

60.  50 

15.  95 

6.  27 

2.  89 

3.82 

6.51 

1.65 

2.  24 

0.  84 

100. 67 

2.  69 

A3.  Ill 

1.008 

.156 

.039 

.040 

.  096 

.116 

.027 

.023 

4 

59.  55 

18.08 

2.15 

3. 13 

1.40 

9.  36 

1.53 

2.  06 

2.  27 

0.  39 

0.  24 

100.  51 

A3.  Ill 

.993 

.177 

.014 

.043 

.035 

.168 

.024 

.022 

.003 

.003 

5 

57.  69 

17.43 

0.  94 

4.  09 

4.80 

7. 18 

1.  69 

3.  06 

2.83 

0.  43 

0. 18 

100.  32 

A3.  Ill 

.962 

.170 

.006 

.057 

.•  .120 

.128 

.030 

.033 

.003 

.002 

6 

60.  50 

15.  05 

1.43 

6.  07 

3. 11 

8.61 

1.  83 

2.  02 

0.  21 

1.12 

0.34 

100. 29 

A3.  Ill 

1.008 

.147 

.009 

.085 

.078 

.153 

.030 

.021 

.008 

.  005 

7 

51. 15 

15.  92 

9.  34 

2.  87 

6.  48 

10.  40 

1. 19 

1.  61 

0.11 

0.  44 

0.  06 

0.09 

99.66 

A2.  11 

.853 

.  156 

.058 

.040 

.162 

.185 

.019 

.017 

.006 

— 

.001 

8 

63.41 

16.  50 

2.  53 

3.36 

2.  74 

5.80 

1.90 

2.  26 

1.55 

0. 10 

trace 

100. 15 

2.  498 

A3.  Ill 

1.057 

.161 

.015 

.047 

.069 

.103 

.030 

.024 

.001 

— 

RANG  4.  DOCALCIC.  BANDASE. 


1 

58.  57 

16.10 

2.  89 

6.12 

2.33  7.39 

2.  11 

1.01 

1.27 

0.21 

none 

1.41 

0.37 

0. 18 

trace 

100. 07 

Al.  I 

.976 

.158 

.018 

.085 

.058  .132 

'  .034 

.011 

.018 

.003 

.002 

2 

56.41 

15. 19 

1.  60 

6.  24 

7. 18  6.  77 

2.21 

1.34 

2.00 

0.  08 

0.  69 

0.05 

0. 11 

100.  06 

Al.  I 

.940 

.149 

.010 

.087 

. 180  . 121 

.035 

.014 

.009 

— 

.002 

3 

55.  97 

15.  60 

1.21 

6.  28 

6.83  7.31 

2.  23 

1.25 

1.85 

0. 18 

1.  11 

0.  16 

0.  08 

100. 10 

Al.  I 

.933 

.153 

.007 

.088 

. 171  . 130 

.036 

.014 

.013 

.001 

.001 

4 

55. 16 

17.  51 

2.62 

5.83 

4.  35  8.  50 

1.83 

1.08 

2.01 

0. 18 

none 

0.  64 

0.  21 

0.  15 

trace 

100. 17 

Al.  I 

.919 

.172 

.016 

.081 

. 109  . 151 

.029 

.012 

.008 

.002 

.002 

— 

5 

52.  94 

14.  70 

2.52 

7.80 

4.  49  6.  56 

3.  09 

0.  04 

2.04 

4.  86 

99.  04 

B3.  IV 

.882 

.144 

.016 

.108 

.112  .117 

.050 

— 

6 

52.31 

18.35 

5.  90 

11.06 

1.  00  7.  33 

2.90 

0.  49 

0.  35 

99.  69 

A3.  Ill 

.872 

.180 

.037 

.154 

.025  .130 

.047 

.005 

DOSALANE - BANDOSE. 


247 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 

SUBRANG  1.  PREPOTASSIC.  SAGAMOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

• 

Q  15.7  hy  18.8 
or  18.3  mt  4.6 
ab  10.0 
an  28. 1 

C  1.2 

Monte  Rado, 
n.  Lake  Bolsena, 
Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Ak.,  p.  119, 
1888. 

Augite-an  des¬ 
ite. 

Also  in  N.  J.  B. 
B.,  VI,  p.  33, 
1889. 

Q  22.1  hy  15.6 
or  11.7  mt  5.8 
ab  1.0 
an  43.4 

Hokizawa, 

Sagami,  Japan. 

Not  stated. 

T.  Harada, 

Die.  Jap.  Inseln. 
Berlin,  1890,  p.  118. 

Tonalite. 

SUBRANG  2.  SODIPOTASSIC. 


Zr02 

S03 

Cl 

SrO 

LUO 

none 

none 

none 

0.04 

trace 

Q  13.6 
or  16.1 
ab  12.1 
an  27.0 

di  7.9 
hy  12.  6 
mt  5. 1 
il  1.5 

Zosel  District, 
Daylight,  Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

B.  U.  S.  G.  S.  168,  p. 
119,  1900. 

Andesite-por¬ 

phyry. 

Not  fresh. 

Q  23.5 
or  7.2 
ab  10.0 
an  35.0 

di  11.5 
mt  9.7 
hm  1. 1 

Koijiirvi,  TJrjala, 
Finland. 

A.  W.  Forsberg. 

J.  J.  Sederholm, 

Finl.  G.  Und.  Bl.,  18, 
p.  49, 1890. 

TJralite-por- 

phyry. 

Also  in  T.  M.  P. 

M.,  XII,  p. 

'  120, 1891. 

Q  23.4 
or  12.8 
ab  14.1 
an  29. 5 

di  2.2 
hy  8. 6 
mt  9.2 

Unkersdorf,  Saxony. 

W.  Bruhns. 

W.  Bruhns, 

Z.  D.G.G.,  XXXVIII, 
p.  752, 1886. 

Augite- 

hornblende- 

porphyrite. 

so3 

Cl 

0.35 

trace 

Q,  21.2 
or  12.2 
ab  12.  6 
an  36.4 

di  8.7 
hy  3.0 
mt  3. 2 

Monte  Cimino,  Vi¬ 
terbo,  Italy. 

L.  Ricciardi. 

A-  A'erri, 

B.Soc.G.  I tal.,  VIII, 
p. 403, 1889. 

Andesite. 

Alkalies? 

so3 

trace 

Q  10.7 
or  18.3 
ab  15. 7 
an  29.  7 

di  4. 9 
hy  16.4 
mt  1. 4 

Monte  Cimino,  Vi¬ 
terbo,  Italy. 

L.  Ricciardi. 

A.  V  erri, 

B.  Soc.  G.  Ital.,  VIII, 
p. 403, 1889. 

Andesite. 

Alkalies? 

> 

Q  19.4 
or  11.7 
ab  15.7 
an  26.  7 

di  7.7 
hy  14. 1 
mt  J2. 1 
ap  2. 5 

Lava  of  1888,  Volca¬ 
no,  Aeolian  Islands. 

L.  Ricciardi. 

G.  Merealli, 

Gior.  Min.,  Ill,  p.  110, 
1892. 

Andesite. 

Q  10.2 
or  9.5 
ab  10.0 
an  33.4 

di  14.1 
hy  9.7 
mt  7. 9 
il  0.9 
hm  3.5 

Seven  Pagodas, 
Chingelput, 

Madras,  India. 

P.  Bruhl. 

T.  H.  Holland, 

Rec.  G.  S.  India, 

XXX,  p.  35, 1897. 

Augite-diorite. 

Nearly  in  salfe- 
mane.  Also  in 
Q.  J.  G.  S. , 
LIII,  p.  409, 
1897. 

Q  25.6 
or  13.3 
ab  15.7 
an  28. 6 
C  0.4 

hy  11.1 
mt  3. 5 

Singalang  Volcano, 
Sumatra. 

Iv.  Sillib. 

A.  Merian, 

N.  J.  B.  B.,  Ill,  p.  302, 
1885. 

Ilypersthene- 

andesite. 

SUBRANG  3.  PRESODIC.  BANDOSE. 


Zr02 

0.09 

Q 

21.3 

di 

4. 5 

Cr2d3 

none 

or 

6.1 

hy 

10.0 

v»o3 

0.02 

ab 

17.8 

mt 

4.2 

NiO 

trace 

an 

31.4 

il 

2.8 

SrO 

trace 

ZrO» 

0.14 

Q 

10.6 

di 

4.8 

Cr203 

0. 05 

or 

7.8 

hy 

24.8 

ab 

18.3 

mt 

2.3 

an 

27.8 

il 

1.4 

Cr203 

0.04 

Q 

9.7 

di 

6.0 

Li20 

trace 

or 

7.8 

hy 

23.1 

ab 

18.9 

mt 

1  6 

an 

28.6 

il 

2.0 

Zr02 

0.02 

Q 

13.5 

di 

4.6 

FeS2 

0.03 

or 

6.7 

hy 

16. 2 

Cr..03 

trace 

ab 

15.2 

mt 

3.7 

v2o3 

o  ol 

an 

36.4 

il 

1.2 

NiO 

0. 01 

SrO 

trace 

Q 

10.0 

di 

5.3 

or 

none 

hy 

20.8 

ab 

26.2 

mt 

3.7 

an 

26.1 

Q 

9.7 

hy 

17.9 

or 

2.8 

mt 

8.6 

ab 

24.6 

an 

35.6 

Stone  Run,  Cecil 
County,  Maryland. 


Georgetown,  District 
of  Columbia. 


Triadelphia,  Mont¬ 
gomery  County, 
Maryland. 

Octoraro  Creek,  Cecil 
County,  Maryland. 


Ely,  Minnesota. 


Granite  Falls,  Yellow 
Medicine  County, 
Minnesota. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


C.  F.  Sidener. 


Id.  N.  Stokes. 


A.  G.  Leonard, 

E.  U.  S.  G.  S.,  168, 
p.  45,  1900. 


G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  673,  1895. 

G.  Id.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  673,  1895. 

A.  G.  Leonard, 

B.  U.  S.  G.  S.,  168, 
p.  45,  1900. 


|  N.  H.  Winchell, 

23  A.  R.  G.  Nh.  S., 
Minn.,  p.  204,  1895. 

W.  S.  Baylev, 

B.  U.  S.  G.  S.,  150, 
p.  286,  1898. 


Quartz-diorite. 


Biotite-diorite. 


Biotite-diorite. 


Quartz-diorite. 


Felsite. 


Sum  low. 
Not  fresh. 


Gabbro. 


248 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE— Continued. 
RANG  4.  DOCALCIC.  BANDASE— Continued. 


No. 

Si02 

A1.A 

FeA 

FeO 

MgO 

CaO 

Na2G 

Iv20 

H20+ 

h2o- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

7 

56.  74 

18.  80 

0. 15 

6.91 

5.57 

7.34 

2.32 

0.  77 

1.09 

0.  20 

0.  07 

99.  96 

2.  876 

A3.  Ill 

.946 

.184 

.001 

.096 

.139 

.131 

.037 

« 

.008 

.001 

.001 

27° 

8 

61.58 

15.  89 

2. 19 

5.  50 

2.69 

6.  49 

3.  04 

0.51 

1.26 

0.  16 

none 

0.  63 

0.  12 

0. 20 

0.  06 

100.  38 

Al.  I 

1. 026 

.  156 

.014 

.  076 

.067 

.116 

.049 

.006 

.008 

.001 

.003 

— 

9 

56.  51 

18. 10 

4.  26 

2.  68 

4.52 

8.  15 

3.23 

1. 15 

0.  69 

0.  48 

0.  14 

0. 11 

0.04 

100. 10 

Al.  I 

.942 

.  177 

.027 

.038 

.113 

.145 

.  051 

.013 

.006 

.001 

.002 

— 

10 

57.04 

19.  11 

4.37 

2.  48 

3.94 

7.34 

3.  48 

1.  16 

1.09 

0. 47 

0.  08 

0. 12 

. 

trace? 

100.  70 

Al.  I 

.951 

.187 

.027. 

.035 

.099 

.131 

.  056 

.  013 

.006 

.001 

.002 

— 

11 

53. 19 

17. 12 

4.  35 

5. 16 

3.98 

9.39 

2.  79 

0.  28 

1.21 

0. 17 

1.34 

0. 13 

trace 

trace 

100. 05 

Al.  I 

.887 

.168 

.027 

.072 

.100 

.168 

.045 

.003 

.016 

.001 

— 

12 

60.  96 

18.06 

1.42 

2.  48 

5.  09 

6.  67 

2.  39 

0.  28 

1.26 

0.  04 

1. 10 

0.  25 

0.34 

100.  34 

2.  856 

A2.  II 

1.016 

.177 

.009 

.035 

.127 

.120 

.039 

.003 

.014 

.002 

.005 

13 

60.  35 

18.  71 

2. 10 

2. 15 

4.08 

7.  18 

1.54 

0.  32 

1.50 

0.08 

0.  70 

0.  29 

0.  66 

99.  67 

A2.  II 

1.006 

.183 

.013 

.030 

.102 

.128 

.025 

.003 

.009 

.002 

.009 

14 

52.  02 

17. 14 

7.96 

3.52 

3. 13 

11.  57 

2.  38 

0.  60 

0.  28 

trace 

trace 

99.45 

2.  76 

A3.  Ill 

.867 

.168 

.050 

.049 

.078 

.207 

.039 

.006 

— 

— 

16° 

15 

59.  25 

16.  75 

4.  00 

4.  82 

3.81 

6.  88 

2.  56 

1.92 

n.  d. 

trace 

• 

99.99 

A3.  Ill 

.988 

.164 

.025 

.  067 

.095 

.123 

.041 

.020 

16 

58.  30 

16. 14 

4.  76 

4.50 

2.  68 

10.  96 

1.  74 

0.  94 

n.  d. 

100.  02 

2.  842 

A3.  Ill 

.972 

.158 

.030 

*062 

.  067 

.196 

.028 

.010 

17 

60.  50 

20.  40 

1.49 

2.  93 

2.91 

6.  20 

3.48 

1.32 

0.50 

99.  77 

A3.  Ill 

1.00s 

.200 

.009 

.040 

.073 

.  no 

.050 

.013 

18 

62.21 

15.60 

5.  26 

1.  36 

2.61 

6.  55 

2.50 

1.63 

2.  25 

99.  97 

A3.  Ill 

1.035 

.153 

.033 

.019 

.  065 

.117 

.040 

.017 

19 

56.  31 

20.  83 

4. 13 

1.87 

4.91 

7.  54 

1.  85 

1.07 

1.23 

99.  74 

A3.  Ill 

.939 

.204 

.025 

.026 

.123 

.134 

.030 

.012 

20 

54.  39 

17.  85 

6.  53 

4.  71 

3.  98 

6.  37 

2.  99 

1.05 

2.  59 

100. 46 

A3.  Ill 

.907 

.  175 

.041 

.  065 

.100 

.114 

.048 

.011 

21 

53.  14 

17.  82 

8.  69 

1.98 

4.  58 

7.26 

1.51 

1.18 

3.  26 

99.  42 

A3.  Ill 

.886 

.174 

.054 

.028 

.115 

.129 

.024 

.013 

(99.52) 

22 

62.  42 

17.  15 

1.02 

5.91 

2. 14 

6.39 

2.09 

1.21 

0.  53 

1.45 

0.  29 

100.  60 

A3.  Ill 

1.040 

.168 

.006 

.082 

.054 

.  114 

.034 

.013 

.010 

.004 

23 

56.  38 

17.  48 

5.30 

2.  72 

3. 10 

10.  89 

1.77 

1.38 

0.  52 

0.33 

99.  87 

2.  468 

A3.  Ill 

.935 

.171 

.033 

.038 

.077 

.194 

.029 

.015 

.004 

24 

55.  83 

18.  96 

5.  64 

3.  23 

2.  76 

7.40 

3. 12 

1. 17 

1.20 

0.  32 

99.  63 

2.  647 

A3.  Ill 

.931 

.186 

.035 

.045 

.068 

.132 

.050 

.013 

.004 

DOSALANE - BANDOSE. 


249 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 
SUBRANG  3.  PRESODIC.  BANDOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  10  8 
or  4.4 
ab  19.4 
an  36. 4 

C  0.8 

hv 

mt 

26  5 
0.2 

Mount  Morrison, 
Denver  Colorado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  159,  1897. 

Enstatite- 

diabase- 

porpbyry. 

FeS» 

NiO' 

SrO 

Li20 

0.06 

trace? 

trace? 

trace 

Q  21.5 
or  3. 3 
ab  25.7 
an  28. 1 

di 

hy 

mt 

il 

3.5 

12.2 

3.2 

1.2 

Karluk,  Kadiak  Is¬ 
land,  Alaska. 

W.  F.  Hille- 
brand. 

G.  F.  Becker, 

18  A.  R.  U.  S.  G.  S., 
Ill,  p.  42,  1898. 

Diorite. 

Cr203 

SrO 

Li,0 

trace? 

0.04 

trace 

Q  10.9 
or  7.2 
ab  26. 7 
an  31.4 

di 

hy 

mt 

il 

7.  1 

8.  i; 
6.3 
0.9 

Lassen  Peak, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S. ,  79, 
p.  29,  1891. 

Quartz-basalt. 

Dried  at  105°. 

SrO 

Li,,0 

0.02 

trace 

Q  11.2 
or  7.2 
ab  29.  3 
an  32.  8 

di 

hy 

mt 

il 

2.9 

8.8 

6.3 

0.9 

Suppan’s  Mountain, 
Tehama  County, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  196,  1897. 

ypersthene- 

andesite. 

Dried  at  110°. 
Secretion  in  No. 
49,  tonalose. 

FeS» 

Cr203 

0. 94 
none 

Q  10A 
or  1. 7 
ab  23.6 
an  33.4 

di 

hy 

mt 

il 

pr 

10.6 

9.5 
6.3 

2.5 
0.9 

Grass  Valley,  Nevada 
County,  California. 

H.  N.  Stokes. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  71,  1896. 

Diabase. 

S 

trace 

Q  23.1 
or  1. 7 
ab  20. 4 
an  33.4 

C  1.5 

hy 

mt 

il 

14.3 

2.1 

2.2 

Smith’s  Post  Island, 
Essequibo  River, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Esseq.  Riv., 
1900,  p.  43. 

Diorite. 

Dried  at  110°. 
“Altered.” 

s 

trace 

Q  28.3 
or  1. 7 
ab  13. 1 
an  35.  6 

C  2.8 

hy 

mt 

il 

11.3 

3.0 

1.4 

Smith’s  Post  Island, 
Essequibo  River, 
British  Guiana. 

J.  B.  Flarrison. 

J.  B.  Harrison, 

Rep.  G.  Esseq.  Riv  , 
1900,  p.  43. 

Diorite. 

Dried  at  110°. 

so3 

Cl 

trace 

trace 

Q  11.3 
or  3.3 
ab  20.4 
an  34.2 

di  16.9 
wo  0. 8 
mt  11.5 

Portaiiuela,  Yate 
Volcano,  Pata¬ 
gonia. 

H.  Ziegen  speck. 

H.  Ziegenspeck, 

In.  Diss.,  Jena, 

1883,  p.  29. 

Basalt  ? 

Sum  low. 

Q  15.5 
or  11.1 
ab  21.5 
an  28. 6 

di 

hy 

mt 

4.5 

12.8 

5.8 

Great  Ayton,  Eng¬ 
land. 

J.  E.  Stead. 

J.  J.  H.  Teall, 

Q.  J.  G.  S.,  XL, 
p.  224,  1884. 

Andesite. 

Near  tonalose, 
cf.  No.  83. 
Calc,  to  100%? 

Q  19.9 
or  5. 6 
ab  14. 6 
an  33. 4 

di 

hy 

mt 

17.3 

2.5 

7.0 

Castle  Rock,  Tyne¬ 
mouth,  England. 

J.  E.  Stead. 

J.  J.  H.  Teall, 

Q.  J.  G.  S. ,  XL, 
p.  235,  1884. 

Andesite. 

Calc,  to  100%? 

Q  18.4 
or  7. 2 
ab  26. 2 
an  30.  6 
C  2.8 

hy 

mt 

11.3 

2.1 

Vallee  de  Barboull- 
iere,  Pyrenees 
Mountains,  France. 

A.  Pisani. 

A  Lacroix, 

B.  S.  C.  G.  Fr., 

XI,  No.  71,  P-31, 1900. 

Hornblende- 

granite. 

Q  24.9 
or  9. 5 
ab  21. 0 
an  26. 7 

di 

hy 

mt 

hm 

4. 5 
4.4 
4.4 
2.2 

San  Pedro,  Cabo  de 
Gata,  Almeria, 
Spain. 

Kottenhain. 

A.  Osann, 

Z.  D.  G.  G.,  XLIII, 
p.  702,  1891. 

Hvpersthen''- 

dacite. 

Near  tonalose. 

Q  17.7 
or  6.7 
ab  15.  7 
an  37.3 
C  2.9 

hy 

mt 

12.4 

5.8 

Arnsdorf,  Riesenge- 
birge,  Silesia. 

Herz. 

L.  Milch, 

N.  J.  B.  B.,  XII, 
p.  213,  1899. 

Lamprophyr 

Q  12.1 
or  6. 1 
ab  25. 2 
an  31.  7 
C  0.2 

hy  13.1 
mt  9.5 

Lupsa  Valley,  Per- 
sanyer  Mountains, 
Hungary. 

Herbich. 

J.  Budai, 

F.  K.,  XVI,  p.  267, 
1886. 

Diabase. 

Q  17.5 
or  7.2 
ab  12.6 
an  35. 9 
C  0.8 

hy  11.  5 
mt  6. 5 
hm  4.2 

Szekelyko,  Sieben- 
burgen,  Hungary. 

J.  v.  Szacleczky. 

J.  v.  Szadeczky, 

F.  K.,  XXli,  p.  324, 
1892. 

Labradorite- 

porphyry. 

Q  24.0 
or  7.2 
ab  17. 8 
an  31. 7 
C  0.7 

hy 

mt 

15.4 

1.4 

Lava  of  1888.  Vul- 
cano,  jEolian 
Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min.,  Ill, 
p.  110,  1892. 

Andesite. 

Q  16.1 
or  8. 3 
ab  15.2 
an  35.3 

di 

hy 

mt 

14.7 

1.5 

7.7 

Kaimeni,  Methana, 
Greece. 

A.  Rohrig. 

11.  S.  Washington, 

J.  G.,  Ill,  p.  150, 

1895. 

Hornblende- 

andesite. 

Segregation  in 
No.  114,  ton¬ 
alose. 

Cl 

trace 

Q  13.5 
or  7. 2 
ab  26.2 
an  34. 2 

di 

hv 

mt 

il 

2.3 
6. 8 
8.1 
0.6 

Ivosona,  Methana, 
Greece. 

A.  Rohrig. 

II.  S.  Washington, 

.  J.  G.,  Ill,  p.  150, 1895. 

Hornblende- 

andesite. 

Segregation  in 
No.  55,  yel- 
lowstonose. 

250 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOS ALANE— Continued. 


RANG  4.  DOCALCIC.  BANDASE— Continued. 


No. 

Si02 

A1203 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

O 

o 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

25 

55.  87 

22.40 

2.  52 

1.80 

2. 99 

9.20 

1.80 

0.  39 

2.  66 

0.  16 

99.  79 

2.  268 

A3.  Ill 

.932 

.219 

.016 

.025 

.074 

.164 

.029 

.004 

.002 

26 

59.66 

15.51 

3.  76 

5.40 

3.  67 

6.  56 

2.50 

1.08 

n.d. 

0. 18 

1.40 

100.31 

A3.  Ill 

.994 

.152 

.024 

.075 

.092 

.117 

.040 

.011 

.001 

.020 

27 

59.  47 

17. 12 

2.  33 

5.69 

4.  04 

7.24 

2.23 

0.  30 

1.35 

99.77 

A3.  Ill 

.991 

.168 

.014 

.079 

.101 

.128 

.035 

.003 

28 

57.  47 

19.  20 

3.  83 

3.  22 

0.  49 

9.35 

2.  47 

1.36 

0.  39 

0. 12 

trace 

0.  97 

99. 10 

2.  738 

B3.  IV 

.958 

.188 

.024 

.044 

.012 

.167 

.040 

.015 

.014 

21° 

CLASS  II.  DOSALANE. 

RANG  1.  PERALKALIC.  UMPTEKASE. 


1 

58.04 

17.24 

2.  49 

1.24 

1.79 

3.50 

3.  37 

10.  06 

1.95 

0.  30 

0.  22 

trace 

100. 58 
.09 

A2.  II 

.967 

.169 

.015 

.017 

.045 

.062 

.  055 

.107 

.004 

.002 

— 

100. 49 

2 

61.28 

14.  71 

1.21 

2.  85 

1.69 

5.61 

2.99 

7.  70 

0.  43 

0.  28 

0.  41 

0. 16 

trace 

0.  72 

100. 16 

Al.  I 

1.021 

.144 

.007 

.040 

.042 

.100 

.048 

.082 

.005 

.001 

— 

.005 

3 

55.49 

14.57 

8.68 

0.  66 

3.  61 

0.  68 

1.86 

7.  87 

3.  96 

1.  78 

0.  27 

99.43 

2.839 

B2.  Ill 

.925 

.143 

.054 

.009 

.090 

.012 

.030 

.084 

.022 

.002 

RANG  1.  PERALKALIC.  UMPTEKASE. 


1 

62.  99 

14.  25 

2.  78 

5. 15 

1.30 

2.  72 

4.  86 

6. 35 

0. 18 

0. 16 

0.  18 

100.  92 

2.  732 

B2.  III. 

1. 050 

.140 

.017 

.072 

.033 

.049 

0.78 

.068 

.002 

.003 

2 

57.  49 

16.  54 

4.  85 

0.  63 

4.  73 

1.07 

3.  79 

7.23 

3.  08 

0.  94 

0.  43 

100.  89 

2.618 

B2.  III. 

.958 

.162 

.030 

.009 

.118 

.019 

.061 

.077 

.012 

.003 

3 

56.  99 

15.65 

3.  56 

1.99 

4.  43 

3.  75 

4.41 

6.50 

2.  22 

0.83 

0.  41 

100.  84 

2.  681 

B2.  III. 

.950 

.153 

.022 

.028 

.in 

.067 

.071 

.069 

.010 

.003 

4 

57.  33 

14.  06 

2. 07 

3.  59 

3.  55 

5.  68 

3.34 

6.  32 

3.  08 

1.05 

0.  09 

100. 16 

A2.  II. 

.956 

.138 

.013' 

.050 

.089 

.102 

.054 

.067 

.013 

.001 

5 

64.  46 

14.  96 

0.  95 

3.  73 

1.36 

3.  30 

4.  39 

5.  44 

1.07 

trace 

none 

trace 

99.66 

A3.  III. 

1.074 

.147 

.006 

0.52 

0.34 

.059 

.071 

.058 

— 

— 

— 

6 

55.26 

16.  36 

5.  26 

2.  90 

1.14 

3.90 

4.08 

8.  82 

1.20 

0.  36 

99.  28 

B3.  IV. 

.921 

.160 

.033 

.040 

.029 

.054 

.066 

.093 

.005 

7 

57.91 

15.  79 

6.81 

0.01 

1.66 

2.  99 

6.01 

7.27 

0.  34 

0.  65 

0.  01 

0.  23 

100.  29 

2.  516 

A2.  II. 

.965 

.154 

.042 

.042 

.053 

.097 

.078 

.008 

— 

.003 

1 

DOSALANE— 1LMENOSE. 


251 


ORDER  4.  QUARDOFELIC.  AUSTRARE— Continued. 


SUBRANG  3.  PRESODIC.  BANDOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  19.4 
or  2. 2 
ab  15.  2 
an  45.6 
C  2.2 

hv  8. 7 
mt  3.7 

Kakoperato,  Aegina, 
Greece. 

A.  Roll  rig. 

II.  S.  Washington, 

J.  G.,  Ill,  p.  150, 1895. 

Hornblende- 

andesite. 

Segregation  in 
No.  19,  da- 
cose. 

Nearly  in  persa- 
lane. 

S  0.59 

Q  19.6 
or  6. 1 
ab  21.0 
an  28. 1 

di  3. 7 
hy  14.2 
mt  5.6 

Obandai.  Bandai  San, 
Japan. 

Shimidzu. 

T.  Wada, 

Mt.  D.  Ges.  Ostas.,  V, 
p.  74,  1889. 

Augite-andesite. 

MnO  high? 

Aik.  corr.,  cf. 
N.  J.,  1890,  II, 

p.  102. 

Q  20.5 
or  1.7 
ab  18.3 
an  35. 6 

C  0.2 

hy  18.7 
mt  3.2 

Bandai  San,  Japan. 

Nishiyama. 

Nishiyama, 
cf.  N.  J.,  1890,  II, 

p.  102. 

Andesite. 

S03  0. 23 

Q  17.5 
or  8. 3 
ab  21.0 
an  37. 0 

di  7.8 
mt  5. 6 

Volcano,  New  Britain, 
Pacific  Ocean. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 
XVI,  p.  50,  1883. 

Lava. 

Sum  low. 

ORDER  5.  PERFELIC.  GERMANARE. 


SUBRANG  2.  DOPOTASSIC.  HIGHWOODOSE. 


S03  trace 

or  59. 5  di  9. 7 

Highwood  Gap, 

E.  B.  Hurlbut. 

L.  V.  Pirsson, 

Trachyte. 

Cl  0. 38 

ab  14.  7  mt  2. 6 
an  3. 3  il  0. 6 

Highwood  Moun- 

B.  U.  S.  G.  S.,  148, 

ne  2.0  hm  0.6 

tains,  Montana. 

p.  152,  1897. 

so  4. 9  ap  0. 4 

S03  0. 08 

Q  3.4  di  16.0 

Turnback  Creek, 

H.  N.  Stokes. 

H.  W.  Turner, 

Augite-svenite. 

SrO  0. 04 

or  45.6  wo  1.9 

Tuolumne  County, 

B.  TJ.  S.  Gr.  S.,  148, 

an  3. 9  il  0. 8 

California. 

p.  217,  1897. 

Q  7. 6  hy  9. 0 

Winterbach, 

Fischer. 

K.  A.  Lossen, 

Augite-syenite- 

Iron  oxides  and 

or  46.7  il  1.5 
ab  15. 7  hm  8. 7 

n.  St.  Wendel, 

Jb.  Pr.  G.  L-A.,  X, 

porphyry. 

Ti02? 

an  3.3  ru  1.0 

Harz  Mountains. 

p.  266,  1892. 

C  1.7 

SUBRANG  3.  SODIPOTASSIO.  ILMENOSE. 


S03  0.11 


S03  0.10 


Cl  0.61 


Q 

2.6 

ac 

2.8 

or 

37.8 

di 

11.5 

ab 

37. 7 

hy 

5.5 

mt 

2.6 

or 

42.8 

hy 

6.6 

ab 

32.0 

ol 

3.7 

an 

5.3 

il 

1.6 

C 

0.5 

hm 

4.9 

or 

38.4 

di 

9.6 

ab 

32.5 

ol 

4.7 

an 

3.6 

mt 

4.2 

ne 

2.6 

il 

1.5 

hm 

0.6 

ap 

1.0 

or 

37.3 

di 

19.1 

ab 

28.3 

hv 

3.0 

an 

4.7 

mt 

3.0 

il 

2.0 

Q 

8.6 

di 

9.5 

or 

32.2 

hv 

4.7 

ab 

37.2 

mt 

1.4 

an 

5.0 

or 

51.7 

di 

8.0 

ab 

19.9 

WO 

2.0 

an 

0.3 

mt 

7. 7 

ne 

0.8 

Q 

0.7 

ac 

6.0 

or 

43.4 

di 

9.1 

ab 

26. 2 

WO 

1.3 

so 

8.2 

hm 

3.4 

Beverley, 

Essex  County, 
Massachusetts. 

Gotteskopf, 
n.  Ilmenau, 
Thuringia. 

Gotteskopf, 
n.  Ilmenau, 
Thuringia. 


Gailbach,  Spessart, 
Bavaria. 


Hengstberg, 
n.  Grimma, 
Saxony. 


Madonna  di  Lauro, 
Vetralla,  Viterbo, 
Italy. 

Mte.  Santo,  Naples, 
Italy. 


F.  E.  Wright. 

F.  E.  Wright, 

T.  M.  P.  M.,  XIX, 
p.  318,  1900. 

Umptekite. 

Fischer. 

H.  Loretz, 

Jb.  Pr.  G.  L-A.,  XIII, 
p.  135,  1893. 

Porphyrite. 

Fischer. 

IL.  Loretz, 

Jb.  Pr.  G.  L-A.,  XIII, 
p.  135,  1893. 

Porphyrite. 

E.  Goller. 

E.  Goller, 

N.  J.  B.  B.,  VI, 
p.  566,  1889. 

Kersantite. 

P.  Jannasch. 

II.  Rosenbusch, 
Elemente, 
p.  269,  1898. 

Pyroxene- 

quartz- 

porphyry. 

A.  Rohrig. 

H.  S.  Washington, 

J.  G.,  IV, 
p.  849,  1896. 

Leucite- 

trachvte. 

H.  J.  Johnston- 
Lavis. 

II.  J.  Johnston -Lavis, 
Genl.  Mag.  Dec.  Ill, 
VI,  p.  77,  1889. 

Trachyte. 

Iron  oxides? 


Near  monzo- 
nose. 


Sum  low. 


Also  in  B.  C.  G., 
Ital.,  XX,  p. 
136, 1889. 

Iron  oxides? 


252 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 

RANG  3.  PERALKALIC.  UMPTEKASE— Continued. 


No. 

SiO, 

A1203 

Fe-A 

FeO 

MgO 

CaO 

Na20 

k2o 

H.,CH 

H20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

59.01 

18. 18 

1.63 

3.  65 

1.  05 

2.  40 

7.  03 

5.34 

0.  50 

0.15 

0.  81 

trace 

0.  03 

0.08 

99.  98 

Al.  I. 

.984 

.178 

.010 

0. 51 

.  026 

.043 

.113 

.  057 

.010 

— 

.001 

2 

64.  28 

15.97 

2.91 

3.  18 

0.  03 

0.  85 

7.  28 

5.  07 

0.  20 

0.50 

0.  08 

trace 

none 

100.  33 

2.  703 

A2.  II. 

1.071 

.156 

.018 

.044 

.001 

.015 

.117 

.054 

* 

.006 

.001 

— 

22° 

3 

59.  66 

16.97 

3. 18 

1.  15 

0.  80 

2.  32 

8.  38 

4.17 

2.  53 

0.  07 

trace 

0.14 

0. 19 

99.  56 

A2.  II. 

.994 

.166 

.034 

.016 

.020 

.042 

.135 

.044 

— 

.001 

.003 

4 

63.  69 

15.  03 

2. 51 

2.  41 

0.  80 

3.30 

6.  54 

2.  46 

2.  23 

trace 

0.  55 

99.  52 

2.55 

A3.  III. 

1.062 

.147 

.015 

.033 

.020 

.059 

.105 

.026 

— 

.008 

15° 

5 

58.  81 

18.  54 

5.00 

1.80 

1.02 

3.  81 

7.  90 

3.  06 

n.  d. 

99.  94 

A3.  Ill 

.980 

.182 

.031 

.025 

.026 

.068 

.127 

.033 

6 

62.  70 

16.  40 

3.  34 

2.  35 

0.  79 

0.  95 

7. 13 

5.  25 

0.  70 

0.  92 

trace 

100.  53 

A2.  II 

1. 045 

.161 

.021 

.033 

.020 

.017 

.115 

.056 

.011 

— 

7 

60.  50 

16.  86 

1.67 

2.  54 

1.11 

2.  95 

6.  46 

5.42 

1.40 

0.  70 

0.  75 

0.  21 

0.  20 

100.  77 

A2.  II 

1.008 

.  165 

.010 

.035 

.028 

.053 

.104 

.058 

.009 

.002 

.003 

8 

58.  90 

17.  70 

3.94 

2.37 

0.  54 

1.05 

7.  39 

5.59. 

1.90 

0. 40 

trace 

0.  55 

100.  33 

A 2.  II 

.982 

.173 

.  025 

.033 

.014 

.019 

.119 

.060 

.005 

— 

.008 

9 

57.  52 

18.  46 

2.  23 

2.  44 

1.08 

2. 12 

7.  58 

4.  08 

1.80 

0.  92 

0.  21 

99.  64 

A2.  II 

.959 

.181 

.014 

.034 

.027 

.038 

.122 

.043 

.011 

.002 

10 

57.00 

18.  03 

1.33 

3.  52 

1.53 

3.  55 

7.  53 

3.  89 

1.30 

1.05 

0.  55 

0.  41 

0.  49 

ICO.  18 

A2.  II 

.950 

.177 

.008 

.049 

.038 

.063 

.121 

.041 

.007 

.003 

.007 

11 

63.  71 

16.  59 

2.  92 

0.  66 

0.90 

3.  11 

8.  26 

2.  79 

0. 19 

0.  86 

0.  20 

100. 19 

A2.  II 

1.062 

.163 

.018 

.009 

.023 

.  056 

.135 

.030 

.011 

.003 

12 

57.  78 

15.  45 

3.  06 

3.11 

1.13 

1.72 

11.03 

2.  89 

0.  94 

1.  83 

0. 98 

99.  92 

• 

A2.  II 

.963 

.151 

.019 

.043 

.028 

.031 

.178 

.031 

.022 

.013 

13 

60.  89 

17. 16 

3.  60 

3. 18 

0.  49 

3.  07 

6.  88 

4.  23 

0.  37 

99.87 

A3.  Ill 

1.015 

.168 

.022 

.044 

.012 

.  055 

.ill 

.045 

■ 

14 

61.01 

16.  62 

3.  55 

2.81 

0.  06 

3.  27 

5.92 

5.  22 

1.  13 

trace 

0.  55 

100. 14 

A3.  Ill 

1.017 

.163 

.022 

* 

.039 

.002 

.058 

.095 

.056 

.008 

DOSALANE - UMPTEKOSE. 


253 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  UMPTEKOSE. 


Inclusive. 

vr 

Norm. 

Locality. 

1 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ZrOo 

Cl 

SrO 

LUO 

trace 

0. 12 

trace 

trace 

or  31.7 
ab  41. 9 
an  2.2 
ne  9.9 

di  8.2 
ol  1.9 
mt  2. 3 
il  1.5 

Red  Hill,  New 
Hampshire. 

W.  F.  Hi  Re¬ 
brand. 

W.  S.  Bavley, 

B.  G.  S.  A.,  Ill, 
p.  250,  1892. 

Nephelite-sve- 

nite. 

Near  laurdalose. 

Q  2.0 
or  30.0 
ab  53.4 

ac  6. 9 
di  3.7 
hy  2.8 
mt  0.7 
il  0.9 

Andrews  Point,  Cape 
Ann,  Essex  County, 
Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S„  VI, 
p.  178,  1898. 

Glaucophane- 

solvsbergite. 

Dried  at  110°. 

or  24.5 
ab  48.7 
ne  8. 2 

ac  6.0 
di  4. 3 
wo  2.5 
mt  3.7 
hm  0.8 

Peaked  Butte,  Crazy 
Mountains,  Mon¬ 
tana. 

W.  H.  Melville. 

Wolff  and  Tarr, 

B.  M.  C.  Z.,  XVI, 
p.  232,  1893. 

Nephelite- 

syenite. 

so3 

Cl 

Cu 

trace 

trace 

trace 

Q  9.8 
or  14.5 
ab  55. 0 
an  4. 4 

di  9.4 
mt  3. 5 

Yate  Volcano,  Pata¬ 
gonia. 

H.  Ziegenspeck. 

FI.  Ziegenspeck, 

In.  Diss.,  Jena, 
p.  42,  1883. 

Augite-andesite. 

Near  pantelle- 
rose  and  kal- 
lerudose. 

or  18.3 
ab  54.0 
an  6. 1 
ne  6. 8 

di  5.6 
wo  2. 3 
mt  5. 8 
hm  1.0 

Ostvaago,  Lofoten 
Islands,  Norway. 

T.  Matthiesen. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 
1898,  No.  7,  p.  23. 

Labradorite- 

rock. 

Near  akerose. 

or  31.1 
ab  55.0 

ac  4. 6 
di  3.9 
ol  1.1 
mt  2.6 
il  1.7 

Laugendal,  Norway. 

L.  Sehmelck. 

W,  C.  Brogger, 

Eg.  Kg.  I,  p.  80, 1894. 

Hornblende- 

solvsbergite. 

or  32.2 
ab  46. 1 
an  0. 8 
ne  4.5 

di  10.1 
wo  0.6 
mt  2. 3 
il  1.4 

Osto,  Christiania 
Fjord,  Norway. 

V.  Sehmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill,  p.  190, 
1899.  “ 

Hedrumite. 

or  33.4 
ab  43. 0 
ne  8. 8 

ac  2. 8 
di  4.7 
ol  1.0 
mt  4. 4 
il  0.8 

Kjose  Aklungen, 
Norway. 

V.  Sehmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  I,  p.  102,1894. 

Aegirite-mica- 

solvsbergite. 

or  23.9 
ab  50.3 
an  4. 4 
ne  7.4 

di  5.1 
ol  2.1 
mt  3.2 
il  1.7 

Skirstad  Lake,  Gran, 
Norway. 

L.  Sehmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  I,  p.181,1894. 

Foyaite. 

“Hedrumite” 
in  Eg.  Kg.  Ill, 
p.  190,  1899. 

or  22.8 
ab  45. 1 
an  4. 2 
ne  9.9 

di  8. 4 
ol  3.0 
mt  1. 9 
il  1.1 
ap  1. 1 

Brathagen, 

Laugendal, 

Norway. 

TT.  Sehmelck. 

W.  C.  Brogger, 

Eg.  Kg.  Ill,  p.  116, 
1899. 

Heumite. 

Near  laurdalose. 
Border  of  dike 
cf.  No.  12,  es- 
sexose. 

or  16.7 
ab  69. 2 
ne  0. 3 

ac.  0. 9 
di  5.0 
wo  3.9 
il  1. 7 
hm  2. 6 

Umpjarvi,  Ivola,  Fin¬ 
land. 

W.  Petersson. 

W.  Ramsay, 

Fennia,  XI,  p.  205, 
1894. 

Umptekite. 

• 

or  17.2 
ab  52. 4 
ne  5. 7 

ac  8.8 
ns  4. 7 
ol  4.0 
il  3.4 

Tuoljlucht,  ITmptek, 
Kola,  Finland. 

H.  Bergholl, 

V.  Hackman, 

Fennia,  XI,  No.  2,  p. 
139,  1894. 

Nephelite- 

svenite 

(Lujavrite). 

or  25.0 
ab  55. 5 
am  3. 3 
ne  1. 4 

di  8.1 
wo  1.0 
mt  5.1 

Steinburg,  Wester- 
wald,  Prussia. 

W.  Bruhns. 

W.  Bruhns, 

Vh.  Nh.  Ver.  Bonn., 
LIII,  p.  51,  1896. 

Trachyte. 

Cl 

trace 

Q  1.3 
or  31.1 
ab  49. 8 
an  3. 3 

di  4.7 
wo  3. 1 
mt  5. 1 

Cape  Adare,  Antarctic 
Continent. 

J.  A.  Schofield. 

David,  Smeeth,  and 
Schofield, 

V.  R.  Soc.  N.  S.  W., 
XXIX.,  p.  473, 1895. 

Trachyte. 

Near  ilmenose. 

254 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 


RANG  2.  DOMALKALIC.  MONZONASE. 


No. 

SiO, 

ai203 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

51.  05 

14.  49 

4. 16 

4. 37 

8. 16 

5.11 

1.85 

7. 25 

1.05 

1.76 

0.  70 

99.  94 

A2.  II 

.851 

.142 

.026 

.061 

.204 

.091 

.030 

.077 

.022 

.005 

2 

56.  39 

12.  88 

2.  36 

3.  54., 

7.83 

4.  06 

1.30 

7.  84 

1.33 

2.  07 

trace 

99.  60 

A3.  Ill 

.940 

.126 

.015 

.049 

.196 

.072 

.021 

.083 

.026 

— 

3 

55.  85 

19.  31 

3.  77 

1.88 

1.73 

3.  84 

3.  39 

8.  77 

1.14 

trace 

99.  68 

2.648 

A3.  Ill 

.931 

.189 

.024 

.026 

.043 

.068 

.055 

.094 

— 

4 

57.31 

14.  71 

1.21 

4.  37 

7.  80 

6.90 

1.35 

6.  38 

0.18 

0.  40 

trace 

none 

100.  61 

A2.  II 

.955 

.144 

.008 

.061 

.195 

.123 

.022 

.068 

.005 

— 

— 

5 

55.  46 

15.  36 

1.34 

4.  50 

7.90 

6.  69 

1.  79 

6.  63 

0.  23 

0. 15 

trace 

100.  21 

2.  700 

A3.  Ill 

.924 

.151 

.008 

.062 

.198 

.119 

.029 

.071 

— 

6 

55.  21 

19.  81 

2.  69 

2.86 

1.68 

4.  61 

3. 13 

8.  45 

0.  99 

trace 

99.  43 

2.  609 

A3.  Ill 

.920 

.194 

.016 

.040 

.042 

.082 

.050 

.090 

— 

10° 

RANG  2.  DOMALKALIC.  MONZONASE. 


1 

57.97 

17.28 

2.  23 

3.  75 

2.  20 

4.  33 

4.  31 

4.  12 

0.  57 

0.18 

0. 05 

1.54 

0.  64 

0. 15 

0.  07 

99.  75 

Al.  I 

.966 

.169 

.014 

.052 

.  055 

.077 

.071 

.044 

.018 

.004 

.002 

.001 

2 

60.  56 

16. 19 

5. 19 

2.41 

1.30 

2.  09 

4.  78 

4.  82 

0.51 

1. 19 

0.  30 

0.36 

99.  70 

2.  633 

A2.  II 

1.009 

.159 

.032 

.033 

.033 

.037 

.077 

.051 

.015 

.002 

.005 

3 

61.  65 

15.07 

2.  03 

2.25 

3.  67 

4.61 

4.  35 

4.  50 

0.  41 

0.  26 

0.  56 

0.  33 

0.  09 

0.  27 

100. 15 

Al.  I 

1.028 

.148 

.013 

.031 

.092 

.083 

.070 

.048 

.007 

.002 

.001 

.002 

4 

54.  42 

14.  28 

3.  32 

4. 13 

6.12 

7.  72 

3.44 

4.  22 

0.  38 

0.  22 

0.  80 

0.  59 

0. 10 

0.  32 

100. 19 

Al.  I 

.907 

.140 

.021 

.059 

.153 

.138 

.  055 

.045 

.010 

.004 

.001 

.002 

5 

52.  26 

13.  96 

2.  76 

4. 45 

8.21 

7.  06 

2.  80 

3.  87 

1.34 

1.53 

0.  49 

0. 58 

0. 52 

0. 14 

0.  23 

100.  25 

Al.  I 

.871 

.137 

.017 

.062 

.205 

.126 

.045 

.041 

.007 

.003 

.002 

.002 

6 

52.  81 

15.  66 

3.06 

4.  76 

4.  99 

7.  57 

3.  60. 

4.  84 

0.  93 

0.16 

0.  71 

0.  75 

trace 

0.  24 

100.  22 

Al.  I 

.880 

.152 

.019 

.066 

.125 

.135 

.058 

.051 

.009 

.005 

— - 

.002 

7 

Al.  I 

55.  23 

.921 

18.31 

.179 

4.  90 

.030 

2.  06 

.030 

1.85 

.046 

3.62 

.064 

4.02 

.064 

6.  43 

.068 

1.84 

none 

0.  42 

.005 

0. 58 

.004 

trace 

0.  46 

.003 

100.  27 
.08 

100. 19 

8 

51.  65 

13.  89 

2.  70 

4.  80 

11.56 

4.07 

2.  99 

4. 15 

1.89 

1.30 

0.  55 

0.21 

0. 15 

0.19 

100.  37 

Al.  I 

.861 

.136 

.017 

.067 

.289 

.073 

.048 

.044 

• 

.007 

.002 

.002 

.001 

9 

57.29 

18.  45 

4.  38 

1.20 

2.  08 

3.57 

4.  43 

5.43 

2.  01 

0.17 

0.  72 

0.  46 

trace 

100.  31 

A2.  II 

.  955 

.181 

.027 

.017 

.052 

.064 

.071 

.058 

.009 

.003 

— 

DOSALANE - MONZONOSE. 


255 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  2.  DOPOTASSIC.  CIMINOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  42. 8 
ab  11.5 
am  9.  7 
ne  2. 3 

di  9.3 
ol  12. 4 
mt  6.0 
il  3.2 
ap  1.7 

Durbach, 

Schwarzwald, 

Baden. 

Not  stated. 

A.  Sauer, 

Mt.  Bad.  G.  L-A.,  II, 
p.  25S,  1892. 

Durbachite. 

Q  1.0 
or  46. 1 
ab  11.0 
an  6.0 

di  11.1 
hy  15.6 
mt  3. 5 
il  4.0 

Monte  Catini, 
n.  Volterra,  Tus¬ 
cany. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  IX,  p.  47, 
1900. 

Mica-trachyte 

(selagite). 

or  52. 3 
ab  14.7 
an  11.1 
ne  7.7 

di  6.0 
ol  1.2 
mt  5. 6 

Bagnorea, 
n.  Orvieto,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G. ,  V,  p.  370, 

1897. 

Leucite-phono- 

lite. 

or  37.8 
ab  11. 5 
an  15.0 

di  15.3 
by  16.2 
ol  1.8 
mt  2.2 

LaColonetta,  Mte.  Ci- 
mino,  n.  Viterbo, 
Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  IX,  p.  44, 
1900. 

Ciminite. 

or  39.5 
ab  13.6 
an  14.2 
ne  0.9 

di  15.3 
ol  14. 2 
mt  1.9 

Fontana  Fiescoli, 

Mte.  Cimino,  n.  Vi¬ 
terbo,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  IX,  p.  44, 
1900. 

Ciminite. 

or  50.0 
ab  12.6 
an  15. 0 
ne  7. 4 

di  6.3 
ol  3.1 
mt  3. 7 

Mte.  Venere,  Mte. 
Vico,  n.  Viterbo, 
Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

V.  G.,  IV,  p.  849, 

1896. 

Leucite- 

trachyte. 

SUBRANG  3.  SODIPOTASSIC.  MONZONOSE. 


F 

0. 04 

Q 

4.9 

di 

2.5 

FeS., 

0. 32 

or 

24.5 

hy 

6.9 

NiO 

trace 

ab 

37.2 

mt 

3.2 

an 

15.0 

il 

2.9 

ap 

1.3 

Q 

8.4 

di 

1.3 

or 

28.4 

hy 

2.7 

ab 

40.3 

mt 

4.4 

an 

8.6 

il 

2.3 

hm 

2.0 

SrO 

0.10 

Q 

6.2 

di 

11.9 

Li20 

trace 

or 

26.7 

hv 

5.0 

ab 

36.7 

mt 

3.0 

an 

8.3 

il 

!.! 

SrO 

0.13 

or 

25.0 

di 

19.1 

LioO 

trace 

ab 

28.8 

hy 

9.9 

an 

11.1 

mt 

2.6 

il 

1.5 

ap 

1.3 

Cro03 

trace 

or 

22.8 

di 

14.8 

SrO 

0. 05 

ab 

23.6 

hy 

7.0 

LioO 

trace 

an 

14.2 

ol 

8.0 

mt 

3.9 

il 

1.1 

ap 

1.1 

so3 

trace 

or 

28.4 

di 

16.6 

Cl 

0.07 

ab 

23.1 

ol 

7.0 

F 

trace 

an 

12.0 

mt 

4.4 

SrO 

0. 09 

ne 

4.0 

il 

1.2 

LioO 

trace 

ap 

1.8 

so3 

0.23 

Q 

5.3 

hy 

4.6 

Cl 

0. 32 

or 

37.8 

mt 

5.8 

SrO 

trace 

ab 

21.0 

il 

0.8 

an 

15.0 

hm 

0.8 

so 

3.9 

ap 

1.3 

no 

1.8 

so3 

0. 19 

or 

24.5 

di 

6.5 

Cr203 

0.08 

ab 

25.2 

hv 

2.4 

an 

12  2 

oi 

20.6 

mt 

3.9 

il 

1.1 

NiO 

0.12 

Q 

1.4 

di 

0.4 

or 

32.2 

hy 

5.0 

ab 

37.2 

mt 

1.9 

an 

14.5 

il 

1.2 

hm 

3.0 

ap 

1.1 

Mount  Ascutney, 
V  ermont. 


Elliott  County, 
Kentucky. 


Yogo  Peak,  Little 
Belt  Mountains, 
Montana. 

Yogo  Peak,  Little 
Belt  Mountains, 
Montana. 


Sheep  Creek,  Little 
Belt  Mountains, 
Montana. 


Beaver  Creek,  Bear- 
paw  Mountains, 
Montana. 


Aspen  Creek, 

Highwood  Moun¬ 
tains,  Montana. 


Cottonwood  Creek, 
Montana. 


Stinkingwater  River, 
Yellowstone  Na¬ 
tional  Park. 


W.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  69,  1897. 

Diorite. 

T.  M.  Chatard. 

J.  S.  Diller, 

A.  J.  S.,  XXXII, 
p.  125,  1886. 

Syenite. 

Also  in  B.  U.  S. 
G.  S.,  38,  p.  24, 
1887. 

W.  F.  Hille- 
brand. 

Weed  and  Pirsson, 

A.  J.  S.,  L,  p.  471, 
1895. 

Syenite. 

Also  in  20  A.  R. 
U.S.G.S.,111, 
p.  473,  1900. 

W.  F.  Hille- 
brand. 

Weed  and  Pirsson, 

A.  J.  S.,  L,  p.  473, 
1895. 

Monzonite 

(yogoite). 

Also  in  20  A.  R. 
U.S.G.S.,III, 
p.  478,  1900. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.  R.  U.  S.  G.  S., 
Ill,  p.  531,  1900. 

Augite-minette. 

H.  N.  Stokes. 

Weed  and  Pirsson, 

A.  J.  S.,  I,  p.  357, 

1896. 

Monzonite. 

w 

--4 

o 

o 

r~t- 

a> 

L.  V.  Pirsson, 

B.  U.  S.  G.  S.,  148, 
p.  152,  1897. 

Trachyte. 

T.  M.  Chatard. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 
XVII,  p.  670,  1895. 

Lamprophyre. 

W.  H.  Melville. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.  947, 1895. 

Quartz- 

banakite. 

256 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued.  . 


RANG  2.  DOMALKALIC.  MONZONASE— Continued. 


No. 

Si02 

A1A 

1 

FeA 

FeO 

1 

MgO 

CaO 

Na20  ; 

k2o 

H20-j- 

H20— 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

10 

52.  63 

16.  87 

4.52 

3. 11 

3.  69 

4.  77 

3.  86 

5.17 

3.  65 

0.81 

0.  63 

0. 10 

0.  29 

100. 10 

Al.  I 

.877 

.164 

.028 

.043 

.092 

.086 

.062 

.  056 

.010 

.004 

.001 

.002 

11 

52.  33 

18.  70 

4.95 

1.83 

2.69 

4.  71 

4.51 

5. 45 

2.  71 

0.  74 

0.  71 

0.  81 

0.  03 

100.  31 

Al.  I 

.872 

.183 

.031 

.025 

.067 

.084 

.072 

.059 

.009 

.005 

— 

12 

Al.  I 

52. 10 

.868 

16.  34 

.160 

3.  84 

.024 

6.  82 

.095 

4.  33 

.108 

4.  73 

.084 

4.  02 

.065 

4.20 

.045 

1.  74 

0.  79 

.010 

0.  68 

.005 

trace 

100. 18 
.  05 

100. 13 

13 

51.  82 

16.  75 

4.56 

3.  36 

4.  03 

4.  94 

3.  91 

5.02 

3.97 

0.71 

0.  52 

0.  23 

0.  26 

100.  08 

Al.  I 

.864 

.164 

.029 

.047 

.101 

.088 

.063 

.054 

.009 

.003 

.003 

.002 

14 

51.46 

18.32 

4.61 

2.  71 

2.91 

6.  03 

4. 11 

4.  48 

3.  89 

0.  83 

0.  86 

0.17 

100.  38 

A 2.  II 

.858 

IS'" 

.029 

.008 

.073 

.108 

.066 

.048 

.010 

.006 

.002 

15 

59.  78 

16.  86 

3.08 

3.  72 

0.  69 

2.  96 

5.39 

5.01 

1.58 

0.  75 

0. 14 

99.  96 

2.  689 

A3.  Ill 

.996 

.  166 

.020 

.  051 

.017 

.053 

.087 

.054 

.002 

30° 

16 

59.  79 

17.25 

3.  60 

1.59 

1.24 

3.  77 

5.  04 

5.05 

0.  39 

0. 19 

0.  72 

0.  67 

0.  35 

0.  20 

0. 14 

100. 14 

2.  704 

Al.  I 

.997 

.169 

.023 

.022 

.031 

.068 

.081 

.  055 

.008 

.002 

.003 

.  001 

25° 

17 

57.  48 

'18.  04 

5.  73 

0.  73 

1.17 

5.  03 

4.  28 

4. 15 

0.  55 

0.  62 

1.00 

0.  66 

trace 

0.  20 

99.  98 

Al.  I 

.958 

.176 

.035 

.010 

.029 

.089 

.069 

.044 

.012 

.005 

— 

.001 

18 

57.48 

14.  09 

5.21 

1.35 

3.  49 

6.05 

3.  00 

4.  69 

1.37 

1.20 

0.  94 

0.  65 

0.09 

0.  23 

99.  92 

Al.  I 

.958 

.138 

.033 

.019 

.087 

.108 

.048 

.050 

.012 

.005 

.001 

.002 

19 

57.  04 

13.  66 

4.96 

1.77 

4.  43 

6.23 

3.  08 

4.  95 

1. 10 

1.11 

0.  94 

0.  63 

0. 17 

0.  22 

100. 36 

Al.  I 

.951 

.134 

.031 

.025 

.ill 

.Ill 

.050 

.053 

.012 

.004 

.002 

.002 

t 

20 

55.  35 

12.91 

4.  67 

2.06 

6.  29 

5.  77 

2.  65 

4.  86 

1. 18 

2.  67 

0.  87 

0.  58 

0.08 

0. 19 

99.  98 

Al.  I 

.923 

.126 

.029 

.029 

.157 

.103 

.043 

.052 

.oil 

.004 

.001 

.001 

21 

59. 43 

16.  68 

2.54 

3.  48 

1.84 

4.  09 

3.  72 

5.  04 

0.  72 

0.  27 

1.38 

0.  58 

trace 

0. 14 

100. 04 

2.  61 

Al.  I 

.991 

.163 

.015 

.049 

.046 

.073 

.059 

.054 

.017 

.004 

— 

.001 

22 

58. 18 

18.  46 

2. 31 

3.  79 

1.99 

3.11 

3.  70 

6. 58 

0.  64 

0.  68 

0. 41 ' 

0.  29 

100. 14 

2.  777 

A2.  II 

.970 

.181 

.014 

.053 

.050 

.055 

.060 

.070 

.008 

.003 

.002 

23 

52.00 

18.  06 

2.18 

5. 14 

2.  84 

4.  59 

3.  78 

4.  68 

1.  84 

3.  59 

0.  98 

0.  25 

99.  93 

A2.  II 

.867 

.176 

.014 

.071 

.071 

.082 

.061 

.050 

.012 

.004 

24 

58.00 

16.91 

3.  29 

3.  74 

1.96 

3.  60 

5. 14 

5. 20 

0.60 

0.  85 

0.  80 

100.  09 

A2.  II 

.  967 

.166 

.021 

.052 

.049 

.064 

.083 

.055 

.011 

.011 

DOS  ALAN  E - MONZONOS  E . 


257 


ORDER  5.  PERFELIC.  GERM  AN  A  RE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  MONZONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  31.1 
ab  30. 9 
an  12.8 
ne  0. 9 

di 

ol 

mt 

il 

ap 

6.0 

4.9 

6.5 

1.5 
1.4 

Hoodoo  Mountain, 
Yellowstone  Na¬ 
tional  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.  947,  1895. 

Banakite. 

NiO 

0. 14 

or  32.8 
ab  27.8 
an  13.5 
ne  5. 4 

di 

ol 

mt 

il 

lim 

ap 

3.4 

3.6 

3.7 

1.4 

2.4 

1.7 

Stinkingwater  River, 
Yellowstone  Na¬ 
tional  Park. 

W.  H.  Melville. 

J.  P.  Iddings, 

J.  G-,  III,  p-  947,  1895. 

Banakite. 

so3 

Cl 

Li20 

0.22 

0. 24 

0. 13 

Q  1.1 
or  25.0 
ab  22. 0 
an  16.7 
so  3.3 
no  2. 1 

di 

hy 

mt 

il 

ap 

1.5 
18.0 

5.6 

1.5 

1.6 

Indian  Creek  Lacco¬ 
lith,  Yellowstone 
National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  83,  1899. 

Augite-a  ndesite- 
porphyry. 

Same  sheet  as 
No.  8,  kental- 
lenose. 

or  30.0 
ab  28.3 
an  13.1 
ne  2. 6 

di 

ol 

mt 

il 

ap 

7.0 

5.6 

6. 7 
1.4 
1.1 

Lamar  River,  Yellow- 
stone  National 
Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.  947, 1895. 

Banakite. 

or  26.7 
ab  30. 9 
an  18. 3 
ne  2. 0 

di 

ol 

mt 

il 

ap 

4.8 

3.6 

6.7 
1.5 
2.0 

Ishawooa  Canyon, 
Wyoming. 

L.  G.  Eakins. 

.T.  P.  Iddings, 

J.  G.,  Ill,  p.  947,  1895. 

Banakite. 

Q  1.4 
or  30.0 
ab  45.  6 
an  7.0 

di 

hy 

mt 

6.7 

2.4 

4.6 

Silver  Cliff, 

Colorado. 

L.  G.  Eakins. 

W.  Cross, 

Pr.  Col.  Sc.  Soc.,  II, 
p.  240,  1887. 

Syenite. 

Also  in  17  A.  R. 
U.S.  G.S.,11, 
p.  281,  1896. 

so3 

Cl 

SrO 

LioO 

0.04 

trace 

0.11 

trace 

Q  3.1 
or  30.6 
ab  42. 4 
an  9.5 

di 

mt 

il 

hm 

ap 

6.7 

3.2 

1.2 
1.4 
0.8 

Near  Tirbircio  Gulch, 
La  Plata  Mountains, 
Colorado. 

H.  N.  Stokes. 

W.  Cross, 

B.  U.  S.  G.S.,  168, 
p.  162,  1900. 

Syenite. 

ZrOo 

SO,' 

VoOg 

SrO 

0.04 

0.16 

0. 02 

0. 12 

Q  6.8 
or  24. 5 
ab  36.2 
an  17. 5 

di 

hy 

il 

hm 

ap 

2.3 

1.8 

1.5 
5.7 

1.6 

Wicher  Mountain, 
Pike’s  Peak, 
Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  163,  1897. 

' 

Pyroxene- 

andesite? 

Complete  in  B. 
U.S.G.S.,168, 
p.  145,  1900. 

NiO 

SrO 

Li.>0 

0.08 

trace 

none 

Q  9.0 
or  27.8 
ab  25.2 
an  11. 1 

di 

hy 

mt 

il 

hm 

ap 

11.5 

3.4 

1.9 

1.8 

4.0 

1.6 

Santa  Maria  Basin, 
Arizona. 

W.  F.  Hille- 
brand. 

J.  P.  Iddings, 

B.  Ph.  Soc.  Wash., 
XII,  p,  212,  1892. 

Mica-basalt. 

Nearadamellose. 
Also  in  B.  U. 
S.  G.  S.,  148, 
p.  187,  1897. 

NiO 

SrO 

LioO 

0. 07 

trace 

trace? 

Q  6.6 
or  29.5 
ab  26.2 
an  9. 2 

di 

hy 

mt 

il 

hm 

ap 

9.9 
6. 5 
3.2 
1.8 
2.7 
1.4 

Santa  Maria  Basin, 
Arizona. 

W.  F.  Hille- 
brand. 

J.  P.  Iddings, 

B.  Ph.  Soc.  Wash., 
XII,  p.  212,  1892. 

Mica-basalt. 

Nearadamellose. 
Also  in  B.  U. 
S.  G.  S.,  148, 
p.  187,  1897. 

NiO 

SrO 

LioO 

0.05 

trace 

trace 

Q  4.4 
or  28.9 
ab  22.5 
an  8. 6 

di 

hy 

mt 

il 

hm 

ap 

13.0 

9.7 

4.4 

1.7 
1.6 

1.4 

Santa  Maria  Basin, 
Arizona. 

W.  F.  Hille- 
brand. 

J.  P.  Iddings, 

B.  Ph.  Soc.  Wash., 
XII,  p.  212,  1892. 

Mica-basalt. 

Nearadamellose. 
Also  in  B.  U. 
S.  G.  S.,  1 4s. 
p.  187,  1897. 

Zi02 

SrO 

LioO 

0.08 

trace 

none 

Q  8.4 
or  29.0 
ab  30. 9 
an  13.9 

di 

hy 

mt 

il 

ap 

2.3 
5.8 

3.5 

2.6 

1.4 

Dardanelle  Flow, 
Tuolumne  County, 
California. 

H.  N.  Stokes. 

F.  L.  Ransome, 

B.  U.  S.  G.  S.,  89, 
p.  58,  1898. 

Augite-latite. 

Also  in 

A.  J.  S.  V., 
p.  363,  1898. 

Q  0.4 
or  38.9 
ab  31.4 
an  14.2 

hy 

mt 

il 

ap 

9.1 

3.2 

1.2 
1.0 

Tito,  Coquimbo, 

Chile. 

A.  Lindner. 

F.  v.  Wolff, 

Z.  D.  G.  G.,  LI, 
p.  531,  1899. 

Odinite. 

or  27.8 
ab  30.4 
an  18. 1 
ne  0. 9 

di 

ol 

mt 

il 

3.9 

8.1 

3.2 

1.8 

Onston  Ness,  Orkney 
Islands. 

J.  S.  Flett. 

J.  S.  Flett, 

Tr.  R.  Soc.  Edinb., 
XXXIX,  pt.  4, 
p.  873,  1900. 

Bostonite. 

Not  fresh. 

or  30.6 
ab  43. 0 
•an  7.8 
ne  0.3 

di 

ol 

mt 

il 

8.2 

2.7 
4.9 

1.7 

Tuft,  Laugendal, 
Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  II, 
p.  33,  1895. 

Akerite. 

• 

14128  No.  14  03  17 

258 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOS ALANE— Continued. 
RANG  2.  DOMALKALIC.  MONZOXASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

H,0+ 

O 

co2 

Ti02 

FA 

MnO 

BaO 

Sum 

Sp.  gr. 

25 

56.  23 

17.22 

2.  81 

1.01 

4.  85 

1.79 

4.  33 

4.  81 

4.  87 

0. 55 

1.36 

0.21 

100.  26 

2.  56 

A2.  II 

.937 

.169 

.017 

.014 

.121 

.032 

.069 

.051 

.016 

.002 

26 

58. 41 

17.01 

3.  44 

2.  61 

2.  95 

4.  29 

4.  39 

4.  23 

1.59 

0.29 

0.  98 

0.  40 

100.  70 

2.  729 

A2.  11 

.974 

.167 

.022 

.036 

.074 

.077 

.071 

.045 

.012 

.003 

27 

58.  40 

16.81 

3.47 

2.  69 

3.  90 

1.54 

4.48 

5.03 

2.  66 

0.  48 

0.  25 

0.  43 

100. 14 

2.642 

A2.  II 

.973 

.  165 

.022 

.038 

.098 

.028 

.072 

.054 

.003 

.003 

28 

58.  40 

15.  61 

2.  72 

2.  94 

3.50 

3.  97 

3. 13 

5.37 

1.72 

2.  56 

0.  38 

0.40 

100.  70 

2.  674 

A2.  II 

.973 

.153 

.017 

.041 

.088 

.071 

.050 

.058 

.005 

.003 

\ 

29 

56.  29 

15.  52 

5.  28 

0.  84 

5.31 

2.47 

3.46 

5.  26 

3.  86 

0.  95 

trace 

0.37 

99.  77 

2.  660 

A2.  II 

.938 

.152 

.  033 

.011 

.133 

.045 

.056 

.057 

— 

.003 

30 

54.  81 

17.80 

2.69 

4.  46 

5.03 

1.  78 

1.06 

3.  86 

3.  56 

0.  44 

0.  75 

0. 45 

99.  69 

2.  712 

A2.  II 

.914 

.174 

.017 

.062 

.126 

.032 

.065 

.011 

.009 

.003 

31 

54.  64 

17. 13 

6.  79 

1. 17 

3.00 

3.  28 

4.43 

6.  29 

2.  00 

1.47 

0.  42 

100.  75 

2.  720 

A2.  II 

.911 

.168 

.042 

.017 

.075 

.059 

.071 

.067 

.018 

.003 

32 

53.  92 

16.  60 

6.  87 

0.  99 

4.  26 

3  54 

3.22 

7.45 

2. 15 

1.08 

0.  62 

100. 83 

2.  709 

A2.  II 

.899 

.163 

.043 

.014 

.107 

063 

.051 

.080 

.013 

.004 

33 

52.12 

13.  52 

2.56 

4.  53 

6.36 

5.  78 

2.  34 

5.36 

1.86 

3.  59 

1.20 

0. 92 

100.  36 

2.  726 

A2.  II 

.869 

.132 

.016 

.062 

.159 

.103 

.038 

.058 

.015 

.006 

34 

59.  86 

16.  68 

2.  79 

3.  00 

3.51 

3.  96 

3.58 

4.30 

1.44 

0.  75 

99.  87 

A3.  Ill 

.998 

.163 

.017 

.042 

.088 

.071 

.058 

.046 

.009 

35 

58.  69 

13.91 

2.  41 

3.  94 

6.63 

3.41 

2.62 

4. 53 

2.  69 

0.  83 

0.  30 

99.  96 

A2.  II 

.978 

.136 

.015 

.055 

.166 

.060 

.042 

.048 

.010 

.002 

36 

55.  35 

16.  71 

3.34 

6.31 

2.  04 

3.  70 

3.29 

5.69 

3.  26 

trace 

trace 

99.69 

2.  74 

A3.  Ill 

.923 

.164 

.021 

.088 

.051 

.066 

.053 

.061 

— 

— 

37 

54. 15 

18.  25 

3.  62 

2.  09 

2.  56 

4.  89 

4.  43 

6.56 

3.  69 

trace 

0.  41 

100. 65 

2.  632 

A3.  Ill 

.903 

.179 

.023 

.029 

.064 

.087 

.071 

.070 

— 

.003 

38 

54.  20 

15.  73 

3.  67 

5.40 

3.  40 

8.50 

3.  07 

4.  42 

0.  50 

0.  40 

0.  50 

0.  70 

100.  50 

A2.  II 

.903 

.154 

.023 

.  075 

.085 

.151 

.050 

.047 

.005 

.004 

.010 

39 

59.  73 

16. 79  , 

1.44 

3.21 

1.47 

3.  27 

4.  31 

6.  09 

3.  93 

0.17 

100.  31 

A3.  Ill 

.996 

.164 

.009 

.044 

.037 

.059 

.069 

.065 

.002 

40 

56.  75 

18.  37 

2.  22 

3.  04 

2.  02 

4.  68 

4.  85 

5.  92 

0.  18 

1.24 

trace 

99. 38 

B2.  Ill 

.946 

.180 

.014 

.042 

.051 

.083 

.078 

.063 

.015 

— 

DOSALANE - MONZONOSE. 


250 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  MONZONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03 

Org 

0.15 

0.07 

Q  1.9 
or  28.4 
ab  36.2 
an  8. 9 
C  1.7 

!F 

hip 

12.1 

2.3 

2.8 

Namborner  Miihle, 
Saar-Nahe  Gebiet, 
Rh.  Prussia. 

K.  Gremse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  290,  1892. 

Meso- 

keratophyr. 

Not  fresh. 

S03 

0. 11 

Q  5.0 
or  25.0 
ab  37.2 
an  14.2 

di 

hy 

mt 

il 

ap 

3.6 

6.0 

5.1 

1.8 

1.0 

Nahethal,  Rh.  Prus¬ 
sia. 

Hampe. 

H.  Loretz, 

Jb.  Pr.  G.  L-A.,  IX, 
p.  300,  1889. 

Porphyrite. 

S03 

trace 

Q  2.8 
or  30.0 
ab  37.7 
an  7.8 
C  1.1 

hy 

mt 

il 

11.9 

5.1 

0.5 

Ivreiseberg,  Thiiring- 
erwald. 

G.  F.  Steffen. 

H.  Loretz, 

Jb.  Pr.  G.  L-A.,  IX, 
p.  300,  1889. 

Biotite- 

porphyrite. 

so3 

trace 

Q  6.1 
or  32.2 
ab  26.2 
an  12. 5 

di 

hy 

mt 

il 

5.9 
8.2 

3.9 
0.8 

Unter  Neubrunn, 
Thiiringerwald. 

G.  F.  Steffen. 

H.  Loretz, 

Jb.  Pr.  G.  L-A.,  VIII, 

p.  108,  1888. 

Mica- 

porphvrite. 

Not  fresh. 

so3 

0. 16 

Q  2.9 
or  31.7 
ab  29.3 
an  10.8 

hy 

mt 

hm 

ap 

13.3 

2.6 

3.5 

0.8 

Gotteskopf, 
n.  Ilmenau, 
Thuringia. 

K.  Kliiss. 

H.  Loretz, 

Jb.  Pr.  G.  L-A., 

XIII,  p.  135,  1893. 

Porphyrite. 

S03  for  S. 

Not  fresh.  ' 

so3 

trace 

Q.  3.1 
or  22.8 
ab  34. 1 
an  8. 9 
C  3.7 

hy 

mt 

il 

17.3 

3.9 

1.4 

Unter  Neubrunn, 
Thiiringerwald. 

W.  Hampe. 

H.  Loretz, 

Jb.  Pr.  G.  L-A., 

VIII,  p.  105,  1888. 

Kersantite. 

Not  fresh. 

so3 

0. 13 

or  37.3 
ab  29.9 
an  8. 3 
ne  4. 0 

di 

ol 

il 

hm 

6.3 

3.2 

2.6 

6.8 

Langewiesen, 
n.  Ilmenau, 
Thuringia. 

Fischer. 

H.  Loretz, 

Jb.  Pr.  G.  L-A., 

XIII,  p.  135,  1893. 

Porphyrite. 

S03  for  S. 

so3 

0.13 

or  44. 5 
ab  19.  9 
an  8.9 
ne  3.7 

di 

ol 

il 

hm 

ap 

6. 7 

5.3 
2.1 
6.9 

1.4 

Langewiesen, 
n.  Ilmenau, 
Thuringia. 

Hesse. 

H.  Loretz, 

Jb.  Pr.  G.  L-A., 

XIII,  p.  135,  1893. 

Porphyrite. 

S03  for  S. 

so3 

0. 22 

Q  0.2 
or  32.2 
ab  20.0 
an  10.0 

di 

hy 

mt 

il 

ap 

10.3 

14.0 

3.7 

2.3 

2.0 

Unter  Neubrunn, 
Thiiringerwald. 

G.  F.  Steffen. 

H.  Loretz, 

Jb.  Pr.  G.  L-A., 

VIII,  p.  105,  1888. 

Kersantite. 

S03  for  S. 

Not  fresh. 

Q  8.4 
or  25.6 
ab  30. 4 
an  16.4 

di 

hy 

mt 

il 

2.6 

9.6 

3.9 

1.4 

Farrenkopf, 

Schwarzwald, 

Baden. 

M.  Dittrich. 

A.  Sauer, 

G.  Sp.  Kt.  Baden, 

Bl.  Horn  berg, 
p.  27,  1897. 

Syenite. 

Q  8.2 
or  26.7 
ab  22. 0 
an  12.8 

di  3.1 
hy  19.0 
mt  3. 5 
il  1.5 

Frohnau, 

Schwarzwald, 

Baden. 

M.  Dittrich. 

A.  Sauer, 

G.  Sp.  Kt.  Baden, 

Bl.  Hornberg, 
p.  27,  1897. 

Mica-syenite. 

Q  0.3 
or  33.9 
ab  27. 8 
an  13. 9 

di  3.8 
hy  12.1 
mt  4.9 

Neudeck, 

Silesia. 

H.  Traube. 

H.  Traube,  N.  J., 

1890,  I,  p.  225. 

Mica-syenite. 

or  38.9 
ab  20. 4 
an  10. 6 
ne  9.1 

di 

ol 

mt 

10.9 

1.5 

5.2 

Miihlorzen, 
n.  Gaute, 

Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XVII, 
p.  87,  1897. 

Gauteite. 

Not  fresh. 

or  26.1 
ab  26.2 
an  15.8 

di 

hy 

ol 

mt 

il 

ap 

18.4 

3.3 
2.8 

5.3 
0.8 

1.3 

Monzoni,  Tyrol. 

Y.  Schmelck. 

W.  C.  Brbgger, 

Eg.  Kg.,  II, 
p.  24,  1895. 

Monzoni  te. 

P205  approxi¬ 
mate. 

Q  1.9 
or  36.1 
ab  36. 2 
an  8.3 

di 

hy 

mt 

6.8 

5.0 

2.1 

Mte.  Amiata, 

Tuscany. 

L.  Ricciardi. 

A.  Verri, 

B.  Soc.  G.  It.,  VIII, 
p.  408,  1899. 

Trachyte. 

Cl 

0.11 

or  35.0 
ab  30.9 
an  10. 8 
ne  5.4 

di 

ol 

mt 

il 

10.0 

1.4 

3.2 

2.3 

L’Arso,  Ischia,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  VIII, 
p.  290,  1899. 

Trachyte 

(ciminite). 

Dried  at  110°. 
Sum  low. 

260 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOS ALANE— Continued. 
RANG  2.  DOMALKALIC.  MONZON-isE — Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

K.,0 

h2o+ 

H,0- 

o 

O 

TiOa 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

46.  77 

14.  91 

7.  80 

4.  90 

2.  94 

6.  30 

4.  97 

2.  37 

4.28 

0.  92 

trace 

2.  31 

0. 98 

0.  29 

0.  04 

99.90 

Al.  I 

.780 

.146 

.049 

.068 

.074 

.112 

.080 

.025 

.028 

.007 

.004 

— 

2 

59.  27 

15.  76 

2.  07 

3.  57 

3. 04 

3.  69 

5.  63 

3.  33 

0.  74 

0.  23 

0.  30 

1. 12 

0.  42 

0.37 

trace? 

100. 10 
.  19 

Al.  I 

.988 

.155 

.013 

.050 

.076 

.066 

.091 

.035 

.014 

.003 

.005 

— 

99. 91 

3 

56.  53 

16.  47 

1.58 

5.  40 

2.67 

4.  90 

5.59 

3.  80 

0.  60 

0.  23 

0.  05 

1.40 

0.  27 

0.  20 

trace 

99.  98 
.09 

Al.  I 

.942 

.161 

.010 

.075 

.067 

.088 

.090 

.040 

.017 

.002 

.003 

— 

99. 89 

4 

56.  51 

16.  59 

1.35 

6.  59 

2.  52 

4.  96 

5. 15 

3.05 

0.  71 

0.21 

0.  33 

1.20 

0.41 

0.24 

0.  03 

100.  26 
.  11 

Al.  I 

.942 

.163 

.008 

.092 

.063 

.089 

.083 

.032 

.015 

.003 

.003 

— 

100.15 

5 

56.  01 

15.  19 

2.  34 

4.  89 

4.  67 

4.  85 

5.66 

2. 16 

0.  90 

0.36 

1. 13 

0.53 

0.40 

trace? 

99.21 

Al.  I 

.934 

.149 

.016 

.068 

.117 

.087 

.091 

.023 

.014 

.004 

.006 

— 

6 

55.  28 

17.23 

1.54 

6.23 

2.  69 

5.60 

5.42 

2. 10 

0.  71 

0.  20 

0.  04 

1.64 

0.  73 

0.  24 

0. 06 

100. 15 
.  13 

Al.  I 

.921 

.169 

.010 

.087 

.067 

.100 

.087 

.023 

.020 

.005 

.003 

— 

100.02 

7 

61.  87 

17.  26 

2.  35 

2.  43 

1.82 

3.23 

5.18 

3.  83 

1.07 

0.  87 

0. 03 

99.94 

2.67 

A2.  II 

1.036 

.169 

.015 

.034 

.046 

.  058 

.083 

.041 

.011 

— 

8 

61.08 

16.  62 

2.  87 

2.  56 

1.65 

3.66 

4.  75 

3.90 

0.  97 

0.  44 

0.  73 

0.  63 

trace 

0.  32 

100.  26 

Al.  I 

1.018 

.163 

.018 

.036 

.041 

.065 

.077 

.041 

.009 

.005 

' - 

.002 

9 

58.  28 

17.89 

3.  20 

1.73 

1.51 

3.  69 

5.  89 

5.  34 

0.  98 

0.17 

0.  68 

0.  26 

0.  06 

0. 36 

100.  05 

Al.  I 

.971 

.175 

.020 

.024 

.038 

.066 

.095 

.057 

.oos 

.002 

.001 

.003 

10 

56.  75 

16.  40 

4.  78 

3.10 

3.  22 

5.  34 

4. 19 

3.  36 

0.  82 

0.  40 

0.  86 

0.52 

0. 17 

0.  33 

100.  34 

Al.  I 

.946 

.161 

.030 

.043 

.081 

.095 

.068 

.036 

.011 

.004 

.002 

.002 

11 

54.  69 

16.  53 

4. 54 

/ 

2.  83 

2.  99 

5.34 

5. 19 

3.  93 

1.05 

0.  32 

0.  83 

0.91 

0.  73 

0.  07 

0.  37 

100.  38 

Al.  I 

.912 

.162 

.028 

.040 

.  075 

.095 

.084 

.042 

.011 

.  005 

.001 

.003 

12 

52.  47 

18.23 

3.  31 

3.  85 

2.  85 

4.56' 

4.  83 

3.81 

2.  03 

0.  68 

1.01 

0.  97 

0.  64 

0. 15 

0.  23 

99.82 

Al.  I 

.876 

.179 

..020 

.054 

.071 

.081 

.077 

.040 

.012 

.005 

.002 

.002 

13 

57.  01 

18.41 

3.69 

2.  36 

2.  34 

4.29 

4.  95 

3.  72 

2.  29 

0.27 

0.  42 

0.21 

99.  96 

A2.  II 

.  950 

.180 

.023 

.033 

.059 

.077 

.080 

.040 

.003 

.003 

.003 

• 

14 

53.  80 

20. 13 

3.  57 

2.  63 

2.  26 

5.60 

5.  20 

4.  49 

0.  90 

0. 43 

0.  56 

0.  29 

99.86 

A2.  11 

.897 

.197 

.022 

.036 

.047 

.100 

.084 

.048 

.005 

.004 

.004 

15 

60.  44 

16.  65 

2.  31 

3.  09 

2. 18 

4.22 

5. 18 

2.  71 

1.07 

0.  36 

0.  48 

0.  60 

0.  29 

0.  13 

0. 12 

99.96 

2.677 

Al.  I 

1.007 

.163 

.014 

.043 

.055 

.075 

.084 

.029 

.008 

.002 

.002 

.001 

24° 

DOSALANE - AKEROSE. 


261 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  AKEROSE. 


Inclusive. 

Norm. 

ZrO  2 

none 

or 

13.9 

di 

10.8 

FeSo 

0. 07 

ab 

36.2 

Oi 

1.7 

Cr.)03 

none 

an 

11.4 

mt 

11.4 

Vo03 

0. 02 

ne 

3.1 

il 

4.3 

SrO 

0.03 

ap 

2.2 

LUO 

trace 

ZrOo 

0.04 

Q 

2.8 

di 

6.0 

Cl 

0.03 

or 

19.5 

hy 

7.8 

F 

0.42 

ab 

47.7 

mt 

3.0 

FeSj 

0.07 

an 

8.1 

il 

2.0 

NiO 

trace 

ap 

1.0 

ZrOo 

0.03 

or 

22.2 

di 

13.2 

Cl 

0. 07 

ab 

42.4 

ol 

3.7 

F 

0.19 

an 

8.6 

mt 

2.3 

FeS» 

trace 

ne 

2.6 

il 

2.6 

NiO 

trace 

ZrO, 

0. 04 

or 

17.8 

di 

6.8 

Cl 

0. 07 

ab 

43.5 

by 

10.9 

F 

0.24 

an 

13.3 

ol 

0.8 

FeS2 

0.06 

mt 

1.9 

NiO 

trace? 

il 

2.3 

ap 

1.1 

FeS.> 

0. 09 

or 

12.8 

di 

8.8 

NiO 

0. 03 

ab 

47.7 

hy 

9.4 

an 

9.7 

ol 

2.4 

mt 

3.7 

il 

2.0 

ap 

1.3 

Zr02 

trace 

Q 

0.2 

di 

7.7 

S03 

none 

or 

12. 8 

by 

10.5 

Cl 

0. 07 

ab 

45.6 

mt 

2.3 

F 

0.28 

an 

13.9 

il 

3.1 

FeS» 

0. 07 

ap 

1.7 

NiO 

? 

Q 

8.1 

di 

3.0 

or 

22.8 

hy 

4.3 

ab 

43.5 

mt 

3.5 

an 

12.5 

il 

1.7 

SrO 

0.  08 

Q 

10.0 

di 

1.1 

LUO 

trace 

or 

22.8 

hy 

4.9 

ab 

40.3 

mt 

4.2 

an 

12.5 

il 

1.4 

ap 

1.5 

SrO 

0.05 

or 

31.7 

di 

8.0 

LUO 

trace 

ab 

41.9 

mt 

4.6 

an 

6.4 

il 

1.2 

ne 

4.3 

ap 

0.7 

SrO 

0. 10 

Q 

6.1 

di 

4.9 

LiigO 

trace 

or 

20.0 

hy 

6.2 

ab 

35.6 

mt 

7.0 

an 

15.8 

il 

1.  5 

ap 

1.3 

Cl 

trace 

or 

23.4 

di 

9.0 

SrO 

0. 06 

ab 

41.9 

ol 

2.4 

LUO 

trace 

an 

10.0 

mt 

6.5 

ne 

1.1 

il 

1.7 

ap 

1.8 

ZrOo 

0.02 

or 

22.  2 

di 

1.2 

FeS, 

0.04 

ab 

39.8 

ol 

7.5 

Cr203 

trace 

an 

17.2 

mt 

4.6 

V2O3 

0.03 

ne 

0.3 

il 

1.8 

NiO 

trace 

ap 

1.4 

SrO 

0. 11 

Q 

2.2 

di 

1.7 

or 

22.2 

hy 

5.9 

ab 

41.9 

mt 

5.3 

an 

16.7 

il 

0.5 

ap 

1.0 

or 

26.7 

di 

4.5 

ab 

33.0 

ol 

2.6 

an 

18.1 

mt 

5.1 

ne 

6.0 

il 

0.8 

ap 

1.4 

S 

trace 

Q 

7.7 

di 

5.7 

V203 

0.02 

or 

16.  1 

hy 

5.5 

NiO 

none 

ab 

44.0 

mt 

3.2 

SrO 

0.11 

an 

13.9 

il 

1.2 

Li20 

trace 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Mapleton  Tpwnship, 
Aroostook  County, 
Maine. 

W.  F.  Hille- 
brand. 

H.  E.  Gregory, 

B.  U.  S.  G.  S.,  165, 
p.  183,  1900. 

Teschenite. 

Not  fresh. 

Mount  Ascutney, 
Vermont. 

IV.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  68,  1897. 

Segregation  in 
granite. 

Mount  Ascutney, 
Vermont. 

W.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  69,  1897. 

Segregation  in 
granite- 
porphyry. 

Mount  Ascutney, 

V  ermont. 

IV.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  68,  1897. 

Segregation  in 
syenite. 

Mount  Ascutney, 
Vermont. 

IV.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  68,  1897. 

Segregation  in 
granitite. 

Sum  low. 

Mount  Ascutney, 
Vermont. 

IV.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  70,  1897. 

Segregation  in 
diorite. 

Cottonwood  Creek, 
Castle  Mountains, 
Montana. 

L.  V.  Pirsson. 

Weed  &  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  88,  1896. 

Dioritic  syenite. 

Inclusion  in 
granite.  Near 
laurvikose. 

Three  Peaks, 

Crazy  Mountains, 
Montana. 

IV.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  142,  1897. 

Porphyrite. 

Nearlaurvikose. 

Shield’s  River  Basin, 
Crazy  Mountains, 
Montana. 

IV.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  143,  1897. 

Syenite. 

Near  monzon- 
ose 

Shield’s  River  Basin, 
Crazy  Mountains, 
Montana. 

IV.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  143,  1897. 

Porphyrite. 

North  Part  of  Crazy 
Mountains, 

Montana. 

IV.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  143,  1897. 

Porphyrite. 

Dike  Mountain, 
Yellowstone 
National  Park. 

IV.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  98,  1900. 

Trachyte- 

andesite. 

Lookout  Mountain, 
Silver  Cliff,  Colo¬ 
rado. 

L.  G.  Eakins. 

IV.  Cross, 

17  A.  R.  U.  S.  G.  S., 
II,  p.  231,  1896. 

Andesite. 

Mount  Fairvew, 

Rosita  Hills, 
Colorado. 

L.  G.  Eakins. 

IV.  Cross, 

17  A.  R.  U.  S.  G.  S., 

II,  p.  324,  1896. 

Augite-diorite. 

La  Plata  Mountains, 
Colorado. 

IV.  F.  Hille- 
brand. 

IV.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  181,  1897. 

Diorite- 

porphyry. 

Complete  in  B. 
U.S.G.S.  168, 
p. 162, 1900. 

262 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOS ALANE— Continued. 

RANG  2.  DOMALKALIC.  MONZONASE— Continued. 


No. 

Si0.2 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.gr. 

16 

55.  53 

16.  78 

4.  06 

3.35 

3.  00 

6.’ 96 

4.31 

3.  57 

0.  55 

0.09 

0.  09 

0.  95 

0.  47 

0. 16 

0. 13 

100. 17 

2.  79 

Al.  I 

.926 

.164 

.025 

.047 

.075 

.125 

.069 

.038 

.012 

.003 

.002 

.001 

21° 

17 

54.  34 

19.  23 

3.19 

2.11 

1.28 

4.  53 

6.  38 

5. 14 

1.17 

0. 14 

1.09 

0.27 

0.  08 

0.  24 

99.  77 

’2.68 

Al.  I 

'  .906 

.189 

.020 

.030 

.032 

.081 

.103 

.055 

.013 

.002 

.001 

.002 

18 

49.84 

17.  78 

5.86 

2.  62 

3.02 

7.35 

5.  20 

3.  04 

2.  02 

0.34 

0.  52 

1. 43 

0.  76 

0.21 

0.22 

100.  42 

Al.  I 

.831 

.174 

.037 

.036 

.  076 

.131 

.084 

.032 

.017 

.005 

.003 

.002 

19 

61.26 

16.15 

4. 39 

2.  66 

2.91 

5.  75 

4.  93 

2.  65 

0. 15 

100.  85 

B3.  IV 

1.021 

.158 

.027 

.037 

.073 

.102 

.079 

.028 

20 

60.  09 

19.  04 

3. 14 

1.89 

4.  20 

2.91 

5.26 

2.  95 

0.  98 

100.  46 

A3.  Ill 

1.002 

.186 

A 

.020 

.027 

.105 

.051 

.085 

.032 

21 

59.54 

13.04 

4.  74 

6. 13 

1.33 

3.81 

5.88 

3.  86 

0.  68 

0. 18 

0.  59 

0.  49 

100.  32 

A3.  Ill 

.992 

.128 

.029 

.085 

.033 

.068 

.095 

.041 

.004 

.007 

22 

59.06 

16.  79 

3.47 

4.81 

3.  00 

5.22 

4.  60 

2.  79 

0.  95 

100.  69 

A3.  Ill 

.984 

.164 

.022 

.067 

.075 

.093 

0.  74 

.030 

23 

59.  56 

17.  60 

2.  90 

3.  38 

1.87 

3.  67 

4.  88 

4.40 

1.37 

1  99 

0.  03 

101.  32 

2.  729 

C2.  IV 

.976 

.173 

.018 

.047 

.047 

.066 

.079 

.047 

.015 

— 

24 

58.  48 

19.24 

5.  75 

n.  d. 

0.99 

5.02 

5.  52 

3.  06 

0.  47 

0.  96 

trace 

99.  41 

B4.  V 

.975 

.189 

.036 

(.072) 

.025 

.090 

.087 

.033 

.012 

— 

25 

51.  22 

17.56 

3.51 

4.  34 

3.  22 

4.52 

5.  72 

4.  37 

1.93 

0.60 

1.70 

1.08 

0.  20 

99.97 

A2.  II 

.854 

.172 

.022 

.060 

.081 

.081 

.092 

.046 

.021 

•  .008 

.003 

26 

55. 17 

13.  49 

3. 10 

3. 55 

8.  55 

3. 15 

4.43 

1.09 

4.  27 

3.27 

0.39 

100.  46 

A3.  Ill 

.  920 

.132 

.020 

.050 

.214 

.  056 

.071 

.012 

.006 

27 

53. 12 

20.  48 

5. 13 

1.50 

1.88 

4.  29 

6.  20 

4.  88 

2.25 

0.  25 

0.  43 

100. 59 

2.  674 

A2.  II 

.885 

.201 

.032 

.021 

.047 

.  076 

.100 

.052 

.003 

.003 

28 

60.  22 

16.  96 

6.  34 

0.  80 

1.05 

3. 19 

5.  53 

4.32 

1.53 

trace 

0.  44 

100.  45 

2.662 

A2.  II 

1.004 

.166 

.039 

.011 

.026 

.  057 

.089 

.046 

.003 

29 

58.  04 

16.  78 

5.13 

3.63 

2.  62 

4.52 

5.41 

4. 14 

0.57 

trace 

100.  84 

A3.  Ill 

.967 

.164 

.031 

.050 

.066 

.080 

.987 

.044 

— 

30 

57.  90 

16.01 

5.  82 

4.21 

2.34 

5.11 

4.  46 

3.  73 

0.  98 

• 

trace 

100.  56 

A3.  Ill 

.965 

.  157 

.036 

.058 

.059 

.091 

.072 

.039 

31 

53.60 

14.43 

1.62 

8.  70 

0.  41 

8.00 

5.61 

2.03 

2.  02 

0.52 

1.98 

0. 16 

100. 16 

A2.  II. 

.893 

.141 

.010 

.121 

.010 

.143 

.090 

.021 

.025 

.001 

32 

53.  26 

16.  63 

8.  29 

3.21 

1. 10 

7.30 

5.  31 

3.  54 

1.43 

0.  31 

100. 38 

2.  671 

A3.  Ill 

.888 

.163 

.052 

.044 

.028 

.130 

.085 

.037 

.004 

DOSALANE - AKEROSE. 


203 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  AKEROSE— Continued. 


Inclusive. 

Norm. 

FeS- 

0.04 

Q 

1.6 

di 

12.9 

Vo03 

0.02 

or 

21.1 

hy 

2.7 

NiO 

trace 

ab 

36.2 

mt 

5.8 

SrO 

0.11 

an 

15.8 

il 

1.8 

Li.>0 

trace 

ap 

1.1 

ZrOo 

0. 07 

or 

30.6 

di 

6.9 

so3 

0. 07 

ab 

34.1 

WO 

1.3 

Cl 

0.28 

an 

9.2 

mt 

4.6 

VoOg 

0.02 

ne 

6.0 

il 

2.0 

SrO 

0.16 

so 

3.9 

ap 

0.7 

LioO 

trace 

ZrO, 

0.02 

or 

17.8 

di 

12.0 

so3 

none 

ab 

30.4 

ol 

1.4 

Cl 

trace 

an 

16.1 

mt 

4.4 

v,,0:i 

0. 03 

ne 

7.4 

il 

2.  6 

SrO 

0. 18 

ap 

1.8 

Li20 

trace  . 

Q 

8.6 

di 

11.3 

or 

15.6 

by 

3.2 

ab 

41.4 

mt 

6.  3 

an 

14.2 

Q 

5.2 

hy 

11.4 

or 

17.8 

mt 

4.6 

ab 

44.5 

an 

14.2 

c 

1.8 

Q 

1.7 

ac 

3.7 

or 

22.8 

di 

13.3 

ab 

45.6 

hv 

6.3 

mt 

4.9 

ap 

1.4 

Q 

1.6 

di 

19.9 

or 

16.7 

hy 

2.9 

ab 

38.8 

mt 

5.1 

an 

16.7 

Q 

2.8 

di 

4.5 

or 

26.1 

hy 

4.4 

ab 

41.4 

mt 

4.2 

an 

13.1 

il 

2.3 

Q 

0.7 

di 

5.0 

or 

18.3 

hv 

7.9 

ab 

45.6 

il 

1.8 

an 

19.2 

or 

25.6 

di 

5.3 

ab 

32.0 

ol 

5.6 

an 

9.5 

mt 

5.1 

ne 

8.8 

il 

3.2 

ap 

2.5 

Q 

4.4 

di 

1.5 

or 

6.7 

hy 

24.6 

ab 

37.2 

mt 

4. 6  . 

an 

13.6 

so3 

0.14 

or 

28.9 

di 

2.0 

Cl 

0. 28 

ab 

32.5 

ol 

2.6 

an 

15.0 

mt 

4.2 

ne 

8.8 

il 

0.5 

hm 

2.2 

ap 

1.0 

so3 

0.07 

Q 

5.4 

di 

3.4 

or 

25.6 

hy 

1.0 

ab 

46. 6 

mt 

2.6 

an 

8.6 

hm 

4.5 

ap 

1.0 

Cl 

trace 

or 

24.5 

di 

10.6 

ab 

45.6 

hy 

0.4 

an 

9.2 

ol 

2.4 

mt 

7.2 

Q 

4.9 

di 

10.2 

or 

21.7 

hy 

3.9 

ab 

37.7 

mt 

8.4 

an 

12.8 

so3 

0.15 

or 

11.7 

di 

23.8 

X 

0.93 

ab 

41.4 

WO 

1.9 

an 

8.3 

mt 

2.3 

ne 

3.1 

il 

3.7 

or 

20.6 

di 

6.1 

ab 

38.8 

wo 

7.2 

an 

11.4 

mt 

9.3 

n  e 

3.1 

il 

0.6 

hm 

1.9 

Locality. 


Analyst. 


La  Plata  Mountains,  W.  F.  Hille- 
Colorado.  brand. 


'Longfellow  Mine, 
Cripple  Creek, Colo¬ 
rado. 


Bull  Cliff,  Cripple 
Creek,  Colorado. 


VV.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


Lava  of  1869,  Pasta  j  R.  Ktich. 


Volcano,  Colombia. 


Misti  Volcano,  Are-  F.  H.  Hatch, 
quipa,  Peru. 


Tamaya,  Chile. 


C.  Schwarz. 


Cuesta  del  Cuzco,  San  B.  Wetzig. 
Antonio  Valley,  Ar¬ 


gentina. 


Vettakollen,  n.  Chris¬ 
tiania,  Norway. 


Bananas,  Christiania 
Region,  Norway. 


Brathagen,  Laugen? 


dal,  Norway. 


Vera,  Cabo  de  Gata, 
Spain. 


Bauza,  Columbretes 
Islands,  Spain. 


Wambacher  Hof, 
Pfalz,  Germany. 


Bruder  Kunzberg,  n. 
Honnef,  Siebenge- 
birge. 

Bruder  Kunzberg,  n. 
Honnef,  Siebenge- 
birge. 

Gottsbiiren, 

Reinhardswald, 

Rh.  Prussia. 

Kauling-Beil  stein, 
n.  Kreuzberg, 
Rhongebirge. 


P.  Jannasch. 


R.  Mauzelius. 


V.  Schmelck. 


A.  Osann. 


R.  Pfohl. 


K.  Kltiss. 


W.  Bruhns. 


W.  Bruhns. 


P.  Jannasch. 


E.  v.  Seyfried. 


Reference. 

Author’s  name. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  181,  1897. 

Diorite. 

W.  Cross, 

16  A.  R.  IT.  S.  G.  S., 

II,  p.  45,  1895. 

Nephelite- 

syenite. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  162, 1897. 

Local  facies  of 
phonolite. 

R.  Kiich, 

G.  Stud.  Colomb.. 

I,  p.  141, 1892. 

Pyroxene- 

andesite. 

F.  H.  Hatch, 

T.  M.  P.  M.,  VII, 
p.  328,  1886. 

Pyroxene- 

andesite. 

A.  v.  Groddeck, 

Z.  D.  G.  G.,  XXXIX, 
p.  251,  1887. 

Porphyrite. 

A.  Stelzner, 

Btr.  G.  Arg.  Rep., 

I,  p.  212,  1885. 

Andendiorite. 

H.  O.  Lang, 

Nyt  Mag.,  XXX, 
p.40,  1884. 

Syenite. 
(Akerite,W.  C. 
B.) 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  46,  1890. 

Akerite. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  130,  1899. 

Soda-minette. 

A.  Osann, 

Z.  D.  G.  G.,  XLI, 
p.  311,  1889. 

Verite. 

F.  Becke, 

T.  M.  P.  M.,  XVI, 
p.  168,  1896. 

Trachyte. 

A.  Leppla, 

Jb.  Pr.  G.  L-A.,  XIV, 
p.  139,  1894. 

Porphyrite. 

W.  Bruhns, 

Vh.  Nh.  Ver.  Bonn., 
LI II,  p.  48,  1896. 

Trachyte. 

W.  Bruhns, 

Vh.  Nh.  Ver.  Bonn., 
LIII,  p.  48,  1896. 

Trachyte. 

F.  Rinne, 

Jb.  Pr.G. L-A.,  XIII, 
p.  98*,  1893. 

Basalt. 

E.  v.  Seyfried, 
c.f.  N.  J.,  1898,  II, 

p.  61. 

Tephrite. 

Remarks. 


Complete  in  B. 
U.S.G.S.  168, 
p. 162, 1900. 


Near  essexose. 


“Silicified.” 


Also  in  W.  C. 
Brogger,  Z.K., 
XVI,  p.  50, 
1890. 


Not  fresh. 


S03  and  Cl  from 
sea  water. 


Iron  oxides? 
Nearlaurvikose. 


Light  colored. 


Dark  colored. 


MgO  low? 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


264 

CLASS  II.  DOSALANE— Continued. 
RANG  2.  DOMALKALIC.  MONZONASE — Continued. 


1 

52.  59 

15.  93 

6. 12 

3. 96 

5.  04 

5.55 

5.  79 

0.  67 

2. 16 

0. 16 

none 

1.36 

0. 15 

0.  25 

99.  73 

A2.  II 

.877 

.156 

.038 

.055 

.126 

.099 

.093 

.007 

.017 

.001 

.004 

! 

2 

56.  51 

14.  07 

4.  04 

4.  65 

3.  95 

8.  44 

5.32 

0.  79 

1.51 

none 

0. 19 

0.  23 

trace 

99.  70  ! 

A2.  II 

.942 

.138 

.025 

.065 

.099 

.150 

.085 

.008 

.002 

.002 

— 

3 

57.  76 

18.  64 

3.  88 

0. 18 

1.79 

6.  56 

7.44 

1.52 

1.08 

0.  08 

1.06 

99.99  2.684 

A2.  II 

.963 

.183 

.024 

.003 

.045 

.117 

.120 

.016 

.001 

.015 

4 

54.  23 

15.22 

2.84 

9.  47 

2.  93 

8.56 

5.80 

0.  92 

1.00 

100.97 

B3.  IV 

.904 

.149 

.017 

.133 

.072 

.152 

.093 

.010 

] 

RANG  3.  ALKALICALCIC.  ANDASE. 


1 

A2.  II 


50.  81 

.847 


15. 13 

.148 


2.  40 
.015 


3.  52 

.049 


10.64 

.266 


4.  96 
.088 


1.01 

.016 


7. 01 

.074 


3.07 


1.71 

.021 


0.  62 
.004 


100.  88 


trace 


trace 


DOSALANE - SR  2  OF  ANDASE. 


265 


ORDER  5.  PERFELIC.  GERM  AN  ARE— Continued. 


SUBRANG  4.  DOSOOIC.  AKEROSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03 

0.08 

Q  5.5 
or  19.6 
ab  32.0 
an  15.3 

C  1.9 

hy  14.6 
mt  3.2 
il  2.2 

Pfeffelbach,  St. 

Wend  el,  Harz 
Mountains. 

Fischer. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  316,  1892. 

Porphyrite. 

Not  fresh. 

S03 

Org 

0. 10 

0.09 

Q  1.0 
or  11.1 
ab  36.7 
an  14.2 
C  3.0 

hy 

mt 

il 

22.7 

2.8 

2.2 

Pfeffelbach,  n.  St. 
Wendel,  Harz 
Mountains. 

Hesse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  316,  1892. 

Diabase? 

S03  for  S. 

Not  fresh. 

Near  andose. 

so3 

trace 

Q.  3.3 

or  18.9 
ab  34.6 
an  14.5 

di 

hy 

mt 

il 

3.2 
16.4 

4.2 
0.9 

W  iistewaltersdorf , 
Silesia. 

A.  Steffen. 

E.  Dathe, 

Z.D.G.G.,  XXXVII, 
p.  1035,  1885. 

Kersantite. 

Not  fresh. 

so3 

Cl 

none 

trace 

Q  0.4 
or  23.4 
ab  38.3 
an  17.5 

di 

hy 

mt 

hm 

ap 

8.8 

1.2 

4.2 

3.0 

1.5 

Kolme  Scheibe, 
Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XV, 
p.  258,  1896. 

Hauyne- 

tephrite. 

No  S03  or  Cl? 
Probably  does 
not  belong 
here. 

or  21.1 
ab  27.8 
an  20.0 
ne  9. 1 

di 

ol 

mt 

14.1 

1.9 

5.6 

Beresowska,  Perm, 
Russia. 

Loewinson-Les- 

sing. 

Loewinson-Lessing, 

G.  Sk.  Jushno-Sao., 
p.  244,  1900. 

Syenite-diorite. 

Q  7. 7 
or  22.2 
ab  44.5 
an  7. 8 

di 

mt 

il 

ap 

8.8 

6.0 

0.8 

1.0 

Kedabeg, 

Karabagh  Distr., 
Transcaucasus. 

A.  Rohrig. 

C.  R.  Thost, 

Abh.  Senkb.  N.  Ges., 
XVIII,  p.  221,  1894. 

Augite-granite. 

Not  fresh. 

so3 

s 

CuO 

0. 05 

0.05 

0. 10 

Q  3.6 
or  16.7 
ab  51. 4 
an  13. 9 

hy 

mt 

il 

hm 

ap 

4.0 

1.2 

3.5 
4.0 

1.6 

Kohala  Mountain, 
Waimea,  Hawaii. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S.  II, 
p.  424,  1896. 

Andesite. 

Calc,  to  100  per 
cent  after  de¬ 
ducting  H20 
H20-f  0.83 
H20  —  0.53. 

SUBRANG  5.  PERSODIC. 


or  3. 9 
ab  48. 7 
an  15. 6 

di 

hy 

ol 

mt 

il 

9.3 

7.5 
0.5 
8.8 

2.6 

Crystal  Falls,  Michi¬ 
gan. 

H.  N.  Stokes. 

J.  M.  Clements, 

M.  U.  S.  G.  S., 
XXXVI,  p.  106, 1899. 

Meta-basalt. 

S  trace 

Q  3.0 
or  4. 4 
ab  44. 5 
an  12. 5 

di 

hy 

mt 

23.7 

3.7 

5.8 

Grenada,  West  Indies. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rocks  of  Grenada, 
London,  1896,  p.  10. 

Augite-enstatite- 
an  desite. 

Average  sam  pie. 

or  8. 9 
ab  55.0 
an  13. 1 
ne  4.3 

di 

wo 

mt 

hm 

9.7 

2.9 

1.4 

3.3 

Lindenberg,  Hesse. 

F.  W.  Schmidt. 

C.  Chelius, 

Erl.  G.  Kt.  Hesse, 

I.  Bl.  Rossdorf, 
p.  54,  1886. 

Syenite. 

Calc,  to  100? 

or  5. 6 
ab  40. 9 
an  12.8 
ne  4. 3 

di 

ol 

mt 

24.8 

7.5 

3.9 

Victoria  Range,  West- 
land,  New  Zealand. 

W.  A.  MacLeod. 

W.  A.  MacLeod, 

Tr.N.  Z.  Inst.,  XXXI, 
p. 487,  1899. 

Dolerite. 

Sum  high. 

SUBRANG  2.  DOPOTASSIC. 


Cl  trace 

or  41. 4  di  3. 9 

Plauensche  Grund, 

B.  Doss. 

B.  Doss, 

Augite-minette. 

ab  8.4  hy  5.4 
an  16. 1  ol  14. 7 

Dresden,  Saxony. 

T.  M.  P.  M.,  XI, 

mt  3. 5 

p.  27,  1890. 

il  3.2 

ap  1. 4 

266 


CHEMICAL  ANALYSES  OF  IGNEOUS  KOCKS 


CLASS  II.  DOSALANE — Continued. 
RANG  3.  ALKaLICALCIO.  ANDASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

O 

o 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

58.  51 

16.  32 

2. 11 

4.  43 

3.  73 

3.  92 

3.11 

4.08 

2.00 

0.  23 

none 

0.  72 

0.  30 

trace 

99.  46 

All 

.  975 

.160 

.013 

.061 

.093 

.070 

.050 

.043 

.009 

.002 

— 

2 

57.97 

15.  65 

0.  73 

2.  80 

4.  96 

10. 93 

3.  03 

3. 16 

0.  38 

0.  22 

0.60 

0.15 

trace 

0.09 

100.69 

Al.  I 

.966 

.152 

.005 

.039 

.124 

.195 

.049 

.034 

.007 

.001 

.001 

3 

51.00 

17.21 

4.  23 

2.  41 

6. 19 

9. 15 

2.88 

4.93 

0.  63 

0. 13 

0.  33 

trace 

0.  34 

99.60 

Al.  I 

.850 

.169 

.026 

.033 

.155 

.163 

.047 

.053 

.002 

.002 

— 

.002 

4 

52.33 

15.09 

4.31 

4.03 

6.  73 

7.06 

3. 14 

3.  76 

2.68 

0. 14 

1.02 

0.  09 

0.  07 

100.  45 

2.  785 

Al.  I 

.872 

.148 

.027 

.  056 

.168 

.126 

.051 

.040 

.002 

.007 

.001 

.001 

5 

54.  97 

18.  38 

3.  06 

4.  22 

2.  38 

5. 43 

3.  45 

3.  37 

0.  82 

2. 92 

0.97 

0. 42 

trace 

100.  45 

Al.  I 

.916 

.180 

.020 

.  05S 

.060 

.097 

.056 

.036 

.012 

.003 

— 

6 

56.  05 

19.  70 

3.  74 

2.  32 

2.51 

4.  34 

3.  29 

4.  44 

1.86 

0.  98 

0.  66 

trace 

100. 14 

Al.  I 

.934 

.193 

.023 

.032 

.  063 

.077 

.053 

.047 

.012 

.005 

1 

7 

54.  86 

17.  28 

4. 08 

2.28 

4. 19 

5.  42 

3.  94 

3.  96 

2. 16 

0.  69 

0.  48 

0. 19 

0.37 

99.90 

Al.  I 

.914 

.169 

.025 

.032 

.105 

.096 

.063 

.042 

.009 

.003 

.003 

.003 

8 

53.  49 

17. 19 

4.  73 

3.25 

4.  42. 

6.  34 

3.  23 

3.86 

2.17 

0.71 

0. 43 

0. 14 

0. 06 

100.  02 

Al.  I 

.892 

.169 

.029 

.045 

.ill 

.113 

.052 

.041 

.009 

.003 

.002 

— 

9 

52.  93 

19.  67 

3.  07 

3.  50 

2.  88 

4.  69 

4.  20 

4.  75 

2.  73 

• 

0.  72 

0.  59 

0. 15 

0.  21 

100.  09 

Al.  I 

.882 

.193 

.020 

.049 

.072 

.084 

.068 

.051 

.009 

.004 

.002 

.002 

10 

52.  86 

17.51 

5. 18 

3.  31 

4. 18 

6.  51 

3.  22 

3.41 

1.76 

1.04 

0.53 

trace 

99.  93 

Al.  I 

.881 

.174 

.032 

.046 

.105 

.116 

.051 

.036 

.012 

.003 

11 

52.  49 

17.89 

5.  76 

2.08 

3.  49 

7.01 

3. 18 

3.  73 

2.  63 

0.  81 

0. 55 

0.  09 

0.  30 

100.  01 

Al.  I 

.  875 

.  175 

.036 

.030 

.087 

.125 

.051 

.039 

.010 

.004 

.001 

.002 

12 

52.11 

16.  58 

3.  66 

4.  99 

6.  87 

6.  43 

3.25 

3.  20 

1.99 

0.  53 

0.  63 

0.  23 

100.  47 

A2.  II 

.869 

.163 

.023 

.070 

.172 

.115 

.052 

.034 

.006 

.004 

.003 

13 

51.75 

17.48 

6.  42 

1.46 

4.05 

8.  20 

3.33 

3.  72 

2.26 

* 

0.  86 

0.  67 

trace 

100.  37 

Al.  I 

.863 

.172 

.040 

.020 

'.101 

.146 

.054 

.039 

.011 

.005 

— 

14 

51. 56 

21.00 

5.17 

2.  76 

2.  52 

4.  83 

4.37 

4. 13 

2.  27 

0.  65 

0.  69 

trace 

100.  29 

Al.  I 

.859 

.206 

.032 

.039 

.063 

.086 

.071 

.044 

.008 

.005 

— 

15 

51. 17 

16. 14 

4.  11 

4.  48 

4.  82 

7.  72 

2.99 

3.54 

2.24 

0.  63 

none 

1.01 

0.  48 

0.  21 

0.  20 

99.  94 

Al.  I 

.853 

.158 

.025 

.062 

.121 

.137 

.048 

.037 

.012 

.003 

.003 

.001 

DOSALANE— SHOSHONOSE. 


267 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  SHOSHONOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cr»Os 

NiO 

none 

none 

Q  9.0 
or  23.9 
ab  26.2 
an  18.6 

di  0. 8 
hy  14. 0 
mt  3. 0 
il  1.4 

Crystal  Falls,  Mich¬ 
igan. 

H.  N.  Stokes. 

J.  M.  Clements, 

J.G.,  VI,  p.  378, 1898. 

Mica-diorite. 

Also  in  M.  U.  S. 
G.S..XXXVI, 
p.  231,  1899. 

Cl 

F 

SrO 

Li,0 

trace 

trace 

0.02 

trace 

Q  3.1 
or  18.9 
ab  25.7 
an  19. 5 

di 

hy 

mt 

il 

27.8 

2.7 

1.2 

1.1 

Rock  Creek,  Crazy 
Mts.,  Montana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  144,  1897. 

Diorite. 

S03 

Cl 

SrO 

0.03 

trace 

0. 14 

or  29.5 
ab  11.5 
an  19.2 
ne  7. 7 

di 

ol 

mt 

ap 

18.8 

5.4 

6.0 

0.7 

Highwood  Peak, 

High  wood  Mts., 
Montana. 

E.  B.  Hurlbut. 

L.  V.  Pirsson, 

B.  U.  S.  G.  S.,  148, 
p.  154,  1897. 

Monzonite. 

or  22.2 
ab  26. 7 
an  15. 8 

di 

hy 

ol 

mt 

ap 

10.1 

9.3 
4.7 

6.3 

2.3 

Cottonwood  Creek, 
Montana. 

L.  G.  Eakins. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 
XVII,  p.  648,  1895. 

Augite- 

porphyrite. 

S03 

Cl 

Li.jO 

0.03 

trace 

0. 03 

Q  6.1 
or  20. 0 
ab  29.3 
an  24. 5 

hy 

mt 

il 

ap 

9.5 

4.6 
1.8 
1.0 

Baldy  Mountain,  Bear 
Gulch,  Montana. 

J.  P.  Whitfield. 

J.  P.  Iddings, 

B.  TJ.  S.  G.  S.,  148, 
p.  129,  1897. 

Shoshonite. 

SO3 

LUO 

0. 19 

0. 00 

Q  7.0 
or  26.1 
ab  27. 8 
an  21. 4 

C  1.6 

hy 

mt 

il 

6.3 

5.3 

1.4 

Two  Ocean  Pass, 
Yellowstone 
National  Park. 

J.  P.  Whitfield. 

J.  P.  Iddings, 

J.  G.,  HI,  p.  944, 1895. 

Shoshonite. 

Also  in  M.  U.  S. 
G.S., XXXII, 
p. 340, 1899. 

Q  1.8 
or  23.4 
ab  33. 0 
an  18. 1 

di 

hy 

mt 

il 

ap 

4.2 
8.6 
5.8 

1.2 
1.1 

Indian  Peak, 
Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.  944, 1895. 

Shoshonite. 

Also  in  M.  U.  S. 
G.S.,  XXXII, 
p. 340, 1899. 
Nearmonzonose. 

Q  2.1 
or  22.8 
ab  27. 2 
an  21. 1 

di 

hy 

mt 

il 

ap 

6.1 

9.2 

6.7 

1.4 

1.0 

Beaverdam  Creek, 

Y  ellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.  944, 1895. 

Shoshonite. 

Also  in  M.  IT.  S. 
G.S., XXXII, 
p. 340,1899. 

Probably  same 
as  No.  10  be¬ 
low. 

or  28.4 
ab  30. 4 
an  20. 6 
ne  2.8 

di 

ol 

mt 

il 

ap 

2.3 

6.3 
4.6 

1.4 
1.2 

Beaverdam  Creek, 
Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.  944, 1895. 

Leucite- 

banakite. 

* 

Also  in  M.  U.  S. 
G.S., XXXII, 
p. 349, 1899. 
Same  rock  as  No. 
14  below. 

S03 

Cl 

Li20 

0.22 

0.16 

0.04 

Q  3.2 
or  20. 0 
ab  26. 7 
an  24. 2 

di 

hy 

mt 

il 

ap 

4.3 

8.7 

7.4 

1.8 
1.1 

Beaverdam  Creek, 
Yellowstone 
National  Park. 

J.  P.  Whitfield. 

J.  P.  Iddings, 

B.  IT.  S.  G.  S.  148, 
p.  129,  1897. 

Shoshonite. 

Also  in  M.  IT.  S. 
G.S.. XXXII, 
p. 340, 1899. 
Probably  same 
as  No.  8  above. 

Q  3.2 
or  21.7 
ab  26. 7 
an  23. 6 

di 

hy 

mt 

il 

ap 

5.3 
5.1 
4.6 
1.5 

1.4 

Near  Pyramid  Peak, 
Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.944, 1895. 

Leucite? 

Shoshonite. 

Also  in  M.  U.  S. 
G.S., XXXII. 
p. 340, 1899. 

or  18.9 
ab  27.2 
an  21.4 

di 

hy 

ol 

mt 

il 

ap 

5.9 

11.6 

5.9 

5.3 
0.9 

1.3 

Hurricane  Ridge, 
Crandall  Basin, 
Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  260,  1899. 

Orthoclase- 

basalt. 

SO3 

Cl 

Li.,0 

0.17 

trace 

trace 

or  21.7 
ab  28. 3 
an  22. 0 

di 

hy 

ol 

mt 

il 

lim 

ap 

10.8 

4.3 
0.5 

2.3 
1.6 
4.8 
1.7 

Sepulchre  Mountain, 
Yellowstone 
National  Park. 

J.P.  Whitfield. 

J.  P.  Iddings, 

M.  S.  G.  S., 

XXXII,  p.  340,  1899. 

Shoshonite. 

SO3 

Cl 

Li,0 

0. 21 

trace 

0.13 

or  24.5 
ab  32.5 
an  23. 9 
ne  2.6 

ol 

mt 

il 

ap 

4.4 

7.4 
1.1 
1.7 

Beaver  Dam  Creek, 

Y  ellowstone 
National  Park. 

J.  P.  Whitfield. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  349,  1899. 

LeucRe- 

banakite. 

Same  rock  as 
No.  9  above. 

Zr02 

FeSs 

Cr2Og 

V,Os 

NiO 

SrO 

none 

0.05 

trace 

0.04 

0. 01 

0. 10 

or  20.6 
ab  25. 2 
an  20. 3 

di 

hy 

ol 

mt 

il 

ap 

12.4 

8.5 

0.6 

5.8 

1.8 
1.1 

Dike  Mountain,  Yel¬ 
lowstone  National 
Park. 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  98,  1900. 

Augite- 

andesite. 

268 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE— Continued. 


RANG  3.  ALKALICALCIC.  AND ASE— Continued. 


No. 

Si02 

Al-A 

FeA 

FeO 

MgO 

CaO 

NajO 

k20 

h20+ 

H20- 

co2 

Ti02 

FA 

MnO 

BaO 

Sum 

Sp.  gr. 

16 

50.  29 

15.85 

8.  22 

1.43 

4.  65 

7.  71 

2.  98 

3.53 

1.98 

1.77 

none 

0.  96 

0.51 

0. 15 

0. 15 

100.  27 

Al.  I 

.838 

.155 

.051 

.020 

.116 

.137 

.048 

.037 

.012 

.003 

.002 

.001 

17 

50.  06 

17.00 

2.  96 

5.42 

3.61 

8. 14 

3.  53 

3.  40 

4.  85 

0.51 

0.  66 

0. 14 

100.  28 

A2.  II 

.834 

.167 

.024 

.075 

.090 

.145 

.057 

.036 

.006 

.005 

.002 

18 

56.  90 

18.  50 

0. 17 

4.  61 

5. 10 

6. 17 

2.99 

4. 14 

0.51 

0. 19 

0.  79 

trace 

100.  07 

A2.  II 

.948 

.181 

.001 

.064 

.127 

.110 

.048 

.044 

.002 

.005 

— 

19 

52.  59 

17.91 

3.  81 

5. 18 

4.  11 

7.24 

2.  94 

3.  83 

1.24 

0.  84 

0. 14 

trace 

99.  88 

2.  83 

A2.  II 

.877 

.175 

.024 

.072 

.103 

.129 

.047 

.040 

.010 

.001 

— 

22°.  5 

20 

49.  69 

18.06 

2.  64 

6. 19 

5.  73 

8.  24 

2.99 

3.  90 

0.91 

m 

0.  85 

0.  81 

0. 13 

100.  27 

A2.  II 

.828 

.177 

.016 

.086 

.143 

.147 

.048 

.041 

.011 

006 

.002 

21 

48.  25 

16.  73 

3.99 

6.  28 

5.  77 

8.  32 

3.  24 

4.  08 

1.  72 

0.  89 

0.  68 

trace 

0.  01 

100. 16 

Al.  I 

.804 

.164 

.025 

.088 

.144 

.148 

.052 

.043 

.011 

.005 

— 

— 

22 

54.20 

15.86 

3.  32 

4. 14 

3.51 

5.  32 

3.  28 

3.  30 

2.  40 

0. 55 

1.45 

1.35 

0.  68 

0. 19 

0.  41 

100.  28 

Al.  I 

.903 

.156 

.021 

.058 

.088 

.095 

.053 

.035 

.017 

.005 

.003 

.003 

23 

56.  78 

16.  86 

3. 56 

2.  93 

3.  41 

6.57 

3. 19 

3.  48 

1.21 

0.15 

0. 18 

1.15 

0.  42 

99.  89 

2.  67 

A2.  II 

.946 

.165 

.022 

.040 

.085 

.118 

.051 

.037 

.014 

.003 

24 

56. 19 

16.  76 

3.05 

4. 18 

3.  79 

6.  53 

2. 53 

4.  46 

0.  66 

0.  34 

0.  69 

0.  55 

0. 10 

0. 19 

100.  02 

Al.  I 

.937 

.164 

.020 

.058 

.095 

.117 

.041 

.048 

.009 

.004 

.001 

.001 

23 

47.6 

17.6 

4.8 

5.8 

5.0 

8.6 

2.3 

4.3 

2.2 

1.6 

99.8 

A3.  Ill 

.792 

.172 

.030 

.080 

.125 

.153 

.037 

.046 

.020 

26 

47.1 

18. 1 

3.0 

8.5 

7.3 

6.6 

2.4 

2.8 

3.6 

0.4 

0. 1 

99.9 

A3.  Ill 

.785 

.177 

.019 

.118 

.183 

.118 

.039 

.030 

.005 

.001 

27 

58.  20 

19.  20 

1.10 

3.  52 

2.  01 

3.  67 

3.  60 

4.  55 

1.40 

2.  40 

99.  65 

A3.  Ill 

.970 

.188 

.007 

.049 

.050 

.066 

.058 

.049 

28 

59.  41 

17.  92 

1.71 

2.40 

2.  99 

4.  65 

2.  63 

5.60 

1.30 

0. 01 

0.  87 

99.  49 

A3.  Ill 

.990 

-  .175 

.011 

.033 

.077 

.083 

.042 

.060 

— 

.006 

29 

47.  50 

17.  57 

7.24 

5.  08 

3.  31 

7.09 

3.  60 

3.28 

1.70 

0.  30 

3.  02 

0.  48 

100. 17 

A2.  II 

.792 

.172 

.045 

.071 

.083 

.127 

.058 

.035 

.036 

.003 

30 

55. 19 

16.  42 

5.  20 

4.  28 

2.31 

8.  23 

2.  82 

3.  79 

2.  26 

100.  50 

2.  748 

A3.  Ill 

.920 

.161 

.032 

.060 

.058 

.146 

.045 

.040 

31 

51.98 

18.  84 

4.  98 

5.  40 

2.  77 

6.13 

3.04 

3.60 

2.  58 

99.  32 

A3.  Ill 

.866 

.185 

.031 

.075 

.069 

.109 

.049 

.038 

32 

54.23 

14.  37 

2.26 

4.  76 

7.  71 

7.00 

2.  56 

3.  30 

1.79 

0.  59 

0.  89 

0.  48 

100. 09 

2.  779 

A  2.  II 

.904 

.141 

.014 

.066 

.193 

.125 

.041 

.035 

^  .011 

.003 

DOSALAN  E - SHOSHONOSE. 


269 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 
SUBRANG  3.  SODIPOTASSIC.  SHOSHONOSE— Continued. 


Inclusive. 


Cl 

trace 

Q  0.9 

di 

12.3 

NiO 

trace 

or  20.6 

hy 

5.9 

SrO 

0.09 

ab  25.2 

mt 

1.9 

LioO 

trace 

an  19.5 

il 

1.8 

hm 

6.9 

ap 

1.1 

or  20.0 

di 

12.3 

ab  27.2 

ol 

6.5 

an  20. 7 

mt 

5.6 

ne  1. 4 

il 

0.9 

ap 

1.7 

Cl 

trace 

Q  1.3 

di 

1.4 

or  24.5 

hy  21.3 

ab  25.2 

mt 

0.4 

an  24. 7 

ap 

1.7 

Cl 

0. 05 

or  22.2 

di 

9.4 

ab  24.6 

hy 

10.1 

an  24.5 

ol 

0.4 

mt 

5.6 

il 

1.5 

Cl 

0. 13 

or  22.8 

di 

9.4 

ab  19.4 

ol 

12.8 

an  24.5 

mt 

3.7 

ne  3. 1 

il 

1.7 

ap 

1.9 

so3 

0.12 

or  23.9 

di 

14.6 

Cl 

0.08 

ab  14.7 

ol 

10.  3 

an  19.2 

mt 

5.8 

ne  6. 8 

il 

1.7 

ap 

1.6 

FeS2 

0.26 

Q  7.1 

di 

2.7 

NiO 

0.02 

or  19. 5 

hy 

10.2 

SrO 

0.04 

ab  27.8 

mt 

4.9 

LioO 

trace 

an  18.9 

il 

2.6 

ap 

1.6 

di 

8.0 

Q  8.6 

hy 

5.8 

or  20.6 

mt 

5.1 

ab  26. 7 

il 

2.2 

an  21. 4 

ap 

1.0 

SrO 

trace 

Q  5.9 

di 

6.8 

LiaO 

trace 

o-  26.7 

hy  10.1 

ab  21. 5 

mt 

4.6 

an  20. 9 

il 

1.2 

ap 

1.2 

or  25.6 

di 

14.3 

ab  12.0 

ol 

7.0 

an  24.  7 

mt 

7.0 

ne  4. 0 

il 

3.1 

or  16.7 

di 

2.3 

ab  20.4 

hy 

1.5 

an  30.0 

Ol 

19.5 

mt 

4.4 

il 

0.8 

Q  6.2 

hy 

10.5 

or  27.2 
ab  30. 4 
an  18.3 
C  1.5 

mt 

1.6 

Q  7.4 

di 

2.2 

or  33.4 

hy 

9.6 

ab  22. 0 
an  20. 3 

mt 

2.6 

or  19.5 

di 

8.2 

ab  27.2 

ol 

3.2 

an  22. 0 

mt 

8.1 

ne  1.7 

il 

5.5 

hm 

1.6 

ap 

1.1 

Q  6.1 

•di 

15.8 

or  22.2 

hy 

1.8 

ab  23. 6 
an  21. 1 

mt 

7.4 

Q  1.4 

di 

2.5 

or  21. 1 

hy 

11.4 

ab  25.  7 
an  27.2 

mt 

7.2 

so3 

0. 15 

Q  2.0 

di 

11.1 

or  19. 5 

hy  19.4 

ab  21.5 

mt 

3.2 

an  18. 1 

il 

1.7 

ap 

1.1 

Locality. 


Deer  Creek,  Yellow¬ 
stone  National 
Park. 


Lamar  River,  North 
Bison  Peak,  Yel¬ 
lowstone  National 
Park. 

Turkey  Creek,  Jeffer¬ 
son  County,  Colo¬ 
rado. 

Table  Mountain, 
Denver,  Colorado. 


Table  Mountain, 
Denver,  Colorado. 


Valmont,  Boulder 
County,  Colorado. 


Lane  and  Hayward 
Mine,  Silver  Bow 
Basin,  Alaska. 


Clover  Meadow, 
Tuolumne  County, 
California. 


Table  Mountain, 
Tuolumne  County, 
California. 


Malvern,  England. 


Swinyards  Hill, 
Malvern,  England. 


Hopital-Camfront, 
Brittany,  France. 


|  Cabezo  Felipe, 
Cartagena,  Spain. 


Huken,  Christiania 
Fjord,  Norway. 


Gebweiler,  Vogesen. 


Masmiinster,  Vogesen. 


Soterburg,  Nahethal, 
Rh.  Prussia. 


Analyst. 

Reference. 

Author’s  name. 

Remarks. 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

'  B.  U.  S.  G.  S.,  168, 
p.  97,  1900. 

Gabbro- 

porphvry. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill, 
p.  944,  1895. 

Shoshonite. 

Also  in  M.  U.  S. 
G.S., XXXII, 
p.  340,  1899. 

L.  G.  Eakins. 

W.  Cross, 

M.  U.  S.  G.  S., 
XXVII,  p.  310,  1896. 

Augite-mica- 

syenite. 

W.  F.  Hille- 
brand. 

W.  Cross, 

M.  U.  S.  G.  S., 
XXVII,  p.  306,  1896. 

Basalt. 

Late  flow. 

W.  F.  Hille- 
brand. 

W.  Cross, 

M.  U.  S  G.  S., 
XXVII,  p.  308,  1896. 

Basalt. 

Early  flow. 

L.  G.  Eakins. 

W.  Cross, 

M.  U.  S.  G.  S., 
XXVII,  p.  301,  1896. 

Dolerite. 

Near  kentallen- 
ose. 

W.  F.  Hille- 
brand. 

G.  F.  Becker, 

B.  U.  S.  G.  S.,  148, 
p.  233,  1897. 

Diorite. 

Not  fresh. 

G.  Steiger. 

F.  L.  Ransome, 

A.  J.  S.,  V, 
p.  363,  1898. 

Augite-latite. 

Also  in  B.  U.  S. 
G.  S.,  89,  p. 
58,  1898. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14 A.  R.  U.  S.G.S.,II, 
p.  491,  1894. 

Basalt.  (Aug¬ 
ite-latite, 

F.  L.  R.) 

Also  cf.  F.  L. 
Ransome,  A. 
J.  S.,  V,  p. 
363,  1898. 

J.  H.  Player. 

C.  Callaway, 

Q.  J.  G.  S.,  XLIX, 
p.  419,  1893. 

Diorite. 

One  decimal. 

J.  H.  Player. 

C.  Callaway, 

Q.  J.  G.  S.,  XLIX, 
p.  420,  1893. 

Diorite. 

One  decimal. 

' 

Not  stated. 

C.  Barrois, 

Guide  Exc.  VIII, 
Cong.  G.  Int.,  VII, 
p.  19,  1900. 

Kersantite. 

Near  pulaskose. 

A.  Osann. 

A.  Osann, 

Z.  D.  G.  G.,  XLIII, 
p.  719,  1891. 

Andesite 

L.  Schmelck. 

W.  C.  Brbgger, 

Q.  J.  G.  S.,  L, 
p.  33,  1894. 

Labrador- 

porphvrite. 

V.  Traumann. 

A.  Osann, 

Abh.  Sp.  K.  Els. -Loth. , 
III,  p.  117,  1887. 

Labrador- 

porphyrite. 

A.  Walther. 

A.  Osann, 

Abh.  Sp.K.Els.-Loth., 
Ill,  p.  125,  1887. 

Labrador- 

porphyry. 

‘Sum  low. 

Bottcher. 

K.  A.  Lossen, 

Jb.  Pr.  G-L.  A.,  X, 
p.  309,  1892. 

Olivine- 

weiselbergite. 

S03  for  S. 

270 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE — Continued. 
RANG  3.  ALKALICALCIC.  ANDASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

H20+  ;H20  — 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

33 

52.  25 

14.  93 

3.  50 

3.  70 

5.  84 

6.  33 

2.  86 

3.  76 

2.  68 

2.  62 

0.  62 

0.  62 

99.  92 

2.  725 

A2.  II 

.871 

.146 

.022 

.051 

.146 

.112 

.046 

.040 

.008 

.004 

34 

50.  31 

16.  72 

4. 19 

5.01 

6.  69 

7.  73 

2.  50 

2.53 

3.16 

0. 13 

0.  64 

99.  98 

2.  777 

A2.  II 

.839 

.164 

.026 

.070 

.167 

.137 

.040 

.026 

.008 

35 

51.80 

16.  65 

4.93 

2. 14 

6.90 

7.  35 

3.  68 

4.  05 

1.32 

0.  50 

0.  29 

99.61 

A3.  Ill 

.863 

.163 

.030 

.030 

.173 

.131 

.059 

.043 

.004 

36 

54. 55 

15.  44 

3.  48 

0.  80 

4.  41 

7.  85 

2.45 

4.  09 

3.75 

2. 16 

0.96 

0. 45 

100. 49 

2.  67 

A2.  II 

.909 

.152 

.022 

.011 

.110 

.140 

.040 

.043 

.012 

.003 

37 

51.53 

18.  28 

4.  89 

2.11 

1.69 

5. 10 

3.01 

4.  74 

6.  90 

1.33 

0.  46 

0.18 

100.  29 

2.554 

A2.  II 

.859 

.179 

.031 

.030 

.042 

.091 

.048 

.050 

.016 

.003 

.002 

38 

50.  98 

18.  94 

5.  82 

1.83 

0.  32 

6.  88 

3.  22 

4.  67 

4.01 

1.23 

0.  21 

98. 11 

2.548 

D2.  V 

.850 

.185 

.036 

.025 

.008 

.123 

.052 

.050 

.015 

.001 

39 

50.  08 

18.  87 

3.  48 

3.  49 

2. 14 

6.  70 

4. 10 

4.  58 

4. 17 

0.  26 

1.39 

0.  39 

0.  29 

100. 16 

2.651  ! 

Al.  I 

.835 

.185 

.022 

.049 

.054 

.120 

.066 

.049 

# 

.017 

.003 

.004 

40 

50.  52 

17.  98 

5.09 

5.90 

3.  36 

7. 95 

3.  60 

3.  70 

1.03 

trace 

1.31 

100. 44 

2.  855 

A3.  Ill 

.842 

.176 

.032 

.082 

.084 

.143 

.058 

.039 

l 

— 

.009 

41 

49.  75 

16.  72 

5.  70 

4.99 

3.89 

9.  69 

3. 08 

3.02 

2.18 

0. 18 

0.  72 

99.  92 

2.  857 

A2.  II 

.829 

.164 

.036 

.069 

.097 

.173 

.050 

.033 

.002 

.005 

42 

54.  56 

16.  49 

1.02 

5.  65 

8.  57 

7.  95 

2.07 

3.  35 

0. 15 

1.  10 

trace 

100.  91 

B2.  Ill 

.909 

.162 

.006 

.078 

.214 

.142 

.033 

.036 

.013 

— 

43 

54. 14 

16.42 

1.69 

5.  26 

8.  44 

8.  05 

2.20 

3.  34 

0.  56 

1.23 

trace 

101.33 

B2.  Ill 

.902 

.161 

.011 

.073 

.211 

.144 

.035 

.036 

.015 

— 

44 

56.  76 

16.  79 

2.07 

6.  95 

1.63 

6.01 

2.43 

4.  67 

2.44 

0.  47 

100.  22 

2.  470 

B3.  IV 

.946 

.165 

.013 

.097 

.041 

.107 

.039 

.050 

.003 

45 

56.  32 

18.17 

2.  23 

6.  47 

2.84 

5.33 

1.80 

4.18 

2. 15 

0.  34 

99.  83 

2.  520 

B3.  IV 

.939 

.178 

.014 

.090 

.071 

.095 

.029 

.045 

.002 

46 

58.  78 

16.97 

1.13 

2. 10 

1.46 

7.  27 

3.67 

4. 18 

3.60 

• 

0.  32 

0.17 

100.  09 

A3.  Ill 

.980 

.167 

.007 

.030 

.037 

.130 

.059 

.045 

.002 

.002 

47 

55.  69 

19.08 

4.  07 

3.26 

3.  41 

6.  87 

2.  89 

4.  41 

0. 17 

trace 

99.  85 

2.  717 

A3.  Ill 

.928 

.187 

.025 

.045 

.085 

.123 

.047 

.047 

— 

48 

52. 12 

18.  47 

3. 40 

4.  77 

5.11 

8.  71 

3.07 

3.29 

0.  46 

trace 

0.  25 

trace 

99.  65 

A3.  Ill 

.869 

.181 

.0?1 

.067 

.128 

.155 

.050 

.035 

— 

.002 

— 

49 

53.31 

17.34 

9.01 

2.00 

0.  73 

9.  06 

3.  42 

3.  35 

0. 14 

1.44 

99.  80 

2.686 

A3.  Ill 

.889 

.170 

.056 

.028 

.018 

.161 

.055 

.036 

.021 

15°  ^ 

DOSALANE— SHOSHONOSE. 


271 


ORDER  5.  PERFELIC.  GERM  AN  A  RE— Continued. 

SUBRANG  3.  SODIPOTASSIC.  SHOSHONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03 

0.21 

Q  1.7 
or  22.2 
ab  24. 1 
an  16.7 

di 

hy 

mt 

il 

ap 

8.7 

13.4 

5.1 

1.1 
1.4 

Breiten  brunnen , 
Querbachthal, 
Thuringerwald. 

G.  F.  Steffen. 

H.  Loretz, 

Jb.  Hr.  G.L- A.,  VIII, 

p.  112,  1888. 

Kersantite. 

S03  for  S. 

Not  fresh. 

S03 

trace 

Q  0.3 
or  14.5 
ab  21.0 
an  27. 2 

di 

hy 

nit 

il 

8.7 

17.2 

6.0 

1.2 

Querenberg, 
n.  Giessubel, 
Thiiringerwald. 

G.  F.  Steffen. 

H.  Loretz, 

Jb.  Pr.  G.  L-A.,  IX, 
p.  306,  1889. 

Melaphyre. 

or  23.9 
ab  22.5 
an  17.0 
ne  4.5 

di 

ol 

mt 

15.3 

7.2 

7.0 

Stengerts,  Spessart, 
Bavaria. 

H.  Stuber. 

E.  Goller, 

N.  J.  B.  B.,  VI, 
p.  566,  1889. 

Kersantite. 

S03 

Org 

0. 10 
trace 

Q  G.l 
or  23.9 
ab  21.0 
an  19.2 

di 

hy 

il 

hm 

ap 

13.2 

4.9 

1.8 

3.5 

1.1 

Gronig,  St.  Wendel, 
Harz  Mountains. 

Hesse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  266,  1892. 

Diorite- 

porphyrite. 

Not  fresh. 

S 

0. 07 

Q  4.0 
or  27. 8 
ab  25. 2 
an  22. 5 

hy 

mt 

il 

hm 

ap 

4.2 

3.2 

2.3 
2.7 
1.1 

Mondhalde, 

Kaiserstuhl, 

Baden. 

F.  Graeff. 

F.  Graeff, 

Mt.  Bad.  G.  L-A., 

IV. 

Mondhaldeite. 

Cl 

S 

trace 

trace 

Q  2.0 
or  27. 8 
ab  27.2 
an  20. 3 

di 

wo 

mt 

il 

hm 

1.8 
4.8 
2.3 
2. 2 
15 

Fohrenberg, 

Kaiserstuhl, 

Baden. 

K.  Gruss. 

K.  Gruss, 

Mt.  Bad.  G.  L-A., 

IV,  p.  97,  1900. 

Mondhaldeite. 

Sum  low. 

Cl 

s 

0. 18 

0.04 

or  27.2 
ab  23. 1 
an  19. 5 
ne  6.2 

di 

ol 

mt 

il 

ap 

9.0 

1.7 

5.1 

2.6 

1.0 

Mondhalde, 

Kaiserstuhl, 

Baden. 

F.  Graeff. 

F.  Graeff, 
cf.  N.  J.,  1890,  II, 
p.  65. 

Tephrite. 

Border  of  dike. 
Cf.  No.  83,  an- 
dose. 

or  21.7 
ab  28.8 
an  22. 0 
ne  0.3 

di 

ol 

mt 

ap 

7.3 

8.4 

7.4 
3.0 

Rongstock, 

Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XV, 
p.  487,  1895. 

Dolerite 

(essexite). 

Alkalies  and 
Ti02?  Cf.  No 
14,  essexose. 

or  18.3 
ab  25.2 
an  22. 5 
ne  0.6 

di 

ol 

mt 

ap 

16.9 

4.3 

8.4 
1.7 

Eichberg, 
n.  Habendorf, 
Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XIV, 
p.  112,  1894. 

Leucite- 

tephrite. 

or  20.0 
ab  17.3 
an  25. 9 

di 

hy 

ol 

mt 

il 

11.0 

20.3 

2.1 

1.4 

2.0 

Radicofani,  Tuscany. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S„  IX, 
p.  52,  1900. 

Andesite  (gray) 

Dried  at  110°. 
Sum  high. 

or  20.0 
ab  18.3 
an  25.3 

di 

hy 

oi 

mt 

il 

9.8 

21.2 

1.0 

2.6 

2.3 

Castle  Gate, 
Radicofani, 

Tuscany. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  IX, 
p.  52,  1900. 

i 

Andesite  (black) 

Dried  at  110°. 
Sum  high. 

■Q  7.0 
or  27.8 
ab  20.4 
an  21. 1 

di  4. 5 
hy  13.0 
mt  3. 0 
ap  1. 1 

Sassara, 

n.  Lake  Bolsena, 
Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Ak., 

1888,  p.  96. 

Olivine- 

trachyte. 

Alkalies  low? 
Also  in  N.  J.  B. 
B.,  VI,  p.  7y 
1889. 

Q  9.5 
or  25. 0 
ab  15. 2 
an  26. 4 
C  0.9 

hy 

mt 

17.1 

3.2 

Mont’  Alfina, 
n.  Lake  Bolsena, 
Italy. 

. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Ak., 

1888,  p.  96. 

Olivine- 

trachyte. 

Alkalies  low? 
Also  in  N.  J.  B. 
B.,  VI,  p.  7, 
1889. 

so3 

Cl 

0.44 

trace 

Q  6.7 
or  25. 0 
ab  30. 9 
an  17. 5 

di 

mt 

ap 

13.6 

1.6 

0.8 

Bagnaia, 
n.  Viterbo, 

Italy. 

L.  Ricciardi. 

A.  Verri, 

B.  Soc.  G.  Ital., 

VIII,  p.  403,  1889. 

Trachyte. 

Alkalies? 

Q  2.6 
or  26. 1 
ab  24.6 
an  25.9 

di 

hy 

mt 

6.8 

7.3 

5.8 

Monte  Santa  Croce, 
Rocca  Monfina, 
Italy. 

II.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  V, 
p.  252,  1897. 

Blotite- 

vulsinite. 

Dried  at  110°. 

so3 

trace 

or  19.5 
ab  25.2 
an  26. 7 
ne  0.6 

di 

ol 

mt 

13.3 

9.1 

4.9 

Tilba  Tilba  Lake, 
South  Coast, 

New  South  Wales. 

J.  C.  H.  Min- 
gaye. 

W.  Anderson, 

Rec.  G.  S.  N.  S.  W., 
II,  p.  153,  1902. 

Hornblende- 

andesite. 

Q  5.1 
or  20.0 
ab  28. 8 
an  22.0 

di 

wo 

mt 

hm 

3.9 

7.4 

6.5 
4.  5 

Port  Resolution, 

Tanna  Island, 

New  Hebrides, 
Pacific  Ocean. 

A.  Liversidge. 

A.  Liversidge, 

Jour.  R.  Soc.  N.  S.W., 
XX,  p.  237,  1887. 

Glassy  lava. 

A1203  and  Fe203 
transposed. 
MgO  low? 

MnO  high. 

272 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE— Continued. 

RANG  3.  ALKALICALCIC.  ANDASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na,0 

k2o 

H20  + 

H,0 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

46.  61 

15.34 

8.40 

8. 14 

5.27 

9.  27 

3.  04 

1.41 

1.41 

0.  55 

0.  39 

99.  83 

A2.  II 

.  777 

.150 

.052 

.113 

.132 

' .  166 

.049 

.015 

.007 

.006 

2 

52.12 

16.  35 

3.  68 

6.  02 

4. 14 

7.25 

3.  65 

2.  34 

0.  88 

0.  25 

0.  07 

2. 10 

0.  89 

0. 17 

0.04 

100.  33 

Al.  I 

.869 

.160 

.023 

.084 

.104 

.129 

.059 

.025 

.026 

.006 

.002 

— 

3 

55.51 

16.51 

1.68 

4.57 

6.  73 

n  o 

o.  16 

3. 19 

2. 46 

1.53 

0.91 

0.17 

0. 11 

0.02 

100. 12 

Al.  I 

.915 

.161 

.011 

.064 

.168 

.120 

.051 

.026 

.011 

.001 

.002 

_ 

4 

51.  82 

17.06 

1.97 

8.  60 

4.87 

8.  59 

3.  44 

1.  77 

0.  20 

0.11 

2. 15 

trace 

100.  58 

A3.  Ill 

.864 

.  167 

.012 

.120 

.122 

.153 

.  056 

.019 

.026 

— 

5 

47.28 

20.  22 

3.  66 

8.  89 

3.  17 

7.  09 

3.94 

2.  it 

2.  73 

0.  68 

0.  77 

100. 59 

A3.  Ill 

.788 

.198 

.023 

.124 

.079 

.127 

.063 

.023 

.005 

.011 

6 

55.34 

16.  37 

0.  77 

7.54 

5.  05 

7.  51 

4.  06 

2.  03 

0.  58 

trace 

99.  65 

A3.  Ill 

.922 

.160 

.  005 

.105 

.126 

.134 

.065 

.022 

7 

50.  86 

15.  72 

9.77 

2.  48 

3.55 

10.  52 

3.  89 

0.  90 

2.  53 

100.  22 

A3.  Ill 

.848 

.154 

.061 

.035 

.089 

.187 

.063 

.010 

8 

52.  48 

15.47 

5. 14 

9.25 

2.  55 

7. 27 

3.  26 

1.  75 

1.24 

1.26 

0.  29 

0.  51 

none 

100.47 

2.  83 

A2.  II 

.875 

.151 

.032 

.129 

. 

.064 

.129 

.052 

.019 

.016 

.002 

.007 

— 

9 

54.  56 

17.58 

4.30 

4.  98 

2.  86 

6.  00 

4.  43 

2.  70 

0.  38 

0.  02 

1.34 

0.  60 

0.  06 

0.  27 

100. 16 

Al.  I 

.909 

.172 

.027 

.069 

.072 

.107 

.071 

.029 

.017 

.004 

.001 

.002 

10 

53.  48 

19.  35 

2.  37 

4.  90 

3.  67 

7. 55 

4.  07 

1.41 

0.  80 

0.16 

0.  08 

1.07 

0.  62 

0.06 

0. 19 

99.  89 

Al.  I 

.891 

.190 

.015 

.  068 

.092 

.135 

.066 

.015 

.013 

.004 

.001 

.001 

11 

50.  73 

19.  99 

3.  20 

4.  66 

3.48 

8.  55 

4.03 

1.89 

0.  66 

0.11 

1.59 

0.81 

0.05 

0.  27 

100. 13 

Al.  I 

.846 

.196 

.020 

.065 

.087 

.  153 

.  065 

.020 

.020 

.006 

.001 

.002 

12 

56.  80 

18.  30 

1.64 

5.58 

3.  63 

5.31 

4.  35 

3.  28 

0.53 

0.  46 

trace 

trace 

0. 05 

99.  93 

2.  83 

A2.  II 

.947 

.179 

.010 

.078 

.091 

.095 

.070 

.035 

.006 

— 

13 

55. 13 

20.  27 

1.52 

4.  29 

1.80 

7.  05 

4.  31 

2.  84 

0.  95 

0. 14 

0.  26 

0.  74 

0.  40 

0.  13 

0.  06 

100.  00 

Al.  I 

.919 

.198 

.009 

.060 

.045 

.126 

.069 

.030 

.009 

.003 

.002 

— 

14 

56.41 

17.  62 

1.24 

3. 55 

3.97 

8.  66 

3.  35 

2.  61 

0.  76 

0. 14 

0. 68 

0. 49 

0.  08 

0.  09 

99.  70 

Al.  I 

.940 

.174 

-.007 

.050 

.099 

.154 

.054 

.027 

.008 

.003 

.001 

.001 

15 

57.  78 

16.  28 

1.02 

4.  92 

4.  60 

6.  65 

3.  25 

2.  22 

0.  92 

0.  34 

0. 15 

1.07 

0.  30 

0. 15 

0. 12 

99.  88 

Al.  I 

.963 

.160 

.  006 

.068 

.115 

.119 

.052 

.023 

• 

.013 

.002 

.002 

.001 

16 

58.  05 

18.  00 

2.  49 

4.56 

3.  55 

6. 17 

3.  64 

2. 18 

0.  86 

1.05 

0. 17 

none 

100.79 

Al.  I 

.968 

.176 

.016 

.063 

.089 

.110 

.  059 

.022 

.013 

.001 

— 

17 

57.64 

18.  43 

3.  63 

2.  84 

3.  32 

5.  49 

4.  03 

3.  33 

0.  51 

0.  77 

0.  34 

0.10 

100. 43 

A2.  II 

.961 

.181 

.023 

.040 

.083 

.098 

.065 

.035 

.010 

.002 

.001 

DOSALANE 


AN  DOSE. 


273 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  ANDOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  8. 3 
ab  25. 7 
an  23. 9 

di 

hv 

ol 

rat 

il 

18.1 

1.0 

7.2 

12.0 

1.1 

Coldbrook  Marsh, 

St.  John,  New 
Brunswick. 

W.  D.  Matthew. 

W.  D.  Matthew, 

Tr.  N.  Y.  Ac.  Sei., 
XIV,  p.  214,  1895. 

Quartz-diabase. 

Cl 

F 

FeSa 

NiO 

0.09 

0.03 

0.24 

trace 

Q  2.4 
or  13.9 
ab  30.  9 
an  21. 1 

di 

hy 

rat 

il 

ap 

7.4 

11.5 

5.3 

3.9 

2.0 

Mount  Ascutney, 
Vermont. 

W.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  69,  1897. 

Diorite. 

Q  2.3 
or  14. 5 
ab  26. 7 
an  23. 4 

di 

hy 

rat 

il 

8.1 

18.4 

2.6 

1.7 

South  Leverett, 
Massachusetts. 

L.  G.  Eakins. 

B.  K.  Emerson, 

M.  U.  S.  G.  S.,XXIX, 
p.  336,  1898. 

Tonalite. 

or  10.6 
ab  29. 3 
an  25. 6 

di 

hy 

ol 

mt 

il 

14.2 

8.0 

5.8 

2.8 
4.0 

Peach’s  Neck,  Mar¬ 
blehead,  Massachu¬ 
setts. 

H.  S.  Washing¬ 
ton. 

IL  S.  Washington, 

J.  G.,  VII,  p.  60,1899. 

Diorite. 

or  12.8 
ab  27. 8 
an  31. 1 
ne  2.8 

ol 

mt 

ap 

15.9 

5.3 

1.6 

Medford,  Massachu¬ 
setts. 

G.  P.  Merrill. 

G.  P.  Merrill, 

B.  G.  S.  A.,  VII, 
p.  353,  1896. 

Diabase. 

or  12.2 
ab  34. 1 
an  20. 3 

di 

hy 

ol 

mt 

14.0 

11.4 

5.3 

1.2 

Montrose  Point,  Cort- 

landt,  New  York. 

* 

M.  D.  Munn. 

J.  D.  Dana, 

A.  J.  S.,  XXII, 
p.  104,  1881. 

Norite. 

Also  cf.  G.  H. 
Williams,  A.  J. 
S.,  XXXIII, 
p.  193, 1887. 

Q  3.2 
or  5. 6 
ab  33. 0 
an  22. 5 

di 

wo 

mt 

hm 

19.3 

2.0 

8.1 

4.2 

Near  Baptism  River, 
Minnesota. 

Dodge  and  Sid- 
ener. 

M.  E.  Wadsworth, 

B.  G.  Nh.  S.  Minn., 

2,  p.  79,  1887. 

Gabbro. 

Near  beer- 
bach  ose. 

SrO 

none 

Q  5.6 
or  10.6 
ab  27.  2 
an  22. 5 

di 

hy 

mt 

il 

11.4 

11.6 

7.4 

2.4 

Duluth,  Minnesota. 

A.  N.  Winchell. 

A.  N.  Winched, 

A.  G.,  XXVI, 
p.  293,  1900. 

Orthoclase- 

gabbro. 

SrO 

LioO 

0.08 

trace 

Q  2.7 
or  16.1 
ab  37. 2 
an  20. 0 

di 

hy 

mt 

il 

ap 

6.3 

8.1 

1.2 

2.6 

1.2 

Big  Timber  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  143,  1897. 

Diorite- 

porphyrite. 

SrO 

0. 11 

Q  2.5 
or  8.3 
ab  34.6 
an  30. 3 

di 

hy 

mt 

il 

ap 

3.2 
13.0 

3.5 

2.0 

1.2 

Sweet  Grass  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hide- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  143,  1897. 

Quartz-diorite. 

SrO 

LioO 

0. 11 
trace 

or  11.1 
ab  34. 1 
an  30. 9 

di 

hv 

ol 

mt 

il 

ap 

5.0 

5.3 

3.1 

4.6 

3.1 

1.9 

Big  Timber  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hide- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  144,  1897. 

Diorite. 

LioO 

trace 

or  19.5 
ab  36. 7 
an  20.  6 

di 

hy 

mt 

il 

4.8 

14.9 

2.3 

0.9 

Robinson, 

Castle  Mountains, 
Montana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  90,  1896. 

Diorite. 

SrO 

Li«0 

0.11 

trace 

Q  0.7 
or  16. 7 
ab  36.2 
an  27. 5 

di 

hy 

mt 

il 

6.2 

6.9 

2.1 

1.4 

Carpenter  Creek, 

Little  Belt  Moun¬ 
tains,  Montana. 

W.  F.  Hide- 
brand. 

L.  V.  Pirsson, 

20  A.  R.  U.  S.  G.  S., 
Ill,  p.  490,  1900. 

Diorite. 

- 

Cl 

SrO 

0. 07 

0.08 

Q  4.9 
or  15.0 
ab  28. 3 
an  25.9 

di 

hy 

mt 

il 

ap 

12.0 

8.7 

1.6 

1.2 

1.0 

Red  Mountains, 
n.  Butte, 

Montana. 

II.  N.  Stokes. 

W.  H.  Weed, 

J.  G.,  VII,  p.  739,  1899. 

Diorite. 

S 

NiO 

SrO 

0.02 

0.02 

0. 07 

Q.  8.7 
or  12.8 
ab  27.2 
an  23. 6 

di  7. 9 
hy  14. 1 
mt  1. 4 
il  2.0 

Croesus  Mine, 

Hailey,  Idaho. 

W.  F.  Hide- 
brand. 

W.  Lindgren, 

20  A.  R.  U.  S.  G.  S., 
Ill,  p.  81,  1900. 

Gabbro. 

Near  tonalose. 

so3 

Cl 

Li20 

0. 07 

trace 

none 

Q*  8.9 
or  12.8 
ab  30. 9 
an  26. 1 

di 

hy 

mt 

il 

3.7 

9.6 

3.7 
2.0 

Electric  Peak, 

Yell.  Nat.  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  627,  1891. 

Pvroxene- 

mica-diorite. 

Cl 

trace 

Q  5.5 
or  19.5 
ab  34. 1 
an  22. 5 

di 

hy 

mt 

il 

3.9 

7.3 

5.3 
1.5 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  s.  G.  S., 
XXXII,  p.  261,  1899. 

Diorite. 

14128— No.  14—03 - 18 


274 


CHEMICAL  ANALYSES  OE  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE — -Continued. 


RAXG  3.  ALKALICALCIC.  ANDASE — Continued. 


No. 

SiO, 

AM  >3 

Fe.XLj 

FeO 

MgO 

CaO 

Na2G 

k2o 

h2o+ 

H20— 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

18 

57.  38 

16.  86 

2. 49 

5. 17 

5.  51 

7.32 

3.33 

1.45 

0.  42 

trace 

trace 

trace 

100.  70 

A2.  II 

.956 

.165 

.016 

.072 

.138 

.131 

.054 

.015 

— 

— 

19 

57.  32 

17.  29 

3.  89 

3.  03 

3.  56 

5.81 

3.  89 

3.  04 

0.  30 

0.  33 

0.62 

0. 50 

0.  06 

99.  74 

A2.  II 

.  955 

.170 

.024 

.042 

.089 

.104 

.063 

.032 

.008 

.003 

.001 

20 

57.  26 

19.  40 

2.  49 

3.  29 

2.  57 

5.  68 

4.21 

2.  95 

0.  86 

0.  76 

0.51 

0. 16 

100. 14 

A2.  II 

.954 

.190 

.016 

.046 

.064 

.101 

.068 

.039 

.010 

.003 

.002 

21 

57. 17 

17.  25 

2.  48 

4. 31 

4.  83 

6.61 

3.  44 

2.  03 

1.20 

1.03 

0.05 

none 

100.  40 

A2.  II 

.953 

.169 

.015 

.060 

.121 

.118 

.  055 

.  022 

.013 

— 

— 

22 

56.  47 

15.  33 

2.  54 

4.  53 

5.  08 

6.  93 

3.81 

1.  66 

1.  65 

0.  99 

0.  54 

0. 18 

99. 71  ' 

A2.  II 

.941 

.150 

.015 

.062 

.127 

.123 

.061 

.018 

.012 

.004 

.003 

23 

56.21 

18.  24 

3.26 

3.  69 

3.  38 

5.91 

4. 15 

3.02 

0.  78 

0.  88 

0.64 

0.17 

100.  33 

A2.  II 

.937 

.179 

.020 

051 

.085 

.106 

.067 

.032 

.011 

.004 

.002 

24 

55.  93 

18.32 

2.  39 

4.91 

3.97 

6. 17 

4.  29 

2.  62 

0.22 

0.81 

0.  56 

0. 14 

100. 33 

A2.  II 

.932 

.180 

.015 

.068 

.099 

.110 

.069 

.028 

.010 

.004 

.002 

25 

55.92 

17.  70 

3. 16 

4.  48 

4.34 

5.  90 

4.08 

2.  24 

1.42 

. 

0.94 

0. 18 

trace 

100.  45 

Al.  I 

.932 

.174 

.020 

.062 

.109 

.105 

.066. 

.025 

.012 

.001 

26 

53.  89 

18.  81 

4.  92 

2.81 

3.  29 

5.  42 

3.65 

2.98 

2.  99 

0.  49 

0.  52 

0. 17 

■  99.94 

A2.  II 

.898 

.184 

.031 

.039 

.082 

.097 

.  059 

.032 

.006 

.004 

.002 

27 

53.  75 

20.  75 

4.50 

3.  53 

3.  76 

7. 18 

4. 16 

1.37 

1.  55 

none 

none 

0. 15 

trace 

100. 70 

A2.  II 

.896 

.203 

.028 

.049 

.094 

.128 

.067 

.015 

— 

.001 

— 

28 

53.  71 

18.00 

3.99 

4.  05 

5.19 

6.  88 

3.50 

3.10 

0.55 

0.  74 

0.38 

0.  24 

100. 33 

A2.  II 

.895 

.176 

.025 

.056 

.130 

.123 

.  056 

.033 

.009 

.003 

.003 

29 

53.57 

17.  78 

3. 19 

4.  93 

4. 36 

6.  22 

4.04 

3.04 

0.  80 

0.  27 

none 

0.  89 

0.  44 

0.  07 

0.  21 

99.91 

Al.  I 

.893 

.174 

.020 

.068 

.109 

.110 

.064 

.032 

.011 

.003 

.001 

.002 

30 

52.  37 

16.57 

6.  34 

2.  35 

5.  27 

8.54 

2.99 

2.45 

1.04 

1.18 

0.  73 

0.  31 

0.07 

100.  33 

A2.  II 

.873 

.162 

.039 

.033 

.132 

.152 

.048 

.026 

.009 

.002 

.001 

31 

52. 18 

18. 19 

3.  31 

4.36 

4.69 

6.  51 

4.  58 

1.88 

2.00 

0.  75 

none 

0.99 

0.  29 

0. 14 

0.  11 

100. 04 

Al.  I 

.870 

.178 

.021 

.061 

.117 

.116 

.074 

.020 

.012 

.002 

.002 

.001 

32 

52.  09 

17.84 

4.  27 

4.  56 

5.  33 

8.  03 

3.39 

1.98 

1.  77 

0.  39 

0.  27 

0. 14 

100.  06 

A2.  II 

.868 

.175 

.027 

.081 

.144 

.143 

.055 

.021 

.005 

.002 

.002 

33 

51.  70 

17.90 

7.  24 

1.00 

2.  77 

6.  94 

4. 17 

1.62 

1. 15 

3.17 

0.  41 

trace 

100.  23 

Al.  I 

.862 

.175 

.045 

.014 

.069 

.124 

.068 

.017 

.039 

.003 

— 

34 

50.  99 

15.62 

8.  47 

1.43 

5.  23 

6.53 

3.  39 

3.05 

2.  48 

1.39 

0.  67 

0.53 

trace 

99.  85 

A2.  II 

.850 

.153 

.053 

.019 

.131 

.116 

.055 

.032 

.008 

.003 

— - 

DOSALANE - AN  DOSE. 


275 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  ANDOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

Cl 

LEO 

0.21 

0.17 

0.39 

Q  7.3 
or  8. 3 
ab  28. 3 
an  26. 7 

di 

to¬ 
rn  t 

7.9 

17.3 

3.7 

Electric  Peak, 

Yell.  Nat.  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  627,  1891. 

Pyroxene- 

porphyrite. 

Li20  high. 

NiO 

0.10 

Q  7.1 
or  17.8 
ab  33.0 
an  21.0 

di 
to¬ 
rn  t 
il 
ap 

3.8 

8.4 

5.6 

1.2 

1.1 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Nat.  Park. 

W.  H.  Melville. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  261,  1899. 

Monzonite. 

Q  2.0 
or  21.7 
ab  35.6 
an  23. 1 

di 

hy 

mt 

il 

ap 

2.1 

8.03 

3.7 

1.5 

1.1 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  261,  1899. 

Diorite. 

Facies  of  gab¬ 
bro. 

so3 

Cl 

LioO 

trace 

trace 

trace 

Q  7. 6 
or  12.2 
ab  28.8 
an  25. 6 

di 

hy 

mt 

il 

5.9 
13.6 
3. 5 
1.8 

Sepulchre  Mountain, 
Yell.  Nat.  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  648,  1891. 

Pyroxene- 

andesite. 

* 

Q  6.8 
or  10.0 
ab  32.0 
an  22.5 

di 

by 

mt 

il 

ap 

6.8 

14.0 

3.5 

1.8 

1.2 

Near  Dunraven  Peak, 
Yell.  Nat.  Park. 

F.  A.  Gooch. 

.T.  P.  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  135,  1897. 

Pyroxene- 

andesite. 

Q  3.8 
or  17.8 
ab  35. 1 
an  22. 5 

di 

hy 

mt 

il 

ap 

3.0 

9.7 

4.6 

1.7 
1.3 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  260,  1899. 

Orthoclase- 

gabbro- 

diorite. 

Q  1.6 
or  15.6 
ab  36. 2 
an  23. 1 

di 

Li¬ 

mit 

il 

ap 

3.5 

13.9 

3.5 

1.5 
1.3 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 

XXXII,  p.  260,  1899. 

Orthoclase- 

gabbro- 

diorite. 

so3 

Cl 

Li20 

trace 

none 

0.09 

Q.  3.5 
or  13.9 
ab  34. 6 
an  23. 1 

di 

by 

mt 

il 

5.0 

12.0 

4.6 

1.7 

Sepulchre  Mountain, 
Yell.  Nat.  Park. 

J.E.  Whitfield. 

J.  P.  Iddings, 

12  A.  R.  U.  S.  G.  S., 

I,  p.  648,  1891. 

Hornblende- 

andesite. 

Q  4.9 
or  17.8 
ab  30. 9. 
an  25. 9 

hy 

mt 

il 

ap 

8.4 

1.4 
4.8 
1.2 

Indian  Peak, 

Crandall  Basin, 

Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  260, 1899. 

Basalt-glass. 

In  breccia. 

S03 

Cl 

LEO 

trace 

none 

trace 

Q  2.4 
or  8.3 
ab  35. 1 
an  33. 6 

di 

by 

mt 

1.6 

11.4 

6.5 

Mount  Washburn, 

Yell.  Nat.  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

B.  U.  S.  G.  S,  148, 
p.  136,  1897. 

Basalt. 

or  18.3 
ab  29. 3 
an  24. 2 

di 

hy 

mt 

8.0 

12.0 

7.2 

Hurricane  Ridge, 
Crandall  Basin, 

Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  260, 1899. 

Mica-gabbro. 

Cr,03 

NiO 

SrO 

Li.20 

none 

none 

0.13 

trace 

or  17.8 
ab  33. 5 
an  21.  7 

di 

by 

ol 

mt 

il 

7.0 

8.6 

2.7 

4.6 

1.7 

Beam’s  Hill, 

Sunlight  Valley, 
Yell.  Nat.  Park. 

H.  N.  Stokes. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  95,  1900. 

Gabbro. 

NiO 

0. 12 

Q  3.4 
or  14.5 
ab  25. 2 
an  24. 5 

di 

by 

mt 

il 

hm 

13.9 

6.8 

5.6 

1.4 

2.4 

Stinkingwater 

Canyon, 

Yell.  Nat.  Park. 

W.  H.  Melville. 

J,  P.  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  135,  1897. 

Basalt. 

Cl 

s 

NiO 

SrO 

Li20 

trace 

none 

trace 

0.06 

trace 

or  11.1 
ab  38. 8 
an  23.4 

di 

hy 

ol 

mt 

il 

7.2 

3.8 

5. 8 

4.9 
1.8 

Shoshone  Canyon, 
Yell.  Nat.  Park. 

W.  F.  Hille- 
brand. 

Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  96,  1900. 

Diabase. 

or  11.  7 
ab  28. 8 
an  27. 5 

di 

hy 

ol 

mt 

il 

10.0 
11.0 
3.7 
6. 3 
0.8 

Timber  Creek, 
Crandall  Basin, 

Yell.  Nat,  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  260,  1899. 

Basalt. 

so3 

LioO 

Iron 

0.32 

0. 03 

1.81 

Q  5.0 
or  9. 6 
ab  35. 6 
an  27. 8 

hy 

il 

hm 

Pf 

ir 

6.9 
2. 2 
7.2 
3.5 
1.8 

Yellowstone  Canyon, 
Yell.  Nat,  Park. 

J.E.  Whitfield. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  135,  1897. 

Basalt. 

Contains  metal¬ 
lic  iron;  de¬ 
rived  from 
mortar? 

NiO 

0. 07 

Q  1.2 
or  18.3 
ab  28. 8 
an  18. 1 

di 

hy 

mt 

il 

hm 

ap 

8.8 

9.0 

2.6 

1.2 

6.7 

1.1 

Stinkingwater 

Canyon, 

Yell.  Nat.  Park. 

W.H.  Melville. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  340,  1899. 

Hornblende- 

basalt? 

Near  sho- 
shonose. 

276 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE— Continued. 


RANG  3.  ALKALICALCIC.  ANDASE — Continued. 


No. 

Si02 

A12Os 

Fe,G:i 

FeO 

MgO 

CaO 

Na.20 

K20 

h2o+ 

H20— 

co2 

TiG2 

FA 

MnO 

BaO 

Sum 

Sp.  gr. 

35 

56. 19 

16. 12 

4.  92 

4.43 

4.  60 

7.  00 

2.  96 

2.37 

1.03 

0.  27 

trace 

99.  91 

2.  742 

A3.  Ill 

.937 

.158 

.031 

.061 

.115 

.125 

.048 

.025 

.002 

— 

36 

56.  62 

16.  74 

4.  94 

3.  27 

4.08 

7.  39 

3.50 

1.97 

0.  92 

1.15 

trace 

0. 15 

100.  73 

A3.  Ill 

.944 

.164 

.030 

.046 

.102 

.132 

.  056 

.021 

— 

.002 

37 

57.42 

18.  48 

3.  74 

2. 10 

1. 71 

6.84 

4.52 

3.  71 

0.  28 

0.  08 

none 

0.  86 

0.  36 

0.  09 

0. 15 

100.  45 

2.  767 

Al.  I 

.957 

.181 

.023 

.030 

.043 

.122 

.072 

.039 

.011 

.003 

.001 

.002 

26° 

38 

55.  65 

17.04 

2.  81 

5.17 

3.  42 

6.  82 

3.  27 

2.  29 

1.49 

0.46 

0.  90 

0.37 

0.  20 

0.  08 

100. 02 

2.  783 

Al.  I 

.928 

.167 

.017 

.072 

.086 

.121 

.053 

.024 

.011 

.003 

.003 

.001 

22° 

39 

52.  97 

18.  31 

1.86 

6.  73 

3.  04 

6.51 

3.  74 

3.35 

0.31 

0.44 

1.04 

0.  81 

0.  09 

0. 18 

99.57 

Al.  I 

.883 

.179 

.012 

.093 

.  076 

.116 

.060 

.  035 

.013 

.006 

.001 

.001 

40 

47.32 

16.  71 

6.  92 

5.94 

5.  69 

8.51 

2.  70 

2.02 

1.04 

0.  24 

none 

1.50 

0.  96 

0.  08 

0.  07 

99.  95 

2.  949 

Al.  I 

.789 

.  164 

.043 

.082 

.142 

.151 

.043 

.<fel‘ 

.019 

.007 

.001 

.001 

26.5° 

41 

48.  76 

15.89 

6.  04 

4.  56 

5.98 

8. 15 

3.  43 

2.  93 

1.48 

0.  40 

1.  65 

0.  60 

0. 13 

0. 17 

100.  23 

Al.  I 

.813 

.155 

.037 

.063 

.150 

.145 

.  055 

.031 

.021 

.004 

.002 

.001 

42 

52.  38 

18.  79 

2.  88 

4.  90 

4.91 

7.  70 

3.  99 

1.  76 

0.  53 

1.22 

0.  56 

0. 18 

0.11 

99.91 

Al.  I 

.873 

.174 

.018 

.068 

.123 

.137 

.064 

.019 

.015 

.004 

.003 

.001 

43 

52.37 

17.01 

1.44 

5.  89 

6.  86 

7.  59 

3.51 

1.59 

1.29 

0.  37 

1.60 

0.  32 

0.  06 

99.  90 

A2.  II 

.873 

.  167 

.009 

.082 

.172 

.135 

.056 

.017 

.020 

.002 

— — 

44 

52.  27 

17.  68 

2.51 

5.00 

6.  05 

8.  39 

4. 19 

1.58 

0.  82 

trace 

1.49 

0.  23 

0.  06 

100.  27 

A2.  II 

.871 

.173 

.015 

..070 

.151 

.150 

.068 

.017 

.018 

.003 

— 

45 

51.  57 

17.  72 

6.  24 

1.  78 

4.91 

8.  82 

3.  59 

1.99 

0.  64 

0.  58 

1.43 

0.  45 

0. 16 

99.88 

A2.  II 

.860 

.174 

.039 

.025 

.123 

.157 

.058 

.021 

.017 

.006 

.001 

46 

56. 63 

16.  81 

3.  62 

3.  44 

4.  23 

7.53 

3.  08 

2.24 

0.51 

0.  80 

none 

0.  67 

0. 16 

0.  23 

0.  09 

100. 14 

Al.  I 

.944 

.165 

.023 

.048 

.106 

.134 

.050 

.024 

.008 

.001 

.003 

.001 

47 

56.  07 

19.06 

5.  39 

0.  92 

2. 12 

7.  70 

4.  52 

1.24 

0.  99 

1.24 

0. 16 

0.  23 

99.64 

A2.  II 

.935 

.187 

.034 

.011 

.053 

.138 

.073 

.013 

.015 

.001 

.003 

48 

56.  03 

18.  31 

3.47 

4.  42 

3.  64 

7.43 

3.  60 

1. 18 

0.31 

0. 12 

none 

1.24 

0. 13 

0. 11 

trace 

99.  99 

Al.  I 

.934 

.180 

.022 

.061 

.091 

.133 

.058 

.013 

.015 

.001 

.002 

— 

49 

51.54 

20.  31 

4.  65 

3.56 

3. 16 

9.55 

4.29 

2. 47 

0.  34 

0.  32 

0.  57 

0.  32 

101.  07 

B2.  Ill 

.859 

.199 

.029 

.049 

.079 

.171 

.069 

.026 

.004 

.004 

.005 

50 

52.  99 

16.71 

3.  80 

3.55 

6.95 

8.49 

3.  56 

1.29 

0.  59 

0.18 

none 

1.18 

0. 42 

trace 

0.  07 

99.  92 

Al.  I 

.883 

.164 

.024 

.050 

.174 

.151 

.057 

.014 

.015 

.003 

— 

.001 

51 

57. 37 

15.  66 

2.  06 

. 

4.  46 

8.  84 

4.94 

3.05 

1.51 

0.  61 

0.12 

0.60 

0.  02 

0.  27 

99.  92 

2.  830 

A 2.  II 

.956 

.153 

.013 

.062 

.221 

.088 

.049 

.016 

.007 

____ 

.004 

DOSALANE - ANDOSE. 


277 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 

SUBRANG  4.  DOSODIC.  ANDOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

• 

Cl 

0.02 

Q 

8.6 

di 

9.0 

or 

13.9 

hy 

11.2 

ab 

25. 2 

mt 

7.2 

an 

23.6 

SrO 

trace 

Q 

8.1 

di 

9.9 

or 

11.7 

hy 

8.3 

ab 

29.4 

mt 

7.0 

an 

24.2 

so3 

none 

Q 

4.0 

di 

8.7 

Cl 

0. 03 

or 

21.7 

mt 

5.  3 

SrO 

0. 08 

ab 

37.7 

il 

1.5 

Li20 

trace 

an 

20.0 

ap 

1.0 

S03 

none 

Q 

8.1 

di 

4.8 

NiO 

none 

or 

13.3 

hy 

12.0 

SrO 

0.  05 

ab 

27.8 

mt 

3.9 

LioO 

trace 

an 

25.0 

il 

1.7 

ap 

1.0 

ZrOo 

0. 05 

or 

19.5 

di 

3.2 

SrO 

0.14 

ab 

31.4 

hy 

12.0 

an 

23.4 

ol 

2.4 

mt 

2.8 

il 

1.8 

ap 

1.8 

so3 

0. 19 

Q 

0.7 

di 

6.8 

Cl 

trace 

or 

11.7 

hy 

13.7 

SrO 

0.06 

ab 

22.5 

mt 

10.0 

LioO 

trace 

an 

27.8 

il 

3.0 

ap 

2.2 

ZrOo 

none 

or 

17.2 

di 

14.1 

SrO" 

0. 06 

ab 

26.7 

ol 

6.5 

LioO 

none 

an 

19.2 

mt 

8.6 

ne 

1.1 

il 

3.1 

ap 

1.3 

or 

10.6 

di 

5.4 

ab 

33.5 

hy 

12.3 

an 

28.1 

Ol 

1.6 

mt 

4.2 

il 

2.3 

ap 

1.3 

Cl 

trace 

or 

9.5 

di 

9.3 

ab 

29.3 

hy 

15.6 

an 

26.1 

ol 

3.0 

mt 

2.1 

il 

3.1 

Cl 

trace 

or 

8.5 

di 

13.9 

ab 

35.6 

ol 

9.4 

an 

24.5 

mt 

3.5 

il 

2.8 

Q 

0.7 

di 

13.4 

or 

11.7 

hy 

6.1 

ab 

30.4 

mt 

1.9 

an 

26.4 

il 

2.6 

hm 

5.0 

FeSa 

0.06 

Q 

9.1 

di 

9.1 

Vo03 

0.04 

or 

13.3 

hy 

8.4 

NiO 

trace? 

ab 

26.2 

mt 

5.3 

SrO 

trace 

an 

25.3 

il 

1.2 

LioO 

trace 

Q 

7.6 

di 

9.0 

or 

7.2 

hy 

1.6 

ab 

38.3 

il 

2.2 

an 

28.1 

hm 

5.4 

S 

trace 

Q 

9.1 

di 

5.3 

SrO 

trace 

or 

7.2 

hy 

9.7 

Li20 

trace 

ab 

30.4 

mt 

5.1 

an 

30.3 

il 

2.3 

or 

14.5 

di 

11.4 

ab 

30.4 

ol 

3.6 

an 

28.9 

mt 

6.7 

ne 

3.1 

il 

0.6 

ap 

1.4 

S03 

none 

Q 

2.2 

di 

11.1 

Cl 

trace 

or 

7.8 

hy 

13.7 

S 

none 

ab 

29.9 

mt 

6.6 

Cr203 

none 

an 

25.9 

il 

2.3 

NiO 

0.02 

ap 

1.0 

SrO 

0. 12 

NiO 

0. 41 

Q 

7.6 

hy 

27.6 

or 

8.9 

mt 

3.0 

ab 

25.7 

il 

1.1 

an 

24.5 

Buffalo  Peaks, 
Colorado. 


Buckskin  Gulch, 
Leadville  region, 
Colorado. 

Babcock  Peak, 

La  Plata  Mountains, 
Colorado. 

Black  Face, 

Telluride, 

Colorado. 


Saddle  Mountain, 
Pike’s  Peak, 
Colorado. 


Mount  Sneffels, 
Telluride, 
Colorado. 


Saddle  Mountain, 
Pike’s  Peak, 
Colorado. 


Rio  Grande  Canyon, 
New  Mexico. 


Rio  Grande  Canyon, 
New  Mexico. 


Rio  Grande  Canyon, 
New  Mexico. 


Rio  Grande  Canyon, 
New  Mexico. 


Delarof  Harbor, 
Unga  Island, 
Alaska. 


Bogoslof  Island, 
Alaska. 


Kalinai  Pass, 

Aleutian  Peninsula, 
Alaska. 

Bogoslof  Island, 
Alaska. 


Red  Cone,  Crater 
Lake,  Oregon. 


Burns  Valley,  Cali¬ 
fornia. 


Analyst. 


Reference. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


H.  N.  Stokes. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


H.  N.  Stokes. 


W.  F.  Hille- 
brand. 


L.  G.  Eakins. 


L.  G.  Eakins. 


L.  G.  Eakins. 


L.  G.  Eakins. 


W.  F.  Hille- 
brand. 


T.  M.  Chatard. 


H.  N.  Stokes. 


T.  M.  Chatard. 


H.  N.  Stokes. 


W.  H.  Melville. 


W.  Cross, 

B.  U.  S.  G.  S.,  1, 
p.  26,  1883. 

W.  Cross, 

14A.R.U.S.  G.S.,II, 
p.  227,  1894. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  162,  1900. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  163,  1900. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  163,  1897. 


W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  163,  1900. 

W.  Cross, 

J.  G.  V., 
p.  689,  1897. 

J.  P.  Iddings, 

A.  J.  S.,  XXXVI, 

p.  220,  1888". 


J.  P.  Iddings, 

A.  J.  S.,  XXXVI, 
p.  220,  1890. 


J.  P.  Iddings, 

A.  J.  S.,  XXXVI, 

p.  220,  1888. 


J.  P.  Iddings, 

A.  J.  S.,  XXXVI, 

p.  220,  1888. 

G.  F.  Becker, 

18  A.  R.U.S.G.  S.,III, 
p. 55, 1898. 

G.  P.  Merrill, 

Proc.  IT.  S.  Nat.  Mus., 
VIII,  p.  33, 1885. 

J.  E.  Spurr, 

A.  G.,  XXV, 
p. 233, 1900. 

G.  P.  Merrill, 

Proc.  U.  S.  Nat.  Mus., 
VIII,  p.  33, 1885. 

H.  B.  Patton, 

B.  U.S.  G.  S.,  168, 
p. 223, 1900. 


G.  F.  Becker, 

M.U.  S.  G.  S.,XIII, 
p. 159, 1888. 


Author’s  name. 


Hypersthene- 

andesite. 


Hornblende- 

porphyrite. 

Monzonite. 


Lamprophyre, 
allied  to 
camptonite. 

Basalt. 


Gabbro- 

porphyry. 


Basalt. 


Basalt. 


Quartz-basalt. 


Quartz-basalt. 


Quartz-basalt. 


Augite- 

bronzite- 

andesita. 


Hornblende- 

andesite. 


Augite-aleutite. 


Hornblende- 

andesite. 


Basalt. 


Basalt. 


Remarks. 


Also  in  A.  J.  S., 
XXV,  p.  142, 
1883,  near  to- 
nalose. 


Near  campton- 
ose. 


Also  in 
B.  U.  S.  G.  S., 
66,  p.  30,  890. 


Also  in 
B.  U.  S.  G.  S., 
66,  p.  30, 1890. 


Also  in 
B.  IT.  S.  G.  S., 
66,  p.  30, 1890. 

Complete  in  B. 
U.  S.G.S.,168, 
p. 226, 1900. 


Dried  at  110°. 


Dried  at  110®. 
Sum  high. 


Near  tonal ose. 


278 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 

RANG  3.  ALKALICALOIC.  ANDASE— Continued. 


No. 

* 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na2G 

K,0 

H20  f 

H20- 

co2 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

52 

57.25 

16. 45 

1.67 

4.  72 

6.  74 

7.  65 

3.  00 

1.57 

0.  40 

0.  60 

0.  20 

0. 10 

none 

100.  35 

Al.  I 

.  954 

.161 

.010 

.065 

.169 

.136 

.048 

.017 

.007 

.001 

.001 

— 

53 

56.  70 

15.  75 

1.29 

5.32 

7. 16 

7.  67 

3.  36 

1.56 

0.  30 

0.  65 

0.  20 

0. 19 

0.  03 

100. 18 

Al.  I 

.945 

.154 

.008 

.074 

.179 

.137 

.054 

.018 

.008 

.001 

.003 

— 

54 

56.  53 

17.50 

1.35 

5.03 

5.94 

8.07 

3.  51 

1.  55 

0.27 

0.  54 

0. 15 

0.12 

trace 

100.  56 

Al.  1 

.942 

.171 

.009 

.070 

.149 

.144 

.  056 

.017 

1 

.007 

.001 

.002 

— 

55 

56.18 

16.  59 

1.51 

5.  51 

7.  26 

7.64 

3.  58 

1.47 

0.  42 

100. 16 

A3.  Ill 

.936 

.162 

.009 

.076 

.182 

.136 

.058 

.016 

56 

55.  93 

17-.  34 

1.50 

5.  20 

7.29 

8.04 

3.  32 

1.35 

0.  26 

100.  23 

A3.  Ill 

.  932 

.170 

.009 

.072 

.182 

.143 

.053 

.015 

57 

57.  59 

16.  49 

1.  22 

4.  89 

7.  72 

7.40 

3.  62 

0.  99 

0.  86 

100.  78 

A3.  Ill 

.960 

.161 

.007 

.068 

.193 

.132 

.058 

.011 

58 

57. 11 

17.  78 

3.54 

2.  74 

3.  41 

7.21 

3.81 

1.  86 

0.98 

0.  95 

0.  26 

0.  33 

0.  03 

100.  01 

Al.  I 

.952 

.174 

.022 

.038 

.  085 

.128 

.061 

0.20 

.012 

.002 

.005 

— 

59 

52.  63 

17.62 

6.49 

3. 10 

5.  64 

8.  62 

3.38 

1.73 

0.  79 

0.07 

0. 47 

trace 

0.  04 

100.  58 

Al.  I 

.877 

.173 

.040 

.043 

.141 

.153 

0.55 

0. 19 

• 

.001 

.003 

— 

- ' 

60 

55.  20 

18.  68 

3. 14 

4.  42 

4.  59 

8.  02 

3.  66 

1.01 

0.51 

0.  92 

0.  24 

0. 14 

0.  03 

100.  58 

Al.  I 

.920 

.183 

.020 

.061 

.115 

.143 

.059 

.011 

.012 

.002 

.002 

— 

61 

55.  86 

19.  30 

0.91 

4.  78 

2.  94 

7.  31 

3.  52 

1.52 

1.23 

0. 19 

none 

1.20 

0.38 

0. 16 

0. 13 

99.  86 

Alj  I 

.931 

.189 

.006 

.067 

.074 

.130 

.056 

.016 

.015 

.003 

.002 

.001 

62 

55. 18 

17.35 

2.  77 

3.  90 

4.  80 

7.98 

3.  42 

1.42 

1.52 

0. 16 

none 

0.  83 

0.20 

0. 15 

0.  04 

100.  09 

Al.  I 

.920 

.170 

.017 

.054 

.120 

.143 

.055 

.015 

.010 

.001 

.002 

— 

63 

55.  40 

15.  32 

2.  70 

5.  49 

5.  75 

9.  90 

2.  89 

1.52 

0.  38 

0.  03 

0.  60 

0.  22 

0.  11 

0.  07 

100.38 

Al.  I 

.923 

.150 

.017 

.076 

.144 

.177 

.047 

.016 

.008 

.002 

.002 

.001 

64 

50.  56 

14.  71 

3.54 

8.  90 

4.  07 

•  7.  58 

2.94 

2. 10 

1.12 

1.06 

1.71 

1. 14 

0. 13 

0.  25 

99.  81 

Al.  I 

.843 

.144 

.022 

.122 

.102 

.135 

.047 

.022 

.022 

.008 

.002 

.002 

65 

51.89 

15.  28 

3. 10 

3.  60 

8.  68 

7.  38 

3.27 

2.57 

1.37 

1. 17 

none 

0.91 

0.  61 

0. 12 

0. 15 

100. 21 

Al.  I 

.865 

.150 

.020 

.050 

.217 

.132 

.053 

.027 

.011 

.004 

.002 

.001 

66 

56.  40 

15.99 

3.  26 

3.  82 

3.54 

6.  98 

3.  83 

1.91 

2.  47 

1. 14 

0.  32 

0. 12 

99.  78 

A2.  II 

.940 

.  157 

.020 

.053 

.089 

.125 

.062 

.020 

.013 

.002 

.002 

C7 

51.98 

17.  20 

8.22 

2.00 

5.41 

8.17 

3.  84 

0.  90 

0.  62 

0.  36 

0.  99 

99.  69 

2.  72 

A2.  II 

.866 

.169 

.051 

.028 

.135 

.146 

.062 

0.10 

.004 

.007 

68 

54.  36 

14.  27 

6.  28 

3.  04 

5.  87 

7.50 

3.35 

2.  22 

1.21 

trace 

0.  30 

0.  33 

1.19 

0.  02 

100.  04 

Al.  I 

.906 

.140 

.039 

.042 

.147 

.134 

.054 

.023 

.004 

.002 

.017 

— 

DOS  ALAN E - A  N  DOS  E . 


279 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  ANDOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO 

LisO 

trace 

none 

Q  6.9 
or  9.5 
ab  25.2 
an  26. 7 

di 

by 

lnt 

il 

9.0 

18.9 

2.3 

1.1 

Cinder  Cone,  Snag 
Lake,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

XXXIII, 
p.  49,1887. 

Quartz-basalt. 

Dried  at  110°. 
Also  in  B.  U.  S. 
G.  S.,79,  p.  29, 
1891. 

Cr.,0;, 

SrO 

LisO 

trace 

trace 

trace 

O  3.2 
or  10.0 
nb  28.3 
an  22.8 

di 

hy 

mt 

il 

12.3 

19.6 

1.9 

1.2 

Cinder  Cone,  Snag 
Lake,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.S.G.S.,79, 
p.  29, 1891. 

Quartz-basalt. 

Dried  at  110°. 
Volcanic  bomb. 

Cr203 

SrO 

LUO 

trace? 

trace? 

trace 

Q  3.4 
or  9. 5 
ab  29. 3 
an  27. 2 

di 

hy 

mt 

il 

10.4 

17.0 

2.1 

1.1 

Cinder  Cone,  Snag 
Lake,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  79, 
p.  29,1891. 

Quartz-basalt. 

Dried  at  110°. 
Lapilli. 

Q  1.1 
or  8.9 
ab  30. 4 
an  24. 5 

di 

hy 

mt 

10.8 

21.9 

2.1 

Lake  Bidwell,  Cinder 
Cone,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  79, 
p.  29, 1891. 

Quartz-basalt. 

Dried  at  110°. 

Q  2.0 
or  8.3 
ab  27.8 
an  28.4 

di 

hy 

mt 

9.3 
22. 2 
2.1 

Cinder  Cone,  Cali¬ 
fornia. 

■ 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.S.G.S.,79,  • 
p.  29,  1891. 

Quartz-basalt. 

Dried  at  110°. 

<4  4.1 

or  6. 1 
ab  30. 4 
an  25. 4 

di 

hy 

mt 

9.0 

23.0 

1.6 

Silver  Lake,  Lassen 
Peak,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.S.G.  S.,  79, 
p.  29, 1891. 

Quartz-basalt. 

Dried  at  110°. 

SrO 

trace 

Q  9.4 
or  11.1 
ab  32. 0 
an  25. 9 

di 

hy 

mt 

il 

7. 7 
5.4 
5.1 

1.8 

Mill  Creek,  Shasta 
County,  California. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.S.  G.  S.,  148, 
p.  196,1897. 

Hypersthene- 

andesite. 

Dried  at  110°. 
Near  tonalose. 

vS03 

SrO 

Li30 

trace 

trace 

trace 

Q  2.5 
or  10. 6 
ab  28. 8 
an  27. 5 

di 

hy 

mt 

ap 

10.9 

9.4 

9.3 

1.1 

Burney  Butte,  Shasta 
County,  California. 

R.  B.  Riggs. 

J.  S.  Diller, 

B.  U.  S.  G.S.,148, 
p.  200, 1897. 

Basalt. 

Dried  at  110°. 

SrO 

LioO 

0. 02 
none 

Q  5.9 
or  6. 1 
ab  30. 9 
an  31.4 

di 

hy 

mt 

il 

6.8 

12.1 

4.6 

1.8 

Bid  well’s  Road,  Butte 
County,  California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.S.  G.  S.,  148, 
p. 196, 1897. 

Hypersthene- 

andesite. 

Dried  at  110°. 

FeS., 

NiO' 

SrO 

Li.:0 

0.39 

trace 

0.04 

trace 

Q  7.9 
or  8. 9 
ab  29.3 
an  32. 5 

di 

hy 

mt 

il 

3.2 
12. 2 

1.4 

2.2 

Tuolumne  River, 
Amador  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.U.  S.  G.S., 

I,  p.  702,  1896. 

Diorite. 

FeSo 

NiO' 

SrO 

Li20 

0.28 

0.03 

0.06 

trace 

Q  6. 6 
or  8. 3 
ab  28. 8 
an  27. 8 

di  9.8 
hy  10.8 
mt  3. 9 
il  1.5 

Tuolumne  River, 
Amador  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S. , 

I,  p.  702, 1896. 

Diorite- 

porphyry. 

SrO 

LUO 

none 

trace 

Q  5.1 
or  8. 9 
ab  24. 6 
an  24. 2 

di  20.5 
hy  11.4 
mt  3. 9 
il  1.1 

Near  Emigrant  Gap, 
Placer  County, 
California. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

B.  U.  S.  G.S.,148, 
p. 212, 1897. 

Gabbro. 

Near  camp- 
tonose. 

SrO 

LLO 

trace? 

trace? 

Q  3.7 
or  12.2 
ab  24. 6 
an  20. 9 

di  8.3 
hy  16.5 
mt  5. 1 
il  3. 5 
ap  2. 5 

Near  Mount  Ingalls, 
Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.  S., 

II,  p.  491, 1894. 

Basalt. 

Near  camp- 
tonose. 

ZrOo 

NiO" 

SrO 

Li20 

trace 

0. 02 

0. 09 
trace 

or  15.0 
ab  27. 8 
an  22.  2 

di 

hy 

ol 

mt 

il 

ap 

9.0 

7.9 

7.2 

4.6 

1.7 

1.2 

San  Joaquin  River, 
Madera  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

B.  U.S.  G.  S.,  168, 
p.  218, 1900. 

Basalt. 

Q  8.3 
or  11.1 
ab  32.5 
an  20.9 

di 

hy 

mt 

il 

11.1 

6.2 

4.6 

2.0 

Sutro  Tunnel, 

"Washoe,  Nevada. 

G.  E.  Moore. 

G.  F.  Becker, 

M.  U.S.G.  S., 

Ill,  p.  152, 1882. 

Pyroxene- 

andesite. 

Also  in  Hague 
and  Iddings, 
B.  U.S.  G.  S., 
17,  p.  33,  1885. 

Q  4.8 
or  5. 6 
ab  32. 5 
an  27. 0 

di  5.4 
hy  11.0 
mt  6. 5 
hm  3.7 
ap  2.4 

Cerro  de  Guadelupe, 
Puebla,  Mexico. 

A.  Rohrig. 

A.  Hoppe,  in 

Felix  and  Lenk, 

Btr.  G.  Mex.,  II, 
p.  211, 1899. 

Basalt. 

Near  beer- 
bachose. 

ZrOo 

Cl  ‘ 
FeSo 
CoO" 
Cu 

Pb 

trace 

0. 02 

0.02 

none 

0.06 

none 

Q  6.0 
or  12.8 
ab  28. 3 
an  17.5 

di 

hy 

mt 

il 

15.3 

7.6 

9.0 

0.6 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contrib. 

Diorite-gneiss. 

Dried  at  110°. 

1 

1 

280 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE — Continued. 


RANG  3.  ALKALICALCIC.  ANDASE— Continued. 


No. 

Si02 

ai2o3 

1 

Fe203 

FeO 

MgO 

CaO 

Na20 

K,0 

11,0+ 

H20— 

C02 

Ti02 

PA  1 

MnO 

BaO 

Sum 

Sp.  gr. 

69 

52. 19 

15.  47 

8.  30 

3.  65 

4.  59 

8.26 

2.  77 

1.48 

0.90  ' 

0. 15 

1.24 

0. 10 

0. 13 

0.  08 

99.  70 

Al.  I 

.870 

.151 

052 

.051 

.115 

.147 

.061 

.016 

.015 

.001 

.002 

.001 

70 

56.  91 

18. 18 

4.  65 

3.61 

3.  49 

7. 11 

4.  02 

1.61 

0.36 

0.  25 

100. 19 

A3.  Ill 

.949 

.178 

.029 

.050 

.087 

.127 

.064 

.017 

.002 

71 

56.  89 

19.  72 

4.06 

3.  65 

1.91 

5.87 

5. 14 

1.96 

0.  62 

trace 

trace 

99.  82 

A3.  Ill 

.948 

.193 

.025 

.051 

.048 

.105 

.083 

.021 

— 

— 

72 

50.  97 

15.  56 

4.  43 

7.62 

4.  28 

7.  05 

5.  04 

1.26 

1.58 

1.98 

0.  43 

0.  38 

100.  74 

2.919 

A2.  II 

.  850 

.  153 

.027 

.106 

.107 

.126 

.081 

.014 

.024 

.003 

.005 

73 

56.  09 

16.  03 

3. 12 

4.  77 

8.  03 

6.  73 

3.  49 

1.87 

0.  16 

0.  37 

100.  66 

2.  892 

A3.  Ill 

.935 

.157 

.020 

.062 

.201 

.120 

.056 

.020 

.005 

74 

48.  06 

16.  95 

4.  78 

7.60 

5.  51 

7.  79 

3.  37 

1.42 

0.  80 
/ 

2.  57 

0.  63 

trace 

99.  48 

A2.  II 

.801 

.166 

.030 

.106 

.138 

.139 

• 

.054 

.015 

.031 

.004 

75 

53.  29 

18.87 

4.  09 

4.  53 

2.47 

5.71 

4.07 

3.66 

2.66 

99.  35 

2.  765 

B3.  IV 

.888 

.185 

.026 

.062 

.062 

.102 

.066 

.039 

76 

50.  30 

18.67 

6.  06 

4.  27 

4.  66 

9.37 

4.  05 

1.42 

n.  d. 

1.84 

100. 64 

A3.  Ill 

.838 

.183 

.038 

.060 

.117 

.168 

.066 

.015 

.023 

77 

55.  05 

16.  26 

3.  83 

3.  31 

5.34 

7.  61 

3.37 

1.49' 

1.93 

1.01 

0.20 

99.  53 

2.  796 

A2.  II 

.918 

.159 

.024 

.046 

.134 

.135 

.055 

.016 

.013 

.001 

78 

53.  58 

15.  84 

2.  98 

4.  90 

7. 16 

7.  86 

2.  99 

1.63 

2.  54 

0.  98 

0.19 

100.  75 

2.  760 

A2.  II 

.893 

.  155 

.019 

.068 

.179 

.140 

.048 

0. 17 

.012 

.001 

79 

53.  31 

20.  05 

2. 18 

3.37 

3.33 

8.  65 

4. 17 

1.30 

2.  02 

0.  06 

1.10 

0. 18 

99.  98 

2.  746 

A2.  II 

.889 

.196 

.014 

.048 

.083 

.154 

.068 

.014 

.014 

.001 

80 

51 . 65 

13.41 

8.45 

2.  79 

3.  60 

8. 17 

3.90 

1.58 

0. 14 

trace 

3.  37 

1.07 

99.41 

B2.  Ill 

.861 

.131 

.053 

.039 

.090 

.146 

.063 

.017 

042 

.008 

81 

50.  74 

15.  89 

7.88 

1.  75 

4.59 

8.97 

3.  27 

1.30 

3.  25 

0.14 

1.37 

.  0.44 

99.  72 

2.  742 

A2.  II 

.846 

.154 

.050 

.025 

.115 

.160 

.053 

.013 

.017 

.003 

82 

54.13 

16. 17 

3.36 

4.  76 

6.  76 

7.48 

2.89 

1.63 

2.  72 

trace 

0. 19 

100. 25 

2.  625 

A2.  II 

.902 

.158 

.021 

• 

.066 

.169 

.134 

.047 

.017 

.001 

83 

51.53 

18.  28 

4.89 

2. 11 

1.69 

5. 10 

4.  74 

3.01 

6.90 

1.33 

0.  46 

0. 18 

100. 29 

2.  554 

A2.  II 

.859 

.179 

.031 

'  .030 

.042 

.091 

.076 

.032 

.016 

.003 

.002 

84 

50.  45 

18.  90 

7.  73 

2.61 

5.41 

9.  00 

3.  92 

1.05 

0. 10 

0. 18 

0.27 

|  0.52 

100. 14 

A2.  II 

.841 

.  185 

.049 

.036 

.135 

.160 

.063 

.012 

.003 

.004 

85 

54.  1 0 

18.  05 

3.  63 

3.31 

3.  90 

6.  36 

4.08 

1.97 

3.28 

1.09 

trace 

100.  50 

2.684 

A2.  II 

.912 

.177 

.022 

.046 

.098 

.113 

.066 

i  .021 

.013 

_ 

'  I 

DOSALANE - ANDOSE, 


281 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  ANDOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ZrO., 

Cl  ' 
FeSo 
CoO' 
Cu 

none 

0.13 

0. 26 

none 

trace 

Q  4.3 
or  8.9 
ab  32. 0 
an  20. 6 

di 

hy 

mt 

il 

hm 

15.8 

4.2 
8.4 

2.3 
2.6 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Priv.  contrib. 

Proterobase. 

Dried  at  110°. 

Q  7.9 
or  9. 5 
ab  33. 5 
an  27.0 

di 

hy 

mt 

6.8 

8.2 

6.7 

Purgatorio,  Pasto 
Volcano,  Colombia. 

R.  Kiich. 

R.  Kiich, 

G.  Stud.  Colomb.,  I, 
p.  139,  1892. 

Pyroxene- 

andesite. 

• 

so3 

Cl 

LioO 

Ag 

trace 

trace 

trace 

trace 

Q  3.4 
or  11.7 
ab  43.5 
an  24.7 

di 

hy 

mt 

3.7 
6.5 

5.8 

Eruption  of  July  22, 
1885,  Cotopaxi, 
Ecuador. 

J.  W.  Mallet. 

J.  W.  Mallet, 

Pr.  R.  Soc., 

XLII,  2,  1887. 

Andesite. 

Ashes. 

S 

0.16 

or  7. 6 
ab  41.9 
an  16. 1 
ne  0. 3 

di 

ol 

mt 

il 

ap 

13.2 
8.5 
6. 3 
3.7 
1.0 

Cord,  de  Dona  Ana, 
Coquimbo,  Chile. 

F.  Soenderop. 

F.  v.  Wolff, 

Z.  D.  G.  G.,  LI, 
p.  529,  1899. 

Augite- 

kersantite. 

Near  akerose. 

Q  2.5 
or  11.1 
ab  29. 3 
an  22. 5 

di  8. 8 
hy  20.  7 
mt  4.6 
il  0.8 

Campo  Maior,  Alem- 
tejo,  Portugal. 

A.  Merian. 

A.  Merian, 

N.  J.  B.  B.,  Ill, 
p.  296,  1885. 

Mica-diorite. 

or  8.3 
ab  28. 3 
an  26.9 

di 

hy 

ol 

mt 

il 

ap 

6.6 
12.  5 
2.9 
7.0 
4.8 
1.4 

Hovland,  Laugendal, 
Norway. 

V.  Schmelck. 

W.  C.  Brbgger, 

Eg.  Kg.,  Ill, 
p.  75,  1899. 

Bronzite- 

kersantite. 

or  21.7 
ab  34.  6 
an  22. 2 

di 

hv 

of 

mt 

5.1 

3.5 

3.8 

5.8 

Barnabas  Bridge, 
Murbach,  Vogesen. 

A.  Denniger. 

A.  Osann, 

Abh.  G.  Sp.  K.  Els.  L, 
III,  p.  123,  1887. 

Labradorite 

porphyry. 

Sum  low. 

Near  shoshon- 
ose. 

or  6. 3 
ab  33. 5 
an  28. 4 
ne  0.6 

di 

ol 

mt 

il 

14.2 

3.6 

8.8 

3.4 

Ermensbach ,  V  ogesen. 

Loscher. 

W.  Deecke, 

Z.  D.  G.  G.,  XLIII, 
p.  873,  1891. 

Diabase. 

so3 

Org 

0.06 

0.08 

Q  7.7 
or  8. 9 
ab  28.8 
an  24.5 

di 

hy 

mt 

il 

10.5 

9.4 

5.6 

2.0 

Martinstein,  Nahethal, 
Rh.  Prussia. 

Jacobs. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  309,  1892. 

Bronzite- 

tholeiite. 

S03  for  S. 

so3 

0.16 

Q  3.4 
or  9. 5 
ab  25.2 
an  25. 0 

di 

hy 

mt 

il 

11.0 

17.5 

4.4 

1.8 

Mettweiler,  Nahethal, 
Rh.  Prussia. 

A.  Hesse. 

A.  Leppla, 

Erl.  G.  Sp.  K.  Pr., 
XLVI,  p.  35,  1894. 

Melaphyr. 

S03  for  S. 

so3 

0.20 

Q  1.6 
or  7.8 
ab  35. 6 
an  31.  7 

di 

hy 

mt 

il 

9.0 

6.7 

3.2 

2.2 

Sattel,  Niederkirchen, 
Nahethal, 

Rh.  Prussia. 

* 

Gremse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  309,  1892. 

Dolerite. 

S03  for  S. 

so3 

1.28 

Q  7.3 
or  9. 5 
ab  33. 0 
an  14. 2 

di 

hy 

il 

hm 

ap 

14.7 

2.1 

6.2 

8.5 

2.6 

Staufenberg, 

Wesergebiet, 

Rh.  Prussia. 

P.  Jannasch. 

F.  Rinne, 

Jb.  Pr.G.  L-A.,  XIII, 
p.  79*,  1893. 

Basalt. 

Ti02  high? 

Sum  low. 

S03  for  S. 

S03 

0. 13 

Q  5.8 
or  7.2 
ab  27.8 
an  24.5 

di 

hy 

mt 

il 

hm 

ap 

13.4 

5.3 

1.9 

2.6 

6.8 

1.0 

Tiefert,  Nahethal, 

Rh.  Prussia. 

Biirwald. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  309,  1892. 

Labradorite- 

porphyrv. 

S03  for  S. 

so3 

0.16 

Q  4.6 
or  9.5 
ab  24.6 
an  26. 1 

di 

hy 

mt 

9.0 

18.6 

4.9 

Eulenbis,  Pfalz. 

H.  Haefcke. 

A.  Leppla, 

Jb.  Pr.  G.  L-A.,  XIV, 
p.  146,  1894. 

Melaphyr. 

S03  for  S. 

s 

0.07 

Q  1.0 
or  17.8 
ab  39.8 
an  19. 7 

di 

hy 

mt 

il 

hm 

ap 

2.2 

3.2 

3.2 

2.5 

2.7 

1.1 

Mondhalde, 

Kaiserstuhl,  Baden. 

F.  Graeff. 

F.  Graeff, 
cf.  N.  J.,  1890,  II, 
p.  65. 

Tephrite. 

Center  of  dike. 
Cf.  No.  39, 
shoshonose. 

or  6. 7 
ab  33. 0 
an  30. 6 

di 

hy 

mt 

il 

hm 

ap 

8.0 

9.7 

7.7 
0.5 
2.5 
1.3 

Lichtenberg, 
Odenwald,  Hesse. 

Not  stated. 

C.  Chelius, 
cf.  N.  J.,  1894,  II, 
p.  419. 

Diorite. 

so3 

0.13 

Q  4.7 
or  11.7 
ab  34.6 
an  25. 0 

di 

hy 

mt 

il 

5.4 

8.6 

5.1 

2.0 

Herchweiler, 

St.  Wendel,  Harz 
Mountains. 

Fischer. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  316,  1892. 

(Porphyrite.) 

No  name. 

S03  for  S. 

282 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE— Continued. 

RANG  3.  ALKALICALCIC.  ANDASE— Continued. 


No. 

Si02 

ai2o3 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

86 

54. 19 

16.  28 

5.  08 

3.  46 

2.  98 

6.34 

• 

4.05 

1.98 

3.  67 

0. 07 

1.56 

0.  43 

100.  23 

2.  656 

A2.  II 

.903 

.160 

.  032 

.049 

.075 

.113 

.  065 

.021 

.019 

.003 

87 

55.  54 

15.64 

1.19 

7. 13 

4.84. 

5.  67 

3. 17 

2.28 

2.  93 

0.  40 

1.24 

0.  45 

100.  87 

2.  798 

A2.  II 

.926 

.153 

.007 

.  099 

.121 

.101 

.051 

.024 

.015 

.003 

88 

52.  34 

19.90 

6.  57 

0.  55 

2.  26 

6.  35 

5.66 

2.  68 

3.65 

0.  41 

0. 14 

0.09 

100.  62 

2.623 

A2.  II 

.872 

.195 

.041 

.008 

.  057 

.113 

.091 

.029 

.002 

.001 

89 

44.  85 

18.  08 

7.  71 

3.  23 

4. 16 

9.  97 

3. 19 

2.  82 

2.  56 

0.  46 

1.78 

1.  55 

100.  36 

2.  839 

A2.  II 

.748 

.177 

.048 

.045 

.104 

.178 

.051 

.030 

.022 

.011 

90 

58.  20 

19.20 

2.  01 

4.42 

3.  25 

5.60 

4.53 

1.81 

1.28 

0.  21 

0.  33 

100.  84 

B2.  Ill 

.970 

.188 

.013 

.061 

.081 

.100 

.073 

.020 

.003 

.002 

91 

46.  76 

17.  93 

5.33 

5.  62 

7.31 

8.  24 

3.  53 

2.  20 

1.83 

1.33 

trace 

trace 

100.  08 

A3.  Ill 

.779 

.175 

.033 

.078 

.183 

.147 

.056 

.023 

— 

— 

92 

4 

58.  00 

18.87 

4.  81 

1.01 

3.  84 

7.92 

3.50 

2.  40 

0.  60 

100.  95 

2.  96 

\ 

B3.  IV 

.967 

.185 

.030 

.014 

.096 

.141 

.056 

.025 

93 

56.  82 

16.  68 

3.84 

4.57 

3.  93 

6.  36 

3.  39 

2.81 

1.48 

trace 

99.  88 

2.  657 

A3.  Ill 

.947 

.163 

.024 

.064 

.098 

.113 

.055 

.030 

— 

22° 

94 

49.  24 

19.  06 

1.  77 

10.  33 

5.00 

8.  75 

3.  89 

1. 19 

0.  63 

99.86 

' 

A3.  Ill 

.821 

.186 

.011 

.143 

.  125 

.156 

.063 

.013 

95 

52.  20 

14.  67 

1.83 

11.51 

3.  48 

6.  69 

3.  04 

2.  49 

0.11 

2.  55 

0.  83 

trace 

100.  23 

A2.  II 

.870 

.144 

.011 

.160 

.087 

.120 

.049 

.026 

.032 

.006 

— 

. 

96 

53. 17 

13.  62 

5.  42 

5. 96 

3.  84 

8.  67 

2.  95 

2.40 

3.  56 

trace 

99.  59 

A3.  Ill 

.886 

.133 

.034 

.083 

.096 

.  155 

.048 

.025 

4 

✓ 

97 

52.  27 

16.  07 

2.  25 

14.  48 

1.68 

6.  67 

3.  29 

1.50 

2.  05 

100.  26 

A3.  Ill 

.871 

.157 

.014 

.201 

.042 

.120 

.053 

.016 

98 

53.61 

16. 11 

3.05 

4.  45 

6.  80 

7.00 

3.95 

3.08 

1.65 

0.34 

0. 14 

100. 18 

2.  75 

A2.  II 

.894 

.158 

.019 

.062 

.170 

.125 

.064 

.033 

.004 

.002 

15° 

99 

55.  87 

18.  74 

4.  88 

5.  01 

1.39 

8.  20 

3.43 

1.55 

0.36 

0.  01 

99.  45 

2.  769 

B3.  IV 

.925 

.183 

.031 

.089 

.034 

.  146 

.055 

.017 

— 

100 

45.  40 

17.00 

9.  97 

3.  27 

5.  07 

10.  72 

3.28 

1.09 

0. 16 

2.90 

1.27 

0.  40 

100.  53 

A2.  II 

.757 

.167 

.062 

.046 

.127 

.191 

.053 

.012 

.035 

.009 

.006 

101 

48.71 

18.  87 

3. 18 

8.  00 

4.  85 

9.  87 

4.15 

1.52 

none 

1.81 

trace 

trace 

100.96 

2.  99 

B2.  Ill 

.812 

.185 

.020 

•  111 

.121 

.177 

.067 

.016 

.023 

— 

— 

102 

45.61 

15.  98 

8.  25 

11.60 

3.  75 

6.  42 

3.  50 

1.82 

0.  27 

1.  15 

0.  72 

1.20 

100.  27 

2.  94 

A2.  II 

.  760 

.156 

.052 

.161 

.094 

.114 

.056 

.020 

.014 

.005 

.017 

103 

47.  63 

17.20 

3.  60 

8.  09 

6.  25 

6.  42 

4.  65 

1.31 

2.  71 

0.  44 

1.39 

trace 

100.  22 

2.  893 

A2.  11 

.794 

.169 

.029 

.112 

.156 

.114 

.075 

.014 

' 

.017 

DOSALANE - ANDOSE. 


283 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  4.  DOSODIC.  ANDOSE— Continued. 


1 

Inclusive. 

Norm. 

• 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

S03 

0. 14 

Q  8.0 
or  11.7 
ab  34. 1 
an  20. 6 

di 

hy 

mt 

il 

ap 

6.5 

4.5 
7.4 
2.9 
1.0 

Idarthal,  St.  Wendel, 
Harz  Mountains. 

Biirwald. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A.,  X, 
p.  316,  1892. 

Basalt. 

S03 

Org 

0.33 

0. 00 

Q  6.4 
or  13. 3 
ab  26. 7 
an  22.2 

di 

hy 

mt 

il 

ap 

2.5 
21.0 

1.6 
2.3 
1.1 

Lampersdorf,  Silesia. 

W.  Hampe. 

E.  Dathe, 

Jb.  Pr.  G.  L-A.,  VII, 
p.  331,  1887. 

Quartz-augite- 

diorite. 

so3 

0. 02 

or  16.1 
ab  36.7 
an  20. 9 
ne  6. 0 

di 

ol 

mt 

hm 

8.2 

1.4 

1.9 

5.3 

Birkigt, 

Dobrankathal, 

Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XIV, 
p.  108,  1894. 

Nosean-leucite- 

tephrite. 

ot  16.7 
ab  20. 4 
an  26.7 
ne  3.4 

di 

ol 

mt 

il 

hm 

ap 

9.7 

4.2 

5.3 

3.4 
4.0 

3.7 

Birkigt, 

Dobrankathal, 

Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XIV, 
p.  109,  1894. 

Nephelite- 

tephrite. 

Q  5.3 
or  11.1 
ab  38.3 
an  26. 3 

di 

hy 

mt 

1.1 

13.8 

3.0 

Pbllagraben,  Salzkam- 
mergut,  Tyrol. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.,  Wien, 
XLIX,  p.  250,  1899. 

Tonalite. 

or  12.8 
ab  19.4 
an  26.  7 
ne  5. 4 

di 

ol 

mt 

11.4 

13.5 
7.7 

Dorfestein,  Ftirsten- 
feld,  Styria. 

R.  v.  Zevnek. 

A.  Sigmund, 

T.  M.  P.  M.,  XVII, 
p.  534,  1898. 

Magmabasalt. 

Q  8.4 
or  13.9 
ab  29. 3 
an  28. 9 

di 

hy 

mt 

hm 

8.0 

5.9 

3.2 

2.6 

Yal  Ufirn,  St.  Gott- 
hard,  Switzerland. 

Grubenmann 
and  Ander- 
wert. 

LT.  Grubenmann, 

Mt.  Thurg.  Nf.  Ges., 
X,  p.  20,  1892. 

Diorite. 

Cl 

trace 

Q  6.5 
or  16.7 
ab  28.8 
an  21.7 

di 

hy 

mt 

7.9 

11.2 

5.6 

Mte.  Scopa,  Capraia 
Island,  Italy. 

. 

A.  Rohrig. 

H.  Emmons, 

Q.  J.  G.  S.,  XLIX, 
p.  141,  1893. 

Andesite. 

or  7. 2 
ab  26. 2 
an  30. 6 
ne  3.7 

di 

ol 

mt 

10.7 

18.3 

2.6 

Ferdinandea  Island, 
Mediterranean. 

H.  Foerstner. 

H.  Foerstner, 

T.  M.  P.  M.,  XV, 
p.  391,  1883. 

Basalt. 

Cl 

s 

0.08 

0. 23 

Q  2.8 
or  14.5 
ab  25. 7 
an  19.2 

di 

hy 

mt 

il 

ap 

7.3 

20.6 

2.6 

4.8 

1.9 

Goroschki, 

Wolhvnia,  Russia. 

W.  Tarassenko. 

W.  Tarassenko, 
cf.  N.  J..  1899,  I, 
p.  463. 

Gabbro- 

syenite. 

Q  5.3 
or  13.9 
ab  25. 2 
an  16.7 

di 

hy 

mt 

21.7 

5.5 

7.9 

Jalguba,  Olonez, 
Russia. 

Loewinson- 

Lessing. 

Loewinson-Lessing, 

T.  M.  P.  M.,  VI, 
p.  294,  1885. 

Variolite. 

Q  1.2 
or  8. 9 
ab  27.8 
an  24. 5 

di 

hy 

mt 

7. 7 
24.9 
3.2 

Caucasus  Mountains. 

Loewinson- 
Lessing  and 
Krikmeyer. 

Loewinson-Lessing, 
cf.  N.  J.,  1899,  II, 
p.  234. 

Albite-diorite. 

or  18.3 
ab  32.0 
an  17. 0 
ne  0. 9 

di 

ol 

mt 

14.6 

11.1 

4.7 

Persufli,  Thessaly, 
Greece. 

R.  Lepsius. 

R.  Lepsius, 

Geol.  v.  Attika, 

Berlin,  1893,  p.  169. 

Basalt. 

Cl 

trace 

Q  8.6 
or  9. 5 
ab  28. 8 
an  30. 9 

di 

hy 

mt 

8.2 

6.9 

7.2 

Mount  Oros, 

TEgina, 

Greece. 

A.  Rohrig. 

H.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

Augite- 

hypersthene- 

andesite. 

or  6.7 
ab  27.8 
an  28. 4 

di 

hy 

ol 

mt 

il 

hm 

ap 

12.8 

2.2 

3.2 
2.6 
6.4 

8.2 
3.0 

Punta  Delgada, 

Azores. 

C.  v.  John? 

C.  v.  John, 

Jb.  G.  R-A.,  Wien, 
XLVI,  p.  290,  1896. 

Basalt. 

or  8.9 
ab  22.5 
|  an  28. 4 
ne  6.8 

di 

ol 

mt 

il 

17.2 

9.3 
4.6 

3.4 

Crater  walls, 

Kilauea,  Hawaii. 

0.  Silvestri. 

().  Silvestri, 

B.  C.  G.  It.,  XIX, 
p.  187,  1888. 

Basalt. 

or  11.1 
ab  29. 3 
an  22. 4 

di 

of 

mt 

il 

ap 

4.0 

3.7 
13.7 
12.1 

2.2 

1.7 

Crater  walls, 

Kilauea,  Hawaii. 

O.  Silvestri. 

O.  Silvestri, 

B.  C.  G.  It.,  XIX, 
p.  173,  1888. 

Basalt. 

FeS2 

0.53 

or  7.8 

1  ab  31.4 

1  an  22. 2 
ne  4.3 

di 

ol 

mt 

il 

7. 7 
14.9 

6.7 
2.6 

Navigation  Creek, 
Noyang,  Victoria. 

A.  W.  Howitt. 

A.  W.  Howitt, 

Tr.  R.  Soe.  Viet., 

XX,  p.  53,  1884. 

Diorite. 

Remarks. 


S03  for  S. 


S03  for  S. 


Iron  oxides? 
S03  low. 


Iron  oxides? 
Near  shoshon- 
ose. 


Not  fresh. 


Dried  at  120°. 
Near  camp- 
tonose. 


Near  camp- 
tonose. 


FeO  and  MgO? 
Near  camp- 
tonose. 


Sum  high. 


Near  camp- 
tonose. 


284 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 


RANG  3.  ALKALICALCIC.  ANDASE— Continued. 


No. 

Si02 

Al-A 

FeA 

FeO 

MgO 

CaO 

Na.,0 

k2o 

h2o+ 

H,0— 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

46.91 

16.  67 

11.46 

5.57 

3.61 

6.  06 

3.  86 

.0.  78 

n.  d. 

3.  23 

1.08 

trace 

99.  23 

B2.  Ill 

.  783 

.163 

.072 

.078 

.090 

.108 

.062 

.008 

.039 

.008 

— 

2 

49.  64 

15.07 

1.66 

8.  82 

5.  43 

7.  23 

4.19 

0.  89 

2.  81 

0.  45 

0.  32 

2.  32 

0.  29 

0.  25 

0.  02 

100.  27 

Al.  I 

.827 

.148 

.010 

.122 

.136 

.128 

.068 

.009 

.028 

.002 

.004 

— 

3 

46.  47 

16.  28 

3. 15 

8.96 

6.  56 

7.  90 

3.64 

0.  21 

3.89 

0.  28 

1.26 

1.28 

0.  13 

0.09 

none 

100. 11 

Al.  I 

.775 

.160 

.020 

.125 

.164 

.141 

.059 

.002 

.016 

.001 

.001 

— 

4 

56.  60 

17.  84 

2. 55 

4.  09 

3.16 

6.  28 

4.  45 

0.  45 

3.20 

1.59 

0. 14 

trace 

none 

100. 35 

2.  39 

A2.  II 

.943 

.175 

.016 

.057 

.079 

.114 

.072 

.005 

.020 

.001 

— 

— 

5 

57.47 

18.  86 

2.21 

4.  08 

4.  27 

7.42 

3.  85 

0.  73 

0.  22 

0.  75 

0. 24 

0. 10 

0.  03 

100.  34 

Al.  I 

.958 

.185 

.014 

.  057 

.107 

.132 

.062 

.008 

.009 

.002 

.001 

— 

6 

55.  08 

18.93 

2.02 

5.  56 

5.17 

8.  40 

4.  23 

0.  74 

0.  29 

trace 

100.  42 

A3.  Ill 

.918 

.185 

.013 

.077 

.129 

.150 

.068 

.008 

— 

7 

57.87 

16.  30 

1.71 

3.  86 

5.50 

5.53 

5.01 

0.  75 

2.  40 

0.26 

0.  53 

0.  27 

0.  08 

0.  05 

100. 12 

Al.  I 

.964 

.161 

.010 

.054 

.138 

.099 

.080 

.008 

.007 

.002 

.001 

— 

8 

52.  82 

16.  39 

2.31 

10.  92 

3.  43 

7.87 

4.  83 

0.  92 

0. 48 

trace 

99.  97 

A3.  Ill 

.880 

.160 

.014 

.151 

.086 

.141 

.077 

.010 

— 

9 

52. 16 

15.  86 

4.  90 

5.  86 

4.57 

8. 16 

3.  67 

0.  88 

2.  28 

1.38 

0.  32 

0.  24 

100. 54 

2.  764 

A2.  II 

.869 

.  155 

.030 

.081 

.114 

.145 

.059 

.009 

.004 

.002 

10 

52.  35 

17.90 

9.  38 

2.  02 

1.90 

8.45 

4.  97 

0.  76 

1.17 

0. 45 

trace 

99.  35 

B2.  Ill 

.873 

.175 

.059 

.028 

.048 

.151 

.080 

.008 

.003 

— 

11 

47.  78 

20.51 

2. 54 

6.  07 

4.  62 

10.  65 

4.69 

0.  51 

0.  54 

0.  10 

0.  26 

0.49 

100.  07 

A2.  II 

.796 

.201 

.015 

.085 

.116 

.190 

.076 

.005 

.003 

.003 

12 

51.70 

19.  39 

2.  54 

6.44 

4.  64 

8.  95 

4.  07 

0.  83 

0.  92 

0. 15 

0. 14 

0.  37 

100.  68 

A2.  II 

.862 

.190 

-.015 

.089 

.116 

.160 

.066 

.009 

.002 

.003 

13 

47.21 

20.  52 

7.  48 

5.  32 

4. 16 

8.  63 

5.17 

0.  33 

0.  34 

0. 10 

0.  46 

99.91 

A2.  II 

.787 

.201 

.047 

.074 

.104 

.153 

.084 

•  003 

.003 

14 

47.  20 

16.  60 

7.  80 

6.  40 

5.  69 

7.  20 

4.  74 

0.  55 

1.29 

1.80 

0. 18 

99.  54 

A2.  II 

.787 

.163 

.049 

.089 

.142 

.128 

.076 

.006 

.  022 

.001 

15 

53.  86 

16.  44 

8.02 

1.96 

5.44 

8.  53 

4.52 

0.07 

1.27 

0. 15 

100.  30 

2.  894 

A3.  Ill 

.864 

.161 

.050 

.028 

.136 

.151 

.072 

.001 

.001 

22 » 

16 

48.00 

15.  80 

11.76 

3.  29 

7.  70 

5.  51 

3.  42 

0.  46 

4.  20 

trace 

trace 

100. 14 

3. 158 

A3.  Ill 

.800 

.155 

.073 

.046 

.193 

.098 

.055 

.005 

— 

— 

15” 

17 

51. 18 

17.44 

4.  70 

4. 15 

2.  87 

9.60 

5.  84 

0.  44 

1.46 

2.  40 

0.  79 

0. 10 

100.  97 

B2.  Ill 

.853 

.171 

.029 

.058 

.072 

.171 

.094 

.004 

.030 

.006 

.001 

18 

49.  01 

16.29 

7. 61 

4.  89 

3.  62 

9.  79 

3.82 

0.  80 

3.93 

0. 49 

0.  27 

100.  84 

Bl.  II 

.817 

.160 

.048 

.068 

.091 

.175 

.061 

.008 

.047 

.003 

.004 

19 

46.  30 

17.95 

6.21 

6.  79 

3.  67 

8.17 

3.  92 

0.89 

5.35 

0.  53 

0.  26 

100.  32 

Al.  I 

.772 

.177 

.039 

.094 

.092 

.146 

.063 

.009 

.065 

.004 

.004 

DOSALANK - BEERBACHOSE. 


285 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 


SUBRANG  5.  PERSODIC.  BEERBACHOSE. 


Inclusive. 

Korin. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. ' 

Q  6.5 
or  4. 4 
ab  32. 5 
an  22. 8 

C  1.1 

hy 

mt 

il 

hm 

ap 

9.0 

9.0 

6.0 

5.3 

2.6 

Nain,  Labrador. 

A.  Wichmann. 

A.  Wichmann, 
Z.D.G.G.,  XXXVI, 
p. 494, 1884. 

Mica-porphy- 

rite. 

ZrO» 

FeS; 

Cr203 

v,o3 

NiO 

SrO 

none 

0. 79 
trace 

o.w 

trace 

0.05 

or  5. 0 
ab  35.6 
an  19. 7 

di 

hy 

ol 

mt 

il 

13.0 

6.0 

9.0 

2.3 

4.3 

Aroostook  Falls, 
Aroostook  County, 
Maine. 

W.  F.  Hille- 
brand. 

H.  E.  Gregory, 

B.  U.S.G.S.,165, 
p.  176, 1900. 

Diabase. 

Not  fresh. 

so3 

F 

Cr203 

SrO 

LuO 

CuO 

none 

trace 

0. 01 
none 
trace 
trace 

or  1.1 
ab  30.9 
an  27. 5 

di 

hy 

ol 

mt 

il 

9.5 

4.6 
13.9 

4.6 

2.4, 

Crystal  Falls, 
Michigan. 

H.  N.  Stokes. 

J.  M.  Clements, 
M.U.S.G.S.,  XXXVI, 
p. 103,  1899. 

Metabasalt. 

Not  fresh. 

Near  hessose. 
Nearly  in  salfe- 
mane. 

SrO 

none 

Q  8.9 
or  2.8 
ab  37. 7 
an  27. 2 

di 

hy 

mt 

il 

3.4 

11.5 

3.7 

3.1 

Little  Saganaga  Lake, 
Minnesota. 

A.  N.  AVinchell. 

A.  N.  Winchell, 

A.  G.,  XXVI, 
p.  352, 1900. 

Quartz-gabbro. 

Near  placerose. 
Sp.  gr.  low. 

SrO 

0.11 

Q  9.6 
or  4.4 
ab  32. 5 
an  32. 0 

di 

hy 

mt 

il 

3.9 

12.3 

3.2 

1.4 

Near  Crater  Lake, 
Oregon. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.S.,148, 
p.  231, 1897. 

Basalt. 

Near  hessose. 
Near  placerose. 

Q  0.6 
or  4.4 
ab  35.  6 
an  30. 3 

di  9. 2 
hy  16.9 
mt  3. 0 

Delta,  Shasta  County, 
California. 

W.  H.  Melville. 

J.  S.  Diller, 

B.  IT.  S.  G.  S.,  148, 
p.  190,  1897. 

Andesite-basalt. 

SrO 

Li20 

trace 

trace 

Q  5.0 
or  4. 4 
ab  41.9 
an  20. 3 

di 

hy 

mt 

il 

5.9 
16. 5 
2.3 
1.1 

South  Husent  Creek, 
Butte  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

J.  G.,  Ill, 
p.  403, 1895. 

Diorite. 

Also  in  17  A.  R. 
U.  S.  G.  S.,  I, 
p.  731, 1896. 

or  5. 6 
ab  40. 3 
an  20.3 

di 

ol 

mt 

16.0 

13.9 

3.2 

Wiborg,  Finland. 

H.  Berghell. 

H.  Berghell, 

Finl.  G.  Und.,  33, 
p. 26, 1898. 

Diabase. 

so3 

Org 

0. 21 

0.05 

Q  4.1 
or  5. 0 
ab  30.9 
an  24.2 

di 

hy 

mt 

il 

13.2 

11.3 
7.0 
0.6 

Kyrburg,  Nahethal, 
Rh.  Prussia. 

Biirwald. 

K.  A.  Lossen, 

Jb.Pr.  G.  L-A.,  X, 
p. 309, 1892. 

Basalt. 

S03  for  S. 

Q  3.5 
or  4.4 
ab  41.9 
an  24.2 

di 

hy 

mt 

hm 

10.4 

1.9 

6.5 

5.0 

Near  Grube  Horn, 
Siebengebirge,/ 

Rh.  Prussia. 

Not  stated. 

E.  Kaiser, 

Vh.  Nh.  Ver.  Bonn, 

LI  V,  p.  176, 1897. 

Andesite. 

t 

Iron  oxides? 
Sum  low. 

FeS2 

0.31 

or  2.8 
ab  25. 2 
an  33. 3 
ne  8. 0 

di 

ol 

rat 

ap 

13.4 

10.2 

3.6 

1.1 

Wallbach,  Hesse. 

W.  Sonne. 

C.  Chelius, 

Notbl.  Ver.  Erdk., 
XVIII,  p.  24, 1897. 

Olivine-gabbro. 

or  5. 0 
ab  34.  6 
an  32. 0 

di 

hy 

ol 

mt 

10.2 

4.5 
8.7 

3.5 

Ernsthofen, 

Odenwald, 

Hesse. 

W.  Sonne. 

C.  Chelius, 

Notbl.  Ver.  Erdk., 
XVIII,  p.  15, 1897. 

Luciite- 

porphvrite. 

Ci.  H.  Rosen  - 
busch, 

•  Elemente, 
p.  228,  1900. 

FeSo 

0.19 

or  1. 7 
ab  35. 1 
an  31.7 
ne  4.8 

di  6.0 
ol  7. 9 
mt  10. 8 
ap  1. 1 

Frankenstein, 

Odenwald, 

Hesse. 

R.  Marzahn. 

Chelius  and  Klemm, 

Erl.  G.  Kt.  Hessen,  X, 
p.  39, 1896. 

Beerbachite. 

S 

0. 09 

or  3.3 
ab  36.2 
an  22. 5 
ne  2. 0 

di 

ol 

mt 

il 

10.3 
8.9 

11.4 
3.4 

Auermahdsattel, 

Salzkammergut, 

Tyrol. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R.-A.  Wien, 
XLIX,  p.  256,  1899. 

Diabase- 

porphyrite. 

Cl 

0.04 

Q  3.1 
or  0. 6 
ab  37. 7 
an  24. 5 

di 

hy 

mt 

hm 

13.7 

7.3 

6. 5 

3.5 

Punta  di  Zenobito, 
Capraia  Island, 

Italy. 

A.  Rohrig. 

H.  Emmons, 

Q.  J.  G.  S.,  XLIX, 
p.  143,  1893. 

Anamesite. 

Iron  oxides? 

s 

trace 

Q  3.2 
or  2.8 
ab  28.8 
an  26. 4 

di  0.7 
hy  19.0 
mt  10.7 
hm  4. 3 

Kypriano,  Laurion, 
Greece. 

R.  Lepsius. 

R.  Lepsius, 

Geol.  V.  Attika, 
Berlin,  1893,  p.  101. 

Hornblende- 

gabbro. 

Not  fresh. 

or  2.2 
ab  45. 1 
an  20. 3 
ne  2. 2 

di 

mt 

il 

ap 

16.3 

6.7 

4.5 

1.9 

Porto  Grande, 

St.  Vincente, 

Cape  Verde  Islands. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R.-A.  Wien, 

XLVI,  p.  287,  1896. 

* 

Diorite. 

Sum  high. 

so3 

s 

CuO 

0. 20 

0.02 

0. 10 

Q  2.5 
or  4.4 
ab  32. 0 
an  25. 0 

di 

hy 

mt 

il 

hm 

18.4 

0.6 

4.9 

7.2 

4.3 

Mount  Kohala, 
Hawaii. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S.,  II, 
p.  424,  1896. 

Basalt. 

Ignited. 

h2o+=i.oo. 

H20— =0.98. 

so3 

s 

CuO 

0.06 

0.05 

0.17 

Q  0.3 
or  5. 0 
ab  33. 0 
an  28.  9 

di 

hy 

mt 

il 

hm 

ap 

6. 3 
6.3 
6. 7 
10.0 
1.6 
1.2 

Waianae,  Oahu, 
Hawaii. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S.,  II, 
p.  424,  1896. 

Basalt. 

Ignited. 
H,O+=2.00. 
H20— =1.75. 

286  CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE— Continued. 

RANG  4.  DOCALCIC.  HESSASE. 


No. 

Si()2 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h20+ 

H20- 

co.2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

48.  75 

17.  97 

0.  41 

13. 62 

3.39 

8.  82 

1.63 

2.  40 

0.  60 

trace 

0.  99 

0.  68 

0.91 

100. 17 

2.  985 

A2.  II 

.813 

.  176 

.003 

.189 

.085 

.157 

.026 

.025 

.012 

.005 

.013 

2 

48.  80 

20.  50 

4.  20 

6.  35 

8.65 

8.  15 

1.52 

1.40 

1.00 

100.  57 

A3.  Ill 

.813 

.201 

.026 

.089 

.216 

.145 

.024 

.015 

3 

48. 10 

20. 10 

3.  71 

6.  45 

7.61 

9.  45 

2. 10 

2.50 

1.20 

101. 27 

C3.  V 

.802 

.197 

.023 

.090 

.190 

.  169 

.034 

.026 

RANG  4.  DOCALCIC.  HESSASE. 


i 

52.  60 

18. 45 

2.  47 

6.  11 

4.  22 

7.55 

3.  24 

1.12 

2.  53 

1.11 

0.  20 

0.  23 

99.  83 

A2.  II 

.877 

.181 

.015 

.085 

.106 

.135 

.052 

.011 

.013 

.001 

.003 

2 

43.  73 

20.17 

4.32 

6. 93 

3.91 

10.  99 

2.  42 

.  1.45 

1.02 

0.  08 

4.  23 

0. 15 

trace 

99.  40 

3.058 

B2.  Ill 

.729 

.198 

.027 

.097 

.098 

.196 

.039 

.015 

.053 

.001 

11° 

3  j 

56.  94 

20.  82 

0.  83 

3.  02 

2.  36 

9.41 

3.  36 

1.58 

0.59 

0.  21 

0.  45 

0.  44 

0.  07 

0.11 

0.  05 

100.  24 

Al.  I 

.949 

.204 

.005 

.042 

.059 

.168 

.054 

.017 

.005 

.001 

.002 

— 

4 

53. 18 

23.  25 

1.  53 

1.82 

2.  60 

11.18 

3.  97 

0.  86 

0.  98 

0.15 

0.  34 

0.  45 

0. 09 

0. 11 

trace? 

100.  51 

A2.  II 

.886 

.228 

.009 

.025 

.  065 

.200 

.064 

.009 

.006 

.001 

.002 

— 

5 

47.88 

18.  90 

1.39 

10. 45 

7. 10 

8.  36 

2.  75 

0.81 

0.  43 

0. 18 

0. 12 

1.20 

0.  20 

0.16 

trace 

100. 02 

Al.  I 

.  798 

.185 

.009 

.145 

.178 

.149 

.044 

.008 

.015 

.001 

.002 

' 

6 

43.  42 

22.  37 

0. 81 

9.25 

5.  75 

13.  34 

1.24 

1. 13 

1.54 

0.  09 

1.25 

0. 10 

0.  06 

100.  35 

A2.  II 

.724 

.219 

.005 

.129 

.144 

.238 

.020 

.012 

.016 

.001 

.001 

7 

51.52 

19.  77 

0. 47 

6.  77 

6. 49 

8. 16 

2.66 

0.  70 

1.68 

1.39 

0. 10 

99.  71 

2.  832 

A2.  II 

.859 

.194 

.003 

.094 

.162 

.146 

.043 

.007 

.017 

.001 

8 

44.  92 

18.  88 

2.  73 

13.  76 

5.38 

9.07 

2.  94 

0.  53 

1.62 

0.  20 

0.  26 

100.  29 

A3.  Ill 

.749 

.185 

.017 

.191 

.135 

.161 

.047 

.005 

.004 

9 

49.  80 

19.96 

6.  32 

0.  49 

7.  05 

11.  33 

2.  22 

0.  61 

1.71 

0. 13 

0. 15 

0.  79 

0. 07 

100.  63 

A2.  II 

.830 

.195 

.039 

.007 

.176 

.201 

.  035 

.006 

.010 

.001 

10 

49.  88 

18.  55 

2.  06 

8.  37 

5.  77 

9.  72 

2.59 

0.  68 

1.04 

1. 19 

0. 16 

0. 09 

0.  02 

100. 12 

2.  923 

Al.  I 

.831 

.182 

.013 

.117 

.144 

.173 

.042 

.007 

.015 

.001 

.001 

— 

11 

48.29 

20.  87 

1.13 

4.  93 

7.  54 

14.  32 

1.  77 

0.  38 

0.  89 

100. 12 

A3.  Ill 

.805 

.204 

.007 

.068 

.189 

.  255 

.029 

.004 

12 

46.  45 

21.30 

0.  81 

9.57 

7.90 

9.  83 

2.  14 

0.  34 

1.02 

0.  14 

1. 19 

0.  02 

trace 

100.  75 

A2.  II 

.774 

.209 

.005 

.134 

.195 

.175 

.034 

.003 

.015 

— 

— 

13 

47.  90 

19.  92 

4.92 

9.  78 

4.  55 

8.  56 

2.  75 

0.  56 

0.  76 

0.  57 

none 

100. 39 

2.  93 

A2.  II 

.798 

.195 

.031 

.137 

.114 

.152 

.044 

.006 

.007 

— 

DOSALANE - HESSOSE. 


287 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 

SUBRANG  2.  SODIPOTASSIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

S  trace 

or  13.9  di  0.5 
ab  13. 6  hy  15. 6 
an  48.1  ol  11.7 
mt  0. 7 
il  1.8 

Pine  Hill,  Medford, 
Massachusetts. 

R.  C.  Sweetser. 

W.  H.  Hobbs, 

B.  M.  C.  Z..  XVI, 
p.  9,  1888. 

Diabase. 

Q  0.6  hy  30.0 
or  8. 3  mt  6. 0 
ab  12.  6 
an  40. 3 

C  1.7 

Vail  fie  de  Valbonne, 
Pyrenees  Mts., 
France. 

A.  Pisani. 

A.  Lacroix, 

B.  S.  C.  G.  Fr.,  XI, 
No.  71,  p.  31,  1900. 

Mica-diorite. 

or  14. 5  di  7.  3 
abl6. 8  ol  17.6 
an  38. 1  mt  5. 3 
ne  0. 6 

Vallee  de  Val  bonne, 
Pyrenees  Mts., 
France. 

A.  Pisani. 

A.  Lacroix, 

B.  S.  C.  G.  Fr.,  XI, 
No.  71,  p.  31,  1900. 

Mica-diorite. 

Remarks. 


A1203  high? 


A12Os  high? 
Sum  high. 


SUBRANG  3.  PRESODIC.  HESSOSE. 


Q  5.0 

di 

3.9 

or  6. 1 

hy 

16.2 

ab  27. 2 

mt 

3.5 

an  32. 8 

il 

2.0 

or  8.3 

di 

11.9 

ab  17. 8 

ol 

4.  6 

an  40. 0 

mt 

6.3 

ne  1.4 

il 

8.2 

s 

trace 

Q.  7.9 

di 

8.1 

Cr203 

trace 

or  9. 5 

hy 

6.2 

NiO 

trace 

ab  28. 3 

mt 

1.2 

SrO 

trace 

an  37.0 

il 

0.8 

Li,0 

trace 

S 

trace 

Q  1.0 

di 

10.1 

or  5. 0 

hy 

3.1 

ab  33. 5 

mt 

2.1 

an  43. 1 

il 

0.9 

S 

0.07 

or  4. 4 

di 

3.6 

Cr203 

trace 

ab  23.1 

hy 

10.7 

v2o3 

trace 

an  37. 0 

ol 

15.6 

NiO 

0.02 

mt 

2.1 

SrO 

trace 

il 

2.3 

Cr203 

trace 

or  6.7 

di 

11.7 

LUO 

trace 

ab  5.2 

ol 

16.3 

an  52. 0 

mt 

1.2 

ne  2.8 

il 

2.5 

Q  2.0 

di 

0.5 

or  3.9 

hy 

25.7 

ab  22.5 

mt 

0.7 

an  40. 0 

il 

2.6 

or  2. 8 

di 

6.6 

ab  21.0 

ol 

24.8 

an  37. 0 

mt 

3.9 

ne  2.0 

Q  3.2 

di 

10.1 

or  3.3 

hy 

13. 2 

ab  18.3 

tn 

0.6 

an  42. 8 

il 

1.1 

hm 

6.3 

Cl 

trace 

or  3. 9 

di 

8.9 

SrO 

trace 

ab  22. 0 

hv 

21.8 

an  37. 0 

mt 

3.0 

il 

2.3 

or  2. 2 

di 

19.3 

ab  15. 2 

hy 

3.1 

an  47. 5 

ol 

10.3 

mt 

1.6 

NiO 

0.04 

or  1.7 

di 

0.8 

ab  17.8 

hv 

11.1 

an  47. 8 

ol 

16.8 

mt 

1.2 

il 

2.3 

SrO 

none 

or  3.3 

di 

2.0 

ab  23. 1 

hv 

19.8 

an  40.  0 

oi 

1.8 

mt 

7.2 

il 

1.1 

East  Clarendon, 
Vermont. 


Nahant, 

Essex  County, 
Massachusetts. 

Elizabethtown, 
Essex  County, 
New  York. 


Whiteface  Mountain, 
Adirondacks, 

New  York. 

Split  Rock  Mine, 
Westport,  Essex 
County,  New  York. 


Ilchester,  Howard 
County,  Maryland. 


Sudbury,  Ontario. 


Ottertail  Creek, 
Nipissing  district, 
Ontario. 

Crystal  Falls, 
Michigan. 


Pigeon  Point, 
Minnesota. 


Minnesota  Falls,  Yel¬ 
low  Medicine  Coun¬ 
ty,  Minnesota. 

Sec.  35,T.61N.,R.  12 
W.,  St.  Louis  Coun¬ 
ty,  Minnesota. 


Birch  Lake, 
Minnesota. 


H.  N.  Stokes. 


H.  S.  Washing¬ 
ton. 


W.  F.  Hille- 
brand. 


G.  Steiger. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


Not  stated. 


F.  G.  Wait. 


G.  Steiger. 


W.  F.  Hille- 
brand. 


A.  N.  Stokes. 


H.  N.  Stokes. 


A.  N.  Winchell. 


C.  L.  Whittle, 

B.  U.  S.  G.  S.,  148, 
p.  71,  1897. 

Hornblende- 

granite. 

Not  described. 

H.  S.  Washington, 

J.  G.,  VII, 
p.  63,  1899. 

Gabbro. 

Sum  low. 

J.  F.  Kemp 

B.  U.  S.  G.  S.,  168, 
p.  37,  1900. 

Pyroxenic  an¬ 
orthosite. 

J.  F.  Kemp, 

B.  U.  S.  G.  S.,  168, 
p.  36,  1900. 

Gabbro. 

J.  F.  Kemp, 

19A.  R.  U.S.G.S.,  III, 
p.  402,  1899. 

Gabbro. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  673,  1895. 

Gabbro-diorite. 

Near  corsase. 

T.  L.  Walker, 

Q.  J.  G.  S.,  LIII, 
p.  56,  1897. 

Diabase. 

G.  C.  Hoffman, 

A.  R.  G.  S.  Can.,  IX, 
p.  20  R,  1898. 

Diorite-gneiss. 

J.  M.  Clements, 

J.  G.,  VI, 
p.  381,  1898. 

Hornblende- 

gabbro. 

Also  in  M.  U.  S. 
G.S., XXXVI, 
p.  242,  1899. 

W.  S.  Bayley, 

A.  J.  S.,  XXXVII, 
p. 61,  1889. 

W.  S.  Bayley, 

B.  U.  S.  G.  S.,  150, 
p.  372,  1898. 

Olivine-gabbro. 

Gabbro-gneiss. 

Dried  at  105°. 
Also  in  B.  U.  S. 
G.  S.,  109,  p. 
37,  1893. 

W.  S.  Baylev, 

J.  G.,  I, 
p.  712,  1893. 

Gabbro. 

A.  N.  Winchell, 

A.  G.,  XXVI, 

p.  374,  1900. 

» 

Diabase. 

Incorrect  on  p. 
184,  loc.  cit. 

288 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS. 


CLASS  II.  DOSALANE— Continued. 

RANG  4.  DOCALCIC.  HESSASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

14 

47.  70 

19.  04 

0.  87 

8.  84 

8.65 

8.96 

2.  53 

0. 53 

1.38 

• 

1.80 

trace 

none 

100. 30 

2.  89 

A2.  II 

.  795 

.186 

.006 

.123 

.216 

.160 

.040 

.005 

.022 

— 

15 

48.  49 

18.35 

7.  63 

1.21 

6.  72 

10.  40 

3.  02 

0.57 

0.  67 

2.19 

0.  20 

99.  99 

A2.  II 

.808 

.180 

.048 

.015 

.168 

.185 

.048 

.006 

.026 

.001 

16 

52.05 

17.96 

4.09 

6.  33 

5.  03 

8.  64 

2.  99 

1.61 

0.  97 

0.31 

0.  43 

100.  41 

2.  891 

A3.  Ill 

.868 

.176 

.  025 

.088 

.  126 

.154 

.048 

.017 

.002 

.006 

13.5° 

17 

50.  23 

19.  46 

4.21 

4.  20 

3.59 

10.  39 

3.08 

1.32 

1.01 

0. 16 

0.  25 

1.30 

0.41 

0.  07 

0.  04 

99.  74 

Al.  I 

.837 

.191 

.026 

.058 

.090 

.  185 

.050 

.014 

.016 

.003 

.001 

— 

18 

51.  98 

15.  99 

3. 10 

5.  88 

5.  09 

9.68 

2.  71 

0.  81 

2.  08 

0.  48 

1.  71 

0.31 

0. 10 

0.  03 

99.  96 

Al.  I 

.867 

.  157 

.019 

.082 

.127 

.173 

.043 

.009 

.021 

.002 

.001 

_ 

• 

19 

48.58 

20.  23 

1.26 

3.02 

7.  59 

14.01 

2.  25 

0. 19 

2.  68 

0.  28 

0.  09 

trace 

trace 

none 

100.  25 

Al.  I 

.810 

.198 

.008 

.042 

.190 

.  250 

.036 

.002 

.001 

20 

55. 14 

19. 10 

6. 16 

0.  54 

4.23 

8.  36 

3.  71 

1.04 

0.91 

0.  52 

0.  18 

0.11 

trace 

100. 07 

Al.  I 

.919 

.187 

.039 

.007 

.106 

.150 

.059 

.011 

•  .007 

.001 

.002 

— 

21 

53.  85 

18.  53 

1.96 

5.30 

5.  88 

9.  66 

2.  98 

0.  74 

0.  45 

0.50 

0.  05 

0.12 

0.  03 

100. 09 

Al.  I 

.898 

.181 

.012 

.074 

.147 

.172 

.048 

.008 

.006 

— 

.002 

— 

22 

53.  35 

19.  22 

3.  28 

4.48 

4.  86 

9.  76 

2.  89 

0.  99 

0.  77 

0.56 

0. 10 

0. 15 

trace? 

100. 44 

Al.  I 

.889 

.188 

.020 

.076 

.122 

.174 

.047 

.011 

.007 

.001 

.002 

— 

23 

52.  95 

18.  25 

4.  36 

4.  19 

4.  93 

8.  73 

3.  57 

0.  77 

1.47 

0.  66 

trace 

0. 12 

0.01 

100.  01 

Al.  I 

.883 

179 

.027 

.058 

.123 

.155 

.  058 

.008 

.008 

— 

.002 

— 

24 

47.  94 

18.  90 

2.21 

8.59 

8.21 

9.  86 

2.  81 

0.  29 

0.  74 

0.  39 

0.  57 

0. 15 

trace 

none 

100.  66 

Al.  I 

.799 

.185 

.014 

.120 

.205 

.176 

.045 

.003 

.007 

.001 

— 

25 

56.  88 

18.  25 

2.:a 

4.  45 

4.  07 

7.53 

3.  29 

1.42 

0.50 

0.  24 

0.  45 

0.30 

0. 18 

0.11 

ICO.  06 

Al.  I 

.948 

.179 

.015 

.062 

.102 

.134 

.053 

.015 

.  006 

.002 

.003 

.001 

26 

55.  53 

17.  63 

2.81 

3.59 

5.  85 

8.  74 

3.09 

0.  92 

' 

1.24 

0.  56 

0.21 

0.  08 

0.  02 

100. 33 

Al.  I 

.926 

.173 

.017 

.050 

.  146 

.158 

.0.50 

.010 

.007 

.002 

.001 

— 

27 

53.91 

17.  95 

2.  21 

4.80 

5.52 

10.  40 

2.  90 

1.34 

0.  20 

0.  20 

0.52 

0.21 

0.10 

0.  05 

100.31 

Al.  I 

.899 

.176 

.014 

.  067 

.138 

.185 

.047 

.015 

> 

.006 

.002 

'  .001 

— 

28 

52.81 

16.  60 

2.  66 

6. 13 

6. 12 

10. 14 

2.  79 

1 . 05 

0.  54 

0.  38 

0.  84 

0.  23 

0.03 

100.  32 

Al.  I 

.880 

.163 

017 

.085 

.153 

.181 

.045 

.011 

.010 

.002 

— 

29 

51.21 

17.  59 

4.71 

4.  42 

7.  12 

10.36 

2..  49 

0.91 

1.07 

0.  58 

0.31 

0.09 

trace 

none 

100.  86 

Al.  I 

.854 

.172 

.029 

.061 

.178 

.  185 

.040 

.010 

.004 

.001 

— 

— * 

30 

48.  76 

16.60 

5.  60 

5.01 

6.  93 

8.  79 

2.47 

0.  66 

2. 19 

1.49 

0.  42 

1.26 

0. 19 

0.10 

100.  37 

2.  78 

Al.  I 

.813 

.163 

.  035 

.070 

.183 

.  157 

.040 

.007 

.016 

.001 

.001 

DOS  A  LANE - HESSOSE. 


289 


ORDER  5.  PERFELIC.  GERM  AN  ARE — Continued. 


Sl’BRANG  3.  PRESODIC.  HESSOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO 

none 

or  2.8 
ab  21.0 
an  39.  2 

di  4. 5 
hv  12.7 
ol  13.9 
mt  1.4 
il  3. 4 

Birch  Lake, 
Minnesota. 

11.  N.  Stokes. 

A.  N.  Winehell, 

A.  G.,  XXVI, 
p.  181, 1900. 

Olivine-gabbro. 

SO* 

LioO 

0.52 

0.02 

Q  0.3 
or  3. 3 
ab  25.2 
an  35. 0 

di  10.4 
hy  12.0 
tn  2.2 
il  2. 3 
hm  7.6 

Prospect  Peak,  Yel¬ 
lowstone  National 
Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 
M.U.S.G.S., XXXII, 
II,  p.  438,  1899. 

Basalt. 

Same  as  No.  31 
auvergnose, 
calc,  to  100% 
after  deduct- 

ing  iron. 

Q  0.9 
or  9.5 
ab  25. 2 
an  33.4 

di  7. 8 
hy  17.0 
mt  5. 8 

Stony  Mountain, 
Ouray  County, 
Colorado. 

L.  G.  Eakins. 

W.  Cross, 

B.  U.S.  G.  S.,  148, 
p.  180,  1897. 

Augite-diorite. 

Not  described. 

S 

SrO 

Li,>0 

0.02 

trace 

trace 

Q  2.6 
or  7.8 
ab  26. 2 
an  35.  3 

di  11.0 
hy  6.1 
mt  6. 0 
il  2.5 
ap  1. 0 

Yentna  River, 

Alaska. 

H.  N.  Stokes. 

J.  E.  Spurr, 

A.  G.,  XXV, 
p.  233, 1900. 

Augite-belugite. 

S 

Cr203 

NiO 

SrO 

Li20 

0.01 

none 

none 

none 

trace 

Q  6.5 
or  5. 0 
ab  22. 5 
an  29. 2 

di .  15. 2 
hy  10.9 
mt  4. 4 
il  3.2 

Camas  Land, 

Kittitas  County, 
Washington. 

H.  N.  Stokes. 

G.  O.  Smith, 

B.  U.  S.  G.  S.,  168, 
p.  225,  1900. 

Olivine-diabase. 

S 

NiO 

SrO 

LioO 

0. 10 
none 
none 
none 

or  1. 1 
ab  18.9 
an  44. 5 

di  19.5 
hv  3. 1 
Ol  7. 6 
mt  2.0 

Beverley  Creek, 
Kittitas  County, 
Washington. 

H.  N.  Stokes. 

G.  O.  Smith, 

B.U.  S.  G.  S.,  168, 
p.  225,  1900. 

Gabbro. 

SrO 

LioO 

0. 07 
trace 

Q  7.6 
or  6. 1 
ab  30. 9 
an  32.5 

di  7.2 
hy  7.4 
il  1.1 
hm  6.2 

Lassen  Peak, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Hiller, 

B.  U.  S.  G.  S.,  150, 
p.  218,  1898. 

Secretion  in 
clacite. 

Dried  at  100°. 
Near  andose. 
Secretion  in 
No.  40,  lassen- 

ose. 

Cr203 

SrO 

1  Li.,0 

' 

trace 

0.04 

trace 

Q  3.6 
or  4.4 
ab  25.2 
an  34. 8 

di  10.6 
hy  16.9 
mt  2.8 
il  0.9 

Crater  Peak, 
n.  Lassen  Peak, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.U.  S.  G.  S.,  148, 
p.  197,  1897. 

Hypersthene- 

andesite. 

Dried  at  110°. 
Secretion  in 
No.  46,  ton- 
alose. 

SrO 

Li.,0 

0. 03 
trace 

Q  4.0 
or  6. 1 
ab  24. 6 
an  36. 1 

di  9.9 
hy  13.8 
mt  4. 6 
il  1. 1 

Chaos,  Lassen  Peak, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.U.  S.  G.  S.,  148, 
p.  194,  1897. 

Secretion  in 
dacite. 

Dried  at  110°. 
Secretion  in 
No.  39,  lassen- 

ose. 

SO* 

SrO 

trace 

trace 

Q  4.4 
or  4. 4 
ab  30. 4 
an  31. 4 

di  9.3 
hy  10.9 
mt  6.3 
il  1.2 

Crater  Peak, 

Shasta  County, 
California. 

R.  B.  Riggs. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  200,  1897. 

Basalt. 

Dried  at  110°. 

SrO 

LioO 

none 

trace 

or  1. 7 
ab  23. 6 
an  38. 1 

di  8.9 
hy  5.9 
ol  17.0 
mt  3.2 
il  1.1 

McCloud  River, 

Mount  Shasta, 
California. 

PI.  N.  Stokes. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  190,  1897. 

Basalt. 

Not  described. 

SrO 

LioO 

0.04 

trace 

Q  9.1 
or  8.3 
ab  27.8 
an  30.9 

di  5. 3 
hy  13.2 
mt  3. 5 
il  0.8 

Franklin  Hill, 

Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

17  A.R.U.  S.  G.  S.,I, 
p.  731, 1896. 

Hypersthene- 

andesite. 

Near  bandose. 

SrO 

Li.,0 

0. 06 
none 

Q  7.4 
or  5. 6 
ab  26.2 
an  31. 4 

di  9.9 
hy  13.3 
mt  3.9 
il  1.1 

Butte  Mountain, 
Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p. 195, 1897. 

Pyroxene- 

andesite. 

Dried  at  105°. 

SrO 

LioO 

trace 

trace 

Q  2.6 
or  8.3 
ab  24.6 
an  31. 7 

di  15.8 
hy  12.4 
mt  3. 2 
il  0.9 

Mount  Ingalls, 

Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

A.  J.  S.,  XLIV, 
p.  458,  1892. 

Basalt. 

Also  in  14  A.  R. 
U.S.G.  S.,II, 
p.  492,  1894. 

SrO 

LioO 

trace 

trace 

Q  2.7 
or  6.1 
ab  23. 6 
an  29. 7 

di  16.7 
hy  14.9 
nit  3. 9 
il  1.5 

Mount  Ingalls, 

Plumas  County, 
California. 

W.  F.  Hille- 
brand. 

H.  W.  Turner, 

14A.R.  U.  S.  G.  S.,II, 
p.  492,  1894. 

Basalt. 

Near  auvergn¬ 
ose. 

Li20 

none 

Q  2.5 
or  5. 6 
ab  21.0 
an  33. 9 

di  14. 1 
hy  15.0 
mt  6.7 
il  0.6 

Franklin  Hill, 

Plumas  County, 
California. 

G.  Steiger. 

II.  W.  Turner, 

17  A.  R.  U.  S.  G.  S.,  I, 
p.  734,  1896. 

Olivine-basalt. 

Q  3.9 
or  3.9 
ab  21. 0 
an  32.2 

di  9.2 
hy  16.8 
mt  8. 1 
il  2.3 

Dardanelles, 

Stanislaus  County, 
California. 

G.  Steiger. 

1 

F.  L.  Ransome, 

B.  U.  S.  G.  S.,  89, 
p.  58,  1898. 

Basalt. 

Not  fresh. 

14128— No.  14—03 - 19 


290 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE— Continued. 

RANG  4.  DOCALCIC.  HESSASE— Continued. 


No. 

Si02 

A1,0, 

Fe2G3 

FeO 

MgO 

C'aO 

Na20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

31 

47.27 

20.  82 

1.85 

4.  26 

6.  44 

13.  02 

2.  75 

0.  22 

1.27 

0.  08 

none 

0.  92 

0.  74 

trace 

none 

99.  86 

Al.  I 

.788 

.204 

.012 

.059 

.161 

.233 

.044 

.002 

.011 

.005 

— 

— 

32 

49.56 

20.  09 

2.  32 

2.  02 

7.01 

15.62 

1.63 

0.34 

2.25 

100.  84 

B3.  IV 

.826 

.197 

.014 

.028 

.175 

.279 

.026 

.003 

33 

50.  38 

19.  83 

6.05 

2.  00 

5.36 

10.  03 

2.15 

1. 76 

1.37 

none 

none 

0.  38 

100. 14 

A‘2.  II 

.830 

.194 

.038 

.028 

.134 

.178 

.033 

.019 

— 

— 

.005 

34 

52.  62 

21.77 

2. 13 

3.  58 

5.  68 

10. 19 

2.39 

0.25 

0.  80 

0.  04 

0.  40 

0.01 

trace 

99.  86 

2.  970 

A  2.  11 

.877 

.213 

.013 

.050 

.142 

.182 

.039 

.003 

.005 

— 

— 

35 

52.  20 

16. 10 

3.  56 

5.  68 

6.  70 

8.  58 

2.40 

0.  89 

0.  60 

0.01 

2.60 

0.  37 

0.  22 

none 

99.  94 

Al.  I 

.870 

.158 

.022 

.079 

.168. 

.153 

.039 

.009 

.033 

.002 

.003 

36 

52.00 

21.61 

3.01 

4.  06 

6.  53 

8.  80 

2.81 

0. 18 

0.  35 

— 

0.  06 

0.53 

0.01 

0.  05 

100. 00 

3.066 

A?2.  II? 

.867 

.212 

.019 

.  057 

.163 

.  157 

.045 

.002 

.007 

— 

.001 

37 

51.37 

21.  79 

3.  60 

3.  38 

6.  30 

10.  36 

2.  42 

0.06 

0.  50 

0. 10 

0.32 

trace 

0. 12 

100.32 

2.  996 

A?2.  II? 

.  .856 

.214 

.022 

.048 

.158 

.185 

.039 

.001 

.004 

— 

.002 

38 

52.8 

17.8 

1.2 

4.8 

4.8 

12.9 

•  3.0 

0.  5 

1.2 

0.5 

99.5 

2.91 

A3.  Ill 

.880 

.174 

.007 

.067 

.120 

.230 

.048 

.005 

.006 

39 

53.50 

22.  20 

3.  60 

2.  64 

2.  00 

9.45 

4.  26 

0.  61 

1.50 

0. 45 

0.  35 

100. 59 

2.  800 

A2.  II 

.892 

.218 

.022 

.037 

.050 

.169 

.069 

.006 

.006 

.005 

40 

53.  30 

20.  99 

1.66 

6.  34 

3.96 

8.51 

2.  46 

0.  93 

1. 12 

0.  32 

0.10 

99.  69 

A3.  Ill 

.888 

.205 

.010 

.088 

.099 

.151 

.040 

.010 

.001 

41 

52.60 

17.  32 

1.  72 

12.  04 

3.  25 

7.  73 

2.  62 

1.49 

1.16 

0. 14 

0. 15 

100.  22 

A3.  Ill 

.877 

.170 

.011 

.167 

.081 

.137 

.042 

.016 

.001 

42 

49.  70 

22. 10 

3.17 

5.  95 

4.97 

9.31 

2.  32 

1.75 

0.  75 

100.  02 

A3.  Ill 

.828 

.217 

.020 

.083 

.124 

.166 

.,037 

.019 

43 

49.  45 

20.41 

1.34 

9.  51 

5.34 

9.96 

2.  73 

0.  20 

0.  70 

0.  32 

99.  96 

A3.  Ill 

.824 

.200 

.008 

.133 

.134 

.178 

.043 

.002 

.004 

44 

49.  30 

21.60 

2.  28 

7.26 

7.  82 

10.  20 

2.  15 

0.  29 

0. 10 

101.00 

2.97 

B3.  IV 

.822 

.212 

.014 

.101 

.196 

.182 

.035 

.003 

45 

51.32 

17.  84 

4.  34 

6.  70 

4. 18 

9.51 

3.01 

1.52 

1.98 

100. 50 

A3.  Ill 

.855 

.175 

.027 

.092 

.105 

.169 

.048 

.016 

46 

47.97 

22. 16 

1. 12 

4.  10 

4.  58 

11.96 

3.  23 

0.  29 

2.  05 

0.15 

0.  44 

1. 14 

99.  54 

A2.  II 

.800 

.218 

.007 

.  057 

.115 

1 

.213 

.051 

.003 

.005 

.008 

47 

45.94 

21. 16 

2.21 

7. 14 

7.  80 

10.  49 

3.21 

1. 14 

1.02 

100. 11 

2.  982 

A3.  Ill 

.  766 

.207 

.014 

.099 

.195 

.187 

.052 

.012 

DOSALANE - HESSOSE. 


291 


ORDER  5.  PERFELIC.  GERM ANARE— Continued. 


SUBRANG  3.  PRESODIC.  HESSOSE — Continued. 


Inclusive. 

Norm. 

FeSo 

0.20 

or 

1.1 

di 

12.9 

C1063 

trace 

ab 

23.1 

by 

2.2 

V.O* 

0.02 

an 

43.9 

ol 

9.0 

NiO 

none 

mt 

2.8 

SrO 

trace 

il 

1.7 

Li20 

none 

ap 

1.7 

Q 

1.1 

di 

24.4 

or 

1.7 

hv 

7.7 

ab 

13.6 

mt 

3.2 

an 

46. 7 

S03 

0.83 

Q 

3.8 

di 

7.7 

Li.,0 

trace 

or 

10.6 

hy 

9.9 

ab 

17.3 

mt 

6.5 

an 

39.5 

hm 

1.6 

S 

trace 

Q 

5.3 

hy 

18.1 

or 

1.7 

mt 

3.0 

ab 

20.4 

il 

0.8 

an 

50.3 

ZrO., 

none 

Q 

8.0 

di 

9.4 

Cl 

trace 

or 

5.0 

hv 

15.9 

FeS2 

0.03 

ab 

20.4 

mt 

5.1 

CuO 

trace 

an 

30.6 

il 

5. 1 

s  . 

trace 

Q 

4.3 

hy 

20.5 

or 

1.1 

mt 

4.4 

ab 

23.6 

il 

1.1 

an 

43.6 

c 

0.8 

s 

trace 

Q 

5.8 

di 

2.4 

or 

0.6 

hy 

17.6 

ab 

20.4 

mt 

5.1 

an 

48.4 

il 

0.6 

Q 

2.2 

di 

24.8 

or 

2.8 

hy 

7.0 

ab 

25.2 

mt 

1.6 

an 

33.6 

il 

0.9 

Q 

4.2 

di 

5.8 

or 

3.3 

hy 

3.4 

ab 

36.2 

mt 

5.1 

an 

39.8 

il 

0.9 

Q 

6.5 

hy 

20.2 

or 

5.6 

mt 

2.3 

ab 

21.0 

an 

42.0 

c 

0.4 

Q 

2.6 

di 

5.8 

or 

8.9 

hy 

25.7 

ab 

22. 0 

mt 

2.6 

an 

31.1 

or 

10.6 

di 

1.1 

ab 

19.4 

by 

15.3 

an 

44.8 

ol 

3.6 

mt 

4.6 

or 

1.1 

di 

5.3 

ab 

22.5 

hy 

18.6 

an 

43.1 

ol 

6.4 

mt 

1.9 

or 

1.7 

di 

1.8 

ab 

18.3 

by 

20.4 

an 

48.4 

oi 

7.0 

mt 

3.2 

Q 

1.3 

di 

13.4 

or 

8.9 

by 

12.4 

ab 

25.2 

mt 

6.2 

an 

30.9 

Fe32 

0.35 

or 

1.7 

di 

5.0 

ab 

26.7 

hv 

7.7 

an 

45.6 

ol 

5.3 

mt 

1.6 

il 

0.8 

ap 

2.0 

I 

or 

6.7 

di 

7.3 

ab 

18.9 

ol 

18.8 

an 

39.8 

mt 

3.2 

1  ne 

4.5 

Locality. 

Analyst. 

Beaver  Creek, 
Tuolumne  County, 
California. 

H.  N.  Stokes. 

Point  Sal,  Santa  Bar¬ 
bara  County,  Cali¬ 
fornia. 

H.  W.  Fair¬ 
banks. 

Richmond  Mountain, 
Eureka  District, 
Nevada. 

J.  E.  Whitfield. 

Potaro  River, 

British  Guiana. 

Assistant  of  J. 
B.  Harrison. 

Mazaruni  District, 
British  Guiana. 

J.  B.  Harrison. 

Essequibo  River, 
British  Guiana. 

Assistant  of  J. 
B.  Harrison. 

Essequibo  River, 
British  Guiana. 

Assistant  of  J. 
B.  Harrison. 

Druim  an  Eidhne, 
Island  of  Skye, 
Scotland. 

J.  H.  Player. 

Carrock  Fell,  Eng¬ 
land. 

G.  Barrow. 

Eycott  Hill,  Lake 
District,  England. 

J.  Hughes. 

Eycott  Hill,  Lake 
District,  England. 

J.  Hughes. 

Vallee  de  Valbonne, 
Pyrenees,  France. 

A.  Pisani. 

Pallet,  Loire  Infer., 
France. 

A.  Lacroix. 

Pallet,  Loire  Infer., 
France.. 

A.  Pisani. 

Luciberg,  Odenwald, 
Hesse. 

F.  Kutscher. 

Oberbeerbach,  Hesse. 

W.  Sonne. 

Veitenfeld,  Kreuz-  E.  v.  Seyfried. 
berg,  Rhongebirge. 


Reference. 


H.  W.  Turner, 
A.  J.  8.,  VII, 
p.  297,  1899. 


H.  W.  Fairbanks, 

B.  Dep.  G.Un.Cal.,II, 
p.  50,  1896. 

Hague  &  Iddings, 

M.  U.  S.  G.  S.,XX, 
1892. 


J.  B.  Harrison, 

Rep.  G.  Esseq.  River, 
1900,  p.  63. 


J.  B.  Harrison, 
Priv.  Contrib. 


J.  B.  Harrison, 

Rep.  G.  Esseq.  River, 
1900,  p.  63. 

J.  B.  Harrison, 

Rep.  G.  Esseq.  River, 
1900,  p.  64. 


Geikie  and  Teall, 
Q.  J.  G.  S.,  L, 
p.  653,  1894. 

A.  Harker, 

Q.  V.  G.  S.,  L, 
p.  323,  1894. 

Ward, 

Micr.  Jour., 
1887,  p.  246ff. 


Ward, 

Micr.  Jour., 

1887,  p.  246ff. 

A.  Lacroix, 

B.  S.  C.  G.  Fr., 

XI,  No.  71,  p.  31, 1900. 

A.  Lacroix, 

B.  S.  C.  G.  Fr., 

XI,  No.  77,  p.  23, 1899. 

A.  Lacroix, 

B.  S.  C.  G.  Fr., 

XI,  No.  77,  p.  23, 1899. 

C.  Chelius, 

Nbl.  Ver.  Erdk., 
XIII,  p.  10,  1892. 

C.  Chelius, 

Nbl.  Ver.  Erdk., 
XVIII,  p.  24,  1897. 


E.v.  Sevfried,  cf.  N.  J., 
1898,  II,  p.  61. 


Author’s  name. 


Gabbro. 


Gabbro. 


Basalt. 


Diabase. 


Diabase-gabbro. 


Diabase. 


Diabase. 


Gabbro. 


Quartz-gabbro. 


Lava. 


Lava. 


Mica-diorite. 


Gabbro. 


Gabbro. 


Luciite. 


Gabbro. 


Basalt. 

# 


Remarks. 


A1203  high? 


Dried  at  110°. 

A1203  high? 

Ti20  and  MgO 
low? 

Dried  at  110°. 

Near  marylan- 
dose. 

Dried  at  110°. 

A1203  high? 

Ti20  and  MgO 
low? 

Dried  at  110°. 

A1203  high? 

Ti02  and  MgO 
low? 

“  Light  band.” 

One  decimal. 


Cf.  J.  J.H.Teall. 
Br.  Petr.,p. 
228,  1888. 
A1203  high? 

Cf.  J.  J.H.Teall, 
Br.  Petr.,  p. 
228,  1888. 


Sum  high. 


A12Os  high? 


292 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE— Continued. 


RANG  4.  DOCALCIC.  HESSASE— Continued. 


No. 

SiO, 

AlA 

Fo,03 

FeO 

MgO 

CaO 

Na2D 

k2o 

h2o+ 

ILO- 

C02 

Ti02 

1‘A 

MnO 

BaO 

Sum 

Sp.  gr. 

48 

49.  94 

18.  86 

1.47 

7. 12 

5.  61 

8.54 

2.50 

1.62 

2.  77 

0.  23 

0.  63 

99.  29 

2.  88 

B3.  IV 

.832 

.  185 

.009 

.099 

.140 

.152 

.040 

.017 

.009 

49 

49.  46 

19.  82 

5.  69 

5.  82 

1.93 

10.62 

3.38 

0.  71 

0.  06 

0.31 

1.88 

99.  68 

A3.  Ill 

.824 

.195 

.035 

.080 

.047 

.189 

.055 

.008 

.023 

50 

49.  95 

19.17 

4.  72 

6.  71 

5.03 

9.  61 

3. 13 

0.  74 

0.09 

0.  69 

trace 

99.84 

2.  939 

A3.  Ill 

.833 

.188 

.029 

.093 

.126 

.171 

.050 

.007 

.009 

— 

15° 

51 

50.  56 

17.  67 

1.04 

8.  79 

4.  77 

8.25 

3.23 

0.  93 

0. 19 

0.  20 

2.  43 

0.  34 

0.  25 

99.  21 

Bl.  II 

.843 

.173 

.006 

.122 

.119 

.147 

.052 

.010 

.030 

.002 

.004 

52 

49. 13 

18.  48 

0.  41 

11.69 

5.  77 

7.  42 

3.  08 

1.09 

0.07 

0.  06 

1.61 

0.  34 

0. 15 

99.  53 

Al.  I 

.819 

.181 

.003 

.162 

.144 

.132 

.050 

.012 

.020 

.002 

.002 

53 

49.  05 

19.84 

3.46 

8.  62 

2.51 

8.  95 

2.  92 

0.  53 

2.  34 

1.96 

0.21 

100.  44 

A2.  II 

.818 

.194 

.022 

.120 

.063 

.160 

.047 

.006 

.024 

.002 

54 

52.  03 

20.57 

1.60 

6.97 

5.  39 

7.80 

2.  37 

1.34 

1.27 

0.  26 

99.  60 

2.  855 

A3.  Ill 

.  867 

.201 

.010 

.097 

.145 

.139 

.039 

.014 

RANG  5.  PERCALCIC.  CORSASE. 


1 

44.04 

20.  01 

4.  22 

8.  61 

5.  01 

11.68 

1.24 

0. 15 

1.90 

0. 11 

none 

2.  24 

0.  52 

0.  28 

none 

100.  42 

Al.  I 

.734 

.196 

.026 

.120 

.125 

.209 

.020 

.002 

.028 

.003 

.004 

— 

2 

43.  41 

23. 15 

3.  72 

4.  39 

7.  65 

14.27 

0.  82 

0.  22 

1.53 

0.18 

0.10 

0.39 

0.  02 

0.08 

none 

100.  09 

Al.  I 

.724 

.226 

.023 

.061 

.191 

.255 

.013 

.002 

.005 

— 

.001 

— 

3 

42.  92 

26.  42 

3.  97 

2.  81 

7.  26 

15.40 

0.  63 

trace 

0.  80 

100.  21 

A3.  Ill 

.715 

.259 

.025 

.039 

.182 

.272 

.009 

— 

CLASS  II.  DOSALANE. 

RANG  1.  PERALKALIO.  LAURDALASE. 


1 

51.75 

14.  52 

5.08 

3.  58 

4.  55 

7.04 

2.  93 

7.61 

2.  25 

0.  23 

0. 18 

trace 

0.  30 

100. 14 

Al.  I 

.863 

.142 

.035 

.050 

.114 

.126 

.047 

.081 

.003 

.001 

— 

.002 

RANG  1.  PERALKALIO.  LAURDALASE. 


1 

53.  09 

21.16 

1.  89 

2.  04 

0.  32 

3.30 

6.  86 

8.42 

1.  13 

0.  24 

0.  82 

0.11 

0. 15 

0.  20 

0.  61 

100.  48 

2.  599 

Al.  I 

.885 

.198 

.012 

.028 

.008 

.059 

.ill 

.089 

.001 

.001 

.003 

.004 

26° 

2 

52.91 

19.  49 

4.  78 

2.  05 

0.  29 

2.  47 

7. 13 

7.88 

1.19 

none 

none 

trace 

0.  44 

100.  25 

Al.  I 

.882 

.191 

.030 

.029 

.007 

.045 

.114 

00 

-o 

— 

— 

.006 

3 

57.  63 

17. 53 

3.  46 

1.18 

0.  22 

1.35 

5.  80 

9. 16 

3.  22 

0.  23 

trace 

trace 

99.  86 

A2.  II 

.961 

.172 

.022 

.016 

.006 

.024 

.094 

.098 

.003 

— 

— 

DOS  ALANE - JU  DITHOSE. 


293 


ORDER  5.  PERFELIC.  GERMANARE— Continued. 

?  SUBRANG  3.  PRESODIC.  HESSOSE— Continued 


Inclusive. 

Norm. 

or 

9. 5 

di 

5.6 

ab 

21.0 

by 

18.8 

an 

35.6 

ol 

3.2 

mt 

2.1 

Q 

3.4 

di 

12.8  f 

or 

4.4 

hv 

1.4 

ab 

28.8 

mt 

8.1 

an 

36.7 

il 

4.5 

Q 

0.4 

di 

9.2 

or 

3.9 

hy 

15. 5 

ab 

26. 2 

mt 

6. 7 

an 

36.4 

il 

1.4 

Cl 

0.11 

Q 

0.4 

di 

8.3 

s 

0.20 

or 

5.6 

by 

19.3 

X 

0.25 

ab 

27.2 

mt 

1.4 

an 

30.9 

il 

4.5 

Cl 

0.08 

or 

6.7 

di 

3.1 

s 

0.15 

ab 

26. 2 

by 

11.3 

an 

33.1 

ol 

14.6 

mt 

0.7 

il 

3.1 

Fe  (met)  0. 04 

Q 

3.7 

di 

4.6 

or 

3.3 

hy 

13.8 

ab 

24.6 

mt 

5.1 

an 

39.2 

il 

3.7 

Q 

2.3 

by 

25.5 

or 

7.8 

mt 

2.3 

ab 

20.4 

an 

38.6 

c 

0.9 

Locality. 


Prisednice,  n.  Zbirov, 
Bohemia. 


Ditro,  Siebenburgen, 
Hungary. 


Near  I  vrea, 
Piedmont. 


Goroschki,  Yolhynia, 
Russia. 


Gaskowskaia  Rudnja, 
Volhynia,  Russia. 


Rowno,  Yolhynia, 
Russia. 


Dargo,  Victoria. 


Analyst. 

Reference. 

Author’s  name. 

Remarks. 

F.  Schulz. 

F.  Slavik, 

cf.  N.  J.,  1901, 1,  p.  63. 

Mica-diabase. 

Sum  low. 

J.  v.  Szadec- 
zky. 

J.  v.  Szadeczky, 

cf.N.  J.,1901,I,p.  402. 

Camptonite. 

A120,  high? 

MgO  low? 

M.  Dittrich. 

F.  R.  Van  Horn, 

T.  M.  P.  M.,  XVII, 
p.  404, 1898. 

Norite. 

W.Tarassenko. 

W.  Tarassenko, 
cf.N.  J.,  1899, 1, p.463. 

Olivine-norite. 

Sum  low,  due  to 

h2o+ 

W.Tarassenko. 

W.  Tarassenko, 

cf.  N.  J.,  1899, 1,p.  463. 

Olivine-norite. 

S.  Pfaffius. 

A.  Lagorio, 

T.  M.P.  M.f  VIII, 
p.  480, 1887. 

Basalt. 

Iron  bearing. 
A1203  high? 

MgO  low? 

A.  W.  Howitt. 

A.  W.  Howitt, 
cf.N.  J.,  1889, 1,  p.  121. 

Quartz-diorite. 

SUBRANG.  NOT  NEEDED. 


ZrO.) 

FeS2 

Cr./);! 

V.,0!( 

NiO 

SrO 

0. 10 

0.25 

none 

0. 05 

0. 01 
none 

Q  2. 1  di  5. 9 
or  1.1  hy  18.6 
ab  10.5  mt  6.0 
an  48. 4  il  4.3 
ap  1. 1 

Stone  Run,  Cecil 
County,  Maryland. 

W.  F.  Hille- 
brand. 

A.  G.  Leonard, 

B.  U.  S.  G.S.,168, 
p. 45, 1900. 

Diorite. 

Not  described. 

Cl 

FeSo 

Cr..d3 

NiO 

SrO 

LioO 

trace 

0. 14 

none 

none 

none 

trace 

or  1.1  di  9. 9 
ab  6.8  hy  7.1 
an  58. 7  ol  8. 2 
mt  5. 3 
il  0.8 

ab  4. 7  di  5. 6 
an  69, 5  hy  7. 0 
ol  6.6 
mt  5. 8 

Phoenix  Reservoir, 
Tuolumne  County, 
California. 

Talaya,  Ural  Moun¬ 
tains,  Russia. 

H.  N.  Stokes. 

L. -Lessing  and 
Kultacheff. 

H.  W.  Turner, 

J.G.,  VII, 
p. 150, 1899. 

Loewinson-Lessing, 

G.  S.  K.  Jushno-Saos., 
1900,  p.  166. 

Qlivine-gabbro. 

Pyroxene- 

granulite. 

(gabbro). 

ORDER  6.  LENDOFELIC.  NORGARE. 

SUBRANG  2.  DOPOTASSIC.  PERGUSOSE. 


S03  trace 

Cl  0. 05 

SrO  0. 07 

or  45.0  di  24.7 
ab  3.1  ol  1.2 
an  3.9  mt  8.3 
ne  11.6 

Shonkin  Creek,  High- 
wood  Mountains, 
Fergus  County, 
Montana. 

E.  B.  Hurlbut. 

L.  V.  Pirsson, 

B.  U.  S.  G.S.,  148, 
p.  154,  1897. 

Pseudoleucite- 

syenite. 

SUBRANG  3.  SOD1POTASSIC.  JUDITHOSE. 


Zr02 

0.04 

or 

49.5 

di 

5.8 

so3 

none 

ab 

6.3 

WO 

4.1 

Cl 

0.02 

ne 

27.8 

mt 

2.8 

s 

0.08 

X 

0. 48 

or 

46.7 

ac 

3.2 

Cl 

0.53 

ab 

8.4 

di 

3.2 

s 

0.52 

ne 

27.8 

WO 

3.7 

SrO 

0.09 

mt 

5.3 

LiaO 

trace 

Cl 

0.08 

or 

54.5 

ac 

9.2 

Li20 

trace 

ab 

7.9 

di 

5.2 

ne 

22. 4 

mt 

0.5 

Diamond  Jo  Quarry,  H.  S.  Washing- 
Magnet  Cove,  Ar-  ton. 
kansas. 


Neasch’s  Gulley,  Mag¬ 
net  Cove,  Arkansas. 


J.  F.  Williams. 


H.  S.  Washington, 

J.  G.  IX, 
p.  611,1901. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S.,1890, 
II,  p.  287,  1891. 


Cone  Butte,  Judith 
Mountains,  Mon¬ 
tana. 


L.  X.  Pirsson. 


Weed  and  Pirsson, 
A.  J.  S.,  II, 
p.  192,  1896. 


Foyaite. 


Leucite- 

tinguaite. 


Tinguaite. 


Cf.  No. 4,  laurda- 
lose. 


Cl  high? 


Also  in  18  A.  R. 
U.S.  G.  S.  Ill, 
p.  569,  1898. 


294 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE— Continued. 
RANG  1,  PERALKALIC.  LAURDALASE— Continued. 


No. 

Si0.2 

AlA 

Fe203 

FeO 

MgO 

CaO 

Na2G 

k2o 

h2o+ 

H20- 

co2 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

4 

57.  46 

15.  40 

4.  87 

0.  87 

1.37 

2. 59 

5.  48 

9.  44 

0.  82 

.009 

0. 13 

0.  60 

0.  21 

trace 

0.  60 

100. 42 
0.  05 

Al.  I 

.958 

.151 

.030 

.012 

.034 

.046 

.088 

.100 

.008 

.002 

— 

.004 

100. 37 

5 

5J.94 

15.  78 

4.  07 

3.17 

3.  48 

6.  04 

3.  44 

7.69 

2. 17 

0.  39 

0. 59 

trace 

0. 42 

99.  83 

Al.  I 

.866 

.  155 

.025 

.044 

.087 

.108 

.055 

.082 

.005 

.004 

— 

.003 

6 

56.  06 

20.  10 

3.  82 

n.  d. 

0.  83 

2.  53 

7. 50 

8.  78 

1. 18 

100.  80 

At.  IV 

.934 

.197 

(.017) 

(.014) 

.021 

.046 

.121 

.093 

RANG  1.  PERALKALIC.  LAURDALASE. 


1 

53.  74 

14.02 

10.  63 

1.71 

1 

Trace. 

1.18 

9.02 

4.  77 

3.  40 

0.  36 

100.  96 

B2.  Ill 

.896 

.137 

.  066 

.024 

.021 

.145 

.051 

.005 

2 

52.  53 

18.31 

0.  34 

6.  43 

1.82 

3.15 

7. 26 

6. 47 

1.16 

1.59 

0. 15 

99.93 

.22 

A2.  II 

.  876 

.179 

.002 

.089 

.046 

.056 

.117 

.069 

.011 

.002 

99. 71 

3 

54.  04 

20.  27 

4.  66 

0.  64 

0. 16 

2.  75 

8.56 

6.  79 

1.93 

99.  80 

A3.  Ill 

.901 

.198 

.029 

.009 

.004 

.049 

.138 

.072 

4 

53.38 

20.  22 

1.56 

1.99 

0.  29 

3.  29 

7.  89 

6.  21 

3.  43 

trace 

100. 03 

A3.  Ill 

.890 

.198 

.010 

.028 

.007 

.059 

.127 

.066 

— 

5 

54.42 

20.  76 

2.64 

1.33 

0.22 

1.34 

10.41 

4.  89 

2.  50 

0.  22 

0.  40 

0.11 

0. 15 

0.  04 

99.  82 

2.559 

Al.  I 

.907 

.203 

.016 

.018 

.006 

.024 

.168 

.053 

.005 

.001 

.002 

19.5° 

6  ' 

47.61 

14.  26 

4.  90 

4.  07 

2.  62 

8.  71 

6.  70 

4.  08 

1.  89 

0.  26 

1.38 

1.38 

0.  30 

0.  41 

100. 68 

2.  79 

Al.  I 

.793 

.140 

.031 

.  057 

.066 

.  155 

.108 

.043 

.017 

.010 

.004 

.003 

25° 

7 

55.  90 

19.  00 

2.  05 

2.54 

1.10 

3. 12 

8.  49 

5.  41 

n.d. 

1.45 

0.  28 

99.34 

2.  642 

A2.  II 

.932 

.186 

.013 

.035 

.028 

.056 

.137 

.058 

.018 

.004 

8 

59.  88 

17.87 

2. 67 

1.50 

1.04 

2.  01 

7.  96 

5.69 

0.  90 

0.  85 

0. 32 

trace 

100.  69 

A2.  II 

.998 

.175 

.017 

.021 

.026 

.036 

.128 

.061 

.011 

.002 

9 

56.  58 

19.  89 

3.18 

0.  56 

0. 13 

1.10 

10.  72 

5.  43 

1.77 

0. 47 

99.  83 

A3.  Ill 

.943 

.195 

.020 

.008 

.003 

.020 

.173 

.058 

.007 

10 

55.  65 

20.  06 

3.  45 

1.25 

0.  78 

1.45 

8.  99 

6.  07 

1.51 

99.21 

B3.  IV 

.928 

.197 

.022 

.017 

.020 

.026 

.145 

.065 

11 

56.  35 

19.  85 

1.91 

2.  03 

1.17 

2.  60 

8.  89 

5.31 

0.  70 

1.00 

0.  67 

0.  20 

100.  68 

A2.  II 

.939 

.195 

.012 

.028 

.029 

.046 

.143 

.056 

.012 

.005 

.003 

12 

55. 18 

17.  44 

5. 56 

1.36 

0.  27 

5.10 

6.  83 

5.  48 

0.  88 

2.38 

100.  48 

A3.  Ill 

.920 

.171 

.035 

.019 

,007 

.091 

.110 

.058 

.030 

. 

13 

54.  55 

19.07 

2.41 

3.12 

1.98 

I  3.15 

7.  67 

4.  84 

0.  72 

1.40 

0.74 

0. 17 

99.82 

A2.  II 

.909 

.187 

.015 

.043 

050 

1  .056 

.124 

.051 

.017 

1  .005 

.002 

DOSALANE— LAURDALOSE. 


295 


ORDER  6.  LENDOFELIC.  NORGARE— Continued. 


SUBHANG.  SODIPOTASSIC.  JUDITHOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03  0. 13 

or  55.6  ac  13.9 

Bean  Creek,  Bearpaw 

II.  N.  Stokes. 

Weed  and  Pirsson, 

Tinguaite. 

Cl  0. 20 

F  trace 

ab  5. 8  di  8. 0 
ne  9.9  wo  1.0 

Mountains,  Mon- 

A.  J.  S.,  II, 

SrO  0. 16 

so  2.9  il  1.2 

tana. 

p.  192,  1896. 

Li«0  trace 

S03  0. 29 

or  45.6  di  16.9 

Shonkin  Creek,  High- 

W.  M.  Bradley. 

L.  V.  Pirsson, 

Trachyte. 

Cl  0. 08 

SrO  0. 28 

ab  9.4  ol  1.8 
an  5. 0  mt  5. 8 

wood  Mountains, 

B.  U.  S.  G.  S.,  148, 

ne  7.1  il  0.8 

Montana. 

p.  152,  1897. 

no  2.8  ap  1.4 

or  51. 7  ac.  7. 9 

Serra  de  Tingua, 

E.  Hussak. 

E.  Hussak, 

Foyaite. 

ab  2. 6  di  8. 0 
ne  28.1  wo  1.3 

Brazil. 

. 

N.  J.,  1892,  II, 

p.  146. 

SUBRANG  4.  DOSODIC.  LAURDALOSE. 


Zr02 

2.13 

or  28.4 
ab  16. 8 
ne  15. 3 
Z  3.1 

ac  27. 3 
di  4.7 
mt  4. 6  | 

Kangerdluarsuk, 

Greenland. 

N.  Y.  Ussing. 

H.  Rosenbusch, 
Elemente., 
p.  126,  1898. 

Lujaurite. 

Near  judithose. 
Sum  high. 

Cl 

F 

0.40 

0.32 

or  38.4 
ab  21.5 
ne  15.3 
so  5. 3 

di  2.9 
ol  11.0 
mt  0.  5 
ap  3. 6 
ft  0.8 

Alton  Township,  Clin¬ 
ton  County,  New 
York. 

E.  W.  Morley. 

H.  P.  Cushing, 

B.  G.  S.  A.,  IX, 
p.  248,  1898. 

Syenite- 

porphyry. 

Near  judithose. 

or  40. 0 
ab  15.2 
ne  27.5 

ac  5.6 
di  0. 9 
wo  5.2 
mt  2. 1 
hm  1. 1 

Neasch’s  Gulley,  Mag¬ 
net  Cove,  Ar¬ 
kansas. 

R.  N.  Brackett. 

J.  F.  Williams, 

A.R.  Ark.  G.  S.,  1890, 
II,  p.  287,  1891. 

Leucite- 

tinguaite. 

FeSo 

1.77 

or  36.7 
ab  19.9 
an  1.4 

ne  25.5 

di  6.0 
wo  3. 3 
mt  2. 3 
pr  1. 8 

Diamond  Jo  Quarry, 
Magnet  Cove, 
Arkansas. 

Brackett  and 
Smith. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S.  1890, 
II,  p.  238,  1891. 

N  e  p  h  e  1  ite- 
syenite. 

Not  fresh? 

Cf.  No.  1, 
judithose. 

Zr02 

Cl 

s 

Cr203 

NiO 

SrO 

0. 15 

0.23 

0. 01 
none 
none 
trace 

or  29.5 
ab  23. 6 
ne  30.4 

ac  7.4 
di  4. 9 
wo  0. 6 
il  0-8 

Between  Black  and 
Big  Mountains, 
Uvalde  County, 
Texas. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  62,  1900. 

Phonolite. 

Zr02 

SO:( 

Cl 

F 

S 

Crs03 

NiO 

SrO 

Li20 

0.18 

1.17 

0.  37 
trace 

0. 03 

trace 

trace 

0. 36 
trace 

or  23.9 
ab  19.  9 
an  2. 5 
ne  1. 4 
so  10.6 
no  4. 9 

di  16.7 
wo  4. 2 
mt  7.0 
il  2.6 
ap  3.3 

Two  Buttes, 

Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  182,  1897. 

Tinguaite? 

or  32.2 
ab  26.2 
ne  22. 2 

ac  4. 2 
di  7. 8 
wo  2. 5 
mt  0. 9 
il  2. 8 

Foia,  Portugal. 

G.  Pajkull. 

K.-Koschlau  and  Hack- 
man, 

T.  M.  P.  M.,  XYI, 
p.  262,  1896. 

Miea-tinguaite. 

or  33.9 
ab  36.  7 
ne  12.5 

ac  6. 5 
di  7. 8 
mt  0. 7 
il  1.7 

Sundet,  Asrum  Lake, 
Norway. 

V.  Schmelek. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  190,  1899. 

Hedrumite. 

or  32.2 
ab  25. 7 
ne  25. 0 

or  36.1 
ab  22.0 
ne  25. 6 

ac  9.2 
ns  2.0 
di  2.8 
wo  0.-8 

ac  6. 0 
di  6.1 
mt  2.1 

Hedrum,  Laugendal, 
Norway. 

Hedrum,  Laugendal, 
Norway. 

G.  Pajkull. 

V.  Schmelek. 

IV.  C.  Brogger, 

Z.  K.,  XVI, 
p.  41,  1890. 

W.  C.  Brogger, 

Eg.  Kg.,  1, 
p.  191,  1894. 

Tinguaite. 

Tinguaite. 

Border  of  dike. 
Cf.  No.  10. 

Also  in  Eg.  Kg. 

I,  p.  113, 1894. 
Center  of  dike. 
Cf.  No.  9. 

Sum  low. 

or  31.1 
ab  32. 0 
ne  22.2 

ac  1.8 
di  7. 0 
ol  0.4 
mt  1. 9 
il  1.8 
ap  1.6 

Pollen,  Farrisvand, 
Laugendal, 

Norway. 

Y.  Schmelek. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  19,  1899. 

Laurdalite. 

or  32.2 
ab  34. 1 
an  0.8 
ne  12. 8 

di  1. 5 
wo  8. 3 
il  2.9 
hm  5. 6 
pf  1. 4 

Sandefjord,  Hedrum, 
Norway. 

G.  Pajkull. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  31,  1890. 

Mica-syenite. 

MgO  low? 

Cat)  high? 

or  28.4 
ab  34.0 
an  3. 3 
ne  16.8 

di  6.0 
ol  2.5 
mt  3.5 
il  2. 6 
ap  1.7 

Love,  Laugendal, 
Norway. 

Y.  Schmelek. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  19,  1899. 

Laurdalite. 

CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


296 


CLASS  II.  DCSALANE— Continued. 


RANG  1.  PERALKALIC.  LAURDALASE — Continued. 


No. 

SiO, 

A1.A 

FeA 

FeO 

MgO 

CaO 

Na20 

K20 

HAf 

H20-  C02 

TiO, 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

14 

53.81 

19.  69 

6.  20 

3.  63 

0.85 

1.  73 

7.  77 

4.  58 

1.52 

99.  78 

• 

A3.  Ill 

.897 

.193 

.039 

.050 

.021 

.031 

.  125 

.049 

15 

51.  95 

14.  95 

4.09 

5.  70 

3.54 

6. 10 

5.  43 

4.45 

1.10 

1.95 

1. 15 

0.  30 

100.  71 

A2.  II 

.  866 

.147 

.026 

.079 

.089 

.109 

.088 

.Q47 

.024 

.008 

.004 

16 

45. 16 

15.  26 

9.  57 

4.  99 

3. 18 

2.  87 

6.57 

3.  87 

n.  d. 

6.  98 

1.54 

0.63 

100. 62 

A2.  II 

.  753 

.150 

.060 

.069 

.080 

.051 

.106 

.041 

• 

*• 

.  085 

.011 

.009 

17 

50.  26 

20. 15 

3.  67 

2.62 

1.43 

3.28 

8.09 

4.  67 

3.85 

0.24 

0.  05 

trace 

100. 18 

Al.  I 

.838 

.198 

.023 

.036 

.036 

.058 

.130 

.050 

.003 

— 

— 

18 

53.  00 

16.  47 

5.  29 

3.  10 

0.  63 

4. 15 

7.  21 

5.09 

1.68 

0.72  :  3.20 

trace 

trace 

0.37 

100.  91 

2.527 

B2.  Ill 

.883 

.161 

.033 

.043 

.016 

.074 

.116 

.  055 

— 

— 

.005 

19 

55. 10 

19.  25 

2.  77 

1.  66 

0.  83 

5. 14 

7.41 

4.  68 

2. 19 

0.40  j  0.22 

0.  48 

0.41 

0.  32 

100.  86 

2.  544 

A2.  II 

.918 

.189 

.017 

.023 

.021 

.092 

.120 

.050 

.006 

.003 

.005 

20 

57.81 

18.  74 

5.  76 

0.  42 

trace 

1.28 

9.35 

4.52 

1.50 

trace 

;  . 

99.  38 

2.  64 

B3.  IV 

.964 

.184 

.036 

.005 

— 

.023 

.151 

.048 

— 

21 

53.  73 

20.  35 

3.  74 

2. 13 

0.  47 

2.  72 

7.  94 

6.  05 

2.  02 

0.  09 

0.51 

99.98 

A2.  II 

.896 

.199 

.023 

.030 

.012* 

.048 

.128 

.065 

.001 

.007 

22 

60.  41 

17.  44 

1.98 

1.78 

1.85 

2.  79 

7.51 

5.  64 

0.  51 

99.  91 

A3.  Ill 

1.007 

.171 

.013 

.025 

.046 

.050 

.121 

.060 

RANG  2.  DOMALKALIC.  ESSEXASE. 


1 

51.35 

20.21 

4.  90 

n.  d. 

1.53 

5.  75 

4.43 

6.68 

n.  d. 

0.80 

0.28 

100.  04 

A3.  Ill 

.856 

.198 

.031 

(.062) 

.039 

.103 

.071 

.071 

.010 

.002 

2 

49.  70 

18.  45 

3.  39 

4.  32 

2.  32 

7.91 

5.33 

4.  95 

1.09 

0.  25 

1.33 

0.  40 

trace 

99.  44 

A2.  II 

.828 

.181 

.021 

.060 

.058 

.141 

.086 

.053 

.017 

.003 

— 

3 

52.  05 

15.  02 

2.  65 

5.52 

5.  39 

8. 14 

3.17 

6. 10 

0.35 

0. 47 

0.21 

trace 

0.  42 

100.  03 

Al.  I 

.868 

.147 

.017 

.  076 

.135 

.145 

.051 

.065 

.006 

.002 

— 

.003 

4 

50. 11 

17. 13 

3.  73 

3.  28 

2.  47 

5.09 

3.  72 

7.  47 

4.  47 

0.  82 

0.  67 

trace 

0.63 

100.  09 

Al.  I 

.835 

.  168 

.023 

.046 

.  062 

.091 

.059 

.080 

.010 

.005 

— 

.004 

5 

47.8 

20.1 

6.  7 

0.8 

1.  1 

5.4 

5.  5 

7. 1 

2.4 

0.  7 

0.8 

0.8 

99.3 

B2.  Ill 

.797 

.197 

.042 

.011 

.028 

.096 

.089 

.075 

.009 

.011 

.005 

6 

51.02 

18.  63 

3. 14 

0.  84 

1.02 

7.  89 

4.13 

6. 08 

1.10 

4.  53 

trace 

0. 16 

0.  59 

99.  66 

2.  480 

Al.  I 

.850 

.183 

.020 

.011 

.026 

.141 

.066 

.065 

— 

.001 

.008 

7 

50.  24 

20.  09 

2.54 

5.  65 

3.  65 

7.83 

2.  97 

7.  45 

0.36 

trace 

100.  78 

A3.  Ill 

.837 

.197 

.016 

.079 

.091 

.140 

.048 

.079 

DOSA  LANE— BOR(  )LAN(  >SE. 


297 


ORDER  (5.  LENDOFELIC.  NORGARE— Continued. 

SUBRANG  4.  DOSODIC.  LAURDALOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  27.2 
ab  36.7 
an  5. 3 
ne  15. 6 

di 

ol 

mt 

2.7 

1.9 

9.0 

Stoksund,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  116,  1890. 

Syenite- 

pegmatite. 

or  26. 1 
ab  28. 3 
an  3. 3 
ne  9. 7 

di 

ol 

mt 

il 

ap 

16.8 

3.2 

6.0 

3.7 

2.7 

Had,  Langesund 

Fjprd,  Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  139,  1899. 

• 

Soda-minette. 

or  22.8 
ab  32.  0 
an  0. 8 
ne  12. 8 

ol 

il 

hra 

Pf 

ap 

5.  6 
10.6 

9.6 

1.6 
3.6 

Lysebofjord, 

Norway. 

P.  Schei  and  L. 
Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  19,  1899. 

Olivine- 

laurdalite. 

H,0  n.  d. 

TiOa  high? 

so3 

X 

0.16 

0.75 

or  27.8 
ab  21.0 
an  5. 0 
ne  25. 6 

di 

ol 

mt 

il 

9.0 

0.4 

5.3 

0.5 

Alno,  Sweden. 

P.  Jannasch. 

H.  Rosenbusch, 

Element  e, 
p.  215,  1898. 

Tinguaite. 

so3 

Cl 

none 

none 

or  30.6 
ab  25. 2 
ne  17.6 

ac 

di 

wo 

mt 

4.6 

8.4 

4.4 
5.3 

Near  Topkowitz, 
Bohemia. 

F.  Hanusch. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XIX, 
p.  33,  1900. 

Tinguaite- 

porphyry. 

Not  fresh. 

or  27. 8 
ab  32.5 
an  6. 3 
ne  16.5 

di 

wo 

mt 

il 

4.5 

6.1 

3.9 

0.9 

Madstein,  n.  Nesch- 
witz,  Bohemia. 

F.  Hanusch. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XIV, 
p.  98,  1894. 

Sanidine- 

phonolite. 

or  26.7 
ab  41.9 
ne  15.9 

ae 

wo 

mt 

hm 

6.9 

2.7 

1.2 

2.6 

Edda  Gijorgis, 
Abyssinia. 

G.  T.  Prior. 

G.  T.  Prior, 

Min.  Mag.,  XII, 
p.  269,  1900. 

Tinguaite. 

Sum  low. 

Cl 

0. 23 

or  36.1 
ab  23. 1 
an  1. 7 
ne  23.9 

di 

wo 

mt 

4.4 

2.7 

5.3 

Near  Renseburg, 
Zwartkopjes, 
Transvaal. 

E.  A.  Wiilfing. 

E.  A.  Wiilfing, 

N.  J.,  1888,  II, 
p.  32. 

Nephelite- 

syenite. 

Near  miaskose 

or  33.4 
ab  36.2 
ne  11.9 

ac 

di 

ol 

mt 

4.6 

11.5 

1.2 

0.7 

Tongging,  Toba  Lake, 
Sumatra. 

W.  Herz. 

L.  Milch, 

Z.  D.  G.  G.,  LI, 
p.  70,  1899. 

Trachyte- 

andesite. 

Alkalies  high? 

SUBRANG  3.  SODIPOTASSIC.  BOROLANOSE. 


so3 

Cl 

FeS2 

0.04 

0. 06 

4.01 

or  39.5 
ab  7.3 
an  15. 6 
ne  16.2 

di 

ol 

il 

pr 

11.0 

4.7 

1.5 

4.0 

Near  Dr.  Thornton’s, 
Magnet  Cove, 
Arkansas. 

W.  A.  Noyes. 

J.  F.  Williams, 

A.  R.Ark.G.  S.,1890, 
II,  p.  263,  1891. 

Nephelite- 

felsite. 

or  29.5 
ab  10.5 
an  11.7 
ne  18.7 

di 

wo 

mt 

il 

ap 

18.4 

0.8 

4.9 

2.6 

1.0 

Schoolhouse, 

Magnet  Cove, 
Arkansas. 

H.  S.  Wash¬ 
ington. 

H.  S.  Washington, 

B.  G.  S.  A.,  XI, 
p.  399,  1900. 

Shonkinite 

(covite). 

Complete  in 

J.  G.  IX, 
p.  612,  1901. 

S03 

Cl 

SrO 

0. 02 

0.24 

0.28 

or  36. 1 
ab  6. 3 
an  8. 6 
ne  11.1 

di 

ol 

mt 

il 

25.8 

5.9 

3.9 
0.9 

Middle  Peak, 

High  wood  Moun¬ 
tains,  Montana. 

E.  B.  Hurlbut. 

L.  V.  Pirsson, 

B.  U.  S.  G.  S.,  148, 
p. 154, 1897. 

Monzonite. 

Near  monchi- 
quose. 

so3 

Cl 

SrO 

0.08 

0. 07 

0.35 

or  44.5 
ab  9.4 
an  8. 1 
ne  11.6 

di 

ol 

mt 

il 

ap 

10.6 

2.9 

5.3 

1.5 

1.6 

Palisade  Butte, 
Highwood  Moun¬ 
tains,  Montana. 

II .  W.  Foote. 

L.  V.  Pirsson, 

B.  U.  S.  G.  S.,148, 
p. 153, 1897. 

Syenite. 

• 

so3 

0.4 

or  41.7 
ab  1.6 
an  9. 2 
ne  24.4 

di 

wo 

mt 

il 

hm 

6.0 

4.1 
0.7 
1.4 

6.2 

Lake  Borolan, 
Sutherland,  Scot¬ 
land. 

J.  II.  Player. 

Horne  and  Teall, 

Tr.  R.  Soc.,  Edin., 
XXXVi,  Pt,  I, 
p. 178, 1893. 

Borolanite. 

One  decimal. 
Sum  low. 

so3 

Cl 

F 

Cr203 

Cu 

0.29 

0. 09 

trace 

trace 

0. 15 

or  36.1 
ab  14. 1 
an  14. 5 
ne  11.1 

di 

wo 

mt 

hm 

5.6 

7.4 

2.6 

1.4 

Gennersbohl,  Hegau. 

G.  F.'Fohr. 

G.  F.  Fohr, 

In.  Diss.  Wurzburg, 
p.  24, 1883. 

Phonolite. 

' 

or  28.4 
an  19. 5 
le  12.2 
ne  13.6 

di 

ol 

mt 

16.1 
6.  a 
3.7 

Monte  Cavallo, 
n.  Orvieto,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  V,  p.  370, 

1897. 

Leucite- 

tephrite. 

Near  subrang  2 
of  essexase. 

298 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE — Continued. 

RANG  2.  DOMALKALIC.  ESSEXASE. 


No. 

Si02 

ai2o3 

FeA 

EeO 

MgO 

CaO 

Na20 

K.,0 

H20+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

48.  98 

17.  76 

2. 14 

6.52 

2.  09 

8.  36 

6.  77 

2.  08 

4.  50 

0.  82 

0.56 

100.  58 

A3.  Ill 

.816 

.174 

.013 

.090 

.052 

.149 

.109 

.022 

.007 

2 

47.94 

17.  44 

6.  84 

6.51 

2.  07 

7.  47 

5.  63 

2.  79 

2.  04 

0.  20 

1.04 

99.  92 

A2.  II 

.799 

.171 

.043 

.090 

.052 

.133 

.091 

.030 

.003 

.007 

3 

46.  99 

17.  94 

2.  56 

7.56 

3.22 

7.85 

6.  35 

2.  62 

0.  65 

2.  92 

0.94 

trace 

none 

99.60 

2.  919 

A2.  II 

.783 

.176 

.016 

.105 

.080 

.140 

.102 

.029 

• 

.036 

.006 

— 

— 

12° 

4 

48.  23 

17.43 

2.  77 

5.  92 

2.  99 

6.  38 

6.  87 

2.  78 

2.  84 

0.  54 

2.  00 

0.69 

0. 18 

0.  08 

99.97 

2.  742 

Al.  I 

.804 

.171 

.017 

.082 

.075 

.114 

.111 

.030 

.  025 

.005 

.003 

.001 

23° 

5 

51.03 

18.  48 

11.95 

3.21 

6.  34 

6.  96 

5.  42 

4.83 

1.68 

100. 94 

2.86 

A3.  Ill 

.  851 

.181 

.075 

.044 

.159 

.124 

.087 

.051 

09 

100. 85 

6 

47.  67 

18.  22 

3.65 

3.85 

6.  35 

8.03 

. 

4.93 

3.  82 

2.97 

0.38 

0.  28 

100. 15 

A3.  Ill 

.795 

.179 

.023 

.053 

.159 

.143 

.080 

.041 

.004 

7 

52.  83 

17.  67 

7. 50 

1.68 

2.  47 

7.  35 

6.  61 

2.  52 

2.32 

100.  95 

B3.  IV 

.881 

.173 

.047 

,023 

.062 

1.31 

.107 

.027 

8 

46.  39 

19.  03 

9.  79 

0.  96 

5.33 

7.  02 

5.  47 

2.  47 

2.04 

0.  26 

0.  72 

0.  88 

101. 21 

2.  779 

B2.  Ill 

.773 

.187 

.061 

.013 

.133 

.125 

.088 

.026 

.009 

.006 

9 

55. 11 

20.  OS' 

2.30 

3.87 

1.67 

( 

5.06 

7.  88 

3. 16 

0.  59 

..  \ 

99.  72 

A3.  Ill 

.919 

.197 

.014 

.054 

.042 

.090 

.127 

.034 

10 

55.  07 

19.57 

3.  38 

3.  42 

1.68 

5.  56 

7. 10 

3.  34 

0.  38 

99.  50 

A3.  Ill 

.918 

.192 

.021 

.048 

.042 

.100 

.114 

.035 

11 

51.90 

22.  54 

4.  03 

3.15 

1.97 

3. 11 

8. 18 

4.  72 

0.  22 

99.82 

A3.  Ill 

.865 

.221 

.025 

.044 

.049 

.  056 

.114 

.050 

12 

48.  46 

16.81 

1.46 

9.  14 

4.  44 

6. 14 

6.31 

2. 33 

0.  59 

1.28 

3.  05 

0.  67 

trace 

100.  68 

A2.  II 

.808 

.165 

.009 

.127 

l.ll 

.110 

.102 

.025 

.038 

.005 

— 

13 

51.91 

19.  58 

6.  39 

2.  30 

0.  54 

5.50 

7.  70 

3,32 

0.  50 

trace 

1.56 

0.  72 

trace 

trace 

100.  02 

2.  715 

A2.  II 

.865 

.192 

.  .040 

.032 

.014 

.098 

.124 

.034 

.020 

.005 

— 

— 

14 

50.  50 

17.  71 

5.41 

4.  02 

3.  33 

7.91 

5.  52 

3.  02 

0.  45 

1.91 

0.  92 

100.  70 

2.  855 

A2.  II 

.842 

.174 

.034 

.056 

.083 

.141 

.089 

,  .032 

.023 

.006 

15 

49.  90 

19.  89 

2. 55 

4.  78 

5.  05 

7.21 

5.60 

3.  74 

0.19 

0. 13 

0.  93 

trace 

trace 

99.97 

A2.  11 

.832 

.195 

.016 

.066 

.126 

.129 

.090 

.040 

.011 

— 

— 

16 

48.  35 

19.  94 

2.  48 

5.  25 

5. 15 

7.  98 

5.  47 

3.  99 

0.  22 

0. 16 

0.12 

0.  84 

trace 

99.95 

A2.  II 

.806 

.195 

.016 

•°7S 

.129 

.142 

l 

.088 

.042 

4 

.002 

.006 

DOS  A  LANE - ESSEXOSE. 


299 


ORDER  6.  LENDOFELIC.  NORGARE— Continued. 

SUBRANG  4.  DOSODIC.  ESSEXOSE. 


Inclusive. 


Norm. 


Locality. 


or 

12.2 

di 

24.8 

ab 

21.0 

ol 

1.4 

an 

12.0 

mt 

3.0 

ne 

19.6 

il 

1.1 

or 

16.7 

di 

14.3 

ab 

25.7 

ol 

3.1 

an 

13.9 

mt 

9.9 

ne 

11.9 

ap 

2.3 

or 

16.1 

di 

17.7 

ab 

17.3 

ol 

4. 5 

an 

12.5 

mt 

3.7 

ne 

19.6 

il 

5.5 

ap 

1.9 

Zr02 

0. 04 

or 

16.7 

di 

15.9 

Cl 

0.03 

ab 

23.6 

ol 

3.7 

S 

0.08 

an 

8.3 

mt 

3.9 

Cr203 

none 

ne 

18.7 

il 

3.7 

v2o3 

0.04 

ap 

1.7 

NiO 

trace 

SrO 

0.08 

so3 

0.6/ 

or 

28.4 

>di 

14.7 

Cl 

0. 37 

ab 

13.6 

ol 

6.4 

an 

15.6 

mt 

10.2 

ne 

6.0 

hm 

5.0 

so 

5.0 

no 

4.6 

or 

22.8 

di 

19.2 

ab 

6.8 

ol 

7.3 

an 

16.1 

mt 

5.3 

ne 

19.0 

or 

15.0 

di 

13.4 

ab 

35.6 

wo 

3.5 

an 

10.8 

mt 

5.3 

ne 

11.1 

hm 

3.8 

so3 

0. 47 

or 

14.5 

di 

9.1 

Cl 

0.38 

ab 

24.1 

ol 

6.4 

an 

17.5 

mt 

0.9 

ne 

11.9 

il 

1.4 

hm 

9.1 

ap 

2.0 

or 

18.9 

di 

12.6 

ab 

35.1 

ol 

2.4 

an 

10.0 

mt 

3.2 

ne 

17.0 

- 

or 

19.5 

di 

13.1 

ab 

36.2 

ol 

0.8 

an 

12.0 

mt 

4.9 

ne 

12.8 

or 

27.8 

ol 

5.4 

ab 

25.2 

mt 

5.8 

an 

15.6 

ne 

18.7 

or 

13.9 

di 

13.1 

ab 

26.2 

ol 

10.2 

an 

10.6 

mt 

2.1 

ne 

11.8 

il 

5.8 

ap 

1.6 

Cl 

trace 

or 

18.9 

di 

3.1 

S 

trace 

ab 

37.2 

wo 

3.9 

Cr*>03 

trace 

an 

9. 5 

mt 

2.8 

SrO 

trace 

ne 

15.1 

il 

3.  1 

Li20 

trace 

hm 

4.5 

ap 

1.7 

or 

17.8 

di 

15.8 

ab 

21.0 

ol 

2. 5 

an 

14.7 

mt 

7.9 

ne 

13.9 

il 

3.5 

ap 

2.0 

or 

22.4 

di 

14.8 

ab 

13.6 

ol 

7, 6 

an 

18.1 

mt 

3.7 

ne 

18.2 

il 

1.7 

or 

23.4 

di 

13.4 

ab 

8.9 

ol 

10.1 

an 

18.1 

mt 

3.8 

ne 

20.1 

ap 

1.8 

St.  John,  New  Bruns¬ 
wick. 


Salem  Neck, 
Essex  County, 
Massachusetts. 

Salem  Neck, 
Essex  County, 
Massachusetts. 


Near  Big  Mountain, 
Uvalde  County, 
Texas. 


Three  Peaks, 

Crazy  Mountains, 
Montana. 


Liftuaugu  v  » 

Crazy  Mountains, 
Montana. 


Analyst. 


Reference. 


Author’s  name.  Remarks. 


W.  D.  Matthew. 


M.  Dittrich. 


H.  S.  Washing¬ 
ton. 


W.  F.  Hille- 
brand. 


A.  M.  Comey. 


G.  Schneider. 


Sunium  Point,  Car-  J.  Posada, 
melo  Bay,  Cali¬ 
fornia. 

Ferrera,  Columbretes  R.  Pfohl. 
Islands,  Spain. 


Stoksund,  Norway. 


G.  Forsberg. 


Stoksund,  Norway.  G.  Forsberg. 


Norway 


Brathagen,  Laugen- 
dal,  Norw’ay. 


Kauling,  Rhonge- 
birge. 


Rongstock,  Bohemia. 


G.  Forsberg. 


O.  N.  Heiden- 
reich. 


M.  Scheldt. 


Ilermos  River,  Kula, 
Asia  Minor. 


Well  Digging,  Kula, 
Asia  Minor. 


R.  Pfohl. 


H.  S.  Washing¬ 
ton. 


II.  S.  Washing¬ 
ton. 


W.  D.  Matthewr, 

Tr.  N.  Y.  Acad., 
XIV,  p.  213,  1895. 


Diorite-por- 

phyrite. 


II.  Rosenbusch,  |  Essexite. 

Elemente,  p.  172, 1898. 


H.  S.  Washington, 
J.G.,  VII,  p.  57, 
1899. 


W.  Cross, 

B.  U.  S.  G.  S;,  168, 
p.  61,  1900. 


Essexite. 


Basanite. 


Not  fresh. 


TiO.,  low? 


Dried  at  110°. 


J.  E.  Wolff,  Theralite. 

North.  Transc.  Surv.,  ,  (Rosenbusch.) 
p.  11,  1885. 


J.  E.  Wolff, 

B.  U.  S.  G.  S.,  150, 
p.  201,  1898. 

A.  C.  Law'son, 

B.  Dep.  G.  Un.  Cal., 
I,  p.  38,  1893. 

F.  Becke, 

T.  M.  P.  M.,  XVI, 
p.  173,  1896. 


IV.  C.  Brogger, 

Z.  Iv.,  XVI,  p.  116, 
1890. 

W.  C.  Brogger, 

Z.  K.,  XVI,  p.  116, 
1890. 

IV.  C.  Brogger, 

Z.  K.,  XVI,  p.  33, 
1890. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill,  p.  106, 
1899. 


H.  Lenk, 

Vh.  Ph.  Med.  Ges. 
Wurzb.,XXI,  p.  36, 
1887. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XIV, 
p.  99,  1894. 


H.  S.  Washington, 

J.  G.,  VIII,  p.  613, 
1900. 

H.  S.  Washington, 

J.  G.,  viii,  p.  613, 
1900. 


Theralite. 


Carmeloite. 


Inclosure  in 
trachyte. 


Pressed  rhom- 
benporphyry. 


Pressed  rhom- 
benporphyry. 


Laurdalite 
(nepheline- 
rich ) . 

Heumite. 


Phonolite. 


Dolerite 
(essexite) . 


Leucite-kulaite. 


Kulaite. 


A1203  corrected, 
given  as  8.48. 


Sum  high. 


Sum  high.  Iron 
oxides?  S03 
and  Cl  from 
sea  w’ater? 


Outer  part  of 
lense. 


Inner  part  of 
lense. 


Cf.  Eg.  Kg. ,  III, 
p.  19,  1899. 


Center  of  dike, 
cf.  No.  10, 
umptekose. 


A1203  as  in  T.  M. 
P.  M.,  XV,  p. 
487,  1895.  Cf. 
No.  40,  sho- 
shonose. 

Hornblende- 

basalt. 


Hornblende- 

basalt. 


800 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE — Continued. 


RANG  3.  ALKA LICALCIC.  SALEM ASE. 


No. 

SiC2 

ai203 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

K20 

h2o+ 

hr! 

MH 

tc 

o 

1 

co2 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

B3.  IV 

49.  23 

.  821 

17.69 

.173 

6.  87 

:  043 

2.03 

.028 

4.20 

.105 

12.  73 

.226 

2.  05 

.033 

5. 18 

• 

.056 

6.  80 

• 

0.30 

101.08 

2.  885 

20° 

RANG  3.  ALKALICALCIC.  SALEMASE. 


1 

44.  22 

19.  54 

2.  27 

4.  33 

6.  96 

9.  02 

2.46 

3.84 

5.  60 

trace 

trace 

0. 12 

99. 

72 

A3.  Ill 

.  737 

.191 

.013 

.060 

.174 

.160 

.040 

.041 

— 

— 

.002 

2 

45.  53 

18.37 

4.  85 

3.  43 

4. 11 

8. 15 

3.93 

4. 16 

2.62 

1.68 

1.54 

1.50 

0.  86 

0.  72 

101. 

45 

2.  657 

C2.  IV 

.  759 

.180 

.030 

.048 

.103 

.145 

.063 

.044 

.018 

.006 

.010 

RANG  3.  ALKALICALCIC.  SALEMASE. 


1 

45.  20 

17. 12 

5.  98 

6.  55 

5. 29 

7.  89 

4.  23 

2.31 

5.  35 

0.  68 

100. 60 

A3.  Ill 

.753 

.168 

.037 

.091 

.132 

.141 

.068 

.024 

.008 

2 

45.  32 

18.  99 

3.  78 

9.  78 

4.  68 

9. 19 

3.  78 

2. 12 

0.  31 

0.09 

1.94 

99.  98 

2.975 

A3.  Ill 

.  766 

.186 

.023 

.136 

.117 

.164 

.061 

.023 

.024 

11° 

3 

41.28 

18.  48 

9.  44 

8.  20 

7. 49 

7.04 

3.  52 

2.  21 

2.  74 

100.  40 

A3.  Ill 

.688 

.181 

.059 

.114 

.187 

.126 

.056 

.023 

4 

50.  47 

18.  73 

4.  19 

4.  92 

3.  48 

8.82 

4.  62 

3.56 

0.  58 

trace 

0.51 

0. 10 

0. 11 

100. 09 

A2.  II 

.841 

.185 

.026 

.068 

.087 

.157 

.074 

.038 

.006 

.001 

.002 

5 

44.  85 

20.  63 

6.91 

5. 10 

6.  27 

8.69 

3.28 

2.  65 

1. 15 

0.  69 

0.41 

100.  63 

A3.  Ill 

.748 

.202 

.043 

.071 

.157 

.155 

.053 

.029 

.006 

6 

46.  40 

21.90 

3.  87 

5.  80 

3.97 

7.96 

4.81 

3.  84 

1.08 

• 

99.63 

A3.  Ill 

.773 

.215 

.024 

.081 

.099 

.142 

.078 

.041 

7 

44.  50 

20.31 

2.  27 

8.84 

3.  90 

11.44 

3.  70 

1.64 

1.40 

trace 

0.31 

1.22 

0.  50 

100. 03 

A2.  II 

.742 

.199 

.014 

.123 

.098 

.204 

.059 

.017 

.004 

.008 

.007 

8 

44.  25 

19.  26 

5.83 

6.  63 

6.  98 

9. 15 

4.  43 

1.00 

3.  30 

trace 

100.  83 

A3.  Ill 

.738 

.188 

.036 

.092 

.175 

.162 

.071 

.011 

— 

9 

43. 19 

19.  43 

9.  67 

2.  45 

3.  43 

11.48 

3.93 

1.25 

3.  49 

0.  67 

0. 14 

0.  43 

99.56 

2.858 

A2.  II 

.720 

.190 

.060 

.034 

.086 

.205 

.003 

.013 

.002 

.003 

15° 

10 

50. 16 

17.97 

2.  23 

6.  25 

4.  70 

11.85 

3.50 

2.  80 

none 

trace 

trace 

0.30 

100.  66 

3.  03 

A3.  Ill 

.836 

.  176 

.014 

.087 

.118 

.211 

.056 

.030 

— 

— 

.004 

11 

48.  60 

17.  87 

6.  20 

5.  76 

4.32 

9. 11 

4.  66 

2.  06 

1.78 

100.  36 

2.  77 

A3.  Ill 

.  .810 

.  175 

.039 

.080 

.  108 

.161 

.075 

.  022 

DOSALANE - SALEMOSE. 


301 


ORDER  6.  LENDOFELIC.  NORGARE— Continued. 

SUBHANG  2.  DOPOTASSIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  31.1  di  22.7 
an  23. 4  wo  4. 3 
ne  9.4  mt  6.5 
hra  2. 4 

Morolo,  Ernici,  Italy. 

C.  Viola. 

C.  Viola, 

N.  J.,  1899,  I,  p.  97. 

Leucite-basalt. 

Sum  high. 

SUBRANG  3.  SODIPOTASSIC. 

S03  1.36 

or  22. 8  di  7.4 
an  35. 3  hv  5.  6 
no  9.4  ol  10.2 
mt  3.0 

Hiisengebirge,  n.  Ur- 
berach,  Hesse. 

Ivutscher  and 
Rudolph. 

C.  Chelius, 
cf.  N.  J.,  1892,  II, 
p.  252. 

Basaltic  rock. 

or  24.5  di  11.8 
ab  12. 1  ol  .3.5 
an  20. 3  mt  7. 0 
ne  11.4  il  2.8 
ap  1.9 

Madstein,  n.  Nesch- 
witz,  Bohemia. 

F.  Hanusch. 

J.  E.  Hibsch, 

T.M.  P.  M.,  XIV, 
p.  103,  1894. 

Camptonite. 

Sum  high. 

Not  fresh. 

SUBRANG  4.  DOSODIC. 

SALEMOSE. 

Cl 


trace 


S03 

Cl 


trace 

trace 


or 

13.3 

di 

14.6 

ab 

17.8 

Ol 

8.9 

an 

21.2 

mt 

8.6 

ne 

9.7 

il 

1.2 

or 

12.8 

di 

14.2 

ab 

14.1 

ol 

11.9 

an 

28.4 

mt 

5.3 

ne 

9.7 

il 

3.7 

or 

12.8 

di 

5.5 

ab 

10.0 

ol 

16.8 

an 

28.4 

mt 

13.7 

ne 

10.5 

or 

21.1 

di 

18.9 

ab 

17.3 

ol 

3.2 

an 

20.3 

mt 

6.0 

ne 

11.6 

il 

0.9 

or 

16.1 

di 

7.8 

ab 

11.0 

ol 

11.3 

an 

33.4 

mt 

10.0 

ne 

9.1 

or 

22.8 

di 

10.5 

ab 

4.2 

ol 

8.6 

an 

26.7 

mt 

5.6 

ne 

19.9 

or 

9.5. 

di 

12.8 

ab 

12.1 

ol 

13.3 

an 

34.2 

mt 

3.2 

ne 

10.2 

ap 

2.7 

or 

6.1 

di 

12.9 

ab 

15.7 

ol 

13.2 

an 

29.5 

mt 

8.4 

ne 

11.6 

or 

7.2 

di 

17.5 

ab 

16.2 

ol 

0.4 

an 

31.7 

mt 

7.9 

ne 

9.1 

hm 

4.2 

ap 

1.0 

or 

16.7 

di 

27.5 

ab 

11.5 

ol 

5.8 

an 

25.0 

mt 

3.2 

ne 

9.7 

or 

12.2 

di 

18.8 

ab 

22.5 

ol 

5.2 

an 

21.7 

mt 

9.0 

ne 

9.1 

land,  Maine. 


Essex  County, 
Massachusetts. 

Russell  Mine,  South 
Mountain,  Pennsyl¬ 
vania. 

Mount  Fairview,  Ros- 
ita  Hills,  Colorado. 


Mount  Franklin,  Vic¬ 
toria,  British  Co¬ 
lumbia. 

Ullernas,  Norway. 


Steinburg,  Wester- 
wald,  Rh.  Prussia. 


Krotenkopf,  Hesse. 


Spreudlingen, 

n.  Frankfort  a.  M. 
Hesse. 


Crater  Walls, 
Kilauea,  Hawaii. 


Dyer’s  Pass,  Canter¬ 
bury,  New  Zealand. 


E.  C.  E.  Lord. 


H.  S.  Washing¬ 
ton. 


C.  H.  Hender¬ 
son. 

L.  G.  Eakins. 

F.  G.  Wait. 


G.  Forsberg. 


Jungeblodt. 


Ivrauss. 


Not  stated. 


C.  Silvestri. 


R.  Speight. 


E.  C.  E.  Lord, 

A.  G.,  XXII, 
p.  344,  1898. 

H.  S.  Washington, 

J.  G.,  VII, 
p.  63,  1899. 

C.  H.  Henderson, 

Tr.  Am.  Inst.  M.  E., 
XII,  p.  82,  1884. 

W.  Cross, 

pr.  Colo.  Sc.  Soc.,  II, 
p.  247,  1887. 

G.  C.  Hoffman, 

A.  R.  G.  S.  Can., VI., 
p.  31  R.,  1895. 

W.  C.  Brogger, 

Z.  K.,  XVI, 
p.  49,  1890. 

j  A.  Dannenberg, 

T.  M.  P.  M.,  XVII, 
p.  480,  1898. 

j  K.  Oebbeke, 

Jb.  Pr.  G.  L-A.,  IX, 
p.  406,  1889. 

C.  Chelius, 

N.  J.  1894,  II, 
p.  419. 

C.  Silvestri, 

B.  C.  G.  It., 

XIX,  p.  191,  1888. 

R.  Speight, 

Tr.  N.  Z.  Inst., 

XXVI,  p.  409,  1894. 


Camptonite. 


Hornblende- 

gabbro. 

Basalt. 


Augite-diorite. 


Lava. 


Near  limburgose. 


Also  in  17  A.  R. 
U.  S.  G.  S.,  II, 
p.  324,  1896. 


Syenite-diorite.  ;  Border  of  mass. 

Cf.  No.  16,  pu- 
laskose. 

Augite-andesite. 


Nepbel ite-ba-  ]  Near  subrang  5. 
sanite. 


Hornbl  ende- 
basalt. 


Augite-ande¬ 

site. 


Dolerite. 


302 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE— Continued. 

RANG  3.  ALKALI  CALCIC.  SALEMASE. 


No. 

Si02 

A1A 

Fe,03 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

p205 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

49.61 

19. 18 

2. 12 

5.01 

4.  94 

10.  05 

5.  62 

1.04 

3.  55 

0.  27 

101.  39 

2.  782 

C3.  V 

.827 

.188 

.013 

.070 

.124 

.180 

.091 

.011 

.002 

2 

47.  30 

18.  27 

2.24 

6.95 

6.  78 

7.95 

5.99 

1.00 

0.  07 

1.47 

1.61 

99.  63 

2.  856 

A2.  II 

.788 

.179 

.014 

.097 

.170 

.142 

.097 

.011 

.018 

.011 

RANG  4.  DOCALCIC. 


1 

45.  76 

20.  48 

1.99 

4.18 

8.50 

11.57 

3.56 

0.  80 

2.80 

99.  64 

A3.  Ill 

.763 

.200 

.013 

.058 

.213 

.207 

.057 

.008 

2 

45. 11 

19.  67 

4.32 

8.57 

5.  65 

10.  45 

3.  87 

0.64 

0. 83 

0. 17 

0.21 

0.  25 

100.  07 

A2.  II 

.  752 

.192 

.027 

.120 

.141 

.186 

.063 

.006 

.003 

.002 

3 

42.  08 

20.  88 

6.  77 

3.17 

6.  85 

12.  48 

3.37 

0.  44 

3.18 

99.  22 

B3.  IV 

.701 

.204 

.042 

.044 

.171 

.223 

.055 

.005 

♦ 

CLASS  II.  DOSALANE. 

RANG  1.  PERALKALIC.  LUJAVRASE. 


1 

51.93 

20.  29 

3.  59 

1.20 

0.  22 

1.65 

8.  49 

9.81 

0.  99 

0. 10 

0.  25 

0.  20 

0.  06 

trace 

0.  09 

100.  58 
.27 

' 

Al.  I. 

.866 

.199 

.022 

.018 

.006 

.030 

.137 

.104 

.003 

— 

— 

.001 

100. 31 

2 

53. 10 

19.07 

5.  57 

none 

0. 17 

1.33 

9.41 

6.  84 

3.  98 

0. 10 

99.57 

A3.  III. 

.885 

.187 

.035 

— 

.004 

.024 

.152 

.073 

3 

52. 16 

20. 14 

6.  45 

n.d. 

1.54 

4.  64 

5.  73 

8.12 

1.39 

trace 

trace 

trace 

100. 17 

A4.  IV. 

.869 

.197 

.040 

(.080) 

.039 

.083 

.092 

086 

— 

— 

RANG  1.  PERALKALIC.  LUJAVRASE. 


1 

51.62 

15.  63 

6.  06 

4.  98 

trace 

3.  45 

10.09 

4. 19 

2. 12 

0.  33 

100.  61 

A2.  II. 

.860 

.153 

.038 

.069 

— 

.062 

.163 

.045 

.005 

2 

49.  46 

23.  53 

3.  04 

1.02 

0.03 

0.  80 

14.  71 

4.  34 

1.38 

101.27 

.51 

A‘2.  II. 

.824 

.231 

.019 

.014 

.001 

.014 

.237 

.046 

100. 76 

3 

48.  13 

18.  44 

3.41 

4.  30 

3.06 

5.  89 

8.  00 

3.  80 

. 

1.59 

0. 18 

1.74 

0.  49 

0. 19 

0. 10 

99.  93 
.09 

Al.  I. 

.802 

.180 

.021 

.060 

« 

.077 

.105 

.129 

.040 

.022 

.003 

.003 

.001 

99. 84 

4 

51.94 

16.  66 

3.  68 

2.  68 

3.  81 

4.  81 

7.53 

5.63 

0.  58 

• 

3.30 

0. 20 

100.  82 

2.  579 

B2  III. 

.866 

.163 

.023 

.037 

.095 

0.86 

.120 

.060 

.041 

.003 

5 

51.04 

20.  47 

1.89 

2. 19 

0.  97 

2.62 

11.62 

3.  52 

5.85 

0.62 

0.  29 

0.  27 

101.  35 

2.  460 

C2.  IV. 

.851 

.200 

.012 

.030 

.024 

.047 

.187 

.038 

.004 

.002 

6 

49.07 

19.  46 

2.  30 

3.  50 

0.  60 

3.  82 

9.  25 

4.  39 

5.  99 

trace 

0.  64 

trace 

0.  38 

99.  40 

B2.  III. 

.818 

.191 

.014 

.049 

.015 

.068 

.149 

.047 

1 

.008 

.005 

DOSALANE - LUJAVROSE. 


303 


ORDER  6.  LENDOFELIC.  NORGARE— Continued. 


SUBRANG  5.  PERSODIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SO  3  trace 

or  6. 1 
ab  23. 1 
an  23. 9 
lie  13. 3 

di  21.8 
ol  6. 6 
mt  3. 1 

Point  Sal,  California. 

H.  W.  Fair¬ 
banks. 

H.  W.  Fairbanks, 

B.  Dep.  G.,Un.  Cal.  II, 
p.  30,  1896. 

Augite-teschen- 

ite. 

Sum  high. 

or  6. 1 
ab  29.'3 
an  19. 7 
ne  11. 6 

di  7.0 
ol  16.1 
mt  3.2 
il  2.8 
ap  3. 9 

Pedregal,  Tlalpam, 
Mexico. 

P.  Krais. 

Felix  and  Lenk, 

Btr.  G.  Mex.  I, 
p.  103,  1890. 

Basalt. 

SUBRANG  3.  PRESODIC. 


or  4.4  di  16.0 
ab  12.6  ol  14.1 
an  37. 5  mt  3. 0 
ne  9. 4 

Rosswein,  Saxony. 

Sachsse  and 
Becker. 

Sachsse  and  Becker, 
cf.  N.  J.,  1893,  II, 
p.  503. 

Gabbro. 

• 

FeSo  0.33 

or  3. 3  di  14. 7 
ab  17.3  ol  14.0 
an  34. 2  mt  6.4 
ne  8. 5 

Lindenfels,  Hesse. 

R.  Marzahn. 

C.  Chelius, 

Erl.  G.  Kte.  Hesse, 

IV  Lief.,  p.  37,  1896. 

Diorite. 

or  2.8  di  17.2 
ab  8. 9  ol  6. 6 
an  40.  0  mt  9.  7 
ne  10.8 

Burberg,  n.  Carls- 
berg,  Bohemia. 

J.  M.  Clements. 

J.  M.  Clements, 

Jb.  G.  R-A.  Wien., 
XL,  p.  345,  1890. 

Basalt. 

Sum  low. 

ORDER  7.  LENFELIC.  ITALARE. 

y 

SUBRANG  3.  SODIPOTASS1C.  JANElltOSE. 


SOa  0. 67 

or  33.  9  ac  10.2 

Beaver  Creek, 

II.  N.  Stokes. 

Weed  and  Pirsson, 

Leucite- 

Cl  0. 70 

F  0.27 

1c  18. 7  di  5.  1 
so  9. 8  il  0. 5 

Bearpaw  Mountains, 

A.  J.  S.,  II,  p.  196, 

tinguaite. 

SrO  0. 07 

no  5.3  ft  0.7 

Montana. 

1896. 

LioO  trace 

or  40.  6  ac  16. 2 

Km  37,  Sta.  Cruz  R.  R. 

P.  Jannasch. 

H.  Rosenbusch, 

Tinguaite. 

ab  5.8  di  1.0 
ne  30. 1  wo  2. 3 

Rio  Janeiro, 

Elemente,  p.  215, 

Brazil. 

1898. 

S03  trace 

or  41.1  di  15.2 

Pogos  de  Caldas, 

F.  W.  Dafert. 

E.  Hussak, 

Leucitophyre. 

Cl  trace 

an  5. 3  ol  6. 1 
lc  5  2 

Sao  Paolo, 

N.  J.  1892,  11,  p.  149. 

1 

ne  26.5 

Brazil. 

* 

SUBRANG  4.  DOSODIC.  LUJAVROSE. 


Zr02 

2. 14 

or 

25.0 

ac 

17.6 

ab 

7.9 

ns 

2.0 

ne  26.4 

di 

15.4 

z 

3.1 

ol 

0.7 

ZrOo 

0.54 

or 

25. 6 

ac 

8.8 

Cl 

2.25 

ab 

8. 9 

di 

4.5 

ne  17.9 

SO 

31.4 

Z 

0.7 

ZrOo 

0.05 

or 

22.2 

di 

18.6 

Cl 

0.29 

ab 

14.1 

ol 

0.8 

F 

0.06 

an 

3.1 

mt 

4.9 

S 

0.09 

ne 

29.0 

il 

3.4 

Cro03 

none 

ap 

1.1 

Ni'O 

0.02 

SrO 

0. 10 

or 

33.4 

ac 

7.9 

ab 

7.3 

di 

18.5 

ne 

25.3 

ol 

0.7 

il 

6.0 

hm 

1.0 

or 

21.  1 

ac 

5. 5 

ab 

18.3 

ns 

1.4 

ne 

36.4 

di 

11.0 

ol 

0.5 

or 

26.1 

ac 

2.3 

ab 

13.6 

di 

13.2 

ne 

33.5 

wo 

1.6 

mt 

2.1 

il 

1.1 

Kangerdluarsuk, 

Greenland. 

N.  V.  Ussing. 

H.  Rosenbusch, 
Elemente,  p.'  126, 

1898. 

Lujaurite. 

Kangerdl  uarsuk , 
Greenland. 

N.  V.  Ussing. 

H.  Rosenbusch, 
Elemente,  p.  126, 

1898. 

Sodahte- 

syenite. 

Mount  Inge,  Uvalde 
County,  Texas. 

W.  F.  Hille-  . 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  61,  1900. 

Basanite. 

Picota,  Serra  de 
Monehique,  Portu¬ 
gal. 

Zilliacus. 

K.-Koschlau  and  Hack- 
man,  T.  M.  P.  M., 
XVI,  p.  272,  1896. 

Camptonitic 

tinguaite. 

Elfdalen,  Dalarne, 
Sweden. 

P.  Mann. 

P.  Mann, 

N.  J.  1884,  II,  p.  193. 

Phonolitg. 

( Cancri  nite-aegi 
rite-syenite. ) 
Not  fresh. 

Slid  Berge,  Ainu, 
Sweden. 

N.  Sahlbom. 

N.  Sahlbom, 

N.  J.  1897,  II,  p.  97. 

Nephelinite. 

Not  fresh. 

Sum  low. 

304 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 

RANG  1.  PERALKALIC.  LUJAYRASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na^O 

k2o 

h2o+ 

1 1,0 

co2 

Ti02 

FA 

- \ - 

MnO 

BaO 

Sum 

Sp.  gr. 

7 

54. 14 

20.61 

3.  28 

2.  08 

0.  83 

1.85 

9.  87 

5.  25 

0.  40 

0. 95 

0.  25 

100.  55 

A2.  II. 

.902 

.202 

.020 

.030 

.021 

.033 

.159 

.057 

.012 

.004 

8 

52.  25 

22.24 

2.  42 

1.98 

0.  96 

1.54 

9.  78 

6. 13 

0.  73 

0.  60 

0.  53- 

99.16 

B2.  III. 

.871 

.218 

.015 

.028 

.024 

.027 

.  158’ 

.  065 

.007 

.008 

RANG  2.  DOMALICALIC.  VULTURASE. 


1 

49.  73 

19.20 

5.  50 

2.  41 

(2. 63) 

7.  96 

1.99 

9.39 

1.19 

trace 

100.  00 

2.  655 

B3.  IV. 

.829 

.188 

.034 

.033 

.066 

.142 

.032 

.100 

— 

2 

47.  89 

18.  25 

4.  93 

3.  64 

3.  68 

8.  70 

2.  60 

8.23 

0.65 

0.  77 

99.  34 

2.  781 

B2.  III. 

.798 

.179 

.031 

.051 

.092 

.155 

.042 

.088 

.010 

3 

48.  99 

19.82 

5.  26 

2.59 

2.  82 

8. 13 

Q  1  *7 

O.  1  / 

9.06 

n.  d. 

0.  33 

100. 17 

A3.  III. 

.817 

.194 

.033 

.036 

.071 

.145 

.051 

.096 

.002 

RANG  2.  DOMALKALIC.  VULTURASE. 


1 

50. 55 

20.  48 

2.  66 

4.  02 

4.24 

7.30 

8. 37 

2.  27 

A3.  III. 

.843 

.201 

.017 

.  056 

.106 

.130 

.135 

.024 

2 

42.46 

18.  49 

3.  35 

6.31 

3.  64 

8.  70 

7. 12 

4.58 

A3.  III. 

*  .708 

.181 

.021 

.088 

.091 

.106 

.114 

.049 

0.  44 


2.31 


100. 33 


99.  92 


RANG  3.  ALKALICALCIC. 


i 

47.40 

19.  84 

2.  72 

4.  40 

4.  23 

9.  88 

2.  93 

5. 91 

1.  66 

0.30 

99.  27 

B2.  III. 

.790 

.194 

.017 

.061 

.106 

.177 

.047 

.063 

.004 

RANG  3.  ALKALICALCIC. 


1 

39.  08 

22. 13 

3.  40 

5.  72 

5.  44 

12.  56 

6.  85 

1.77 

1.28 

0.  85 

0.  50 

trace 

99.  58 

2.910 

A2.  II. 

.651 

.217 

.021 

.079 

.136 

.224 

.110 

.019 

.011 

.003 

— 

2 

39.  03 

21.57 

8.  98 

6.  82 

4.  52 

12.  58 

3.82 

2.  63 

0.  55 

100.  50 

3.145 

A3.  III. 

.651 

.211 

.  056 

.094 

.113 

.225 

.061 

.027 

CLASS  II.  DOSALANE. 


RANG  1.  PERALKALIC. 


1 

47.  43 

23.  60 

4.  59 

1.20 

0.  67 

4.  42 

15.  08 

2.  00 

n.  d. 

0. 10 

99.09 

A3.  Ill 

.791 

.231 

.029 

.017 

.017 

.078 

.243 

.021 

DOSALANE - CAMPANARE. 


305 


ORDER  7.  LENFELIC.  ITALARE — Continued. 


SUBRANG  4.  DOSODIC.  LOT  A  VROSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ZrO.,  0. 92 

Cl  "  0.12 

or  31.7 
ab  18.3 
ne  31.2 
Z  1.3 

ac  6. 5 
di  7.6 
mt  1. 4 
il  1.8 

Tschasnatsch  orr , 
Umptek,  Kola, 
Finland. 

F.  Eichleiter. 

F.  Eichleiter, 

Vh.  G.  R-A.  Wien, 
XXVII,  p.  218,  1893. 

Nephelite- 
syenite  ' 
(lujavrite). 

Also  in  V.  Hack- 
man,  Fennia, 
XI,  No.  2,  p. 
132,  1894. 

or  36.1 
ab  12.6 
ne  36.6 

ac  2. 3 
di  6.0 
ol  0.6 
mt  2.3 
il  1.1 

Rabot’s  Spitze, 
Umptek,  Kola, 
Finland. 

V.  Hackman. 

V.  Hackman, 

Fennia,  XI,  No.  2, 
p.  132,  1894. 

Lujavrite. 

Sum  low. 

SUBRANG 

2.  DOPOTASSIC.  BRAC'CIANOSE. 

or  28.4 
an  15. 6 
lc  21.4 
ne  9. 1 

di  14. 2 
wo  2. 3 
mt  7.9 

Bracciano,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  V,  p.  49,  1897. 

Leucite- 

tephrite. 

MgO  from  loss. 

or  14. 5 
an  13. 6 
lc  27.0 
ne  11.  9 

di  23.2 
mt  7. 2 
il  1.5 

Crocicchie,  Lake 
Bracciano,  Italy. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  V,  p.  49,  1897. 

Leucitite. 

Sum  low. 

or  15.6 
an  13. 1 
lc  29.6 
ne  14.5 

di  16. 1 
wo  3. 9 
mt  7. 7 

Lava  of  1893,  Mt. 
Vesuvius,  Italy. 

Mrha. 

F.  Becke, 

T.  M.  P.  M.,  XVIII, 
p.  94,  1898. 

Leucite- 

basanite. 

MgO  low? 

SUBRANG  4,  DOSODIC.  VULTUROSE. 


Cl 

trace 

or  13. 3  di  19. 6 
ab  17. 8  ol  5. 0 
an  11. 7  mt  3. 9 
ne  28. 7 

Cuyamas,  San  Luis 
Obispo  County, 
California. 

V.  Lenher. 

H.  W.  Fairbanks, 

B.  Dep.  G.  Un.  Cal., 
I.,  p.  293,  1895. 

Analcite- 

diabase. 

(teschenite). 

H20  low? 

so3 

2.44 

or  19.5  di  13.9 

Melfi,  Monte  Vulture, 

C.  F.  Rammels- 

C.  F.  Rammelsberg, 

Hauynophyr. 

Cited  for  com- 

Cl 

0. 52 

an  15. 3  ol  8.2 
lc  6.1  mt  4.9 
so  6. 9 
no  21. 3 

Italy. 

berg. 

Z.  D.  G.  G.,  XIII, 
p.  273,  1860. 

parison. 

In  Roth.,  1861, 
p.  37. 

SUBRANG  3.  SODIPOTASSIC. 


or  16. 7  di  21. 1 

Orchi,  RoccaMonfina, 

A.  Roh rig. 

H.  S.  Washington, 

Leucite- 

Sum  low. 

an  23. 4  ol  4.3 
lc  14.4  mt  3.9 

Italy. 

J.  G.,  V,  p.  247,  1897. 

tephrite. 

ne  13.3 

SUBRANG  4.  DOSODIC. 


Cl 

S 

Cr203 


trace 

an  24. 5 

ol 

14.3 

trace 

lc 

6.5 

am 

12.7 

trace 

kp 

1.3 

mt 

4.9 

ne  31.2 

il 

ap 

1.6 

1.1 

an  34.2 

di 

7. 7 

lc  11.8 

ol 

9.0 

ne  17. 3 

am 

mt 

6.9 

13.0 

Lenbach,  Rhbnge- 
birge. 


Kreuzberg,  Rhonge 
birge. 


H.  Lenk. 


E.  v.  Seyfried. 


H.  Lenk, 

Vh.  Ph.  Med.  Ges." 
Wurzb.,  XXI, 
p.  54,  1887. 

E.  v.  Seyfried,  cf.  N.  J., 
1898,  II,  p.  61. 


Nephelinite. 


Neph  elite- 
basalt. 


A1203  high? 


ORDER  8.  FELDOLENIC.  CAMPANARE. 


SUBRANG  5.  PERSODIC. 


or 

11.7 

ac 

13.4 

ab 

1.6 

ns 

0.5 

ne 

58.5 

di 

7.9 

WO 

5.1 

9 

Penikkavaara, 

Kuuosamo, 

Finland. 


M.  Dittrich. 


V.  Hackman, 

B.  G.  G.  Fink, 

No.  11,  p.  22,  1900. 


Soda-sussexite. 


Low  sum, 
to  H20? 


due 


14128— No.  14—03 


20 


306 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  II.  DOSALANE — Continued. 
RANG  2.  DOMALKALIC.  VESUVASE. 


No. 

Si02 

A1A 

Fe2Os 

FeO 

MgO 

CaO 

Na-jO 

K20 

H,0+ 

h3o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

47.71 

18.  44 

2.  46 

5.  68 

4.  80 

9.  42 

2.  75 

7.  64 

trace 

none 

0.  37 

trace 

99.  27 

B2.  Ill 

.795 

.181 

.015 

.079 

.120 

.168 

.044 

.081 

— 

.005 

— 

1 

2 

47.  65 

19.  28 

2.  63 

6.  48 

4. 19 

9.01 

2.  78 

7.47 

0.13 

0.11 

none 

trace 

0.  50 

trace 

100. 23 

A2.  II 

.794 

.189 

.016 

.090 

.085 

.160 

.045 

.080 

.003 

— 

RANG  2.  DOMALKALIC.  VESUVASE. 


1 

38.11 

20.  84 

5.  67 

1.46 

3.  80 

14.  44 

6.65 

2. 12 

4.51 

0.57 

0.  65 

0.  48 

0.  84 

0. 14 

none 

100. 60 

Al.  I 

.635 

.204 

.035 

.020 

.095 

.258 

.107 

.023 

.006 

.006 

.002 

CLASS  II.  DOSALANE. 

RANG  1.  PERALKALIC.  URTASE. 


1 

44.  40 

19.95 

5. 15 

2.77 

1.75 

8.49 

6.50 

8. 14 

1.17 

0.  24 

0. 12 

1.53 

0.  37 

0.  08 

0.  01 

100. 76 

2.  770 

Al.  I 

.740 

.196 

.032 

.039 

.044 

.152 

.105 

.087 

.019 

.003 

.001 

— 

26° 

2 

45.  64 

19.50 

3.47 

3.34 

3.  04 

4.  45 

11.57 

6.  96 

0. 16 

2.  44 

0. 19 

100. 76 

A2.  II 

.761 

.191 

.022 

.046 

.  076 

.079 

.187 

.074 

.031 

.003 

3 

46.  48 

19.00 

4.  74 

2.  30 

2.  49 

4.  35 

8.46 

6.  78 

3.  31 

0.  36 

1.  22 

0. 15 

trace 

99.91 

2.58 

Al.  I 

.741 

.186 

.030 

.032 

.062 

.078 

.136 

.072 

.015 

.001 

— 

RANG  1.  PERALKALIC.  URTASE. 


1 

45. 18 

23.  31 

6.11 

n.  d. 

1.45 

4.62 

11.  17 

5. 95 

1. 14 

98.92 

D4.  V 

.753 

.228 

(.038) 

(.044) 

.036 

.082 

.180 

.064 

2 

45.  46 

26.  73 

4.31 

0.  60 

trace 

2.09 

15.07 

4.23 

0.  44 

0. 12 

99.  05 

B3.  IV 

.  758 

.262 

.027 

.008 

— 

.037 

.243 

.045 

.002 

3 

45.  43 

28.  77 

3. 10 

0. 40 

0.  22 

1.86 

16. 16 

3.38 

n.  d. 

99.  32 

A3.  Ill 

.  757 

.282 

.019 

.006 

.006 

.033 

.261 

.036 

4 

45.  28 

27.  37 

3.  53 

0.  49 

0.33 

1.  22 

17.29 

3.  51 

0.40 

0. 19 

99.  53 

A3.  Ill 

.  755 

.268 

.022 

.007 

.008 

.022 

.279 

.037 

.003 

5 

43.  02 

24.  63 

3.  59 

2. 17 

1.96 

5.  47 

14.  81 

2.  99 

n.  d. 

0.63 

0.  70 

99.97 

A2.  II 

.717 

.241 

.022 

.030 

.049 

.098 

.  239 

.032 

.008 

.005 

DOSALANE - URTOSE. 


307 


ORDER  8.  FELDOLENIC.  CAMPANARE— Continued. 

SUBRANG  2.  DOPOTASSIC.  VESUVOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  3. 9  di  2o.  4 

Lava  of  1631,  LaScala, 

H.  S.  Washing- 

H.  S.  Washington. 

Leucite- 

Sum  low. 

an  Id.  t>  ol  o.  4 
lc  32.3  mt  3.5 

Mount  Vesuvius. 

ton. 

Not  published. 

basanite. 

ne  12. 5  il  0. 7 

or  13.3  di  19.9 

Lava  of  1872,  near 

H.  S.  Washing- 

H.  S.  Washington. 

Leucite- 

an  1  /  .  o  ol  o.  3 
lc  24.4  mt  3.7 

Observatory, 

ton. 

Not  published. 

basanite. 

ne  12.8  ap  1.1 

Mount  Vesuvius. 

. 

SUBRANG  4.  DOSODIC. 


ZrOo 

SO,' 

S 


0.18 

an  20. 6 

wo 

5.7 

none 

lc  10.0 

ol 

6.7 

0. 14 

ne  30. 4 

am  11.  3 

mt 

3.2 

il 

0.9 

hm 

3.3 

ap 

2.0 

Baptist  church, 
Magnet  Cove, 
Arkansas. 


H.  S.  Washing¬ 
ton. 


H.  S.  Washington, 

J.  G.,  IX,  p.  619, 1901. 


Biotite-ijolite. 


Not  fresh. 


ORDER  9.  PERLENIC.  LAPPARE. 


SUBRANG  3.  SODIPOTASSIC.  ARKANSOSE. 


ZrOo 

S03' 

S 


so. 

Cl 


0.03 

an 

i.i 

di 

9.6 

0.06 

lc 

37.9 

wo 

12.0 

none 

ne 

29.8 

mt 

4.9 

il 

2.8 

hm 

1.8 

lc 

29.6 

ac 

10.2 

ne 

33.2 

ns 

5.9 

kp 

1.9 

ol 

7.0 

am 

8.1 

il 

4.5 

0.19 

lc 

31.5 

ac 

10.2 

0.08 

ne 

32.4 

di 

15. 6 

am 

0.8 

mt 

1.9 

il 

2.3 

Diamond  Jo  Quarry 
Magnet  Cove, 
Arkansas. 


Wudjavrtschorr, 
Umptek,  Kola, 
Finland. 


Etinde  Volcano, 
Ivamerun,  Africa. 


H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  IX,  p.  616, 1901. 

Arkite  (leucite- 
syenite ) . 

V.  Hackman. 

V.  Hackman, 

Fennia,  XI, 

No.  2,  p.  151,  1894. 

Nephelite-  Alkalies  high? 

porphyry. 

M.  Dittrich. 

E.  Esch, 

Sb.  Berl.  Ak., 

1901,  p.  299. 

Leucitite. 

SUBRANG  4.  DOSODIC.  URTOSE. 


lc  27.9  ac  7.4 
ne  46. 6  di  1. 0 
ol  6.7 
am  7. 7 

Beemerville,  New 
Jersey. 

J.  F.  Kemp. 

J.  F.  Kemp, 

Tr.  N.  Y.  Ac.,  XI, 
p.  67,  1892. 

Nephelite- 

porphyry 

(sussexite). 

lc  19.6  ac  12.0 
ne  61. 6  di  2. 1 
wo  3.3 

Lujavr-Urt,  Kola, 
Finland. 

W.  Petersson. 

W.  Ramsay, 

G.  F.  F.,  XVIII, 
p.  462,  1896. 

Urtite. 

Sum  low. 
“Ti02ca.  2.00, 
with  Si02.” 

or  5. 6  ac  6. 9 
lc  11.3  di  1.8 
ne  69.9  wo  2.9 
mt  0. 9 

Lujavr-Urt,  Kola, 
Finland. 

A.  Zilliacus. 

W.  Ramsay, 

G.  F.  F.;  XV III, 
p.  462,  1896. 

Urtite. 

Low  sum,  due 
to  H20. 

lc  16.1  ac  10.2 
ne  65. 0  ns  3.4 
di  3.4 
wo  0. 8 

Lujavr-Urt,  Kola, 
Finland. 

N.  Sahlbom. 

W.  Ramsay, 

G.  F.  F.,  XVIII, 
p.  462,  1896. 

Urtite. 

“Ti02  ca  2.  00, 
with  Si02.” 

lc  9.6  ac  10.2 
kp  3.2  ns  1.0 
ne  59. 4  ol  5. 8 
am  8.  2 
mt  1. 1 
ap  1. 7 

Iivaara,  Kuuosamo, 
Finland. 

A.  Zilliacus. 

V.  Hackman, 

B.  G.  G.  Finl., 

No.  11,  p.  17,  1900. 

Ijolite 

(nephelite- 

rich). 

308 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  II.  DOSALANE. 
SECTION  1.  C  EXTREME  OVER  Z 

RANG  2.  DOMALKALIC. 


No. 

Si02 

Al2()3 

Fe203 

FeO 

MgO 

CaO 

Xa20 

K,0 

h2o+ 

h2o- 

C02 

Ti02 

pa 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

B3.  IV 

58.60 

.977 

22.  90 

.224 

2.  52 

.016 

6.  98 

.097 

3.97 

.099 

1.65 

.030 

3.25 

.052 

0. 51 

.005 

0.63 

101.01 

2.  85 

SECTION  1.  C  EXTREME  OVER  Z. 
RANG  2.  DOMALKALIC. 


1 

50. 10 

27.60 

3.65 

9.14 

3.86 

1.53 

3.  04 

0.  81 

1.00 

100.  73 

2.  92 

A3.  Ill 

.835 

.270 

.023 

.127 

.097 

.027 

.049 

.008 

RANG  3.  ALKALICALCIC. 


1 

52.  84 

23.  62 

0.65 

10.  00 

3. 16 

3.  92 

2.64 

0.  67 

1.87 

trace 

0.43 

none 

99.  80 

2.  83 

A2.  II 

.881 

.231 

.004 

.140 

.  056 

.070 

.042 

.007 

— 

.006 

— 

2 

58.00 

22.20 

1.97 

7.  24 

3.  84 

2. 17 

3.18 

0.  68 

0.40 

99.  68 

2.  85 

A3.  Ill 

.967 

.218 

.012 

.100 

.('96 

.039 

.051 

.007 

DOSALANE - SUBCLASS  II. 


309 


SUBCLASS  II.  Q+F  +  L  DOMINANT  OVER  C  +  Z. 
ORDER  3.  QUARFELIC. 

SUBRANG  3.  PRESODIC. 


Q  23.4 

hy 

21.3 

or  2.8 
ab  27. 2 

rat 

3.7 

• 

an  8. 3 
C  11.0 

« 

Le  Pallet,  Loire  In¬ 
fer.,  France. 


A.  Pisan i. 


A.  Lacroix, 

B.  S.  C.  G.  Fr., 
LXVII,  p.  23,  1899. 


Norite. 


Product  of  con¬ 
tact  rneta- 
morphism? 


ORDER  4.  QUARDOFELIC. 
SUBRANG  3.  PRESODIC. 


Q  13.7 

hy  23.5 

Le  Pallet,  Loire  In- 

A.  Pisan i. 

A.  Lacroix, 

Norite. 

Product  of  con- 

or  4. 4 
ab  25. 7 
an  7. 5 

C  19.0 

mt  5.3 

fer.,  France. 

B.  S.  C.  G.  Fr., 
LXVII,  p.  23,  1899. 

tact  meta- 
morphism? 

SUBRANG  3.  PRESODIC. 


SrO  none 

Q  15.3  hy  24.4 
or  3. 9  mt  0. 9 
ab  22.  0 
an  19. 5 

C  11.4 

Snowbank  Lake,  Min¬ 
nesota. 

\ 

A.N.Winchell. 

A.  N.  Winchell, 

A.  G.,  XXVI, 
p.  303,  1900. 

Cordierite- 

norite. 

Product  of  con¬ 
tact  meta¬ 
morphism? 

Q  21.4  hy  21.1 
or  3.9  mt  2.8 
ab  26. 7 
an  10.  8 

C  12.3 

Le  Pallet,  Loire  In¬ 
fer.,  France. 

A.  Pisani. 

A.  Lacroix, 

B.  S.  C.  G.  Fr., 
LXVII,  p.  23,  1899. 

Norite. 

Near  order  3. 
Product  of 
contact  meta¬ 
morphism? 

310 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE.  SUBCLASS  I.  Q+F+L  EXTREME  OVER  C+Z. 


RANG  1.  PERALKALIC.  ROCKALLASE. 


No. 

SiO, 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h20+ 

H.,0- 

O 

° 

Ti02 

p2o5 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

A3.  Ill 

68.  75 

1.146 

5.91 

.058 

5.81 

.036 

5. 33 

.074 

0.  08 

.002 

2.11 

.038 

7.52 

.121 

4.  28 

.046 

n.  d. 

100. 02 

2.  47 

RANG  1.  PERALKALIC.  ROCKALLASE. 


1 

73.  60 

4.  70 

13. 10 

n.  d. 

•o.  11 

0.  37 

6.  96 

trace 

n.  d. 

trace 

0.  93 

99.  83 

2.8 

A3.  Ill 

1.227 

.046 

.082 

.032 

.003 

.006 

.112 

— 

— 

.012 

CLASS  III.  SALFEMANE. 

RANG  3.  ALKALICALCIC.  VAALASE. 


1 

53.  35 

12.90 

2.64  , 

11.28 

2.  68 

6.  96 

2.83 

1.40 

1.  76 

0.  91 

2.  44 

0. 45 

0.  25 

0.  05 

100.  07 

Al.  I 

.889 

.126 

.016 

.157 

.  067 

.124 

.045 

.015 

.030 

.003 

.004 

— 

2 

50.  85 

12.  54 

10.  03 

7. 11 

5.  57 

9.33 

2.  37 

1. 13 

0.  34 

0.  76 

100. 08 

A3.  Ill 

.848 

.123 

.062 

.099 

.139 

.166 

.039 

.  012 

.005 

3 

55.  87 

13.  52 

2.  70 

5.89 

6.  51 

8.87 

2.  42 

1.  72 

1.  56 

0.  09 

0.  56 

0.  25 

0.  10 

0.  02 

100.  08 

Al.  I 

.931 

.132 

.017 

.082 

.163 

.159 

.039 

.018 

.007 

.002 

.001 

— 

' 

4 

50.57 

11.  70 

12.36 

5.89 

3.  98 

7.  89 

3.  70 

0.  82 

1.  44 

1.02 

99.37 

2.913 

B2.  Ill 

.843 

.115 

.077 

.082 

.100 

.141 

.060 

.009 

.013 

5 

49.  07 

10.  60 

12.  03 

6.57 

4.  68 

8.58 

2.56 

1.76 

1.70 

1.65 

99.  20 

3.  020 

B3.  IV 

.818 

.104 

.  075 

.092 

.117 

.153 

.041 

.019 

• 

6 

52.7 

11.4 

9.0 

3.7 

7.4 

11.6 

2.3 

0.7 

1.4 

100.2 

A3.  Ill 

.878 

.112 

.056 

.051 

.185 

.207 

.037 

.007 

7 

52.  67 

10.  62 

10.  43 

4.21 

7.04 

11.70 

2. 19 

Q.  65 

0.  38 

99.  89 

A3.  Ill 

.878 

.104 

.065 

.058 

.176 

.209 

.035 

.007 

8 

52.  22 

10.  66 

9.39 

5. 15 

6.  64 

11.27 

2.  34 

0.51 

100. 16 

A3.  Ill 

.870 

.104 

.059 

.072 

.166 

.201 

.038 

.005 

RANG  4.  DOCALCIC. 


1 

56. 18 

14.  76 

2. 12 

6.  98 

8.11 

7.97 

1.62 

0.80 

1.37 

0.  08 

0. 17 

100. 16 

A3.  Ill 

.936 

.145 

.013 

.097 

.203 

.143 

.026 

.008 

.001 

.002 

2 

52.11 

13.  70 

*  1.22 

9.  86 

8: 08 

12. 16 

1.31 

0.  16 

0. 53 

0.  06 

0.  32 

0.  05 

0.  20 

none 

99.  79 

Al.  I 

.869 

.134 

.008 

.138 

.202 

.217 

.021 

.002 

.004 

— 

.003 

— 

3 

51.68 

13.  52 

4.  87 

9.71 

5. 19 

8.  84 

2.  14 

0. 12 

0.  50 

0.04 

1.20 

0. 17 

0.  66 

none 

100. 08 

Al.  I 

.861 

.133 

.030 

.136 

.130 

.158 

.034 

.001 

.015 

.001 

’  .009 

— 

4 

51.82 

13. 55 

10.  07 

2.  85 

7.35 

10.  86 

2.52 

0.  23 

1.40 

100.  65 

A3  III 

.864 

.133 

.063 

.040 

.184 

.194 

.040 

.002 

SALFEMANE - VAALOSE. 


311 


ORDER  3.  QUARFELIC.  ATLANTARE. 


SUBRANG  2.  DOPOTASSIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Q  28.0  ac  16.6 
or  25.  6  ns  8.  5 
ab  6.3  di  9.4 
hy  5. 1 

Fossa  del  Gallo,  Cud- 
dia  Randazzo,  Pan- 
telleria. 

H.  Forstner. 

H.  Forstner, 

Z.  K.,  VIII, 
p.  179,  1884. 

Pantellerite. 

SUBRANG  5.  PERSODIC.  ROCKALLOSE. 

NiO  0. 06 

Q  38.0  ac  30.5 
ab  24. 1  di  1.4 
hy  5. 5 

Rockall  Island,  N.  At¬ 
lantic  Ocean. 

C.  J.  S.  Makin. 

J.  W.  Judd, 

Tr.  R.  Ir.  Ac., 

XXXI,  Pt.  Ill, 
p.  54,  1897. 

Rockallite. 

MnO  used  in 
calculating 
norm. 

ORDER  4.  QUARDOFELIC.  VAALARE. 

SUBRANG  4.  DOSODIC.  VAALOSE. 


FeS., 

Cr»03 

v»o3 

NiO 

SrO 

0.13 

none 

0. 04 

trace 

trace 

Q  10.2 
or  8. 3 
ab  23. 6 
an  18. 3 

di  11.7 
hy  15.3 
mt  3. 7 
il  4. 6 
ap  1.0 

Teanaway  River,  Kit¬ 
titas  County,  Wash¬ 
ington. 

W.  F.  Hille- 
brand. 

G.  O.  Smith, 

B.  U.  S.  G.  S.,  168, 
p.  225,  1900. 

Basalt. 

so3 

0.05 

Q  8.6 
or  6.7 
ab  20. 4 
an  20. 0 

di  17.8 
hy  10.3 
mt  14.4 
ap  1. 7 

Rockland  Ridge, 
Columbia  River, 
Washington. 

E.  A.  Schnei¬ 
der. 

• 

E.  A.  Schneider, 

A.  J.  S.,  XXXVI, 
p.  237,  1888. 

Augite- 

andesite. 

SrO 

Li20 

none 

trace 

Q  8.0 
or  10. 0 
ab  20. 4 
an  20.  9 

di  19.0 
hy  14.6 
mt  3. 9 
il  1.1 

Emigrant  Gap,  Placer 
County,  California. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

B.  U.  S.  G.  S.,  148, 
p.  212,  1897. 

Gabbro. 

Cf.  No.  63, 
andose. 

Q  8.5 
or  5. 0 
ab  31. 4 
an  12. 8 

di  20. 6 
hy  0. 5 
mt  16.2 
il  2.0 
hm  1. 1 

Rio  de  Janeiro,  Brazil. 

T.  L.  Bailey. 

E.  O.  Hovey, 

T.  M.  P.  M.,  XIII, 
p.  216,  1892. 

Diabase. 

Sum  low. 

Q  7.0 
or  10.6 
ab  21.5 
an  12. 2 

di  26.3 
hy  1.5 
mt  17.4 

Rio  de  Janeiro,  Brazil. 

F.  Quincke. 

E.  0.  Hovey, 

T.  M.  P.  M.,  XIII, 
p.  216,  1892. 

Diabase. 

Sum  low. 

Q  9.2 
or  3. 9 
ab  19. 4 
an  18. 9 

di  30.1 
hy  4. 6 
mt  11.8 
hm  0. 8 

Oudedrift,  Beaufort 
West,  Cape  Colon}'. 

Wappler. 

E.  Cohen, 

N.  J.  B.  B.,  V, 
p.  233,  1887. 

Olivine-diabase. 

Iron  oxides? 

Q  10.7 
or  3. 9 
ab  18. 3 
an  17. 2 

di  31.8 
hy  2. 9 
mt  13. 5 
hm  1.1 

Nel’s  Poort,  Beaufort 
West,  Cape  Colony. 

Holdermann. 

E.  Cohen, 

N.  J.  B.  B.,  V, 
p.  233,  1887. 

Olivine-diabase. 

Q  10.3 
or  2.8 
ab  19. 9 
an  17.0 

di  30. 7 
hy  3. 8 
mt  13. 7 

Powder  Tower,  Coles- 
burg,  Cape  Colony. 

A.  Bernthsen. 

E.  Cohen, 

N.  J.  B.  B.,  V, 
p.  245,  1887. 

Diabase- 

podphvrite. 

SUBRANG  3.  PRESODIC. 


Q  12.1 

di 

9.4 

Rock  Creek  tunnel, 

L.  G.  Eakins. 

G.  H.  Williams, 

Hornblende- 

Not  described. 

or  4.4 
ab  13.6 
an  28. 1 

hy 

mt 

26.8 

3.1 

Washington,  D.  C. 

B.  U.  S.  G.  S., 
p.  85,  1897. 

148, 

diorite. 

ZrO- 

none 

Q  10.5 

di 

29.4 

Near  Cranberry,  North 

W.  F.  Hille- 

A.  Keith, 

Diabase  (gar- 

S 

NiO 

SrO 

trace 

0.03 

none 

or  1.1 
ab  11.0 
an  30. 9 

hy 

mt 

il 

13.8 

1.9 

0.6 

Carolina. 

brand. 

B.  U.  S.  G.  S., 
p.  52,  1900. 

168, 

netiferous). 

Li,,0 

trace 

ZrO-. 

trace 

Q  10.4 

di 

13.9 

Mazaruni  District. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Diabase. 

Dried  at  100°. 

so3 

FeS2 

0.06 

0.80 

or  ,  0. 6 
ab  17. 8 

hy 

mt 

18.2 

7.0 

British  Guiana. 

Priv.  contrib. 

CoO 

0.55 

an  27.2 

il 

2.3 

Cu 

0. 01 

Pb 

0.02 

Q  8.6 

di 

22.3 

Lobbes  Farm,  n.  Riet- 

Ehrhardt  and 

E.  Cohen, 

Olivine-diabase. 

Iron  oxides? 

or  1. 1 
ab  21.0 
an  25. 3 

hy 

mt 

hm 

8.1 

9.3 

3.7 

fluss,  Orange  River 
Colony. 

Schwedes. 

* 

N.  J.  B.  B.,  V 
p.  233,  1887. 

312 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 


RANG  1.  PERALKALIC.  ORENDASE. 


No. 

Si02 

A12Os 

FeA 

FeO 

MgO 

CaO 

Na20 

K,0 

h20+ 

H20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

54.17 

10. 16 

3.34 

0. 65 

6.  62 

4. 19 

1.21 

11.91 

1.01 

0.  52 

0.  49 

2.  67 

1.59 

0.  06 

0.  59 

100. 21 
0. 17 

2.699 

Al.  I 

.903 

.100 

.021 

.009 

.166 

.075 

.019 

.126 

.033 

.011 

.001 

.004 

100.04 

19° 

2 

54.  08 

9. 49 

3. 19 

1.03 

6.  74 

3.  55 

1.39 

11.  76 

2.  71 

0.  79 

2.  08 

1.35 

0.  05 

0.67 

99.  97 
0.  21 

2.  686 

Al.  I 

.901 

.093 

.020 

.014 

.169 

.063 

.022 

.  125 

.026 

.009 

.001 

.005 

99. 76 

23° 

3 

53.  70 

11.16 

3. 10 

1.21 

6.  44 

3.  46 

1.67 

11. 16 

2.  61 

0. 80 

1.92 

1.75 

0. 04 

0.  62 

100.  40 
0. 19 

2.  627 

Al.  I 

.893 

.109 

.019 

.017 

.161 

.061 

.027 

.119 

.024 

.013 

.001 

.004 

100. 21 

30° 

RANG  1.  PERALKALIC.  ORENDASE. 

1 

51.08 

11.37 

11. 17 

5.64 

3.  96 

5.  20 

5.54 

1.50 

1.31 

0. 19 

2.  67 

0.  39 

0.  22 

100. 24 

A2.  II 

.851 

.in 

.070 

.078 

.099 

.093 

.089, 

.016 

.033 

.003 

.003 

2 

49.  57 

9.61 

5.59 

4.  59 

1.28 

13.91 

4.  90 

3.  23 

0.  38 

none 

0.65 

5.98 

0.  57 

100.  26 

A2.  II 

.826 

.094 

.035 

.064 

.032 

.248 

.079 

.034 

.008 

.042 

.008 

RANG  2.  DOMALKALIC.  KILACASE. 


1 

50.  41 

12.  30 

5.  71 

3.06 

8.  69 

7.08 

0.97 

7.53 

1.80 

0.  46 

1.47 

0. 46 

0. 15 

0.  23 

100.  42 

2.  88 

Al.  I 

.840 

.120 

.  035  I 

.043 

.217 

.127 

.016 

.080 

.018 

.003 

.002 

.002 

29° 

RANG  2.  DOMALKALIC.  KILAUASE. 


1 

49. 13 

9.  05  3.  57 

5.  05 

17.21 

5.  68 

2.  01 

2.  24 

3.50 

0.  84 

0.  42 

0.  38 

0. 15 

0.05 

99.  67 

Al.  I 

.819 

. 088  .  022 

.071 

.430 

.101 

.032 

.023 

.005 

.003 

.002 

— 

2 

48.  95 

12.98  3.63 

4. 68 

11.  73 

7.  66 

2.31 

3.  96 

3. 16 

0.  49 

0.  67 

0. 13  , 

100. 35 

A2.  II 

.816 

.  127  . 022 

.065 

.293 

.136 

.037 

.042 

.006 

.005 

.002 

3 

47.32 

11.22  2.91 

5.81 

15.96 

7. 11 

1.88 

3.  79 

1.71 

0.31 

0. 13 

0.  75 

0.  61 

0.11 

0.  22 

99.  89 

Al.  I 

.789 

.110  .018 

l 

.080 

.399 

.127 

.030 

.040 

.009 

.004 

.002 

.002 

SALFEMANE — LAM  AROSE. 


813 


•  ORDER  5.  PERFELIC.  GALLARE. 

SUBRANG  1.  PERPOTASSIC.  ORENDOSE. 


Inclusive. 

Norm. 

ZrO.. 

0.22 

ks 

4.1 

SO, 

0.16 

ac 

8.8 

Cl 

0.06 

or 

55.6 

di 

0.9 

F 

0. 36 

hv 

16.2 

Cr.iO., 

0.05 

il 

1.4 

Ni'O 

trace 

tn 

3.4 

SrO 

0. 18 

ap 

3.7 

ft 

1.0 

SO, 

0.29 

ks 

4.9 

Cl 

0.04 

Q 

2.2 

ns 

0.2 

F 

0.  49 

or 

51.7 

ac 

9.2 

Cr»03 

0. 07 

di 

1.7 

SrO 

0.20 

hv 

16.1 

LioO 

trace 

il 

2.2 

tn 

3.1 

ap 

3.2 

ft 

1.0 

SO, 

0.06 

ks 

1. 5 

Cl 

0.03 

or 

60.6 

ns 

1.0 

F 

0.44 

ac 

8.8 

Cr203 

0.04 

di 

0.9 

SrO 

0.19 

hy 

10.7 

LioO 

trace 

ol 

4.2 

il 

2.6 

pf 

0.9 

ap 

4.4 

ft 

0.7 

Locality. 


North  Table  Butte, 
Leucite  Hills, 
Wyoming. 


15-mile  Spring, 
Leucite  Hills, 
Wyoming. 


15-mile  Spring, 
Leucite  Hills, 
W  yoming. 


Analyst. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


Reference. 


W.  Cross,  A.  J.  S.,  IV, 
p.  130,  1897. 


W.  Cross,  A.  J.  S.,  IV, 
p.  130,  1897. 


W.  Cross,  A.  J.  S.,  IV, 
p.  130,  1897. 


Author’s  name. 

Remarks. 

Orendite. 

Orendite. 

Wyomingite. 

SUBRANG  4.  DOSODIC. 


Q  1.4 
or  8.9 
ab  46.  6 
an  1.7 

di  18.8 
hy  1. 2 
mt  10.4 
il  5. 1 
hm  4.0 

Front  Royal,  Virginia. 

G.  Steiger. 

A.  Keith, 

14  A.  R.  U.  S.  G.  S., 
II,  p.  305,  1894. 

Andesite. 

Metamor¬ 

phosed. 

or  18.9 
ab  31.4 

ac  8.8 
di  16. 3 
wo  4. 4 
mt  3. 9 
il  1.2 
ap  13. 8 

Ahvenvaara,  Kuuo- 
samo,  Finland. 

N.  Sahlbom. 

V.  Hackman, 

B.  C.  G.  Finl.,  XI, 
p.  36,  1900. 

Pyroxene- 

apatite- 

syenite. 

SUBRANG  2.  DOPOTASSIC.  PROWERSOSE. 


ZrOo 

so3‘ 

Cl 

none 

none 

trace 

or 

ab 

an 

44.5 
4.2 
6.  7 

di  20.4 
ol  8.6 
mt  5. 8 

Two  Buttes,  Prowers 
County,  Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 

Syenitic- 
1am  pro- 

s 

none 

lie 

2.3 

il  2.8 

p.  182,  1887. 

phyre. 

NiO 

0. 04 

hm  1. 6 

SrO 

0.06 

ap  1. 0 

SUBRANG  3.  SODIPOTASSIC.  LAMAROSE. 


Cr„03 

0.39 

or 

12.8 

di 

15.0 

NiO 

trace 

ab 

16.8 

hy 

17.7 

an 

9.8 

ol 

16.9 

mt 

5.1 

il 

5.9 

or 

23.4 

di 

15.0 

ab 

17.8 

ol 

18.5 

an  13. 3 

mt 

5.1 

ne 

0.9 

il 

0.9 

ap 

1.7 

Cr203 

trace 

or 

22.2 

di 

16.4 

NiO 

trace 

ab 

9.4 

ol 

27.8 

SrO 

0.05 

an  11. 1 

mt 

4.2 

LioO 

trace 

ne 

3.4 

il 

1.4 

ap 

1.4 

Bear  Creek,  Madison 
Valley,  Montana. 


Lamar  River,  Yellow¬ 
stone  National 
Park. 


Sunlight  Valley, 
Yellowstone 
National  Park. 


T.  M.  Chatard. 


L.  G.  Eakins. 


H.  N.  Stokes. 


G.  P.  Merrill, 

Pr.  l\  S.  Nat.  Mus., 
XVII,  p.  641,  1895. 


J.  P.  Iddings,  J.  G., 
Ill,  p.  938,  1895. 


Hague  and  Jaggar, 

B.  U.  S.  G.  S.,  168, 
p.  97,  1900. 


Basalt? 


Absarokite. 


Leucite- 

absarokite. 


Near  kental- 
lenose.  - 


Also  in 
M.  U.  S.  G.  S. 
XXXII, 
p.  329,  1899. 


314 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 

RANG  2.  DOMALKALIC.  KILAUASE. 


No. 

Si02 

A1203 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h20+ 

II 20- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

46.  87 

13.  36 

9.  79 

2.  71 

4.35 

14.  70 

4.64 

2. 01 

n.  d. 

1.98 

100.  41 

A3.  Ill 

.781 

.131 

.061 

.038 

.109 

.262 

.075 

.021 

.025 

2 

46.  52 

10.  48 

4.  40 

7.  79 

10.  58 

9.49 

3. 12 

1.  55 

1.  79 

trace 

2.  98 

0.  83 

0. 11 

100. 37 

2.  99 

Al.  I 

.775' 

.103 

.028 

.108 

.  265 

.169 

.050 

.  016 

.037 

.006 

.002 

3 

52.  85 

13.  25 

2.36 

8.  71 

6.  84 

8.  47 

4.  72 

1.53 

0.  93 

0.35 

0.  40 

100.  41 

2.  93 

A2.  II 

.881 

.130 

.015 

.121 

.171 

.151 

.  076 

.016 

.004 

.003 

4 

49.  16 

14. 17 

4.  62 

6.  60 

7. 01 

6.  45 

4.  61 

2.  23 

4.  22 

inH20 

0.  42 

trace 

99.  49 

2.  72 

A3.  Ill 

.819 

.139 

.029 

.092 

.175 

.115 

.074 

.023 

.  C05 

— 

5 

46.  84 

13.  98 

8.  99 

5.  46 

0.  80 

10.41 

3.59 

2.  59 

2.  69 

0.  47 

0.  30 

1.88 

0.  59 

1.  79 

100.  38 

2.  794 

A2.  II 

.781 

.137 

.  056 

.076 

.020 

.186 

.058 

.028 

• 

.023 

.004 

.  026 

6 

44. 17 

11.  24 

9.  97 

6.  22 

6.  55 

10.  77 

3.04 

1.97 

2.  31 

2.  8.3 

99.  07 

4 

B2.  Ill 

.  736 

.110 

.062 

.086 

.164 

.193 

.049 

.021 

.035 

7 

54.  53 

13.  06 

6.  85 

4.  86 

3.  14 

9.  83 

4.  62 

1.59 

1 

0.52 

0.  96 

99.  44 

2.  687 

B2.  Ill 

.909 

.128 

.043 

.068 

.078 

.176 

.074 

.018 

.012 

8 

53.  09 

10.  87 

8.  03 

3.  87 

8.85 

9.  63 

3.23 

1.57 

1.13 

100. 27 

A3.  Ill 

.885 

.106 

.050 

.054 

221 

.171 

.051 

.017 

9 

49.  45 

13.  97 

8. 10 

11.  17 

1.90 

5.92 

5.  05 

1.  75 

1.19 

trace 

0. 16 

0.  85 

99.51 

2.  74 

A2.  II 

.824 

.137 

.050 

.156 

.048 

.105 

.082 

.019 

— 

.001 

.012 

10 

47.  63 

15.  02 

8. 15 

10.  40 

3.  50 

6.  87 

4.92 

1.80 

0.  30 

0.12 

0.  08 

0.  80 

99.  59 

2.  76 

A2.  II 

.794 

.147 

.051 

.144 

.088 

.123 

.079 

.020 

.002 

.001 

.011 

RANG  2.  DOMALKALIC.  KILAUASE. 


1 

A2.  II 

41.  32 

.689 

to  o 

c 

15. 13 

.094 

7.  36 

.102 

3.56 

.089 

10.  33 

.184 

4. 19 

.068 

0.85 

.009 

4.  38 

0.  20 

0.  35 

.004 

0.97 

.007 

99.  59 

RANG 

3.  ALKALICALCIC.  CAMPTONASE. 

1 

49.  71 

13.30 

4.  41 

3.37 

7.96 

8.  03 

1.49 

4.  81 

4.07 

1.  57 

0.  66 

0.17 

0.  46 

100.  01 

Al.  I 

.829 

.130 

.027 

.048 

.199 

.143 

.024 

.051 

.019 

.005 

.  002 

.003 

2 

48.  36 

12.42 

5.  25 

2.48 

9.  36 

8.  65 

1.46 

3.  97 

5.  54 

1.18 

0.  84 

0. 13 

0.29 

99.  93 

Al.  I 

.806 

.122 

.033 

.03* 

.234 

.154 

.023 

.042 

.014 

.006 

.002 

.002 

3 

49.  03 

15. 18 

2.07 

6.32 

6.  05 

12.  58 

1.49 

4.  07 

2.09 

0.  86 

0. 19 

99.  93 

2.  743 

A?3.  III? 

.817 

.149 

.013 

..088 

.151 

.225 

.024 

.043 

.006 

.003 

4 

52.  35 

15.  08 

Trace. 

8.  38 

5.41 

11.  12 

1.  28 

4. 12 

1.84 

0.  85 

trace 

100.  43 

2.  735 

A?3.  III? 

.  873 

.147 

— 

.117 

.135 

.198 

.021 

.043 

.006 

— 

5 

49.  63 

11.90 

2.64 

9. 16 

8.  02 

12.  78 

.  1.08 

3. 58 

1.27 

trace 

trace 

100.  06 

2.  876 

A?3.  III? 

.827 

.117 

.016 

.128 

.201 

.228 

.018 

.038 

— 

— 

25° 

SALFEMANE - ABSaROKOSE. 


315 


ORDER  5.  PERFELIC.  GALLA RE— Continued. 


SUBRANG  4.  DOSODIC.  KILAUOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

1 

or  11.7 
ab  27. 2 
an  9.  7 
ne  6.5 

di  17.0 
wo  13.  7 
mt  3. 2 
il  3.9 
hm  7. 5 

Birdsboro, 

Norristown, 

Pennsylvania. 

H.  Fleck. 

W.  C.  Day, 

19  A.  R.  U.  S.  G.  S., 
VI,  p.  222,  1898. 

Diabase. 

Iron  oxides? 
CaO  high? 

MgO  low? 

X  0.73 

Li20  trace 

• 

or  8.9 
ab  24. 1 
an  10. 3 
ne  1.1 

di  24.6 
ol  14.8 
mt  6. 5 
il  5.7 
ap  1. 9 

Volcano  Butte, 

Castle  Mountains, 
Montana. 

L.  V.  Pirsson. 

. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  130,  1896. 

Basalt. 

or  8.9 
ab  35. 1 
an  10. 6 
ne  2. 6 

di  23.4 
Ol  14. 0 
mt  3. 5 
il  0.6 
ap  1.0 

Cerro  San  Miguel, 
Puebla,  Mexico. 

A.  Hoppe. 

A.  Hoppe,  in  Felix  and 
Lenk,  Btr.  G.  Mex.,  II, 
p.  215,  1899. 

Basalt. 

S  trace 

or  12.8 
ab  29. 3 
an  11. 7 
ne  5. 1 

di  16. 5 
ol  12. 4 
mt  7. 5 

Barenstein,  Thuringia. 

R.  Pohlmann. 

R.  Pohlmann, 

N.  J.  B.  B.,  Ill, 
p.  97,  1885. 

Kersantite. 

Not  fresh. 
Center  of  dike. 
Cf.  No.  8,  ker¬ 
santite,  Pt.  II. 

Q  0.2 
or  15.6 
ab  30.9 
an  14. 2 

di  10.1 
wo  8. 9 
mt  13.  0 
il  3.5 
ap  1.3 

Falkenberg,  Tetsehen, 
Bohemia. 

F.  Ilanusch. 

.1.  E.  Hibsch, 

T.  M.  P.  M.,  XIV, 
p.  107,  1894. 

Nephelite- 

leucite- 

tephrite. 

Alkalies  low? 
MnO  high. 

k 

or  11.7 
ab  15.  7 
an  11.1 
ne  5. 4 

di  33.1 
ol  0.8 
mt  12. 1 
il  5.4 
hm  1. 6 

Mokraja  Wolnowacha, 
Mariupol,  Russia. 

J.  Morozewicz. 

J.  Morozewicz, 
cf.  N.  J.,  1900,  I, 
p.  394. 

Augitite. 

Sum  low. 

Near  monchi- 
quose. 

• 

Q  3.2 
or  10.0 
ab  38.8 
an  10. 0 

di  20.0 
hy  5. 7 
mt  10.0 
il  1.8 

Mount  Kouragio, 
vEgina,  Greece. 

A.  Rohrig. 

H.  S.  Washington, 

J.  G.,  Ill, 
p.  150,  1895. 

/ 

Augi  te¬ 
ll  ypersthene- 
andesite. 

Sum  low. 

Q  2.6 
or  9.5 
ab  26. 7 
an  10. 6 

di  29.0 
hy  9.2 
mt  11.6 

Richmond,  Cape  Col¬ 
ony. 

Kinnicut  and 
Birney. 

E.  Cohen, 

N.  J.  B.  B.,  V, 
p.  234,  1887. 

Diabase. 

or  10.6 
ab  38. 3 
an  10.0 
ne  2. 6 

di  16.4 
ol  7. 9 
mt  11. 6 

Crater  walls,  Ivilauea, 
Hawaii. 

O.  Silvestri. 

0.  Silvestri, 

B.  C.  G.  It.,  XIX, 
p.  178,  1888. 

Basalt. 

or  11.1 
ab  28.3 
an  13. 3 
ne  7. 1 

di  17.5 
ol  9.1 
mt  11.8 

Crater  walls,  Ivilauea, 
Hawaii. 

0.  Silvestri. 

0.  Silvestri, 

B.  C.  G.  It.,  XIX, 

p.  181,  1888. 

Basalt. 

SUBRANG  5.  PERSODIC. 


or  5.0  di  19.3 

Gedern,  Vogelsberg, 

J.  M.  Ledroit. 

J.  M.  Ledroit, 

Basalt. 

A1203  low? 

ab  28. 8  wo  4.9 
ail  8. 3  mt  21. 8 

Hesse. 

Ber.  Oberh.  Ges., 

Fe203  high? 

ne  3. 7  il  0. 6 

XXIV,  p.  152,  1886. 

ap  2. 3 

SUBRANG  2.  DOPOTASSIC.  ABSAROKOSE. 


Cr»03  trace 


Cr._.03  trace 


Li._,0  trace 


or  28. 4  di  15. 6 
ab  12. 6  hy  12.1 
an  15. 2  ol  0.  5 
mt  6. 3 
il  2.9 
ap  1. 6 

Cache  Creek, 
Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  III. 
p.  938,  1895. 

Absarokite. 

Also  in 

M.U.  S.  G.  S., 
XXXII,  II, 
p.  329,  1899. 

or  23.4  di  17.2 
ab  12.1  hy  13.3 
an  15. 8  ol  1.6 
mt  4. 9 
il  2.2 
hm  1.9 
ap  1. 8 

Clark’s  Fork  River, 
Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill, 
p.  938,  1895. 

Absarokite. 

Also  in 

M.U.  S.  G.S., 
XXXII,  II, 
p.  329,  1899. 

or  23.9  di  27.7 
ab  6.3  ol  8.5 
an  22. 8  mt  3. 0 
ne  3.4  ap  2.0 

Toscanella,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Ac.,  1888, 

p.  111. 

Leucite- 

basanite. 

AlsoinN.  J.B.B., 
VI,  p.23,1889. 
Alkalies  low? 

or  23.9  di  22.0 
ab  11. 0  hy  14.  8 
an  23. 1  ol  2. 3 
ap  2.0 

Mezzano,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Ac.,  1888, 

p.  106. 

Leucite- 

tephrite. 

AlsoinN.  J.B.B., 
VI,  p.  19, 1889. 
Alkalies  low? 

or  21.0  di  38.0 

Mte.  Jugo,  Monte- 

L.  Ricciardi. 

L.  Ricciardi, 

Basalt. 

Alkalies  low? 

ab  4. 7  ol  12. 0 
an  17. 0  mt  3. 7 
ne  2.6 

fiascone,  Italy. 

Att.  Soc.  Ital.  Mil., 

.  XXVIII,  p.130,1885. 

316 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  III.  SALFEMANE — Continued. 
RANG  3.  ALKALICALCIC.  CAMPTONASE. 


No. 

Si02 

ai203 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

h2o- 

co.2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

52.  37 

15.  06 

2.  34 

9.  82 

5.38 

7.33 

4.  04 

0.  92 

2.  24 

0.21 

0.  32 

100. 03 

2.  965 

A2.  II. 

.873 

.148 

.014 

.137 

.135 

.130 

.065 

.010 

.003 

.005 

2 

45. 15 

15.  39 

2.  76 

5.  64 

6.  38 

8.  83 

2.  67 

2.  77 

2.  85 

4. 27 

2. 80 

0.  56 

0. 14 

100.  21 

2.  70 

A2.  II 

.  756 

.151 

.017 

.078 

.160 

.158 

.043 

.029 

.035 

.004 

.002 

3 

50.  82 

11.44 

0.25 

8.  94 

14.01 

8. 14 

1.  79 

3. 45 

0.  58 

0. 59 

0.  20 

0. 19 

0.  06 

100. 49 

Al.  I 

.847 

.112 

.002 

.124 

.350 

.145 

.029 

.•037 

.007 

.001 

.003 

— 

4 

46.  90 

10. 17 

1.22 

5. 17 

20.  98 

6.  20 

1.  16 

2.  04 

4.  38 

1.04 

0.  41 

0.  44 

0. 10 

100.  54 

2.  86 

Al.  I 

.782 

.100 

.007 

.072 

.525 

.110 

.019 

.  022 

.005 

.003 

.001 

5 

49.22 

12.02 

2.  77 

8.  80 

9.29 

10. 56 

1.90 

1.  70 

1.63 

0.  27 

0.  95 

0.  43 

trace 

0.  03 

99.  77 

Al.  I 

.820 

.118 

.017 

.  122 

.232 

.189 

.030 

.018 

.012 

.003 

— 

— 

6 

51.76 

12.  36 

4.  88 

4.  60 

9.  57 

7. 14 

1.99 

3.  83 

3.  05 

0.  47 

0.  56 

0.  11 

100.  32 

A2.  II 

.863 

.121 

.030 

.064 

.239 

.127 

•  .032 

.040 

.006 

.004 

.002 

- 

7 

51.68 

14.  07 

4.  71 

4.57 

7.  72 

6.  65 

2.  45 

4:  16 

2.09 

1.  08 

0.  72 

trace 

100. 03 

A2.  11 

.861 

.138 

.029 

.064 

.193 

.119 

.040 

.045 

.013 

.005 

— 

8 

50.  59 

11.53 

1.  83 

7.64 

11.27 

8.  79 

2.  27 

2.  33 

1.76 

0. 21 

0.  80 

0.  48 

0.  17 

0. 10 

99.  90 

Al.  I 

.843 

.112 

.011 

.106 

.282 

.157 

.1537 

.025 

.010 

.003 

.002 

.001 

9 

48.  73 

11.92 

4.  79 

4.  56 

5.93 

9.  24 

2.  62 

2.  47 

1.52 

5.  80 

1.34 

0.32 

0.  36 

trace 

100.  05 

Al.  I 

.812 

.117 

.030 

.064 

.148 

.165 

.042 

.026 

.017 

.002 

.005 

— 

» 

10 

47.  25 

15. 14 

5.05 

4.  95 

6.  87 

9.  98 

2.  39 

2.  60 

2. 12 

0.  40 

1.  87 

1.22 

0.  25 

0. 17 

0.  08 

100.  46 

2.  906 

Al.  I 

.788 

.148 

.032 

.069 

.172 

.178 

.039 

.027 

.015 

.002 

.002 

.001 

2i» 

11 

52.  09 

11.93 

1.84 

7.11 

12. 48 

7.  84 

2.  04 

3.  01 

0.  35 

0. 16 

0.  73 

0.  34 

0. 15 

100.  24 

2.  94 

Al.  I 

.885 

.117 

.012 

.099 

.312 

.140 

.032 

.032 

.009 

.002 

.002 

12 

54.  09 

15.  02 

4. 12 

5. 15 

7.  28 

7.  72 

1.99 

3.55 

1.49 

100. 39 

A3.  Ill 

.902 

.147 

.025 

0. 72 

.182 

.137 

.032 

.038 

13 

50.  35 

15.  76 

2.  32 

7.30 

7.40 

10. 12 

2.  75 

3.  89 

0.  45 

0.  30 

0.  39 

0.  35 

101. 38 

C2.  IY 

.839 

.155 

.015 

.101 

.185 

.181 

.044 

.041 

.004 

.003 

.007 

14 

50.  00 

13.  99 

5. 13 

9. 10 

4.  06 

10.81 

3.  02 

2.  87 

0.  24 

0.  71 

0.  42 

100.  35 

A3.  Ill 

.833 

.137 

.032 

.126 

.102 

.193 

.048 

.030 

.005 

.006 

15 

54.  50 

13.  67 

0.  63 

11.44 

3.25 

6. 41 

2.  97 

3.  07 

0. 13 

0.15 

2. 18 

0.  46 

0.21 

99.  60 

A2.  II 

^908 

.134 

.004 

.159 

.081 

.114 

.048 

.033 

.027 

.003 

.003 

16 

46.  67 

12.  64 

6. 13 

10.07 

5.64 

11.48 

1.64 

2.31 

2.64 

0.  74 

0. 19 

100. 49 

2.  703 

A3.  Ill 

.778 

.124 

.038 

.140 

• 

.141 

.205 

.026 

.024 

.005 

.003 

11° 

17 

45.  57 

13.  07 

6.  72 

12.  43 

2.  80 

6.  79 

2.04 

3.  36 

6.  06 

0.52 

0. 21 

99.  85 

2.  331 

A3.  Ill 

.760 

.128 

.042 

.172 

.070 

.121 

.032 

.036 

.004 

.003 

11° 

SALFEMANE - KENTALLENOSE. 


317 


ORDER  5.  PERFELIC.  GALLARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  KENTALLENOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  5. 6 
ab  34. 1 
an  20. 3 

di 

hy 

of 

rnt 

13.1 

14.4 

6.5 

3.2 

Meriden,  Connecticut. 

J.  F.  Pratt. 

W.  C.  Day, 

18  A.  R.  U.  S.  G.  S., 

Y,  p.  958,  1897. 

Diabase. 

LLO 

trace 

or  16. 1 
ab  18. 9 
an  22. 0 
ne  2.0 

di 

ol 

Hit 

il 

ap 

15.0 

8.7 

3.9 

5.4 

1.3 

Fourmile  Creek, 

Castle  Mountains, 
Montana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  112,  1896. 

Augite- 

vogesite. 

Not  fresh. 

Cr»03 

NiO 

0.03 

trace 

or  20. 6 
ab  12. 6 
an  12. 8 
ne  1.4 

di 

ol 

mt 

il 

22.3 

28.6 

0.5 

1.1 

Bet.  South  Boulder 
and  Antelope 

Creeks,  Montana. 

L.  G.  Eakins. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat,  Mus., 
XVII,  p.  670,  1895. 

Lamprophyre. 

Cr203 

0.33 

or  12.2 
ab  10.0 
an  16. 4 

di 

hy 

ol 

mt 

il 

ap 

9.5 
13.0 
30.3 

1.6 
0.8 
1.0 

Fort  Ellis,  n.  Boze¬ 
man,  Montana. 

T.  M.  Chatard. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat,  Mus., 
XVII,  p.  640,  1895. 

Basalt? 

Not  fresh. 

so3 

Cl 

s 

SrO 

0. 04 

0.08 

0.05 

0.03 

or  10. 0 
ab  1 5. 7 
an  19.  5 

di 

hy 

ol 

mt 

il 

ap 

24.5 

14.5 
6.6 
3.9 
1.8 
1.0 

Red  Mountains, 
Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

J.  G.,  VII, 
p.  739,  1899. 

Gabbro. 

Contact  facies 
of  granite. 

or  22.2 
ab  16.8 
an  13. 6 

di 

hy 

mt 

il 

ap 

14.4 

21.0 

7.0 

0.9 

1.4 

Raven  Creek, 
Yellowstone 
National  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

J.  G.,  Ill,  p.938, 1895. 

Absarokite. 

Also  in  M.  U.  S. 
G.S.  XXXII, 
p.  329,  1899. 

SO., 

LLO 

0.13 

trace 

or  25. 0 
ab  21.0 
an  14.  7 

di 

hv 

of 

mt 

il 

ap 

11.7 

13.1 

2.7 

6.7 
2.0 

1.7 

Two  Ocean  Pass, 
Yellowstone 

National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

M.U.  S.G.S.,  XXXII, 
p.  329, 1899. 

Absarokite. 

SO, 

Cl 

V,0, 

NiO 

SrO 

Li.,0 

none 

trace 

0.04 

0. 06 

0.03 

trace 

or  13.8 
ab  19.4 
an  13. 9 

di 

hy 

ol 

mt 

il 

ap 

22.4 

8.7 

14.1 

2.6 

1.5 

1.0 

Indian  Creek  lac¬ 
colith,  Yellowstone 
National  Park. 

W.  F.  Hille- 
brand. 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  83, 1899. 

Augite- 

andesite. 

Lower  part  of 
sheet;  cf.  No. 
1 2 ,  monzon- 
ose. 

so3 

Cl 

Li.,0 

0.34 

0.11 

trace 

Q  1.4 
or  14.5 
ab  22.0 
an  13.6 

di 

hy 

mt 

il 

25. 6 
5.0 
7.0 
2.5 

Bighorn  Pass, 
Yellowstone 
National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 
M.U.S.G.S.,  XXXII, 
p.  70, 1899. 

Kersantite. 

Not  fresh. 

S 

V.03 

NiO 

SrO 

Li20 

none 

0.05 

0.02 

0.05 

trace 

or  15. 0 
ab  17.8 
an  22. 8 
ne  1.4 

di 

ol 

mt 

il 

21.4 

7.2 
7.4 

2.3 

Snowstorm  Peak, 

La  Plata  Mts., 
Colorado. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  1698, 
p. 162, 1900. 

Camptonite. 

Not  fresh. 

Cr203 

NiO 

0.10 

0. 07 

or  17.8 
ab  16. 8 
an  14.7 

di  19.4 
hy  14.9 
ol  12. 3 
mt  2.8 
il  1.4 

Glen  Shira, 
Argyllshire, 
Scotland. 

W.  Pollard. 

. 

Hill  and  Kynaston, 

Q.  J.  G.  S.,  LVI, 
p.  537, 1900. 

Kentallenite. 

Q  2.3 
or  21.1 
ab  16.8 
an  21. 4 

di 

hy 

mt 

13.5 

17.9 

5.8 

Ben  an  Fhurain, 
Inchnadampf, 
Scotland. 

. 

J.  J.  H.  Teall. 

J.  J.  H.  Teall, 

G.M.,  XXIII, p.  350, 
1886. 

Diorite- 

porphyrite. 

Near  shoshon- 
ose. 

or  22.8 
ab  11.0 
an  18.  3 
ne  6.5 

di 

ol 

mt 

il 

ap 

23.6 

13.1 

3.5 

0.6 

1.0 

Smiilingen,  Fahlun, 
Sweden. 

L.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.  II,  p.  46, 1895. 

Olivine- 

monzonite. 

Sum  high. 

so3 

Cl 

trace 

trace 

or  16. 7 
ab  22. 0 
an  16. 4 
ne  1. 7 

di 

ol 

mt 

ap 

26.8 

6.8 

7.4 

1.7 

Lava  of  1891, 
Stromboli, 
iEolian  Islands. 

L.  Ricciardi. 

Ricco  and  Mercalli, 

Ann.  Uff.  Meteor,  XI, 
p. 202, 1892. 

Basalt. 

Cl 

s 

0.12 

0.25 

Q  3.3 
or  18.3 
ab  25.  2 
an  14.  7 

di 

hy 

mt 

il 

ap 

12.0 

19.0 

0.9 

4.2 

1.1 

Goroschki,  Volhvnia, 
Russia. 

W.  Tarassenko. 

W.  Tarassenko, 
cf.  N.  J.,  1899, 1, 
p.  463. 

Pyroxene- 

syenite. 

Cr,03 

0. 34 

or  13.3 
ab  13. 6 
an  20. 6 

di 

hv 

of 

mt 

ap 

26.4 

8.3 

4.5 

8.8 

1.7 

Assab, 
n.  Massowa, 
Abyssinia. 

L.  Ricciardi. 

L.  Ricciardi, 

B.  Soc.  G.  I tal.,  V, 
p.  58, 1886. 

Basalt. 

Cr203 

0.28 

• 

or  20.0 
ab  16.8 
an  16. 7 

di  11.4 
hy  14.6 
ol  2.9 
mt  9. 7 
ap  1. 3 

Assab, 

n.  Massowa, 
Abyssinia. 

L.  Ricciardi. 

L.  Ricciardi, 

B.Soc.G.  Ital.,  V, 
p.  59,1886. 

Basalt. 

Not  fresh. 

318 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE — Continued. 
RANG  3.  ALKALI  CALCIC.  CAMPTONASE. 


' 

No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

43.  94 

16. 17 

3.96 

10.  06 

5.  05 

9.  59 

2. 93 

1.51 

1.42 

0. 13 

0.09 

4. 13 

0.  69 

trace 

none 

99.  67 

A2.  II 

.732 

.159 

.025 

.140 

.126 

.171 

.047 

.016 

.052 

.005 

— 

2 

42.  73 

14.  50 

4.03 

7.  28 

5.  46 

8.  46 

3.11 

2.  28 

3.  08 

0.  36 

3.  76 

4.  30 

0.  93 

0.  19 

trace 

100.  65 

Al.  I 

.713 

.142 

.  025 

.101 

.137 

.151 

.050 

.023 

.054 

.006 

.003 

— 

3 

48.  22 

14.  27 

2.  46 

9.00 

6.  24 

8.  45 

2.  90 

1.93 

1.  66 

0.  28 

0. 15 

2.  79 

0.  64 

0.20 

0.  04 

99.  80 

Al.  I 

.804 

.140 

.015 

.125 

.156 

.151 

.047 

.020 

.035 

.004 

.003 

— 

4 

47. 12 

14.  43 

3.33 

11.71 

6.  05 

9.  63 

2.  58 

1.  11 

0.  34 

0.  28 

3.  27 

99.  85 

3.  072 

A2.  II 

.785 

.142 

.021 

.163 

.151 

.172 

.042 

.012 

.041 

12° 

5 

52.  37 

15.  06 

2.  34 

9.  82 

5.38 

7.33 

4.  04 

0.  92 

2.  24 

0.  21 

0.  32 

100.  03 

A2.  II 

.873 

.147 

.015 

.137 

.135 

.  .130 

.065 

.010 

.003 

.005 

6 

47. 16 

14.  45 

1.61 

13.81 

5.24 

8.  13 

3.  09 

1.20 

0.48 

0. 12 

0.  35 

3.  37 

0.57 

0.  24 

trace 

99.98 

Al.  I 

.  786 

.142 

.010 

.192 

.131 

.144 

.050 

.013 

.042 

.004 

.003 

— 

7 

46.  74 

16.  63 

2.17 

10.  60 

6.11 

8.  66 

3.81 

0.  86 

0.  73 

0. 12 

0.  07 

2.54 

0.  33 

0.  26 

trace 

99.  77 

Al.  I 

.779 

.163 

.014 

.147 

.153 

.154 

.061 

.009 

.032 

.002 

.004 

— 

8 

44.  77 

12.  46 

4.  63 

12.  99 

5.34 

10.  20 

2.  47 

0. 95 

0.  48 

0. 12 

0.  37 

5.  26 

0.  28 

0.17 

trace 

100.  75 

3.  090 

Al.  I 

.736 

.122 

.029 

.180 

.134 

.182 

.040 

.010 

.064 

.002 

.002 

— 

9 

50.  34 

15.  23 

2.  82 

11.17 

5.  81 

9.61 

2.  93 

1.02 

0.  07 

0. 19 

1.56 

0.  20 

0. 14 

101. 09 

2.  968 

B2.  Ill 

.839 

.149 

.018 

.155 

.145 

.172 

.047 

.011 

.019 

.001 

.002 

10 

48.11 

14.  74 

2.  54 

11.85 

5. 10 

6.  72 

2.  92 

1.92 

1.  73 

0.  27 

3. 17 

0.  44 

0. 19 

0.  04 

99, 96 

Al.  1 

.802 

.144 

.015 

.165 

■  .128 

.120 

.047 

.020 

.040 

.003 

.003 

11 

48.85 

15.  83 

2.  50 

10.  79 

5.  82 

6.  20 

2.  79 

1.31 

3.  77 

0.  27 

none 

1.28 

0.  22 

0. 11 

none 

99.  89 

Al.  1 

.814 

.155 

.016 

.150 

.146 

.110 

.045 

.014 

.016 

.002 

.002 

12 

45.  65 

15.  20 

6.  71 

13.  81 

2.  95 

6.  33 

3.  09 

1.05 

2.  29 

1.66 

0.  25 

0.  71 

none 

99.  70 

Al.  1 

.761 

.149 

.042 

.192 

.074 

.112 

.050 

.011 

.021 

.002 

.010 

• 

13 

48.47 

16.  07 

4. 12 

7.  47 

5.96 

4.  84 

2.  43 

1.41 

4.  63 

2.  30 

1.51 

0.  44 

0.  23 

0.  03 

100. 15 

Al.  I 

.808 

.157 

.026 

.104 

.149 

.086 

.039 

.015 

.019 

.003 

.003 

14 

53.  56 

16.  07 

3.  21 

5.29 

7.23 

8.  77 

3.  06 

1.94 

0. 19 

0.  68 

0. 18 

0.11 

100.  29 

* 

A2.  II 

.893 

.158 

.020 

.073 

.181 

.157 

.049 

.021 

.008 

.001 

.002 

15 

51.81 

15.  24 

3.  66 

4.  86 

8.  89 

9.  06 

2. 83 

2.  08 

0.  67 

0.  77 

0.18 

0.  08 

100. 13 

A2.  II 

.864 

.149 

.023 

.068 

.  222 

.162 

.045 

.022 

.010 

.001 

.001 

16 

51.  70 

15. 18 

2.09 

8.  54 

8. 18 

8.  73 

2.31 

1.81 

0. 16 

1.24 

0.21 

trace 

100.  24 

Al.  I 

.862 

.149 

013 

.119 

.205 

.155 

.037 

.020 

.015 

.002 

— 

• 

SALFEMANE - CAMPTONOSE. 


3H> 


ORDER  5.  PERFELIC.  GALLARE— Continued. 


SUBRAN (4  4.  DOSODIC.  CAMPTONOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  8. 9 
ab  19.9 
an  26. 7 
ne  2.6 

di  16.0  : 
ol  9.4  | 
mt  4.8  [ 
il  8.0  1 
ap  1.6  1 

Locke’s  Hill,  Mount 
Belknap,  New 
Hampshire. 

H.  S.  Washing¬ 
ton. 

Not  published. 

Hornblende- 

gabbro. 

Cl 

s 

NiO 

CuO 

trace 

0.18 

trace 

none 

or  12.8 
ab  21. 0 
an  19.2 
ne  2.8 

di  16.9 
ol  6.8 
mt  5. 8 
il  8.3 
ap  2. 5 

Mount  Gunstock, 
Mount  Belknap, 

New  Hampshire. 

H.  S.  Washing¬ 
ton. 

Not  published. 

Camptonite. 

Not  fresh. 

so3 

Cl 

F 

FeSj 

NiO 

none 

0.10 

0.05 

0.36 

0.03 

or  11.1 
ab  24. 6 
an  20. 3 

di  15. 1 
hv  9. 2 
ol  6. 4 
mt  3. 5 
il  5.4 
ap  1. 3 

Mount  Ascutney, 
Vermont. 

W.  F.  Hille- 
brand. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  70, 1897. 

Camptonite. 

or  6.7 
ab  22. 0 
an  24.  5 

di  19.3 
hv  7.3 
ol  8.6 
mt  4. 9 
il  6.3 

Rockport,  Cape  Ann, 
Massachusetts. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.G.,  VII, 
p. 289, 1899. 

Diabase. 

or  5.6 
ab  34. 1 
an  20. 0 

di  13.5 
hy  14.6 
ol  6. 2 
mt  3. 5 

Middlefield, 

Connecticut. 

J.  H.  Pratt. 

H.  E.  Gregory, 

B.U.  S.  G.S.,165, 
p.  176, 1900. 

Diabase. 

S 

Cr»03 

NiO 

SrO 

Li20 

0. 14 
trace 
0.02 
trace 
trace 

or  7.2 
ab  26.2 
an  22. 0 

di  12. 5 
hv  8. 1 
ol  12.8 
mt  2. 3 
il  6.4 
ap  1.3 

Elizabethtown, 

Essex  County, 

New  York. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

B.U.S.  G.S.,168, 
p.  37, 1900. 

Norite. 

S 

Cr203 

NiO 

SrO 

Li20 

0.11 

trace 

0.03 

trace 

trace 

or  5.0 
ab  26. 2 
an  25. 0 
ne  3. 1 

di  14.9 
ol  15. 9 
mt  3. 2 
il  4.9 

Elizabethtown, 

Essex  County, 

New  York. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

B.  U.  S.  G.  S.,  168, 
p.  37, 1900. 

Norite. 

Derived  from 
No.  9,  auver- 
gnose  by 
pressure. 

S 

NiO 

0.26 

trace 

or  5.6 
ab  21.0 
an  19.5 

di  25.9 
hy  4.0 
ol  5.9 
mt  6. 7 
il  9.9 

Lincoln  Pond,  Essex 
County,  New  Tork. 

G.  Steiger. 

J.  F.  Kemp, 

19  A.  R.U.  S.G.S.,  III, 
p. 407, 1899. 

Gabbro. 

or  6.1 
ab  24. 6 
an  25. 3 

di  18.7 
hy  12.8 
ol  5. 9 
mt  4.2 
il  2.9 

Rocky  Hill,  New 
Jersey. 

A.  H.  Phillips. 

A.  H.  Phillips, 

A.  J.S.,  VIII, 
p.  279, 1899. 

Basalt. 

Sum  high. 

FeSo. 

Cr»03 

v2o3 

NiO 

Sr© 

Li.,0 

0. 13 

0. 01 

0. 03 

0. 03 

0.02 

trace 

or  11.1 
ab  24. 6 
an  21. 4 

di  7.9 
hy  17.3 
ol  4.5 
mt  3. 5 
il  6.2 
ap  1.0 

Limestone  Cove, 
Unicoi  County, 
Tennessee. 

W.  F.  Hille- 
brand. 

A.  Keith, 

B.  U.  S.  G.  S.,  168, 
p.  59, 1900. 

Gabbro. 

S03 

SrO 

0.06 

0.09 

or  7. 8 
ab  23. 6 
an  26. 7 

di  3.2 
hy  26.4 
ol  1.7 
mt  3. 7 
il  2.4 

Marquette  district, 
Michigan. 

G.  Steiger. 

C.  R.  Van  Hise, 

B.U.S.  G.S.,148, 
p.  98, 1897. 

Altered 

greenstone 

(diabase). 

Not  described. 

SrO 

none 

or  6. 1 
ab  26. 2 
an  24. 5 

di  5. 2 
hy  19.5 
Ol  1.7 
mt  9.7 
il  3.2 

Duluth,  Minnesota. 

A.  N.  Winchell. 

A.  N.  Winchell, 

A.  G.,NXVI, 
p. 293, 1900. 

Orthoclase- 

gabbro. 

FeS., 
NiO 
SrO 
Li20 
]•  Cu 

0.24 

trace 

trace 

trace 

trace 

Q  6.2 
or  8. 3 
ab  20. 4 
an  23. 9 
C  1.7 

hy  22.8 
mt  6.0 
il  2.9 

Black  Jack  Mine, 
Silver  City, 

Idaho. 

W.  F.  Hille- 
brand. 

i 

W.  Lindgren, 

20  A.  R.  U.  S.  G.  S., 
Ill,  p.  176,  1900. 

Diabasic  basalt. 

Not  fresh. 

Q  0.1 
or  11.7 
ab  25. 7 
an  24. 5 

di  15.6 
hy  16.5 
mt  4.6 
il  1.2 

Hurricane  Ridge, 
Crandall  Basin, 
Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  260,  1899. 

Mica-gabbro- 

porphyry. 

Near  andose. 

or  12. 2 
ab  23. 6 
an  22. 8 

di  17.6 
hy  10.4 
ol  5. 9 
mt  5.3 
il  1.5 

Hurricane  Ridge, 
Crandall  Basin, 
Yell.  Nat.  Park. 

L.  G.  Eakins. 

J.  P.  Iddings, 

M.  U.  S.  G.  S., 
XXXII,  p.  260,  1899. 

Gabbro- 

porphyry. 

Cl 

s 

trace 

0.09 

or  11.1 
ab  19. 4 
an  25. 6 

di  14.3 
hy  20.8 
Ol  3.6 
mt  3.0 
il  2.3 

Dunraven  Peak, 
Yellowstone 
National  Park. 

F.  A.  Gooch. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  135,  1897.  ’ 

Basalt. 

320 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 
RANG  3.  ALKALICALCIO.  CAMPTOXASE— Continued. 


No. 

SiOj 

A1A 

Fe,03 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

r 

Sum 

Sp.  gr. 

17 

50.  72 

16.01 

4.  35 

4.  20 

7.  06 

9.  02 

2.92 

1. 13 

2. 14 

0.  40 

0.85 

1.08 

0.29 

0.07 

0. 11 

100. 44 

Al.  I 

.845 

.  157 

.027 

.058 

.187 

.160 

.047 

.012 

.013 

.002 

.001 

.001 

18 

47.  28 

11.56 

3.  52 

5.  71 

13.17 

9.20 

2.  73 

2. 17 

2.  96 

0.  88 

0.  59 

0. 13 

100.  08 

A2.  II 

.788 

.113 

.022 

.079 

.329 

.164 

.043 

.023 

.011 

.004 

.002 

19 

48.  35 

15.  47 

4.  80 

7.  58 

8. 15 

8.81 

3.09 

0.95 

0.  73 

0.  28 

1.  33 

0.  33 

0.  21 

0.  06 

100. 26 

2.  970 

Al.  I 

.806 

.152 

.030 

.106 

.204 

.157 

.050 

.010 

.016 

.002 

.003 

— 

21°.  5 

20 

43.  98 

13.  30 

3.  67 

6.  92 

7.03 

10.  66 

2. 15 

1.64 

1.52 

0.  42 

6.  46 

1.  18 

0.32 

0.  22 

0.  06 

100. 15 

2.  912 

Al.  I 

.733 

.130 

.023 

.096 

.  176 

'  .190 

.035 

.017 

.015 

.002 

.003 

— 

19°.  5 

21 

54.  56 

16.  04 

0.  95 

6.  07 

8.  71 

8.89 

3.  05 

1. 18. 

0.  28 

0.53 

0. 18 

0. 17 

0.  03 

100. 38 

Al.  I 

.909 

.157 

.006 

.085 

.218 

.159 

-.049 

.013 

.007 

.001 

.002 

— 

22 

53. 46 

14.81 

2.  60 

5. 15 

7.27 

8.44 

2.  60 

1.30 

2.13 

0.12 

0.  44 

0.  70 

0. 16 

0. 18 

0.  05 

99.  76 

Al.  I 

.891 

.145 

.016 

.072 

.182 

.150 

.042 

.014 

.009 

.001 

.003 

— 

23 

51.27 

12.  14 

2.51 

6.  71 

10.  88 

10.  32 

2.  00 

1.63 

1. 16 

0. 17 

0.  60 

0.21 

0.21 

0.  07 

99.  92 

Al.  I 

.855 

.119 

.015 

.093 

.272 

.184 

.032 

.017 

.008 

.002 

.003 

.001 

24 

54.  64 

12.09 

1.81 

5.03 

11.86 

7.  74 

2.35 

1.01 

2.44 

0.12 

none 

0.  61 

trace 

0. 13 

0. 05 

100.  01 

Al.  I 

.911 

.119 

.011 

.070 

.297 

.138 

.038 

.011 

.008 

— 

.002 

— 

25 

50.  66 

13.97 

2.  55 

10.  20 

4.  45 

8.  08 

3. 32 

1.95 

0.  43 

0.  27 

none 

2.39 

1.01 

0.  29 

0.  22 

99.81 

Al.  I 

.844 

.137 

.016 

.141 

.in 

.144 

.053 

.020 

.030 

.007 

.004 

.002 

26 

47.  91 

14.26 

1.65 

7.80 

10.  83 

9.  60 

3.01 

1.89 

0.37 

2.  70 

trace 

100.  02 

A2.  11 

.799 

.140 

.010 

.108 

.271 

.171 

.048 

.020 

.034 

' 

a 

27 

45.30 

14.  95 

1.98 

9.  32 

8.  29 

8.  87 

4.  27 

1.27 

0.  85 

2.  66 

2.  23 

trace 

99.  99 

A2.  II 

.  755 

.147 

.012 

.129 

.207 

.159 

.069 

.013 

.033 

.015 

— 

28 

49.  83 

15.  11 

9.  78 

2.  57 

7.  55 

8.  92 

2.  84 

1.32 

1.00 

0.  09 

0. 16 

0. 17 

0.  05 

none 

100. 11 

Al.  I 

.831 

.148 

.061 

.036 

.189 

.159 

.045 

.014 

.002 

.001 

.001 

— 

29 

49. 12 

13.  82 

6.  76 

12.53 

3. 19 

8.  70 

2.  49 

1.26 

0.  78 

0.  80 

0.  08 

99.  53 

A2.  II 

.819 

.135 

.042 

.174 

.080 

.155 

.040 

.014 

.010 

.001 

30 

52.  47 

12. 15 

3.47 

5.23 

9.  94 

9.  71 

2.81 

2.  26 

1.62 

0.  54 

100.  20 

A3.  Ill 

.875 

.119 

.022 

.072 

.249 

.173 

.045 

.024 

31 

47.  45 

14.  83 

2.  47 

14.  71 

5.00 

8.  87 

2.97 

0.  99 

1.00 

0.  36 

1.47 

100. 12 

A3.  Ill 

.791 

.  145 

.015 

.204 

.125 

• 

.159 

.048 

.011 

0.18 

32 

51.22 

14.06 

4.  32 

8.  73 

4.  42 

8.  33 

2.  55 

1.25 

1.28 

— 

0. 19 

2.  42 

0.  25 

0. 16 

99.  67 

2.98 

A2.  II 

.854 

.138 

.027 

.121 

.111 

.148 

.042 

.014 

.030 

.002 

.002 

33 

50.  71 

14.  78 

3.  52 

8.  95 

5.90 

8.21 

2.  76 

1.39 

1.  78 

0.25 

1.92 

0.  31 

100.  48 

2.  944 

A2.  II 

.845 

.145 

.022 

.125 

.148 

.146 

.044 

.015 

.  023 

.004 

SALFEMANE - CAMPTONOSE. 


321 


ORDER  5.  PERFELIC.  GALL  ARE— Continued. 

SUBRANG  4.  DOSODIC.  CAMPTONOSE— Continued. 


Inclusive. 

Norm. 

Cr,03 

none 

Q  1.7 

di 

14.0 

NiO 

none 

or  6. 7 

by 

14.3 

SrO 

0.09 

ab  24.  6 

nit 

6.3 

LioO 

trace 

an  27. 2 

il 

2.0 

Cl 

0.18 

or  12.8 

di 

17.9 

ab  15.  2 

ol 

21.8 

an  19. 5 

mt 

5.1 

lie  4. 0 

il 

1.7 

ap 

1.4 

ZrO., 

none 

or  5. 6 

di 

14..  7 

so3 

0. 07 

ab  26. 2 

hy 

6.  7 

s 

trace 

an  25. 6 

ol 

10.5 

Cr203 

trace 

mt 

7.0 

NiO 

0.02 

il 

2.5 

SrO 

0.03 

FeS2 

0.54 

or  9.5 

di 

25.5 

NiO 

0.03 

ab  15. 7 

ol 

9.3 

SrO 

0.05 

an  21. 7 

mt 

5.3 

LioO 

trace 

ne  1.4 

il 

2.3 

Cr203 

trace 

or  7. 2 

di 

14.4 

SrO 

trace 

ab  25. 7 

hy 

22.9 

LioO 

trace 

an  26. 4 

ol 

1.3 

mt 

1.4 

il 

1.1 

FeSo 

0.26 

Q  5.2 

di 

13.9 

NiO 

0.05 

or  7.8 

hy 

17.7 

SrO 

trace 

ab  22. 0 

mt 

3.7 

LioO 

trace 

an  24. 7 

il 

1.3 

NiO 

0.04 

or  9. 5 

di 

25.4 

SrO 

trace? 

ab  16. 8 

hy 

16.5 

LioO 

trace 

an  19. 5 

of 

.5.7 

mt 

3.5 

il 

1.2 

NiO 

0.05 

Q,  3.6 

di 

15.3 

SrO 

trace 

or  6. 1 

hy 

29.3 

LioO 

trace 

ab  19.9 

mt 

2.6 

an  19.5 

il 

1.2 

Cl 

0.02 

or  11.7 

di 

14.0 

NiO 

trace 

ab  27. 8 

hy 

17.9 

SrO 

trace 

an  17. 5 

mt 

3.7 

LioO 

trace 

il 

4.6 

ap 

2.2 

LioO 

trace 

or  11.1 

di 

19.9 

ab  15. 2 

ol 

18.7 

an  22. 8 

mt 

2.3 

ne  5.4 

il 

5.3 

or  7.2 

di 

7. 7 

ab  25.  2 

ol 

20.4 

an  20.  9 

mt 

2.8 

ne  6. 0 

il 

5.1 

ap 

5.0 

Zr02 

none 

Q  2.3 

di 

15.0 

Cl 

0.02 

or  7. 8 

hy 

12.0 

s 

none 

ab  23. 6 

mt 

8.4 

CoO 

0.64 

an  25. 0 

hm 

4.0 

Cu 

0.05 

Pb 

0.01 

Q  3.4 

di 

17.4 

or  7. 8 

hy 

15.4 

ab  21.0 

mt 

9.7 

an  22. 5 

il 

1.5 

or  13.3 

di 

28. 2 

ab  23. 6 

hy 

5.4 

an  13.9 

ol 

8.6 

mt 

5.1 

or  6. 1 

di 

17.1 

ab  25.2 

hy 

1.8 

an  23. 9 

ol 

18.4 

mt 

3.5 

il 

2.8 

FeS2 

0.49 

Q  6.8 

di 

14.9 

or  7.8 

hy 

12.3 

ab  22.0 

mt 

6.  3 

an  22. 8 

il 

4.6 

Q  1.9 

di 

13.7 

or  8. 3 

hv 

18.7 

ab  23. 1 

mt 

5.1 

an  23.9 

il 

3.5 

Locality. 


Eagle  Creek, 
Yellowstone 
National  Park. 

Ishawooa  Canyon, 
Wyoming. 


San  Rafael  Flow, 
Colfax  County, 
New  Mexico. 


Indian  Trail  Ridge, 

La  Plata  Mountains, 
Colorado. 

Cinder  Cone, 
California. 


Near  Sonora, 
Tuolumne  County, 
California. 

Milton,  Sierra  County, 
California. 


Near  Table  Mountain, 
Butte  (  ountv, 
California. 

Oroville,  Table  Moun¬ 
tain,  Butte  County, 
California. 


American  Flat  Creek, 
Washoe,  Nevada. 


Near  Mount  Trum¬ 
bull,  Arizona. 


Mazaruni  District, 
British  Guiana. 


Cape  Weissenfels, 
King  Charles  Land, 
Spitzbergen. 

Inchnadampf, 

Assvnt,  Scotland. 


Scourie, 

Sutherlandshire, 

Scotland. 


Whin  Sill, 

Durham,  England. 


Whin  Sill, 
Northumberland, 
England. 


14128— No.  14—03 - 21 


Analyst. 


H.  N.  Stokes. 


J.  E.  Whit¬ 
field. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hi  lie- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


W.  F.  Hille- 
brand. 


S.  L.  Penfield. 


L.  G.  Eakins. 


J.  B.  Harrison. 


N.  Sahlbom. 


J.  J.  H.  Teall. 


J.  J.  H.  Teall. 


J.  J.  H.  Teall. 

J.  J.  H.  Teall. 


Reference. 

Author’s  name. 

Remarks. 

Hague  and  Jaggar, 

B.  IJ.  S.  G.  S.,  168, 
p.  97,  1900. 

Llornblende- 

pyroxene- 

andesite. 

A.  Hague, 

A.  J.  S.,  XXXVIII, 
p.  46,  1889. 

Leucite- 

phonolite. 

Leucite-absaro- 
kite,  in  J.  P. 
hidings,  J.G., 
III,  p.  938, 
1895. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  171,  1900. 

Plagioclase- 

basalt. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  163,  1900. 

Camptonite. 

Not  fresh. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  79, 
p.  29,  1891. 

Quartz-basalt. 

Dried  at  105°. 

H.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  731,  1896. 

Diorite. 

Near  andose. 

IT.  W.  Turner, 

17  A.  R.  U.  S.  G.  S., 

I,  p.  734,  1896. 

Diabase- 

porphyry. 

H.  W.  Turner, 

17  A.  R.  U.S.G.  S.,I, 
p.  731,  1896. 

Quartz-diorite. 

H.  W.  Turner, 

14  A.  R.  U.  S.  G.S.,11, 
p.  491,  1894. 

Basalt. 

Hague  and  Iddings, 

B.  U.  S.  G.S.,17, 
p.  33,  1885. 

Basalt. 

B.  U.  S.  G.  S.,  148, 
p.  188,  1897. 

Lava., 

Not  described. 

J.  B.  Harrison, 

Priv.  contrib. 

Epidiorite. 

“Altered  gab- 
bro.” 

A.  Hamberg, 

G.  F.  F.,  XXI, 
p.  523,  1899. 

Basalt. 

J.  J.  H.  Teall, 

G.  M.,  XXIII, 
p.  350,  1886. 

J.  J.  LI.  Teall, 

Q.  J.  G.  S.,  XLI, 
p.  loo,  1885. 

Diorite. 

Dolerite. 

“Plagioclase- 
p  y  roxe  n  e- 
horn  blende 
rock.” 

J.  J.  H.  Teall, 

Q.  J.  G.  S.,  XL, 
p.  654,  1884. 

Diabase. 

Dried  at  110°. 

J.  J.  H.  Teall, 

Q.  .T.  G.  S.,  XL, 
p.  654,  1884. 

Diabase. 

Dried  at  110°. 

322 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 

RANG  3.  ALKALICALCIC.  CAMPTONASE— Continued. 


No. 

Si02 

A1A 

Fe-A 

FeO 

MgO 

CaO 

Na,0 

k2o 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

34 

47.  90 

16.  55 

5.  67 

7.50 

4.  44 

9.  35 

3.  23 

2.  08 

0.  20 

1.91 

0.  32 

0.  60 

99.  75 

A3.  Ill 

.798 

.  162 

.035 

.104 

.ill 

.167 

.  045 

.022 

.023 

.002 

.009 

35 

45.  55 

15.  40 

2.  43 

9. 12 

5.  20 

7.70 

4.  54 

2.04 

2.  35 

2. 15 

4.45 

100.  93 

B2.  Ill 

.  759 

.151 

.015 

.127 

.130 

.137 

.063 

.022 

.056 

36 

44.  22 

12.  73 

5.  68 

5. 18 

6.  98 

11.57 

2. 12 

1.71 

2.  74 

3.  66 

2.50 

1.05 

0.  45 

100.  59 

A2.  II 

.737 

.125 

.036 

.072 

.175 

.207 

.034 

.018 

.031 

.008 

.006 

• 

37 

51.  23 

12.  70 

4.00 

10.  48 

6.51 

8.  40 

3.04 

1. 55 

0.  39 

1.21 

0. 19 

trace 

99.  70 

A2.  II 

.854 

.  124 

.025 

.146 

.163 

.150 

.049 

.017 

.015 

.001 

— 

38 

50. 15 

15.  02 

5.17 

5. 17 

6.  90 

8.  25 

2.  59 

1.33 

4.  08 

0.32 

0.  33 

0.  26 

99.  66 

2.  753 

A2.  II 

.836 

.147 

.032 

.072 

.173 

.147 

.042 

.014 

.004 

.002 

39 

47.67 

14.  83 

5.  01 

6.  34 

5.  50 

9.31 

3.  49 

1.57 

1.91 

0.  83 

2.56 

0.  20 

0.  08 

100. 16 

2.  994 

Al.  I 

.795 

.145 

.031 

.088 

.138 

.166 

.056 

.017 

.032 

.001 

.001 

26° 

40 

46. 19 

12. 15 

3.  28 

7.  81 

11.65 

8. 53 

3.05 

2.02 

2.  63 

0. 18 

2.  01 

1.03 

100. 53 

2.  92 

A2.  II 

.770 

.119 

.021 

.108 

.291 

.151 

.049 

.021 

.025 

.007 

41 

48.  89 

13.  66 

3.  64 

1 

7.44 

8.  83 

8.  68 

3. 14 

1.20 

2.  59 

1.  76 

0.39 

100.  29 

2.  876 

A2.  II 

.815 

.134 

.022 

.103 

.221 

.  155 

.050 

.013 

.022 

.003 

42 

50.  22 

15.31 

4.87 

6.54 

7. 13 

8.  72 

3.  02 

1.68 

2.  78 

0.  54 

100.  91 

A3.  Ill 

.837 

.150 

.030 

.091 

.178 

.  155 

.048 

.018 

.004 

43 

49.  56 

16.  32 

3.69 

6.  97 

7.  50 

8:83 

2.91 

1.87 

2.  36 

100. 08 

2.88 

A3.  Ill 

.826 

.160 

.023 

.097 

.188 

.157 

.047 

.020 

44 

49.  97 

16.  38 

3.  62 

6.  76 

7.  50 

8.  95 

3.  22 

1.  55 

2. 18 

100. 19 

2.  84 

A3.  Ill 

.833 

.160 

.022 

.094 

.188 

.160 

.052 

.017 

45 

49.  55 

14.97 

4.  78 

6.  90 

7.36 

8.57 

3.47 

2.27 

2.  09 

99.  96 

2.  91 

A3.  Ill 

,826 

.146 

.030 

.096 

.184 

.153 

.056 

.024 

46 

49.  08 

13.  43 

6.  49 

5.  92 

9. 58 

8.  92 

3.  42 

1.00 

0.  32 

1.82 

0.  51 

100.  49 

A2.  II 

.818 

.132 

.040 

.082 

.240 

.159 

.  055 

.011 

.023 

.004 

47 

48.39 

12.  07 

8.23 

7.  82 

8.  48 

8.81 

2.  67 

0.  90 

1.81 

0.36 

0.25 

0. 97 

100.  76 

A2.  II 

.807 

.118 

.051 

.108 

.212 

.157 

.043 

.010 

.003 

.007 

48 

48.  41 

16.  24 

4.89 

6.41 

7.25 

9.  38 

3.  23 

2.  33 

2.11 

trace 

100.  25 

A3.  Ill 

.807 

.159 

.031 

.089 

.181 

.168 

.051 

.024 

— 

49 

54.  73 

14.  02 

2.  34 

4.  92 

7.40 

10.  20 

2.  98 

2.  67 

1.23 

trace 

trace 

100. 49 

A3.  Ill 

.912 

.137 

.014 

.068 

.185 

.182 

.048 

.028 

- — 

— 

50 

45.  75 

15.  85 

7.40 

5.82 

6.  90 

7.20 

3.  44 

1.33 

3.20 

1.68 

0.  55 

0.  31 

99.  61 

A2.II 

.  763 

.155 

.046 

.080 

.173 

.128 

.  055 

.014 

.021 

.004 

.004 

S  ALFEM  ANE - 0  A  M  PTONOSE. 


323 


ORDER  5.  PERFELIC.  GALLARE— Continued. 


SUBRANG  4.  DOSODIC.  CAMPTONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

or  12.2 
ab  23. 6 
an  26.4 

di 

by 

ol 

rat 

il 

16.7 

4.2 

3.4 
8.1 

3.5 

Tofteholmen, 
Christiania  Fjord, 
Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  83,  1899. 

Essexite. 

or  12. 2 
ab  22.0 
an  18.3 
ne  6.0 

di 

ol 

rat 

il 

16.3 

9.1 

3.5 

8.6 

Hvinden,  Gran, 
Norway. 

L.  Schmelck. 

W.  C.  Brogger, 

Eg.  KgM  III, 
p.  60,  1899. 

Camptonite. 

or  10. 0 
ab  17.8 
an  20. 3 

di 

hv 

ol 

nit 

il 

ap, 

24.0 

4.7 
3.1 

8.4 

4.8 

2.5 

Kj  dse-Aklungen, 
Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  51,  1899. 

Camptonite. 

or  9. 5 
ab  25. 7 
an  16. 1 

di 

hy 

ol 

mt 

il 

21.0 
15.  3 
3.5 
5.8 
2.3 

Halleborg, 

Sweden. 

A.  Merian. 

A.  Merian, 

N.  J.  B.  B., Ill, 
p.  289,  1885. 

Diabase. 

so3 

0.09 

Q  3.2 
or  7.8 
ab  22. 0 
an  25.3 

di 

hy 

mt 

il 

12.4 

16.2 

7.4 

0.6 

Hbringen,  Pfalz. 

K.  Kliiss. 

A.  Leppla, 

Jb.  Pr.G.  L.-A. ,  XIV, 
p.  150,  1894. 

Melaphyre. 

X 

so3 

Cl 

0.66 

0.05 

0.15 

or  9. 5 
ab  28. 3 
an  20.0 
ne  0. 6 

di 

ol 

mt 

il 

20.7 

5.5 

7.2 

4.8 

Hirzstein, 

Habichtswald, 

Nassau. 

O.  Fromm. 

O.  Fromm, 

Z.  D.  G.  G.,  XLIII, 
p.  70,  1891. 

Basalt. 

so3 

trace 

or  11.7 
ab  19.9 
an  13.6 
ne  3. 1 

di 

ol 

mt 

il 

ap 

17.7 

20.9 

4.9 

3.7 

2.3 

Breitenberg, 

Bl.  Altmorschen, 
Prussia. 

Not  stated. 

F.  Bevschlag, 

Erl.  G.  Kt.  Preuss., 

Bl.  Altmorschen, 
p.  24,  1891. 

Basalt. 

so3 

0.07 

or  7.2 
ab  26. 2 
an  19. 7 

di 

hy 

ol 

mt 

il 

ap 

16.5 

7.3 
12.1 

5.1 

3.4 
1.0 

Gangolfsberg, 

Rhongebirge. 

Haefcke. 

H.  Proescholdt, 

Jb.  Pr.  G.  L.-A., XIV, 
p.  12,  1894. 

Dolerite. 

Cl 

0. 10 

or  10.0 
ab  25.2 
an  23.4 

di 

hy 

ol 

mt 

ap 

13.1 

14.4 

3.8 

7.0 

1.3 

Eisenberg, 

Hesse. 

H.  Wolff. 

K.  Oebbeke, 

Jb.  Pr.  G.  L.-A.,  IX, 
p.  395,  1889. 

Basalt. 

Cl 

0. 07 

or  11.1 
ab  24. 6 
an  25.9 

di 

hy 

ol 

mt; 

14.6 

2.4 

13.8 

5.3 

Eisenberg, 

Hesse. 

H.  Wolff. 

K.  Oebbeke, 

Jb.  Pr.  G.  L.-A.,  IX, 
p.  394,  1889. 

Basalt. 

Cl 

0. 06 

or  9. 5 
ab  27.  2 
an  25. 3 

di 

hy 

ol 

mt 

15.8 

0.8 

14.4 

5.1 

Krotenkopf, 

Hesse. 

H.  Wolff. 

K.  Oebbeke, 

Jb.  Pr.  G.  L.-A.,  IX, 
p.  393,  1889. 

Basalt. 

• 

or  13.3 
ab  24. 1 
an  18.3 
ne  2. 8 

di 

ol 

mt 

19.5 

12.9 

7.0 

Hohebaum, 

Lottersberg, 

Hesse. 

H.  Wolff. 

K.  Oebbeke, 

Jb.  Pr.  G.  L.-A.,  IX, 
p.  397,  1889. 

Basalt. 

t 

or  6. 1 
ab  28. 8 
an  18. 3 

di 

hy 

Ol 

mt 

il 

ap 

17.6 

8.3 
7.0 

9.3 
3.5 

1.3 

Londorf,  Vogelsberg, 
Hesse. 

A .  Streng. 

A.  Streng, 

N.  J.,  1888,  II,  p.  211. 

Dolerite. 

Q  1.3 
or  5. 6 
ab  22. 5 
an  18. 1 

di 

hy 

mt 

ap 

15.7 
21.0 

11.8 
2.3 

Laubach,  Vogelsberg, 
Hesse. 

J.  M.  Ledroit. 

J.  M.  Ledroit, 

Ber.  Oberh.  Ges., 
XXIV,  p.  151, 1886. 

Basalt. 

or  13.3 
ab  19.4 
an  23. 3 
ne  4.0 

di 

ol 

mt 

19.3 

11.7 

7.2 

Der  Sabbel,  Hesse. 

Krauss. 

K.  Oebbeke, 

Jb.  Pr.  G.  L-A.,  IX, 
p.  410,  1889. 

Nephelite- 

basanite. 

or  15. 6 
ab  25. 2 
an  17.0 

di  27.0 
hy  12.2 
mt  3. 2 

Topla,  S.  Carinthia. 

H.  V.  Graber. 

H.  V.  Graber, 

Jb.  G.  R-A.  Wien., 
XLV1I,  p.  278, 1897. 

Basic  concretion 
in  granite. 

s 

0. 18 

or  7.8 
ab  28.8 
an  23.8 

di  6. 9 
hy  7. 7 
ol.  5. 6 
mt  10.  7 
il  3.3 
ap  1. 3 

Steinberg, 

Salzkammergut, 

Tyrol. 

C.  v.  John. 

C.  v.  John, 

Jl>.  G.  R-A.  Wien., 
XLIX,  p.  252,1899. 

Gabbro. 

Remarks. 


Not  fresh. 


Not  fresh. 


S03  for  S? 


SOg  for  S. 


Dried  at  100°. 


Near  kentallen- 
ose. 


324 


CHEMICAL  ANALYSES  <>E  IGNEOUS  HOCKS 


CLASS  III.  SALFEMANE — Continued. 
RANG  3.  ALKALICALCIC.  CAMPTOffASE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na2G 

K20 

h20+ 

h2o- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

51 

53.  04 

13. 06 

8.  19 

2.40 

5. 17 

10.  61 

3.  27 

2.06 

2.21 

0.  56 

0.16 

100.  73 

A3.  Ill 

.  884 

.128 

.051 

.033 

.129 

.189 

.057 

.  022 

.004 

.002 

52 

48.  64 

11.  68 

10.  57 

6.31 

6.  78 

10.  88 

2.90 

1.01 

1.02 

0.  39 

100. 18 

A3.  Ill 

.811 

.115 

.066 

.088 

.170 

.194 

.047 

.011 

.006 

53 

49.  97 

14.  22 

8. 14 

3.  79 

4. 14 

11.21 

2.  79 

2.39 

3.  50 

trace 

100. 15 

2.976 

A3.  Ill 

.833 

.139 

.051 

.053 

.104 

.200 

.045 

.025 

— 

54 

47.  73 

13. 33 

0.68 

14.99 

5.  63 

7.41 

2.  77 

1.  17 

0. 11 

4.  04 

0.61 

0.30 

99. 13 

B2.  Ill 

.  796 

.131 

.004 

.208 

.141 

.132 

.045 

.012 

.050 

.004 

.004 

55 

% 

47.  34 

14.  03 

0.  80 

17.20 

2.  24 

6.89 

2.  74 

2.  34 

0.  05 

4.17 

1.07 

0.  21 

99.  48 

A2.  II 

.789 

.137 

.005 

.239 

.  056 

.123 

.044 

.025 

.052 

.008 

.003 

56 

46.  30 

13.  44 

4.11 

12.  61 

4.  42 

11.88 

2. 13 

1.94 

3.02 

0.  59 

0.  22 

100.  92 

2.  401 

B2.  Ill 

.772 

.132 

.026 

.175 

.ill 

.212 

.034 

.020 

.004 

.003 

11° 

57 

51.  68 

13.  88 

6.  59 

4.  44 

7.  87 

10.  99 

2.  93 

0,  81 

0.  74 

99.  93 

A3.  Ill 

.861 

1.36 

.041 

.061 

.197 

.196 

.047 

.009 

58 

49.  80 

13.  76 

3.09 

11.97 

5.02 

10.  25 

3.  00 

1. 15 

trace 

.•  ' 

0.  95 

0.  22 

0. 10 

99.  31 

B2.  Ill 

.830 

.135 

.020 

.167 

.125 

.183 

.048 

.013 

.012 

.002 

.001 

59 

48.04 

14.  62 

9. 18 

11.  68 

2. 17 

7.  66 

4.  00 

1.  28 

none 

trace 

0.  45 

1.91 

100.  99 

2.  78 

B2.  Ill 

.801 

.143 

.  057 

.162 

.054 

.136 

.064 

.014 

.003 

.027 

60 

47.  61 

16.  09 

7.00 

10.  60 

3. 10 

8. 15 

2.  98 

1.15 

0.  70 

0.  39 

trace 

1.72 

99.  49 

2.  93 

B2.  Ill 

.794 

.157 

.044 

• 147 

.078 

.145 

.048 

.013 

.005 

— 

.024 

61 

45.  79 

15.  09 

5.34 

5.  58 

5.  92 

10.  21 

3.  67 

0.  90 

n.  d. 

3.  25 

0.  29 

0.  49 

99.  25 

Bl.  II 

.797 

.148 

.033 

.078 

.148 

.182 

.059 

.010 

.041 

.002 

.007 

62 

43.  70 

14.  98 

5.  38 

5.44 

7.  45 

9.  64 

3.02 

2.  38 

5.  27 

trace 

2. 15 

0.  66 

0.  06 

100.  24 

2.98 

Al.  I 

.728 

.147 

.034 

.075 

.186 

.172 

.048 

.  025 

.026 

.005 

.001 

63 

50.  22 

16.  20 

3. 13 

8.07 

7.  54 

8.  57 

3.  36 

1.  38 

0.  22 

1.95 

trace 

100.  64 

2.  79 

A2.  II 

.837 

.158 

.020 

.112 

.189 

.153 

.054 

.  015 

.024 

— 

64 

48.97 

16. 12 

1.90 

9.63 

7.  64 

8.  73 

2.  99 

1.21 

1.39 

1.62 

trace 

100.  20 

•2.89 

A2.  II 

.816 

.158 

.012 

.134 

1.91 

1.55 

.048 

.013 

.020 

— 

SALFEMANE — CAMPTONOSE. 


325 


ORDER  5.  PERFELIC.  GALL  A  RE— Continued. 


SUBRANG  4.  DOSODIC.  CAM PTONOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

1 

O 

3.5 

di 

27.4 

Punta  Luccia, 

or 

ah 

12.3 

29. 9 

mt 

hm 

7.  7 
2.9 

Yulcano, 

^Eolian  Islands. 

an 

13.6 

ap 

1.4 

Q 

1.4 

di 

30.4 

Pikonkorpi,  Kalvola, 

or 

ab 

6. 1 
24.6 

ny  o.  o 
mt  15. 3 

Finland. 

an 

15.6 

Q 

2.3 

di 

23.0 

Jalguba,  Olonez, 

or 

ab 

13.9 
23. 6 

Wo  2. 9 
mt  11.8 

Russia. 

an 

19.2 

Cl 

0.10 

or 

6.7 

di 

10.5 

Goroschki,  Arolhvnia, 

s 

0.26 

ab 

an 

23.6 

20.6 

hy  21. 1 
ol  6. 3 

Russia. 

mt 

0.9 

il 

/.  / 

ap 

1.4 

Cl 

0.10 

or 

13.9 

di 

6.8 

Goroschki,  Arolhynia, 

s 

0.30 

ab  23.1 
an  18. 9 

hv 

ol 

19.2 
5.  4 

Russia. 

mt 

1.2 

il 

7.9 

ap 

2. 6 

Cr203 

0.26 

or 

11.1 

di 

27.7 

Assab,  Alassowa, 

ab 

an 

14.7 

21.7 

ol 

mt 

13.3 
5. 8 

Abyssinia. 

ne 

1.7 

ap 

1.4 

Q 

or 

ab 

1.9 

5.0 

24.6 

di 

hy 

mt 

25. 3 

10.4 
9. 5 

Colesburg,  Cape 
Colony. 

an 

22. 2 

or 

7.2 

di 

25.4 

Kilauea,  Hawaii. 

ab 

25.2 

hv 

5.3 

an 

20.6 

ol 

9.2 

mt 

4.6 

il 

1.8 

or 

7.8 

di 

14.6 

Kilauea,  Hawaii. 

ab  33. 5 

hv 

7.  7 

an 

18.1 

oi 

3.1 

mt 

13.2 

ap 

1.0 

or 

7.2 

di 

11.5 

Kilauea,  Hawaii. 

ab  25. 2 

hy 

15.0 

an 

26. 7 

mt 

10.2 

il 

0.8 

S03 

2.64 

or 

5.6 

di 

22.5 

Kilauea,  Hawaii. 

CuO 

0. 18 

ab 

30.1 

ol 

3.5 

an 

22.0 

mt 

7.7 

ne 

0.4 

il 

6.3 

so3 

0.11 

<  r 

13.9 

di 

17.7 

Alas  River,  Timor 

CuO 

trace 

ab  14.7 
an  20. 6 

ol 

mt 

8.7 

7.9 

Island,  Dutch  East 

ne 

5.7 

il 

4.0 

Indies. 

ap 

1.7 

or 

8.3 

di 

14.4 

Cockburn  Island, 

ab 

an 

28.9 

24.7 

hy 

ol 

4.4 

12.1 

Antarctic. 

mt 

4.  6 

il 

3.7 

or 

7.2 

di 

13.3 

Cockburn  Island, 

ab 

an 

25. 2 
27.0 

hv 

ol 

5.0 
15. 5 

Antarctic. 

mt 

2.8 

il 

3.1 

Analyst. 

L.  Ricciardi. 

A.  AY.  Forsberg. 

Loewinson- 

Lessing. 

AV.  Tarassenko. 

AY.  Tarassenko. 


L.  Ricciardi. 


Gridmore  and 
Halberstadt. 


0.  Silvestri.  * 


0.  Silvestri. 


O.  Silvestri. 


A.  B.  Lyons. 


O.  Pufahl. 


G.  T.  Prior. 


G.  T.  Prior. 


Reference. 

Author’s  name. 

G.  Alercalli, 

Gior.  Alin.,  Ill,  p.  102, 
1892. 

Basalt. 

J.  J.  Sederholm, 

Finl.  G.  Und.,  Bl.  18, 
p.  49, 1890. 

LTralite- 

porphyrite. 

Loewinson-Lessing, 

T.  M.  P.M.,VI,  p.  294, 
1885. 

A^ariolite- 

aphanite. 

AY.  Tarassenko, 
cf.  N.  J.,  1899, 1, 
p.  463. 

Olivine-gabbro. 

A\T.  Tarassenko, 
cf.  N.  J.,  1899,1, 
p.  463. 

Olivine- 

pyroxene- 

syenite. 

L.  Ricciardi, 

B.S.  G.  It.,  V,  p.  58, 
1886. 

Basalt. 

E.  Cohen, 

N.  J.  B.  B.,  A', 
p.  233,  1887. 

Olivine- 

diabase. 

O.  Silvestri, 

B.  C.  G.  It., 

XIX,  p.  141,  1888. 

Basalt. 

O.  Silvestri, 

B.  C.  G.  It., 

XIX,  p.  175,  1888. 

Basalt. 

0.  Silvestri, 

B.  C.  G.  It., 

XIX,  p.  183,  1888. 

Basalt. 

A.  B.  Lvons, 

A.  J.  S.,  II,  p.  424, 
1896. 

Basalt  (Pele’s 
hair). 

A.  AVichmann, 

Gest.  v.  Timor,  . 
Leiden,  1887,  p.  128. 

Basalt. 

G.  T.  Prior, 

Min.  Mag.,  XII, 
p.  89,  1899. 

Basalt  glass. 

G.  T.  Prior, 

Min.  Alag.,  XII, 
p.  89,  1899. 

Basalt. 

Remarks. 


“  Basalt”  in  T. 
M.P.  M.,  XII, 
p. 107, 1891. 


Sum  low,  due  to 
H20+. 

“H20+”  in¬ 
crease. 


Sum  low,  due  to 
H20  +  . 

“H20+”  in¬ 
crease. 


Sum  high.  Sp. 
gr.  low.  Near 
kentallenose. 


Sum  low. 


Sum  high. 
MnO  high. 


MnO  high. 


Ignited  before 
analysis.  S03 
from  fumarole 
action. 


326 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  III.  SALFEMANE — Continued. 


RANG  3.  ALKALICALCIC.  CAMPTONASE. 


No. 

Si02 

Al-A 

FeA 

FeO 

MgO 

CaO 

Na20 

K20 

H,0  + 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

42.25 

16.  87 

5.24 

10.  72 

6.91 

3. 33 

3. 96 

0.  77 

5.58 

0.  43 

none 

2.  93 

0.  34 

0.  40 

trace? 

99.84 

Al.  I 

7. 04 

1.65 

.032 

.149 

.168 

.059 

.059 

.008 

.035 

.002 

.006 

— 

2 

50.  76 

12.  83 

4.  98 

10.  09 

6.  67 

9.  88 

3.52 

0.62 

0.  87 

100.  22 

A3.  Ill 

.846 

.126 

.031 

.140 

.167 

.177 

0.56 

.006 

3 

51.08 

15.  55 

7.71 

8.  55 

4.  48 

9.  00 

3.  29 

0. 53 

n.  d. 

0.  04 

100.  23 

A3.  Ill 

.851 

.151 

.049 

.319 

.112 

.160 

.053 

.006 

— 

4 

51.07 

14.  93 

6.44 

5.  98 

4.84 

7.  89 

5.04 

0. 16 

1.  73 

0.  24 

1.  65 

0.  19 

0.  22 

100.  38 

Al.  I 

.851 

.146 

.040 

.083 

.121 

.141 

.081 

.002 

.021 

.001 

.003 

5 

51.01 

11.89 

1.57 

6.  08 

8.87 

10.  36 

4. 17 

0. 15 

2.  09 

0.  24 

0.  98 

0. 17 

trace 

99.  35 

Bl.  II 

.850 

.117 

.010 

.085 

.222 

.185 

.068 

.002 

.012 

.001 

— 

6 

51.58 

14.  99 

2.04 

8.36 

6.  51 

8.  59 

3.  08 

0.31 

2.  67 

0.  34 

1.05 

0.  24 

trace 

99.  76 

A2.  II 

.860 

.147 

.013 

.117 

.163 

.153 

.050 

.003 

.013 

.002 

— 

7 

51.  28 

15.  05 

2.42 

8.  01 

6.07 

7.08 

4.  43 

0. 12 

2.  96 

0.  39 

1.33 

0. 13 

0.  25 

99.  62 

A2.  II 

.855 

,ii.; 

.015 

.ill 

.152 

.127 

.071 

.001 

.017 

.001 

.004 

8 

49.08 

14.  68 

1.95 

9.  63 

6.69 

10.  09 

4.  60 

0.  20 

1. 18 

0.  28 

1.72 

0.  23 

0. 15 

100.  48 

A2.  II 

.818 

.144 

.012 

.134 

.167 

.180 

.074 

.002 

.021 

.002 

.002 

9 

46. 11 

15.  97 

3.31 

9.16 

8.35 

8.49 

3.42 

0.  63 

1.99 

0.  54 

0.  47 

0.  65 

99.  09 

(99. 10) 

B2.  Ill 

.  769 

.156 

.021 

.127 

.209 

.151 

.055 

.006 

.007 

.003 

.  009 

10 

52.  73 

14.  35 

4.  37 

7.  60 

5. 13 

7.26 

3.  57 

0.82 

1.33 

0.22 

2.34 

0.  46 

trace 

trace 

100. 18 

2.872 

A2.  II 

.  .846 

.141 

.027 

.106 

.128 

.129 

.058 

.009 

.029 

.003 

— 

— 

15° 

11 

51.82 

11.66 

4.39 

5. 46 

7.  02 

12.  65 

3.38 

0.32 

1.25 

1.01 

0.  44 

100.  72 

3.  008 

A2.  II 

.864 

.114 

.027 

.076 

*175 

.226 

.  055 

.003 

.006 

12 

44.  64 

13. 97 

5.  69 

5.  75 

9.  78 

11.  50 

2.  99 

0.  43 

4.  22 

1.80 

100.  77 

A3.  Ill 

.744 

.137 

.035 

.080 

.245 

.205 

.048 

.004 

.022 

13 

53.  52 

13.  56 

4.93 

6.61 

7.  37 

7.39 

3.  22 

0.  68 

1.03 

1.  84 

100.  05 

A3.  Ill 

.892 

.133 

.031 

.092 

.184 

.132 

.051 

.007 

.023 

14 

41.32 

12.27 

15. 13 

7. 36 

3.  56 

10.  33 

4.  19 

0.85 

4.  38 

0.  20 

0.  35 

0.  97 

100.  91 

B2.  Ill 

.689 

.120 

.094 

.102 

.089 

.184 

.068 

.009 

.004 

,007 

15 

47.98 

12.52 

8.  07 

7.09 

7.41 

10.  56 

3.58 

0.  58 

trace 

1.95 

0.33 

100.  07 

2.  75 

A2.  II 

.800 

.123 

.050 

.099 

.185 

.188 

.058 

.006 

— 

.014 

.005 

20° 

16 

47.  53 

12.  35 

8.  32 

7. 15 

7.18 

11.54 

3.  60 

none 

0.  04 

1.98 

0.  28 

99.97 

3. 11 

A2.|II 

.792 

.121 

.052 

.100 

.180 

.206 

.058 

— 

.014 

.004 

20° 

17 

47.  51 

12.  53 

8.  08 

7. 05 

8.  40 

10. 05 

3.  85 

none 

0.  03 

2.05 

0.  28 

99.  83 

3.02 

A2.  II 

.792 

.123 

.050 

.098 

.210 

.179 

.062 

— 

— 

.015 

.004 

20° 

SALFEMANE - ORNOSE. 


327 


ORDER  5.  PERFELIC.  GALLARE—  Continued. 


SUBRANG  5.  RERSODIC.  ORNOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ZrOo 

s 

Cr»03 

V2O3 

NiO 

SrO 

none 

trace 

0.03 

0.07 

0.01 

none 

or  4.4 
ab  33. 5 
an  16.4 

C  3.5 

hy  2. 6 
oi  21.8 
mt  7.4 
il  5.4 

Mars  Hill,  Aroostook 
County,  Maine. 

W.  F.  Hille- 
brand. 

H.  E.  Gregorv, 

B.  U.  S.  G.  S.,  165, 
p.  179,  1900. 

Diabase  glass. 

or  3. 3 
ab  29. 3 
an  17.8 

di  25. 9 
hy  8. 5 
ol  7.3 
mt  7.2 

Little  John  Island, 
Portland,  Maine. 

E.  C.  E.  Lord. 

E.  C.  E.  Lord, 

A.  G.,  XXII, 
p.  341,  1898. 

Diabase- 

porphyry. 

Q  3.7 
or  3. 3 
ab  27. 8 
an  25. 9 

di  15. 5 
hy  12.8 
nit  11. 4 

The  Dalles, 

Columbia  River, 
Oregon. 

H.  W.  Muth- 
raann. 

Iv.  Oebbeke,  N.  J., 

1885,  I,  p.  226. 

Basalt. 

S03 

Cl 

F 

trace 

trace 

trace 

or  1. 1 
ab  42. 4 
an  17.5 

di  17. 7 
hy  6. 5 
mt  9. 3 
il  3.2 

Forbestown, 

Butte  County, 
California. 

H.  N.  Stokes. 

IL  W.  Turner, 
17A.R.U.  S.G.  8.,  I, 
p.  731,  1896. 

Uralite-diorite. 

FeS2 

CuS' 

Cr203 

1.73 

trace 

0.04 

or  1.1 
ab  34. 1 
an  13. 1 
ne  0.9 

di  30.7 
ol  11.4 
mt  2.3 
il  1.8 
pr  1. 7 

Grass  Valley, 

Nevada  County, 
California. 

H.  N.  Stokes. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S.,  II, 
p.  66,  1896. 

Diabase. 

Sum  low. 

Q  2.5 
or  1. 7 
ab  26. 2 
an  26. 1 

di  13.6 
hy  21. 7 
nit  3. 0 
il  2.0 

Mitchell  Canyon, 
Mount  Diablo, 
California. 

W.  H.  Mel¬ 
ville. 

W.  H.  Melville, 

B.  G.  S.  A.,  II, 
p.  412,  1891. 

Diabase. 

Not  fresh. 

NiO 

0. 10 

or  0. 6 
ab  37.2 
an  21. 1 

di  11.6 
hy  17.4 
ol  1.9 
mt  3.5 
il  2.0 

Sulphur  Bank, 
California. 

W.  H.  Mel¬ 
ville. 

G.  F.  Becker, 

M.  U.  S.  G.  S.,  XIII, 
p.  99,  1888. 

Pseudodiabase. 

or  1. 1 
ab  28.8 
an  18. 9 
■ne  5. 4 

di  25. 5 
ol  12.9 
mt  2.8 
il  3.2 

Mount  St.  Helena, 
California. 

W.  H.  Mel¬ 
ville. 

G.  F.  Becker, 

M.  U.  S.  G.  S.,  XIII, 
p.  98,  1888. 

Pseudodiabase. 

or  3.3 
ab  27. 8 
an  26. 4 
ne  0.6 

di  10.6 
ol  21.1 
mt  4. 1 
il  1.1 
ap  1. 1 

Orno,  Sweden. 

R.  Mauzelius. 

A.  Cederstrom, 

G.  F.  F.,  XV, 
p.  108,  1893. 

Ornoite. 

Sum  low. 

Cl 

F 

Cr,03 

trace 

trace 

trace 

Q  4.3 
or  5. 0 
ab  30.4 
an  20. 6 

di  10.1 
hy  14.6 
nit  6. 3 
il  4.5 
ap  1. 1 

Riidigheim,  Hanau, 
Rh.  Prussia. 

T.  Petersen. 

T.  Petersen,  cf.  N.  J., 
1894,  I,  p.  460. 

Basalt. 

S 

0.32 

Q  0.9 
or  1. 7 
ab  28. 8 
an  15.6 

di  37. 8 
hy  5.2 
mt  6. 3 
il  0.9 

Rauenthal, 

Taunus  Mountains, 
Hesse-Nassau. 

L.  Milch. 

L.  Milch, 

Z.  D.  G.  G.,  XLI, 
p.  430,  1889. 

Diabase. 

• 

or  2.2 
ab  18.3 
an  23.6 
ne  3. 7 

di  26.4 
ol  10. 6 
mt  8. 1 
il  3.4 

Albacher  Hof, 

Giessen, 

Ober  Hesse. 

A.  Streng." 

A.  Streng, 

Ber.  Oberh.  Ges., 
XXIX,  p.  99,  1893. 

Basalt. 

Q  6.9 
or  3.9 
ab  26.3 
an  20. 9 

di  12. 7 
hy  17.3 
mt  7. 2 
il  3.5 

Londorf,  Vogelsberg, 
Hesse. 

A.  Streng. 

A.  Streng,  N.  J., 

1888,  II,  p.  217. 

Basalt-obsidian. 

Nearly  in 

Order  4. 

or  5.0 
ab  26. 2 
an  12.0 
ne  5. 1 

di  21.3 
wo  2. 5 
mt  21. 8 
ap  2.3 

Gedern,  Vogelsberg, 
Hesse. 

J.  M.  Ledroit. 

J.  M.  Ledroit, 

Ber. Oberh. Ges.  XXIV, 
p.  152,  1886. 

Trachvdolerite. 

or  3.3 
ab  30.  4 
an  16.4 

di  18.5 
hy  12.1 
oi  3.0 
mt  11.6 
ap  4. 6 

Pianeti,  Rovereto,  Ty¬ 
rol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident,  XIX. 
p.  407,  1894. 

Basalt. 

Dried  before 
analysis. 
H20=1.56. 

ab  30.3 
an  17.5 

di  21.8 
hy  12.4 
ol  1.0 
mt  12.1 
ap  4.6 

Pradaglia,  Rovereto, 
Tyrol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp. Trident,  XIX, 
p. 409,  1894. 

Basalt. 

Dried  before 
analysis. 
H2O=0.95. 

ab  32. 5 
an  17. 0 

di  15. 1 
hy  14.1 

oi  4.4 
mt  11.6 
ap  4. 9 

Manzano,  Rovereto, 
Tyrol. 

P.  Giacomelli. 

f 

P.  Giacomelli, 

Soc.  Alp.  Trident,  XIX, 
p.  410,  1894. 

Basalt. 

Dried  before 
analysis. 
H,0=2.35. 

328 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 

RANG  3.  ALKALICALCIC.  CAMPTOXASE— Continued. 


No. 

Si02 

Al2Os 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

1 

o 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

» 

Sp.  gr. 

18 

46. 18 

13.45 

8. 18 

7.  01 

7.35 

12.  26 

3.05 

0.  57 

trace 

1.56 

0.31 

99.92 

3.  01 

A2.  II 

.770 

.132 

.051 

.097 

.184 

.219 

.049 

.006 

— 

.011 

.004 

20° 

19 

45.  76 

13.  50 

8.  43 

6.96 

7.38 

12. 19 

3.  09 

0.  55 

1.72 

0.  35 

99.93 

3.  05 

A2II 

.763 

.132 

.052 

.097 

.185 

.218 

.  .050 

.006 

.012 

.005 

20° 

20 

51.63 

12. 10 

8.  67 

3. 10 

9.40 

9.17 

3. 10 

0.30 

2. 47 

0.  26 

0-30 

101. 08 

Bl.  II 

.861 

.119 

.054 

.043 

.235 

.163 

' 

.050 

.003 

.031 

.002 

.004 

21 

49.  88 

13.  79 

9.65 

2.61 

6. 12 

9.  59 

3.30 

0.17 

3.  97 

0.  26 

0. 67 

100.  26 

Al.  I 

.831 

.135 

.060 

.036 

.153 

.171 

.053 

.002 

.050 

.002 

.010 

RANG  4.  DOCALCIC.  AUVERGNASE. 


1 

46.  86 

13.  96 

5.23 

4.  67 

7.  69 

9.  42 

1.85 

2.  02 

3. 43 

1.29 

2.19 

1.13 

0. 15 

trace 

0.  03 

99.  92 

Al.  I 

.781 

.137 

.032 

.  065 

.192 

.168 

.030 

.021 

.014 

.001 

— 

— 

2 

50.  03 

14.08 

2.  92 

6.11 

10.  73 

7.46 

1.46 

2.  64 

3.  70 

0.61 

0.  42 

0.  08 

0.  04 

100. 28 

Al.  I 

.834 

.138 

.018 

.085 

,268 

.133 

.023 

.027 

.008 

.003 

.001 

— 

3 

47.5 

15.6 

2.6 

7.1 

11.7 

9.8 

1.4 

1.5 

2.4 

99.7 

2.96 

A3.  Ill 

.792 

.153 

.016 

.099 

.293 

.175 

.022 

.016 

4 

53.  63 

14. 17 

1.46 

8.  07 

7.  05 

8.52 

1.80 

2.03 

2.01 

0. 93 

trace 

100. 29 

2.  789 

B2.  Ill 

.894 

.139 

.009 

.112 

.176 

.151 

.029 

.021 

.006. 

— 

6° 

RANG  4.  DOCALCIC.  AUVERGNASE  . 


1 

!  47.20 

1 

18.  64 

1.96 

6.  82 

8.  28 

11.52 

2.  91 

0.  28 

1.44 

0.  84 

99.  89 

2.  02 

A3.  Ill 

.787 

.182 

.013 

.094 

.207 

.205 

.047 

.003 

.010 

2 

46.29 

17. 16 

2.  57 

9.87 

7.  79 

12.  04 

2.21 

0. 16 

0.  51 

1.21 

99.81 

3.  06 

A3.  HI 

.772 

.168 

.016 

.138 

.195 

.215 

.035 

.002 

.015 

¥ 

3 

45.  66 

16.  26 

2.  97 

8.51 

10.  21 

12.  25 

1.  34 

0.  31 

0.  92 

1.39 

99.  82 

3.  04 

A3.  Ill 

.761 

.159 

.019 

.118 

.255 

.  219 

.021 

.003 

.017 

4 

'  44.79 

15. 18 

4. 13 

8.  21 

7.93 

14. 10 

2. 18 

0.  30 

1.33 

1.84 

99.  99 

3.  04 

A3.  Ill 

.  747 

.148 

.025 

.114 

.198 

.251 

.035 

.003 

.023 

5 

49.63 

14.  40 

2. 85 

8.  06 

7.25 

9.28 

2.  47 

0.  70 

1.47 

0.  27 

1.36 

1.68 

0.  25 

0. 17 

trace? 

100. 17 

Al.  I 

.827 

.141 

.018 

.112 

.181 

.166 

.040 

.008 

.021 

.002 

.002 

— 

6 

46.  59 

17.  55 

1.68 

10.  46 

7.  76 

10.  64 

3.  31 

0.  72 

0.  07 

0. 10 

1.41 

100.  29 

3.  047 

A3.  Ill 

.777 

.172 

.011 

.145 

..194 

.190 

.053 

.008 

.017 

11° 

7 

52.  40 

13.  55 

2.  73 

9.  79 

5.53 

10.  01 

2.  32 

0.  40 

1.05 

0.  62 

1.08 

0.12 

0. 26 

trace? 

99.  99 

Al.  I 

.873 

.133 

.017 

.137 

.138 

.178 

.037 

.004 

.014 

.001 

.004 

— 

S  ALFEM  A  N  E - A  U  VE  RG  NOS  E . 


329 


ORDER  5.  PERFELIC.  GALLARE— Continued. 
SUBRANG  5.  PERSODIC.  ORNOSE— Continued. 


Inclusive. 

Norm. 

or 

3.3 

di 

23.  G 

ab 

25.  7 

hv 

2.6 

an 

21.4 

oi 

7. 6 

mt 

11.8 

ap 

6 

or 

3.3 

di 

22.7 

ab 

26.2 

hv 

1.4 

an 

21.1 

ol 

8.7 

mt 

12.1 

ap 

4.0 

SO;) 

0.07 

Q 

4.7 

di 

21.0 

S 

0.03 

or 

1.7 

hy 

13.8 

Cr.,0:! 

trace 

ab 

26.2 

mt 

3.0 

Cub 

0. 48 

an 

18.3 

il 

4.8 

hm 

6. 4 

so3 

0.09 

Q 

6.6 

di 

16.9 

s 

0.02 

or 

1.1 

hm 

7.5 

Cr.,0:t 

trace 

ab 

27.8 

il 

5.5 

CuO 

0.14 

an 

22. 2 

hn 

9.7 

Pf 

1.9 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Valle  del  Parol,  Ro- 
vereto,  Tyrol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident,  XIX, 
p.  407,  1894. 

Basalt. 

Dried  before 
analysis. 

H,  0-1.27. 

Tierno,  Rovereto, 
Tyrol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident,  XIX, 
p.  405,  1894. 

Basalt. 

Dried  before 
analysis. 
HjO=1.34. 

Waianae,  Oahu,  Ha¬ 
waii. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.S.,  II, 
p.  424,  1896. 

Basalt. 

Sum  high. 
Dried  before 
analysis. 
H20  f  =0.33. 
H20—  =0.47. 

Koolan  Range,  Oahu, 
Hawaii. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S.,  II, 
p.  424,  1896. 

Basalt. 

Dried  before 
analysis. 
H20  +  =1.14. 
H20  — =1.84. 

SUBRANG  2.  SODIPOTASSIC. 


F 

trace 

Q  0.5 

di 

18.0 

Meriden,  Connecticut. 

H.  N.  Stokes. 

SrO 

trace 

or  11.  7 

hy 

13.3 

Li.,0 

trace 

ab  15. 7 

mt 

7.4 

an  23. 9 

il 

2.2 

Cr..Ofj 

trace 

or  15.0 

di 

10.2 

South  Boulder  Creek, 

L.  G.  Eakins. 

NiO 

trace 

ab  12.1 
an  24.5 

hy 

ol 

26. 5 
2.2 

Montana. 

mt 

4.2 

il 

1.2 

ap 

1.0 

Cr203 

0.1 

or  8. 9 

di 

13.5 

Ben  Damhain,  Loch 

J.  H.  Player. 

ab  11. 5 
an  32. 0 

hy 

ol 

11.9 

15.8 

Garabal,  Scotland. 

mt 

3.7 

SO, 

Cl 

0.62 

trace 

Q  5.6 
or  11.7 

di 

hv 

10.0 

27.3 

Radicofani,  Tuscany. 

L.  Ricciardi. 

ab  15.2 

mt 

2.1 

an  24.  7 

ap 

1.9 

B.  Iv.  Emerson, 

B.  G.  S.  A.,  VIII, 
p.  77,  1897. 


G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 
XVII,  p.  670,  1895. 


Dakyns  and  Teall, 

Q.  J.  G.  S.,  XLVIII, 
p.  115,  1892. 

G.  Mercalli, 

Att.  Soe.  Ital.,  Milano, 
XXX,  p.  371,  1887. 


Diabase  pitch - 
stone. 


Lamprophyre. 


Biotite-diorite. 


Andesite. 


Not  fresh. 

Near  kentallen- 
ose. 

Also  in  M.  U.  S. 
G.  S.,  XXIX, 
p.  437,  1898. 


One  decimal. 


SUBRANG  3.  PRESODIC.  AUVERGNOSE. 


or 

1.7 

di 

16.6 

ab 

21.5 

ol 

15.9 

an 

36.7 

mt 

3.0 

ne 

1.7 

il 

1.5 

or 

1.1 

di 

19.5 

• 

ab 

18.3 

hy 

2.4 

an 

36.4 

ol 

15.8 

mt 

3.7 

il 

2.2 

or 

1.7 

di 

19.3 

ab 

11.0 

hy 

11.2 

an 

37.5 

ol 

11.2 

mt 

4.4 

il 

2.6 

or 

1.7 

di 

31.8 

ab 

12.6 

ol 

9.5 

an 

30.6 

mt 

5.8 

ne 

3.1 

il 

3.6 

SO, 

none 

Q 

1.5 

di 

16.6 

Cl 

0. 07 

or 

4.4 

hy 

19.8 

F 

trace 

ab 

21.0 

mt 

4.2 

FeS. 

0.22 

an 

25.9 

il 

3.2 

NiO' 

0.04 

or 

4.4 

di 

18.3 

ab 

16.8 

ol 

18.8 

an 

30.9 

mt 

2.6 

ne 

6.0 

il 

2.6 

Fe^ 

0. 13 

Q 

6.7 

di 

19.7 

NiO 

trace 

or 

2.2 

hy 

18.1 

SrO 

none 

ab 

19.4 

mt 

3.9 

Li.,0 

none 

an 

25.6 

il 

2. 2 

Green  Point,  Monhe- 
gan  Island,  Maine. 


Monhegan  Island, 
Maine. 


Monhegan  Island, 
Maine. 


Seal  Ledge,  Monhe¬ 
gan  Island,  Maine. 


Mount  Ascutney,  Ver¬ 
mont. 


Salem  Neck,  Essex 
County,  Massachu¬ 
setts. 

Pine  Hill,  South  Brit¬ 
ain,  Connecticut. 


E.  C.  E.  Lord. 


E.  C.  E.  Lord. 


E.  C.  E.  Lord. 


E.  C.  E.  Lord. 


W.  F.  Hille- 
brand. 


H.  S.  Washing¬ 
ton. 


W.  F.  Hille- 
brand. 


E.  C.  E.  Lord, 

A.  G.,  XXVI, 
p.  340,  1900. 

E.  C.  E.  Lord, 

A.  G.,  XXV, 
p.  346,  1900. 

E.  C.  E.  Lord, 

A.  G.,  XXVI, 
p.  346,  1900. 

E.  C.  E.  Lord, 

A.  G.,  XXVI, 
p.  340,  1900. 

R.  A.  Daly, 

B.  U.  S.  G.  S.,  148, 
p.  70,  1897. 

H.  S.  Washington, 

J.  G.,  VII, 
p.  285,  1899. 

W.  H.  Hobbs, 

B.  U.  S.  G.  S.,  168, 
p.  35,  1900. 


Gabbro-diorite. 


Beerbachite. 


Malchite. 


H  ornblende- 
gabbro. 


Diabase. 


Camptonite. 


Olivine- basalt. 


Sp.  gr.  3.0 
Near  h 
6  specime 

6  specime 


5  specimens. 


330 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 
RANG  -1.  DOCALCIC.  AUVERGNASE— Continued. 


No. 

SiO., 

!  alo3 

Fe203 

FeO 

MgO 

CaO 

Na.20 

k2o 

H20+ 

H20- 

C02 

Ti02 

r-A 

MnO 

BaO 

Sum 

Sp.  gr. 

8 

46.  85 

,  18.00 

6. 16 

8.  76 

8.43 

10. 17 

2. 19 

0. 09 

0.  30 

100.95 

3.  097 

B3.  IV 

.781 

.176 

.039 

.  122 

.211 

.182 

.035 

.001 

9 

44.97 

15.38 

2.  29 

12.  39 

10.  89 

7.  50 

3.02 

0.  56 

0.  65 

0. 10 

0.  23 

1.18 

0. 14 

0.22 

trace? 

99.  64 

Al.  I 

.  750 

.150 

.014 

.172 

.272 

.134 

.048 

.006 

.015 

.001 

.003 

— 

10 

51.  36 

16.25 

2.14 

8.  24 

7.  97 

10.  27 

1.54 

1.06 

1.33 

0.  09 

100. 28 

A3.  Ill 

.856 

.159 

.013 

.114 

.199 

.184 

.025 

.011 

.001 

11 

51.  68 

15.87 

1.46 

8.  43 

7.84 

11.08 

1.86 

0.  34 

0. 15 

0.16 

0.72 

0. 12 

0. 15 

99.  86 

A2.  II 

.861 

.  155 

.009 

.117 

.196 

.198 

.030 

.003 

.009 

.001 

.002 

12 

48.02 

17.  50 

1.80 

7.  83 

,10.  21 

13. 16 

1.48 

trace 

0.  79 

100.79 

B3.  IV 

.800 

.171 

.011 

.108 

.  255 

.235 

.024 

— - 

13 

46.  85 

19.  72 

3,2 

7.99 

7.  75 

13.10 

1.56 

0.  09 

0.  56 

100.  84 

B3.  IV 

.781 

.193 

.020 

.111 

.194 

.234 

.025 

.001 

14 

46.  68 

17. 12 

2. 18 

7.61 

10.  34 

13.  46 

1.75 

trace 

0.  88 

.trace 

trace 

100. 02 

3.  069 

A3.  Ill 

.778 

.168 

0. 14 

.106 

.259 

.240 

.028 

— 

15 

51.31 

13.  64 
% 

0.  52 

8.49 

12.  73 

12.  41 

1.40 

0.  32 

n.  d. 

trace 

trace 

trace 

100.  82 

B3.  IV 

.855 

.134 

.003 

.118 

.318 

.221 

.022 

.003 

— 

— 

— 

• 

16 

50.  88 

13.17 

1.  11 

9.  66 

13.05 

10.  19 

1.17 

0.31 

0. 14 

trace 

99.  67 

A3.  Ill 

.SIS 

.129 

.007 

.135 

.326 

.182 

.019 

.003 

_ 

17 

46.91 

15.85 

2.  86 

9.  95 

7.01 

9.  62 

2.65 

0.  69 

1.62 

0.  24 

2.  03 

0.  26 

0.  22 

trace? 

99.  98 

Al.  I 

.782 

.  155 

.018 

.139 

.  175 

.171 

.043 

.007 

.025 

.002 

.003 

— - 

18 

47.90 

15.60 

3.69 

8.41 

8. 11 

9.  99 

2.  05 

0.  23 

2.  34 

0. 15 

0.  38 

0.  82 

0. 13 

' 

0. 17 

0.  05 

100. 12 

Al.  I 

.798 

.153 

.023 

.117 

.203 

.178 

.033 

.002 

.010 

.001 

.002 

— 

19 

51.46 

14.35 

3.  90 

5.28 

9.  54 

9.  08 

2.  92 

0.  24 

I 

3.30 

i 

0.  20 

100. 27 

A3.  Ill 

.858 

.140 

.024 

.074 

.239 

.161 

.047 

,  .  003 

20 

48.  23 

18.  26 

1.26 

6. 10 

10.  84 

9.  39 

1.34 

0.  73 

2.  00 

0.26 

0.  43 

1.00 

0.07 

99.91 

A2.  II 

.804 

.179 

.008 

.085 

.271 

.168 

.021 

.007 

.012 

.001 

21 

44.29 

17.  46 

3.  82 

10.  35 

7.  03 

8.  68 

2. 19 

0.  71 

J 

4.11  | 

0.  21 

1.40 

0.  20 

trace 

none 

100.  45 

A2.  II 

.738  | 

.171 

.024 

.144 

.176 

.155 

.035 

.008 

.017 

.001  1 

— 

— 

22 

48.  35 

15.  40 

4.04 

4.  63 

11.61 

10.  38 

1.87 

0.  35 

3.60 

0.  08 

100.  31 

A3.  Ill 

.806 

.151 

.025 

.064 

.290 

.185 

.030 

.004 

23 

47.96 

16.  85 

4.33 

4. 17 

9. 15 

13.25 

1.25 

0.30 

2.  89 

0.  08 

100.  23 

A3.  Ill 

.799 

.  165 

.027 

.058 

.229 

.236 

.020  ; 

.003 

- 

24 

49.65 

16.36 

4.  39 

7. 19 

8.  00 

9. 18 

2.49 

1. 17 

2.  39 

• 

100. 82 

B3.  IV 

.828 

.160 

.027 

.100 

.200 

.164 

.040 

.013 

25 

40.  07 

17.21  i 

0.46 

12. 18 

3.60 

9.  66 

2.96 

trace 

1 . 55 

2.  70 

trace 

99.89 

A3.  Ill 

.818 

.169 

.003 

.170 

.090 

.172 

.048 

— 

— 

SALFEMANE - AUVERGNOSE. 


331 


ORDER  5.  PERFELIC.  GALL  ARE— Continued. 


SUBRANG  3.  PRESODIC.  AUVERGNOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  0. 6 
ab  18.3 
an  38. 9 

di  9. 5 
hv  16.6 
ol  7.8 
mt  9.0 

Wilmurt  Lake,  Ham¬ 
ilton  County,  New 
York. 

C.  H.  Smyth,  jr. 

C.  H.  Smyth,  jr., 

A.  J.  S.,  XL VIII, 
p.  61,  1894. 

Gabbro. 

Sum  high. 

s 

Cr203 

vs03 

NiO 

SrO 

LloO 

0.06 

trace 

0. 02 

0. 02 

trace 

trace 

or  3.3 
ab  21.0 
an  26.  7 
ne  2.3 

di  8.7 
ol  30.6 
mt  3. 2 
il  2.3 

Elizabethtown,  Essex 
County,  New  York. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

B.  U.  S.  G.  S.,  168, 
p.  37,  1900. 

Diabasic  norite. 

NiO 

0.03 

Q  2.0 
or  6. 1 
ab  13.1 
an  34.2 

di  13.9 
hy  26.5 
mt  2.0 

Watchung  Mountain, 
Orange,  NewJersey. 

L.  G.  Eakins. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  150, 
p.  255,  1898. 

Basalt. 

Q  2.9 
or  1. 7 
ab  15. 7 
an  33.9 

di  17.2 
hy  24.3 
mt  2. 1 
il  1.4 

Rocky  Ridge,  Mary¬ 
land. 

E.  A.  Schneider. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  90,  1897. 

Diabase. 

Not.described. 

ab  12. 6 
an  40. 9 

di  20.0 
hv  12.0 
ol  11.9 
mt  2. 6 

Baltimore  area, 
Maryland. 

L.  McCay. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  28,' 
p.  39,  1886. 

Gabbro-diorite. 

19  specimens. 

or  0. 6 
ab  13.1 
an  43. 9 

di  17. 3 
hy  11. 4 
ol  8. 4 
mt  4. 6 

Baltimore  area, 
Maryland. 

L.  McCay. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  28, 
p.  39,  1886. 

Gabbro. 

23  specimens. 

ab  14.  7 
an  38. 9 

di  22.6 
hv  0.9 
ol  18.9 
mt  3.2 

Windsor  road,  Balti¬ 
more,  Maryland. 

L.  McCay 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  28, 

.  p.  37,  1886. 

Gabbro-diorite. 

or  1. 7 
ab  11.5 
an  30.  3 

di  25. 1 
hv  22.3 
of  9. 0 
mt  0. 7 

The  Twins, 

Culpeper  County, 
Virginia. 

W.  G.  Brown. 

Campbell  &  Brown, 

B.  G.  S.  A.,  II, 
p.  346,  1891. 

Hypersthene- 
di  abase. 

Sum  high. 

or  1.7 
ab  10. 0 
an  29.  7 

di  16.9 
hv  35. 4 
Ol  4. 3 
mt  1.6 

The  Twins, 

Culpeper  County, 
Virginia. 

W.  G.  Brown. 

Campbell  &  Brown, 

B.  G.  S.  A.,  II, 
p.  346,  1891. 

Olivine- 

hypersthene- 

diabase. 

. 

ZrO, 

S 

Cr„03 

VaO, 

NiO 

SrO 

none 

none 

0. 01 

0. 03 

0.03 
trace  ? 

or  3.9 
ab  22.5 
an  29. 2 

di  15. 1 
hy  8. 1 
ol  10. 7 
mt  4. 2 
il  3.8 

Hump  Mountain, 
Mitchell  County, 
North  Carolina. 

W.  F.  Hille- 
brand. 

A.  Keith, 

P>.  U.  S.  G.  S.,  168, 
p.  52,  1900. 

Diorite. 

Cr003 
■  NiO 

trace 

0. 10 

Q  0.3 
or  1. 1 
ab  17. 3 
an  32. 8 

di  13.5 
hy  24.8 
mt  5. 3 
il  1. 5 

Sec.  13,  T.  47  N.,  R.46 
W.,  Penokee-Gego- 
bicReg.,  Michigan. 

T.  M.  Chatard. 

C.  R.  Van  Hise, 

M.  U.  S.  G.  S.,  XIX, 
p.  357,  1892. 

Diabase. 

Q  1.0 
or  1.7 
ab  24.6 
an  25.  3 

di  15.7 
hy  22.8 
mt  5.6 

Sturgeon  Falls, 

Menominee  Valley, 
Michigan. 

R.  B.  Riggs. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  62, 
p.  76,  1890. 

Gabbro. 

Dried  at  105°. 
Altered. 

or  3.9 
ab  11. 0 
an  42. 0 

di  3.9 
hy  29.9 
ol  2.9 
mt  1. 9 
il  1.8 

Crystal  Falls,  Michi¬ 
gan. 

G.  Steiger. 

J.  M.  Clements, 

J.  G.,  VI,  p.  382, 

1898.  Corrected. 

Bronzite- 

norite. 

Also  in  M.  U.  S. 
G.S.,XXXVI, 
p.  245,  1899. 

or  4.4 
ab  18. 3 
an  35.  6 

di  6.1 
hy  10.0 
ol  13. 3 
mt  5.6 
il  2.6 

Mansfield,  Crystal 
Falls  District, 
Michigan. 

G.  Steiger. 

C.  R.  Van  Hise, 

B.  U.  S.  G.  S.,  168, 
p.  68,  1900. 

Metadolerite. 

Not  fresh. 

or  2. 2 
ab  15. 7 
an  32. 5 

di  15. 0 
hv  21.1 
ol  4.3 
mt  5. 8 

Upper  Quinnesec 
Falls,  Menominee 
River,  Wisconsin. 

R.  B.  Riggs. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  62, 
p.  104,  1890. 

Greenstone. 

( Diabase. ) 

Not  fresh. 

Dried  at  105°. 

Q  1.4 
or  1.7 
ab  10. 5 
an  39.5 

di  21.1 
hy  16.9 
mt  6. 2 

Lower  Quinnesec 
Falls,  Menominee 
River,  Wisconsin. 

R.  B.  Riggs. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  62, 
p.  89,  1890. 

Gabbro- 

diorite. 

Dried  at  105°. 

or  7. 2 
ab  21.0 
an  29. 7 

di  12.8 
hy  16.1 
ol  5.3 
mt  6. 3 

Frogrock  Lake, 
Minnesota. 

Dodge  and  Si- 
dener. 

M.  E.  Wadsworth, 

B.  G.  Nh.  S.  Minn., 
p.  126,  1887. 

Porphyrite. 

ab  25.2 
an  33.6 

di  12.2 
hy  19.7 
ol  3.6 
mt  0.7 

Bashitanaqueb  Lake, 
Cook  County,  Min¬ 
nesota. 

A.  D.  Meeds. 

N.  H.  Winchell, 

21  A.  R.  G.  Nh.  S. 
Minn.,  p.  151,  1893. 

Gabbro. 

332 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 


RANG  4.  DOCALCIC.  AUVERGNASE — Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

H20+ 

H,0- 

C02 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

26 

49.  56 

17.81 

2.  76 

9.48 

5.  93 

9.  70 

2.87 

none 

0.  50 

0.48 

0.  57 

0.  06 

99.  82 

2.  967 

A2.  II 

.826 

.  175 

.017 

.133 

.148 

.173 

.047 

— 

.006 

.004 

.  001 

27 

45.  66 

16.  44 

0.  66 

13.  90 

11.57 

7.23 

2. 13 

0.41 

0.  83 

0.07 

0.92 

0. 05 

trace 

100. 03 

Al.  I 

.761 

.161 

.004 

.193 

.289 

.129 

.034 

.004 

.011 

— 

— 

28 

43.  50 

18.  06 

7.52 

7.64 

3.  47 

13.  39 

2.00 

1.30 

1.22 

2. 10 

100.  20 

A3.  Ill 

.  725 

.177 

.047 

.106 

.087 

.239 

.032 

.014 

.026 

29 

42.  03 

13.  60 

7. 55 

6.  65 

6.  41 

14. 15 

1.83 

0.97 

1.08 

3.  70 

0.57 

99.  23 

A2.  II 

.701 

.133 

.048 

.093 

.160 

.252 

.030 

.010 

.046 

.004 

30 

45.  71 

10.  80 

4.  43 

9.  35 

13.  75 

10.  48 

1.58 

0.  85 

0.97 

1.83 

0.11 

0.17 

trace 

100. 13 

A2.  II 

.762 

.106 

.028 

.130 

.344 

.187 

.025 

.009 

.  023 

.001 

.002 

— 

31 

47. 17 

17.  85 

7.42 

1. 18 

6.  54 

10.  12 

2.  94 

0.56 

0.  65 

2. 13 

0.  20 

none 

100. 55 

A2.  II 

.786 

.175 

.046 

.015 

.  166 

.180 

.047 

.006 

.027 

.001 

. 

— 

32 

47.  54 

16.  73 

6.  69 

6.  67 

6.  38 

8-  74 

2.81 

1.  10 

0.  36 

2.  76 

0.51 

0. 19 

0.  03 

100. 51 

A2.  II 

.792 

.164 

•  .042 

.093 

.160 

.156 

.045 

.012 

.034 

.004 

.003 

— 

33 

51.32 

15.  28 

0.  47 

8.59 

7.  25 

11.  58 

2.  92 

0.  22 

0.  95 

0.  06 

1.23 

0.  25 

0. 16 

none 

100.  28 

A2.  II 

.  855 

.150 

.003 

.120 

.181 

.207 

.047 

.002 

.015 

.002 

.002 

— 

34 

50.  89 

16.  76 

3.86 

4.  69 

8.  49 

11.  72 

2.61 

0.  32 

0.41 

0.  79 

0.  09 

0.  13 

trace 

100. 76 

A2.  II 

.848 

.164 

.024 

.065 

.212 

.209 

.042 

.003 

.010 

.001 

.002 

— 

35 

47.93 

18.51 

.  2'07 

7.  25 

9.  03 

11.14 

2.28 

0.  24 

0.  76 

none 

0.  73 

0. 11 

0.  20 

100. 25 

A2.  11 

.799 

.181 

.013 

.101 

.226 

.199 

.037 

.003 

— 

.009 

.001 

.003 

• 

36 

44.  77 

17.  82 

5.  05 

6.  95 

8.  22 

10.  36 

2. 13 

0.  92 

2.  64 

0.53 

0.  72 

trace 

100.11 

A2.  II 

.  746 

.175 

.032 

.097 

.206 

.185 

.034 

.010 

.007 

.005 

— 

37 

48.  26 

14.  83 

3.27 

5.  97 

8.  77 

11.38 

1.57 

1.13 

3.  37 

0. 10 

1.24 

0.51 

0.  25 

0. 15 

0.  05 

100. 85 

Al.  I 

.804 

.  145 

.020 

.083 

.219 

.203 

.026 

.011 

.006 

.002 

.002 

— 

38 

52.  06 

14.  34 

2. 11 

7.  74 

9.  26 

8.05 

1.74 

0.  73 

2.90 

0.59 

. 

0.  47 

0. 13 

trace 

100. 12 

A.  II 

.868 

.140 

.013 

.107 

.232 

.144 

.028 

.008 

.006 

.001 

— 

39 

49.  36 

16.35 

2.  93 

8.  55 

7.  06 

10.  08 

2.  67 

0.  82 

0.  65 

0.  22 

0. 98 

0. 30 

0.  19 

0.04 

100.  25 

Al.  I 

.823 

.160 

.018 

.119 

.177 

.180 

.043 

.009 

.012 

.002 

.003 

— 

40 

52. 18 

15.44 

4.  26 

5. 10 

8.89 

8.  57 

2. 11 

0.  55 

2. 16 

trace 

trt  c  * 

99.  26 

2.  848 

B3.  IV 

.870 

.151 

.027 

.071 

.  222 

.153 

.034 

.006 

— 

— 

41 

52.  78 

13.  66 

2.  40 

8.  64 

7.  95 

9.52 

2.  34 

0.  20 

1.89 

none 

0.23 

none 

0. 11 

99.  72 

A2.  II 

.880 

.134 

.015 

.120 

.199 

.169 

.037 

.002 

.003 

— 

.002 

42 

52. 16 

14.  72 

4.  11 

7. 18 

9.  44 

8.  44 

1.49 

0.  32 

1.06 

none 

0.  42 

0.  06 

0. 48 

100. 17 

A2.  II 

.869 

.144 

.026 

.100 

.236 

.150 

.024 

.003 

.005 

_ 

.007 

SALFEMANE - AUVERGNOSE. 


333 


ORDER  5.  PERFELIC.  GALEA  RE— Continued. 


SUBRANG  3.  PRESODIC.  AUVERGNOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ab  24.6 
an  35.6 

di  6.4 
by  26.1 
mt  3. 9 
il  0.9 
ap  1. 7. 

Sec.  26,  T.  64  N.,R.  8 
W.,  Minnesota. 

W  JL  Melville. 

W.  S.  Bavley, 

J.  G.,  Ill, 
p.  10,  1895. 

Gabbro. 

Cr«03 

NiO 

trace 

0.16 

or  2. 2 
ab  17. 8 
an  34.2 

di  1.4 
hy  10.1 
ol  30.3 
mt  0. 9 
il  2. 6 

Birch  Lake, 

Minnesota. 

H.  N.  Stokes. 

W.  S.  Bayley, 

J.  G  ,  I, 
p.  712,  1893. 

Olivine-gabbro. 

or  7.8 
ab  12. 1 
an  37.  0 
ne  2. 6 

di  24.1 
ol  1.1 
mt  10. 9 
il  4.0 

Magnet  Cove, 
Arkansas. 

W.  A.  Noyes. 

J.  F.  Williams, 

A.R.  Ark.  G.S.,  1890, 

•  II,  p.  295,  1891. 

Amphibole- 

monchiquite. 

so3 

NaCl 

FeS2 

0. 08 

0.03 

0.56 

or  5. 6 
ab  12.6 
an  25.9 
ne  1.7 

di  31.8 
ol  0.9 
mt  11.1 
il  7.0 
ap  1. 2 

Fourche  Mountain, 
Little  Rock, 
Arkansas. 

Noyes  and 
Brackett. 

J.  F.  Williams, 

A.R.  Ark.  G.S.,  1890, 
11,  p.  108,  1891. 

. 

Fourchite. 

Sum  low. 

or  5. 0 
ab  13.1 
an  20. 0 

di  26.2 
hy  6. 3 
ol  18. 3 
mt  6. 5 
il  3.5 

Conical  Peak, 

Crazy  Mountains, 
Montana. 

L.  G.  Eakins. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  146,  1897. 

Hornblende- 

picrite. 

Nearly  in  do- 
femane. 

S03 

Li.,0 

Fe’ 

0.51 

0.02 

3.26 

or  3.3 
ab  24. 6 
an  33. 9 

di  10.4 
hy  11.8 
il  2.3 
hm  7. 4 
tn  2. 0 
ir  3.3 

Prospect  Peak, 
Yellowstone 
National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.  148, 
p.  135,  1897. 

Basalt. 

Iron  from  mor¬ 
tar?  Near  No. 
16,  hessose. 

Q  1.3 
or  6. 7 
ab  23.  6 
an  29. 7 

di  8.2 
hy  14.3 
mt  9. 7 
il  5.2 
ap  1.2 

Near  Grant’s  Moun¬ 
tain, Taylor  Region, 
New  Mexico. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  185,  1897. 

Basalt. 

SrO 

LioO 

trace 

trace 

or  1. 1 
ab  24. 6 
an  28. 1 

di  23.9 
hy  13.3 
ol  4.9 
mt  0.7 
il  2.3 

Hornitos, 

Mariposa  County, 
California. 

W.  F.  Hille- 
brand. 

, 

H.  W.  Turner, 

J.  G.,  Ill, 
p.  403,  1895. 

Diabase. 

Also  in  17  A.  R. 
U.  S.  G.  S.,  I, 
p.  694,  1896. 

Q  0.4 
or  1.7 
ab  22.0 
an  33. 1 

di  20.0 
hy  15.9 
mt  5. 6 
il  1.5 

Inskip  Crater, 

Lassen  Peak, 
California. 

Hillebrandand 

Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  200,  1897. 

Basalt. 

Dried  at  110°. 

or  1. 7 
ab  19.4 
an  39. 2 

di  13.2 
hy  8. 3 
ol  13.2 
mt  3. 0 
il  1.4 

Paine’s  Creek,  Lassen 
Peak,  California. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  200,  1897. 

Basalt. 

or  5. 6 
ab  17. 8 
an  36.4 

di  8.8 
hy  6. 8 
ol  12. 7 
mt  7.4 
il  1.1 
ap  1. 6 

Kosk  Creek,  Shasta 
County,  California. 

L.  G.  Eakins. 

J.  S.  Diller, 

A.  G.,  XIX, 
p.  255,  1897. 

Hornblende- 

basalt. 

-  • 

SrO 

LioO 

trace 

trace 

or  6.1 
ab  13.6 
an  30. 0 

di  21.2 
hv  18.2 
ol  0. 7 
mt  4. 6 
il  0.9 

Brow'n’ s  Valley, 

Yuba  County, 
California. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

B.  U.  S.  G.  S.,  148, 
p.  228,  1897. 

Diabase- 

porphyrite. 

Not  fresh. 

Q  5.0 
or  4. 4 
ab  14.  7 
an  28. 9 

di  9.1 
hy  30.5 
mt  3. 0 
il  1.1 

Mitchell  Canyon, 
Mount  Diablo, 
California. 

W.  H.  Melville. 

W.  H.  Melville, 

B.  G.  S.  A.,  II, 
p.  412,  1891. 

Diabase. 

NiO 

SrO 

LioO 

0. 05 

none 

none 

or  5. 0 
ab  22.5 
an  30. 0 

di  16.3 
hy  12.1 
ol  6.9 
mt  4.2 
il  1.8 

Santa  Maria  Basin, 
Arizona. 

W.  F.  Hille- 
brand. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  148, 
p.  187,  1897. 

Mica-basalt. 

Not  described. 

Q  6.0 
or  3.3 
ab  17.8 
an  30. 9 

di  9.4 
hy  23. 5 
mt  6. 4 

Cerro  San  Miguel, 
Puebla,  Mexico. 

A.  Rohrig. 

A.  Hoppe,  in  Felix  and 
Lenk,  Btr.  G.  Mex.,  II, 
p.  213,  1899. 

Hypersthene- 

basalt. 

Sum  low. 

S 

none 

Q  4.7 
or  1. 1 
ab  19.4 
an  26. 4 

di  16.8 
hy  25.7 
mt  3. 5 

Urinambo,  Barama 
River,  British 
Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  N.  W.  Dist. ,  II, 
p.  11,  1898. 

Epidiorite 

Dried  at  110°. 

FeS., 

0.29 

Q  8.0 
or  1. 7 
ab  12.6 
an  32. 5 

di  7.5 
hy  28.2 
mt  6. 0 
il  0.8 

Upper  Barama  River, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  N.  W.  Dist. ,  II, 
p.  9,  1898. 

Diorite 

Dried  at  110°. 

334 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 


RANG  4.  DOCALCIC.  AUVERGNASE— Continued. 


No. 

SiO, 

A1A 

Fe2Oa 

FeO 

MgO 

CaO 

Na/> 

k2o 

h2o+ 

H20— 

C02 

Ti02 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

43 

49.46 

16.  77 

1.98 

6.  57 

9.  33 

11.  17 

1.55 

0.  04 

2.  02 

0.  27 

0.  79 

none 

trace 

99.  95 

A 2.  II 

.824 

.164 

.013 

.092 

.233 

.200 

.025 

— 

.010 

— 

— 

44 

47.  28 

13.  24 

4.44 

10.  50 

5.  94 

11.04 

2.  62 

0.31 

2.  00 

1.48 

0. 40 

99.25 

B2.  Ill 

.  788 

.130 

.027 

.146 

.149 

.197 

.042 

.003 

.018 

.006 

45 

45.  96 

12.  68 

7.  63 

7.94 

8.25 

8.  36 

1.88 

0.  98 

4. 10 

2.  43 

0.  61 

100. 78 

2.  96 

A3.  Ill 

.766 

.124 

.048 

.110 

.206 

.149 

.030 

.010 

.009 

46 

47.29 

16.  93 

1.58 

2.  67 

21.01 

8.  56 

1.  17 

0.39 

0.  29 

99.  89 

• 

A3.  Ill 

.  788 

.166 

.010 

.038 

.525 

.152 

.019 

.004 

47 

44.90 

17.  25 

1.71 

4.  30 

20.41 

10.  89 

1.22 

0.  56 

0.33 

101.57 

C3.  V 

.  747 

.169 

.011 

.060 

.510 

.  194 

.019 

.006 

; 

48 

42.  68 

18.  36 

5.27 

7. 02 

12.  89 

10.05 

1.69 

0.51 

1.25 

99.  80 

A3.  Ill 

.711 

.180 

.033 

.097 

.322 

.179 

.027 

.005 

49 

47.00 

15.  20 

5.69 

6.59 

8.  76 

12.  60 

1.45 

0.  66 

0.  30 

2.30 

trace 

0.26 

100.  81 

B2.  Ill 

.783 

.149 

.035 

.092 

.219 

.225 

.023 

.007 

.029 

— 

.004 

50 

50.  05 

16.  80 

0.  84 

11.06 

10.97 

6.  46 

1.75 

1. 13 

0. 10 

0.  54 

99.  70 

A3.  Ill 

.834 

.165 

.005 

.154 

.274 

.115 

.028 

.012 

.008 

51 

46.  52 

16. 11 

11.  76 

6.  31 

5.45 

9.  79 

2.  20 

1.83 

100. 38 

A3.  Ill 

.  775 

.158 

.067 

.088 

.136 

.175 

.035 

.020 

52 

47.  72 

18.  49 

0.  68 

4.  54 

12.88 

11.59 

2.  81 

0.41 

1.30 

none 

0.  24 

0.  04 

trace 

j 

100.  76 

2.916 

A2.  II 

.795 

.181 

.004 

.063 

.322 

.207 

.045 

.004 

.003 

— 

— 

14° 

53 

47.  57 

17.  52 

0.  80 

8.  22 

10.  77 

9.  53 

1.69 

1. 10 

2.  66 

99.  86 

2.  88 

A3.  Ill 

.793 

.172 

.005 

.114 

.269 

.169 

.027 

.011 

54 

49.  31 

16.  93 

4.  02 

5.90 

9.  36 

9.  57 

2.41 

0.47 

2.  35 

100. 32 

A3.  Ill 

.822 

.166 

.025 

.082 

.234 

.171 

.039 

.005 

55 

48.  87 

16.  24 

5.30 

5.21 

7.  65 

8.92 

3.  03 

0. 96 

2.  20 

0.  82 

0.  31 

99.51 

A2.  II 

.815 

.159 

.033 

.072 

.191 

.159 

.048 

.010 

.010 

.002 

56 

B3.  IV 

48.  90 

.  815 

18.  08 

.177 

2.  52 

.016 

3.  20 

.044 

11.43 

.286 

14. 10 

.251 

1.53 

.024 

0.25 

.003 

0.  88 

trace 

100.  89 

57 

48.  65 

15. 95 

2.  49 

6.  32 

11.53 

11.66 

1.96 

none 

1.67 

100.  23 

A3.  Ill 

.811 

.156 

.015 

.088 

.288 

.208 

.032 

— 

58 

46. 15 

13.  57 

3.  61 

8. 15 

12.  63 

15. 15 

1.29 

trace 

n.  d. 

100. 55 

A3.  Ill 

.769 

.133 

.022 

.113 

.316 

.271 

.021 

— 

59 

45.  45 

17.  40 

4.43 

7.  34 

li.  06 

11.95 

1.  76 

trace 

0.  36 

99.  75 

A3.  Ill 

.  758 

.170 

.027 

.102 

.279 

.213 

.028 

— 

60 

43.  75 

18.  02 

7. 50 

5.31 

10.  68 

12.  40 

1.46 

0.  51 

1.21 

100.  84 

B3.  IV 

.729 

.176 

.047 

.074 

.  267 

.  221 

.023 

.005 

61 

46.  16 

13.  86 

5.  26 

1.81 

11.60 

15.  74 

1.05 

0.  30 

3.40 

trace 

99. 18 

3.  00 

B3.  IV 

.769 

.136 

.033 

.025 

.290 

.281 

.017 

003 

— 

15° 

SA LFEMANE - AUY ERG NOSE . 


335 


ORDER  5.  PERFELIC.  GALLARE — Continued. 


SUBRANG  3.  PRESODIC.  AUVERGNOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

s 

NiO 

CoO 

none 

trace 

trace 

Q  2.0 
ab  13. 1 
an  3S.  6 

di 

hy 

mt 

il 

13.6 

26.0 

3.0 

1.5 

Barima  District, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.G.  N.W.  Di-t.,  II, 
p.  6,  1898. 

Diabase. 

or  1. 7 
ab  22. 0 
an  23.6 

di 

o? 

mt 

il 

25. 5 

12.6 

2.3 

6. 3 
2.8 

Cape  Flora,  Franz 
Josef  Land. 

J.  J.  H.  Teall.? 

J.  J.  H.  Teall, 

Q.  J.  G.  S.,  LIV, 
p.  647,  1898. 

Basalt. 

Q  1.5 
or  5. 6 
ab  15.7 
an  23.4 

di 

hy 

mt 

14.9 

21.5 

11.1 

Binniaro  Firth, 
Orkney  Islands. 

J.  S.  Flett. 

J.  S.  Flett, 

Tr.  R.  Soc.  Edinb., 
XXXIX,  p.  887, 1900. 

Camptonite. 

or  2.2 
ab  10.0 
an  39. 8 

di 

hy 

ol 

mt 

2.0 
15. 1 
28.3 
2.3 

Etang  cle  Lherz, 
Pyrenees,  France. 

A.  Pisani. 

A.  Lacroix, 

C.  R.  VIII,  Cong.  <  i. 
lilt.,  p.  833,  1901. 

Ariegite. 

or  3.3 
ab  3. 1 
an  40. 0 
ne  3. 7 

di 

ol 

mt 

11.0 

37.4 

2.6 

Tuc  d’Ess,  Pyrenees, 
France. 

A.  Pisani. 

A.  Lacroix, 

C.  R.  VIII,  Co  ig.  G. 
Int.,  p.  833,  KOI. 

Ariegite. 

or  2.8 
ab  12. 1 
an  41. 1 
ne  1. 1 

di 

ol 

mt 

6.9 
26.  S 
7.7 

Escourget,  Pyrenees, 
France. 

A.  Pisani. 

\ 

A.  Lacroix, 

C.  R.  VIII,  Cong.  G. 
Int.,  p.  833,  1901. 

Ariegite. 

Q  0.7 
or  3. 9 
ab  12. 1 
an  33. 1 

di 

hy 

mt 

il 

23.9 

14.2 

8.1 

4.5 

Solvsberget,  Gran, 
Norway. 

G.  Sarnstrom. 

W.  C.  Brogger, 

Q.  J.  G.  S.,  L, 
p.  19,  1894. 

Essexite. 

or  6. 7 
ab  14. 7 
an  32.0 
C  1.0 

hy 

of 

mt 

33. 7 
9.8 
1.2 

Elestad,  West 
Blekinge,  Sweden. 

H.  Santesson. 

J.  C.  Moberg, 

Afh.  Sv.  G.,  Und., 

No.  158,  p.  27,  1896. 

Diabase. 

Q  0.6 
or  11.1 
ab  18.3 
an  28.6 

di  15. 9 
hy  8. 9 
mt  15. 5 

Ivantua,  Eura, 
Finland. 

Not  stated. 

H.  Gylling, 

Finl.G.,  Und.,  Bl.  12, 
p.  55,  1888. 

Diabase. 

Cl 

SrO 

Li20 

trace 

trace 

trace 

or  2. 2 
ab  14. 7 
an  36.7 
ne  4. 8 

di 

ol 

mt 

16.7 

22.9 

0.9 

Hohenberg,  n.  Buhne, 
W  estphalia. 

P.  Jannasch. 

F.  Rinne, 

Sb.  Berl.  Ak.,  1891, 
p.  980. 

Olivine-gabbro. 

or  6. 1 
ab  14.1 
an  37.3 

di 

hy 

ol 

mt 

7.9 
12.1 
IS.  5 
1.2 

Reiffenberg, 

Schorbach, 

Hesse. 

H.  WTolff. 

II.  Wolff, 
cf.  N.  J.,  1891,  II, 
p.  279. 

Nephelite- 

basanite. 

or  2.8 
ab  20. 4 
an  33.9 

di 

hy 

ol 

mt 

11.0 

20.0 

4.3 

5.8 

St.  Sigismund,  Tyrol. 

Not  stated. 

H.  v.  Foullon, 

Jb.  G.  R-A.  Wien, 
XXXVI,  p.  771,  1886. 

Porphyrite. 

t 

or  5.6 
ab  25. 2 
an  28. 1 

di 

hy 

ol 

mt 

il 

12.9 
14.2 
2.0 
7.  7 
1.5 

Fitz  am  Berg, 
Salzkammergut, 
Tyrol. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien, 
XLIX,  p.  254,  1899. 

Diabase. 

s 

trace 

or  1.7 
ab  12. 6 
an  41. 7 

di 

hy 

ol 

mt 

22.1 

9.1 

9.0 

3.7 

Mount  Collon,  Arolla, 
Switzerland. 

A.  Brunet. 

A.  Brun, 
cf.  N.  J.  1897,  I, 
p.  475. 

Gabbro. 

NiO 

trace 

ab  16.8 
an  34.5 

di 

hy 

ol 

mt 

18.7 

13.7 
11.2 

3.5 

Gaggio  Montano, 
Bologna,  Italy. 

P.  E.  V.  de 
Regny. 

P.  E.  V.  de  Regnv, 
cf.  N.  J.,  1900,  II, 
p.  397. 

Gabbro. 

ab  7.9 
an  31. 1 
ne  1. 7 

di 

ol 

mt 

36.3 

18.3 
5.1 

Deneschkin  Kamen, 
Ural  Mountains, 
Russia. 

Krekmeyerom 
and  Kulta- 
cheff. 

Loewinson-Lessing, 

G.  Sk.  Jushno-Saos., 
Dorpat,  1900,  p.  166. 

Hvpersthene- 

gabbro. 

ab  14.  7 
an  39.5 

di 

hy 

ol 

mt 

16.0 

4.3 
18.6 

6.3 

Supreya,  Ural 
Mountains,  Russia. 

Kultacheff. 

Loewinson-Lessing, 

G.  Sk.  Jus-hno-Saos., 
Dorpat,  1900,  p.  167. 

Pyroxene- 
granulite 
(gabbro ) . 

or  2. 8 
ab  10. 5 
an  41. 1 

di 

hy 

ol 

mt 

16.6 

5.3 

11.7 

10.9 

Between  Solwa  and 
Supreya,  Ural 
Mountains,  Russia. 

Kultacheff. 

Loewinson-Lessing, 

G.  Sk.  Jushno-Saos, 
Dorpat,  1900,  p.  166. 

Microdiorite. 

or  1. 7 
ab  8.9 
an  32. 2 

di 

hy 

ol 

mt 

35. 7 
4.9 
5.3 
7.1 

Villia,  n. 

Laurion,  Greece. 

R.  Lepsius. 

R.  Lepsius, 

G.  v.  Attika,  Berlin, 
1893,  p.  98. 

Gabbro. 

Remarks. 


Dried  at  110°. 
“Altered.” 


Sum  low. 


Not  fresh. 


Near  kedabek- 
ase. 


Sum  high.  Near 
kedabekase. 


Incomplete  i  n 
Z.  K.,  XVI, 
p.  27,  1890. 

Cof  norm  isTi02 
and  P205.  “Ap¬ 
atite  abun¬ 
dant.” 


Inclusion  in  ba¬ 
salt. 


Alkalies? 


Sum  low.  Npt 
fresh. 


336 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 


RANG  4.  DOCALCIC.  AUVERGNASE— Continued. 


No. 

Si02 

A1203 

Fe2Os 

FeO 

MgO 

CaO 

Na20 

K2G 

h2o+  h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

62 

45.  30 

13.  40 

7.25 

6.  26 

11.53 

10.34 

2. 17 

0.  23 

0. 18 

2.  50 

0.  39 

0.  34 

99.  89 

A2.  II 

.755 

.131 

.045 

.  087 

.288 

.184 

.037 

.002 

.031 

.003 

.005 

63 

44.  06 

15. 10 

5.  23 

7. 93 

9.  84 

12.  56 

2.20 

0.93 

0.  30 

1.80 

0. 53 

0.  36 

100.  84 

A 2.  II 

.734 

.148 

.032 

.110 

.245 

.224 

.035 

.010 

.023 

.004 

.  005 

64 

02.  IV 

42.  72 

.712 

16.  46 

.161 

5.  74 

.035 

5. 53 

.076 

6.  27 

.157 

11.20 

.200 

2.  94 

.047 

0.  66 

.007 

3.  23 

3. 10 

.039 

0.91 

.006 

0.  26 

.004 

101.02 

(99.02) 

65 

42.  08 

16.  04 

5.  93 

8.  75 

6.  95 

12.  66 

1.88 

0.93 

2.  76 

2.26 

0.  34 

0.  32 

100.  90 

B2.  Ill 

.701 

.  157 

.037 

.122 

.174 

.226 

.030 

.010 

.028 

.002 

.005 

66 

51.  75 

14.  67 

6.  27 

4.  73 

5. 19 

11.94 

2.  70 

0.  58 

1.86 

99.69 

A3.  Ill 

.863 

.144 

.039 

.065 

.130 

.213 

.043 

.006 

• 

67 

50. 17 

15.  83 

9.32 

4.  87 

7.  21 

9.  34 

3.  00 

0.  71 

0.  74 

101. 19 

B3.  IV 

.836 

.  155 

.058 

.068 

.180 

.167 

.048 

.008 

• 

68 

49.  50 

14.  89 

5.93 

6.  42 

6.  73 

12.  45 

1.68 

0.  56 

2.  84 

101.  00 

B3.  IV 

.825 

.146 

.037 

.089 

.168 

.222 

.027 

.006 

69 

50.  76 

14.  75 

2.  89 

9.  85 

6.54 

11.05 

2.  70 

0.  88 

n.  d. 

0.  26 

0.  41 

100.  09 

• 

A3.  Ill 

.846 

.145 

.018 

.138 

.164 

.197 

.043 

.009 

.002 

.006 

70 

49.  20 

14.90 

4.51 

12.  75 

3.  90 

9.  20 

1.96 

0.  95 

0. 10 

1.  72 

0.  42 

0.  28 

99.  89 

A2.  II 

.820 

.146 

.028 

.177 

.098 

.164 

.032 

.010 

.022 

.003 

.004 

71 

48.  82 

15.  22 

5.  72 

9.65 

4.  55 

10.  40 

2. 10 

0.  90 

none 

1.  16 

trace 

0.  67 

99. 19 

3.01 

B2.  Ill 

.814 

.149 

.035 

.135 

.114 

.185 

.034 

.010 

.014 

.010 

RANG  5.  PERCALCIC.  KEDABEKASE. 


1 

48.02 

20.01 

.  1.  13 

7.29 

10.  05 

11.42 

0.  51 

0.  05 

0.57 

0. 10 

0.  25 

0.  23 

trace 

0.  18 

none 

99.  98 

Al.  I 

.800 

.196 

.007 

.101 

.251 

.203 

• 

.008 

.001 

.003 

— 

.003 

— 

2 

46.  85 

20.  02 

2.30 

4.  60 

10. 16 

13.84 

1.32 

trace 

0.  88 

0.  30 

trace 

trace 

100.  27 

2.  996 

A3.  Ill 

.781 

.196 

.014 

.064 

.254 

.247 

.021 

— 

.004 

— 

— 

3 

44.  76 

18.  82 

2..  19 

4.  73 

11.32 

14.  58 

0.  89 

0. 11 

2.36 

0. 17 

0.13 

none 

0.  15 

100. 29 

Al.  I 

.  746 

.184 

.014 

.  065 

.283 

.260 

.014 

.001 

$ 

.002 

— ' 

.002 

4 

47.49 

15.81 

1.07 

4.  50 

10.  39 

15.  53 

1. 16 

trace 

1.83 

1.20 

trace 

0.41 

99.  45 

A3.  Ill 

.792 

.  155 

.007 

.062 

.260 

.277 

.019 

— 

— 

.006 

5 

50.  76 

16.  83 

4.16 

4.45 

10.  09 

11.30 

0.97 

0.  06 

0. 14 

none 

0.  46 

none 

0.  69 

99.91 

A2.  II 

.846 

.165 

.026 

.062 

.252 

.201 

.016 

.001 

.006 

— 

.010 

6 

47.  09 

16.  99 

1.62 

3.60 

19.  92 

9.  20 

0.  50 

0.  25 

0.  83 

100.  00 

A3.  Ill 

.785 

.167 

.010 

.050 

.498 

.164 

.008 

.003 

7 

44.  38 

17.60 

1.42 

3.91 

15. 14 

16.  03 

0.  78 

0. 15 

0.  59 

100.  00 

A3.  Ill 

.740 

.172 

.009 

.054 

.379 

.286 

.013 

.002 

SALFEMANE— KEDEBAKASE. 


337 


ORDER  5.  PERFELIC.  GALLARE— Continued. 

SUBRANG  3.  PRESODIC.  AUVERGNOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  1. 1 
ab  19.4 
an  25.6 

di  18.1 
hv  12.8 
Ol  6. 3 
mt  10.4 
il  4.8 
ap  1. 0 

Punta  Delgada, 

San  Miguel, 

Azores. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien, 
XLVI,  p.  291,  1896. 

Basalt. 

or  5. 6 
ab  13. 1 
an  28. 6 
ne  2.8 

di  21.7 
ol  15.6 
mt  7. 4 
il  3. 5 
ap  1. 3 

Punta  Delgada, 

San  Miguel, 

Azores. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien, 
XLVI,  p.  291,  1896. 

Basalt. 

or  3. 9 
ab  23. 1 
an  29. 7 
ne  0. 9 

di  15.7 
ol  6.1 
mt  8. 1 
il  6.0 
ap  2. 0 

Mindello,  San 

Vicente,  Cape 

Verde  Islands. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien, 
XLVI,  p.  286,  1896. 

Limburgite. 

Sum  uncertain. 

or  5. 6 
ab  8.9 
an  32.5 
ne  3. 7 

di  24.6 
ol  9. 5 
mt  8. 6 
il  4.3 

Mindello,  San 

Vicente,  Cape 

Verde  Islands. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien, 
XLVI,  p.  285,  1896. 

Basalt. 

Q  6.3 
or  3. 3 
ab  22. 5 
an  26. 4 

di  26.2 
hy  4. 0 
mt  9.0 

North  Kimberley, 
Griqualand  West, 
South  Africa. 

Dodge. 

. 

E.  Cohen, 

N.  J.  B.  B.,  V, 
p.  233,  1887. 

Olivine- 

diabase. 

Q  2.6 
or  4. 4 
ab  35.2 
an  27.5 

di  15. 0 
hv  12.2 
mt  13.5 

Pfandstall, 

Colesberg, 

Cape  Colony. 

Wetzig. 

E.  Cohen, 

N.  J.  B.  B.,  V, 
p.  245,  1887. 

Diabase- 

porphyrite. 

Sum  high. 

Q  4.3 
or  3. 3 
ab  14.1 
an  31.4 

di  24.4 
hy  12.0 
mt  8. 6 

Philipolis,  Orange 
River  Colony. 

Liepmann. 

E.  Cohen, 

N.  J.  B.  B.,  V, 
p.  244,  1887. 

Diabase- 

porphyrite. 

Sum  high. 

or  5. 0 
ab  22. 5 
an  25. 9 

di  24.0 
hy  12.3 
ol  6. 8 
mt  4. 2 

Kilauea,  Hawaii. 

A.  H.  Phillips. 

A.  H.  Phillips, 

A.  J.  S.,  XL VII, 
p.  473,  1894. 

Basalt. 

Pele’s  hair. 

Q  4.4 
or  6.6 
ab  16.8 
an  28. 9 

di  13. 9 
hy  19.8 
mt  6. 5 
il  3.4 

Lava  of  May,  1883, 
Kilauea,  Hawaii. 

0.  Silvestri. 

O.  Silvestri, 

B.  C.  G.  It.,  XIX, 
p.  135,  1888. 

Basalt. 

Q  3.6 
or  5. 6 
ab  17.8 
an  29.2 

di  18.6 
hy  13.5 
mt  8. 1 
il  2.2 

Kilauea,  Hawaii. 

O.  Silvestri. 

0.  Silvestri, 

B.  C.  G.  It.,  XIX, 
p.  185,  1888. 

Basalt. 

Sum  lovr. 

SUBRANG.  NOT  NEEDED. 


ZrOo 

Fe3-j 

Cr„0, 

V203 

NiO 

SrO 

none 

0.11 

0.03 

0.02 

0.01  ■ 
none 

Q  0.7 
or  0. 5 
ab  4. 2 
an  52.0 

di  3.7 
hv  35.7 
mt  1.6 

McKinsev’s  Mill, 

Cecil  County, 
Maryland. 

W.  F.  Hille- 
brand. 

A.  G.  Leonard, 

B.  U.  S.  G.  S.  168, 
p.  45,  1900. 

Norite. 

Not  described. 

ab  11.0 
an  48.7 

di  16. 0 
hy  9.3 
ol  11.5 
mt  3.2 

Pikesville,  Baltimore 
County, 

Maryland. 

L.  McCay. 

G.  H.  Williams, 

B.  U.  S.  G.  S.  28, 
p.  37,  1886. 

Gabbro-diorite. 

■f 

Cr203 

Li20 

0.08 

trace 

or  0. 6 
ab  7. 3 
an  47.0 

di  20.1 
hy  3.1 
ol  16. 0 
mt  3.2 

Wetheredville, 
Baltimore  County, 
Maryland. 

W.  F.  Hille- 
hrand. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  673,  1895. 

Hypersthene- 

gabbro. 

NiO 

0.06  . 

ab  10.0 
an  37.8 

di  31.8 
hy  7. 8 
ol  7. 0 
mt  1. 6 

Bagley  Canyon, 

Mount  Diablo, 
California. 

W.H.  Melville. 

IV.  H.  Melville, 

B.  G.  S.  A.,  II, 
p.  404,  1891. 

Gabbro. 

Near  auver- 
gnose. 

S 

CoO 

none 

trace 

Q  6.7 
or  0.6 
ab  8.4 
an  41.1 

di  11.8 
hy  23.8 
nit  6. 0 
il  0.9 

Barima  District, 

British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  N.  W.  District, 
II,  p.  6,  1898. 

Diabase. 

Dried  at  11.0°. 

or  1. 7 
ab  4.2 
an  43.4 

di  1.8 
hy  25.8 
Ol  20.0 
mt  2. 3 

Etang  de  Lherz, 
Pyrenees,  France. 

A.  Pisani. 

A.  Lacroix, 

C.  R.  VIII.  Cong.  G. 
Int.,  p.  833,  1901. 

Ariegite. 

an  43.6 
lc  0.8 
ne  3. 7 

di  23.8 
ol  23.3 
am  1.  9 
mt  2.1 

Etang  de  Lherz, 
Pyrenees,  France. 

A.  Pisani. 

A.  Lacroix, 

C.  R.  VIII.  Cong.  G. 
Int.,  p.  832,  1901. 

Ariegite. 

14128— 

No.  14- 

03 

22 

338 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 


RANG  4.  I’ERCALCIC.  KEDABEKASE— Continued. 


No. 

Si02 

A1,03 

Fe,Os 

FeO 

MgO 

CaO 

Na20 

k2o 

H20+ 

H20- 

C02 

Ti02 

pa 

MnO 

BaO 

Sum 

Sp.  gr. 

8 

42.  32 

15.41 

2.  69 

5.  96 

19.25 

11.97 

1.04 

0.  24 

1.23 

100. 11 

A3.  Ill 

.  705 

.  151 

.017 

.083 

.481 

.214 

.016 

.002 

9 

38.  95 

19.80 

3.01 

4.54 

16.  42 

12.  05 

0.  89 

0.  37 

3.36 

99.  39 

A3.  Ill 

.649 

.  195 

.019 

.063 

.411 

.215 

.014 

.004 

10 

44.  64 

18.54 

6.  63 

4.  65 

2.  52 

22.17 

0.  80 

0.  05 

0.  18 

0.  09 

100.  27 

A3.  Ill 

.744 

.182 

.041 

.065 

.063 

.396 

.013 

.001 

11 

44.  11 

19.  38 

5. 17 

5.44 

2.  90 

21.98 

0.  50 

0.13 

0.  26 

99.87 

A3.  Ill 

.  735 

.190 

.032 

.075 

.073 

.393 

.008 

.001 

CLASS  III.  SALFEMANE. 


RANG  1.  PERALKALIC.  WYOMINGASE. 


1 

Al.  I 

50.  23 

.837 

11.22 

.110 

3.34 

.021 

1.84 

.026 

7.09 

.177 

5.99 

.107 

1.37 

.022 

9.81 

.104 

1.  72 

0.  93 

2.27 

.028 

1.  89 

.013 

0. 05 

.001 

1.23 

.008 

100.  62 
0.  22 

2.  779 

13° 

100.40 

RANG 

1.  PERALKALIC.  WYOMINGASE. 

1 

48.  90 

7.  85 

11.46 

13.  32 

0.  38 

1.95 

7.40 

3.  23 

1.80 

1.11 

99.  39 

B2.  Ill 

.815 

.077 

.072 

.185 

.010 

.035 

.119 

.034 

.016 

2 

50.  00 

9.  87 

3.  46 

5. 01 

11.92 

8.  31 

2.  41 

5.02 

1.16 

0. 17 

0.  31 

0.  73 

0.  81 

trace 

0.  32 

100. 01 

Al.  I 

.833 

.096 

.022 

.070 

.298 

.148 

.039 

.053 

,009 

.005 

.002 

RANG  1.  PERALKALIC.  AVYOMINGASE. 


1 

50.  70 

13.  72 

6.07 

7.  64 

0.  04 

0.86 

12.  32 

1.91 

4.84 

1.42 

100.  56 

. 

A2.  II 

.845 

.134 

.03£ 

.106 

.001 

.015 

.199 

.020 

.020 

2 

40.  03 

10.  88 

12.  24 

5. 12 

4. 13 

11.  74 

3.  67 

3.  33 

2.  22 

1. 15 

5.46 

0.  76 

trace 

100. 73 

A2.  II 

.667 

.107 

.077 

.071 

.103 

.210 

.059 

.035 

.068 

.005 

— 

3 

48.  39 

11.64 

4.09 

3. 57 

12.  55 

7.  64 

4. 14 

3.  24 

2.  56 

0.  28 

none 

0.  73 

0.  45 

trace 

0.  32 

99.  90 

Al.  I 

.807 

.114 

.025 

.049 

.314 

.136 

.067 

.034 

.009 

.003 

— 

.002 

4 

45.  72 

14.25 

4.10 

5.  56 

2.67 

10.  41 

5.52 

3.  62 

4.  80 

3.  25 

0.  20 

100. 10 

2.  766 

A2.  II 

.762 

.140 

.026 

.077 

.  067 

.186 

.089 

.038 

.041 

.001 

SALFEMANE - SR  3  OF  WYOMINGASE. 


339 


ORDER  5.  PERFELIC.  GALLARE— Continued. 


SUBRANG.  NOT  NEEDED— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  1.1  di  17.8 

Etang  de  Lherz, 

A.  Pisani. 

A.  Lacroix, 

Ariegite. 

Near  auver- 

an  37. 0  ol  33. 6 
lie  4.5  mt  3.9 

Pyrenees,  France. 

C.  R.  VIII.  Cong.  G. 

gnose. 

Int.,  p.  833,  1901. 

an  49. 2  ol  33. 2 

Etang  de  Lherz, 

A.  Pisani. 

A.  Lacroix, 

Ariegite. 

ic  u.  4  am  6. 9 
kp  0. 9  mt  4. 4 

Pyrenees,  France. 

C.  R.  VIII.  Cong.  G. 

ne  4.0 

Int.,  p.  833,  1901. 

Q  0.5  di  19.5 

Keclabek, 

A.  Kupffer. 

E.  C.  Federoff, 

Kedabekite. 

or  0. 6  wo  1<>.  4 
ab  6.8  mt  9.5 

Elizabethpol, 

Ann.  Inst.  Agr.  Mosc., 

an  46.7 

Russia. 

VII,  1901. 

or  0. 6  di  26. 4 

Kedabek, 

A.  Kupffer. 

E.  C.  Federoff, 

Kedabekite. 

ab  2. 1  wo  10. 3 
an  52. 5  mt  7. 4 

Elizabethpol, 

Ann.  Inst.  Agr.  Mosc., 

ne  1.1 

Russia. 

VII,  1901. 

ORDER  6. 

LENDOFELIC. 

PORTUGARE. 

SUBRANG  1 

.  PERPOTASSIC. 

WYOMINGOSE. 

S03  0. 74 

or  44. 5  ac  7. 4 

Boar’s  Tusk, 

W.  F.  Hille- 

W.  Cross, 

Wvomingite. 

Cl  0. 03 

F  0. 50 

lc  10.5  di  13.9 
ne  1.7  ol  7.9 

Leucite  Hills, 

brand. 

A.  J.  S.,  IV, 

Cr„03  0. 10 

il  4.1 

W  yoming. 

p.  130,  1897. 

SrO  0. 24 

hm  0.8 

Ce.,03  0. 03 

ap  4.5 

SUBRANG  3.  SODIPOTASSIC. 


Zr02 

1.96 

or  18.9  ac  33.3 

Kangerdluarsuk, 

C.  Detlefsen. 

H.  Rosenbusch, 

Schlieren  in 

Sum  low. 

Cl 

0.03 

ab  -7. 9  ns  0. 4 
ne  8.0  di  8.5 

Z  3.0  ol  17.8 

Greenland. 

Elemente, 
p.  133,  1898. 

lujavrite. 

Nearly  in 
dofemane. 

so3 

Cl 

F 

Cr203 

NiO 

SrO 

0.02 

0.08 

0.16 

0.11 

0. 07 

0. 07 

or  29.5  di  28.9 
ab  8.9  ol  14.8 
an  1.1  mt  5.1 
ne  6.2  il  1.4 
ap  1. 7 

Beaver  Creek,  Bear- 
paw  Mountains, 
Montana. 

FI.  N.  Stokes. 

Weed  and  Pirsson, 

A.  J.  S.,  I, 
p.  360,  1896. 

Shonkinite. 

SUBRANG  4.  DOSODIC. 


Zr02 

1.04 

or  11. 1 
ab  26.  7 
ne  17.9 

Z  1.5 

ac  17.  6 
ns  5. 7 
di  3.8 
ol  11. 3 

Kangerdluarsuk, 

Greenland. 

C.  Detlefsen. 

H.  Rosenbusch, 
Elemente,  p.  215,1898. 

Arfvedsonite- 

analcite- 

tinguaite. 

or  19.5 
ab  4. 2 
an  3. 6 
ne  14.5 

di  22.3 
wo  8. 9 
mt  0. 9 
il  10. 3 
hm  11. 7 
ap  1. 8 

Oxford, 

New  Jersey. 

P.  Jannasch. 

H.  Rosenbusch, 
Elemente,  p.  235,1898. 

Camptonite. 

Near  mon- 
chiquose. 

Not  fresh. 

so3 

Cl 

Crs03 

NiO 

SrO 

LioO 

0. 08 
trace 

0. 07 
none 
0.15 
trace 

or  18.9 
ab  14.  7 
an  3.6 
ne  11.1 

di  24. 4 
Ol  15. 2 
mt  5.8 
il  1.4 
ap  1. 1 

Bandbox  Mountain, 
Little  Belt  Mts., 
Montana. 

W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.  R.  U.S.  G.  S., 

Ill,  p.  545,  1900. 

Analcite-basalt. 

or  21.1 
ab  10. 5 
an  3. 6 
ne  19. 6 

di  16.9 
wo  11.2 
mt  6. 0 
il  6.3 

Fohberg, 

Kaiserstuhl, 

Baden. 

K.  Grass. 

K.  Grass, 

Mt.  Bad.  G.  L-A. 

IV,  p.  115,  1900. 

Monchiquite. 

Near  malignose. 

340 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  III.  SALFEMANE — Continued. 
RANG  2.  DOM ALKALIO.  MONCHIQUASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na,0 

K20 

h20+ 

H20 

co2 

Ti02 

iJA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

49.  59 

14.51 

3.51 

5.  53 

6.  17 

9.  04 

3.52 

5.60 

1.95 

0.  36 

0. 15 

trace 

0.  49 

100.  78 

Al.  I 

.827 

.142 

.022 

.076 

.154 

.160 

.  056 

.060 

.004 

.001 

— 

.003 

2 

47.  98 

13.  34 

4.09 

4.  24 

7.01 

9.  32 

3.51 

5.00 

2.10 

1.24 

0. 58 

1.03 

trace 

0.  50 

100.  29 

Al.  I 

.800 

.131 

.026 

.059 

.175 

.  166 

.056 

.054 

.007 

.007 

— 

.003 

3 

46.  73 

10.  05 

3.  53 

8.20 

9.25 

13.22 

1.81 

3.  76 

1.24 

0.  78 

1.51 

0.  28 

100.  54 

Al.  I 

.779 

.099 

.  022 

.114 

.231 

.236 

.030 

.040 

.010 

.010 

.004 

4 

48.98 

12.  29 

2.  88 

5.  77 

9. 19 

9.65 

2.  22 

4.  96 

0.  56 

0.  26 

1.44 

0.  98 

0.08 

0.  43 

99.  99 

Al.  I 

.816 

.120 

.018 

.080 

.230 

.172 

.036 

.053 

.018 

.007 

.001 

.003 

■ 

5 

49.  09 

16.  00 

7.  14 

4.30 

5.  02 

8.  27 

4.  49 

4.  79 

0.  77 

0.  23 

• 

100. 10 

A3.  Ill 

.818 

.157 

.045 

.060 

.126 

.148 

.072 

.051 

.003 

6 

45. 19 

10.  49 

8.  60 

5.  04 

5.  97 

12.  94 

2.  04 

4.  09 

3.31 

0.  77 

1.01 

0.50 

100. 15 

A2.  II 

.753 

.104 

.054 

.070 

.149 

.231 

.033 

.043 

.013 

.007 

7 

43.  85 

15.  25 

7.  63 

4.  57 

4.  47 

8.  54 

4.  22 

4.04 

1.80 

0.  63 

1.67 

3.25 

0.  79 

A  QQ 
U.  DO 

101.04 

2.  778 

B2.  Ill 

.731 

.150 

.048 

.  063 

.112 

.153 

.068 

.043 

.041 

.005 

.005 

8 

49.  65 

14.  39 

4.21 

3.48 

6.  27 

10.12 

3.  21 

5.  46 

2.  37 

0.  79 

0.  25 

100. 19 

A3.  Ill 

.828 

.141 

.026 

.049 

.  157 

.180 

.051 

.059 

.005 

.004 

RANG  2.  DOMALKALIC.  MONCHIQUASE. 


1 

48.  35 

13.  27 

4.38 

3.  23 

8.36 

9.94 

3.35 

3.01 

2.  89 

0.  90 

0.  30 

0.  52 

0.  40 

0. 19 

0.  54 

100. 01 

Al.  I 

.806 

.130 

.027 

.044 

.209 

.177 

.054 

.032 

.006 

.003 

.003 

.004 

2 

47.82 

13.  56 

4.  73 

4.  54 

7.  49 

8.91 

4.  37 

3.  23 

3.37 

0.  67 

1. 10 

trace 

0.  50 

100.  20 

Al.  I 

.797 

.133 

.029 

.062 

.187 

.159 

.071 

.034 

.008 

.008 

.003 

3 

44.66 

12. 12 

5.81 

3.  20 

8.77 

8. 14 

4. 47 

2.  75 

4.33 

2. 19 

1.02 

2.  02 

0.21 

99.  69 

A2.  II 

.744 

.119 

.  036 

.044 

.219 

.145 

.072 

.029 

.012 

.014 

.003 

4 

45.  59 

12.  98 

4.  97 

4.  70 

8.  36 

11.09 

4.  53 

1.04 

3.  40 

0. 51 

1.32 

0.91 

0.14 

0. 13 

99.87 

Al.  I 

.760 

.127 

.031  ’ 

.065 

.209 

.198 

.072 

•  .011 

.016 

.006 

.002 

.001 

5 

49.  09 

11.98 

6.  22 

7.  94 

7.62 

10.  59 

3.  93 

2.00 

n.  d. 

0.  58 

0.  50 

100.  45 

2.  33 

A2.  II 

.818 

.117 

.039 

.110 

.191 

.189 

.063 

.021 

.007 

.004 

6 

46.  48 

16. 16 

6.  17 

6.  09 

4.02 

7. 35 

5.  85 

3.  08 

4.27 

0.  45 

0.  99 

100.  91 

2.  723 

A2.  Ill 

.  775 

.158 

.039 

.085 

.101 

.131 

.094 

.033 

.012 

7 

44.  39 

13. 12 

4. 19 

7.38 

9.  54 

9.  55 

4.17 

2.  22 

1.96 

0.16 

2.  40 

0. 93 

100. 18 

A2.  II 

.740 

.129 

.026 

.103 

.238 

.170 

.068 

.023 

.030 

.006 

8 

43.  84 

12.  82 

8.99 

5.11 

2. 39 

13.57 

3.  52 

2.90 

3.12 

3.  55 

99.81 

2.859 

A3.  Ill 

.731 

.125 

.056 

.071 

.060 

.242 

.056 

.031 

.044 

SALFEMANE - MONCHIQUOSE. 


341 


ORDER  6. 


LENDOFELIC.  PORTUGARE— Continued. 


SUBRANG  3.  SODIPOTASSIC.  SHONKINOSE. 


Inclusive. 

Norm. 

so3 

0.02 

or 

33.4 

di 

30.0 

Cl 

0.13 

an 

7.2 

ol 

5.9 

SrO 

0.21 

ne 

15. 0 

mt 

5.1 

il 

0.6 

S03 

trace 

or 

30.0 

di 

27.8 

Cl 

0.21 

ab 

4.7 

ol 

5. 4 

SrO 

0.14 

an 

5. 8 

mt 

6.0 

ne 

13.3 

il 

1.1 

ap 

2.2 

Cl 

0. 18 

or 

22.2 

di 

40.1 

an 

8.2 

ol 

10.3 

ne 

8.5 

mt 

5.1 

il 

1.5 

ap 

3.2 

F 

0.22 

or 

29.5 

di 

26.5 

Cr.,03 

trace 

ab 

5.3 

ol 

11.7 

SrO 

0.08 

an 

8.6 

mt 

4.2 

LinO 

trace 

ne 

6.8 

il 

2.  6 

ap 

2. 2 

S03 

trace 

or 

28.4 

di 

25.0 

ab 

7.9 

ol 

2.1 

an 

9.5 

mt 

10.4 

ne  16. 2 

MoSo 

0.20 

or 

23.9 

di 

33.3 

an 

7.8 

wo 

5.8 

ne 

9.4 

mi 

12.5 

il 

2.0 

or 

23.9 

di- 

20.7 

ab 

7.9 

ol 

1.5 

an  10. 8 

mt 

5.1 

ne  15. 1 

il 

6.9 

hm 

4.2 

ap 

1.9 

or 

32.8 

di 

28.9 

ab 

3.1 

ol 

3.6 

an 

8.6 

mt 

6.0 

ne 

12.8 

ap 

1.8 

Locality. 


Davis  Creek, 

High  wood  Mts., 
Montana. 

Near  High  wood  Peak, 
High  wood  Mts., 
Montana. 


Square  Butte, 

High  wood  Mts., 
Montana. 


Yogo  Peak, 

Little  Belt  Mts., 
Montana. 


Laacher  See, 
Rh.  Prussia. 


Rosengiirtchen, 
Heubach,  Hesse. 


Ziegenberg, 
Neste  rsitz, 
Bohemia. 


Near  Ivhoi,  Persia. 


Analyst. 

E.  B.  Hurlbut. 

IE  W.  Foote. 

L.  Y.  Pirsson. 

\Vr.  F.  Ilille- 
brand. 

W.  Bruhns. 

K.  Tichauer. 

F.  Hanusch. 

J.  Steinecke. 


Reference. 

Author’s  name. 

Remarks. 

L.  V.  Pirsson, 

B.  U.  S.  G.  S.,  148, 
p.  153,  1897. 

Leucite- 

syenite. 

L.  V.  Pirsson, 
B.U.S.G.S.,  148, 
p.  153,  1897. 

Leucite-basalt. 

Weed  and  Pirsson, 

B.  G.S.  A.,  VI, 
p.  414,  1895. 

Shonkinite. 

MgO  corrected, 
L.  V.  P.,  priv. 
contrib.  9.68 
in. original. 

Weed  and  Pirsson, 

A.  J.  S.,  L., 
p.  474,  1895. 

Shonkinite. 

Also  in  20  A.  R. 
U.S.  G.S.,111, 
p.  484,  1900. 

W.  Bruhns, 
cf.  N.  J.  1892,  II, 
p.  418. 

Trachyte. 

R.  WTedel, 

Jb.  Pr.G.  L-A.,  XI, 
p.  33,*  If  92. 

Nephelite- 

basalt. 

J.  E.  Hibsc.h, 

T.  M.P.  M.,XIV, 
p.  101,  1894. 

Camptonitic 

monchiquite. 

Sum  high. 

Not  fresh. 

J.  Steinecke, 

Z.  Nw.  Halle,  YI, 
p.  12,  1887. 

Leucitophyre. 

P2Cb  given  as 
1.08  II3P04. 

SUBRANG  4.  DOSODIC.  MONCHIQUOSE. 


F 

0. 25 

or 

17.8 

di 

27.2 

Cr.,03 

trace 

ab 

14.7 

ol 

6.7 

Ni'O 

0. 04 

an 

12.2 

mt 

7.2 

SrO 

0. 09 

ne 

7.4 

il 

0.9 

Li.,0 

trace 

ap 

1.0 

so3 

trace 

or 

18.9 

di 

23.9 

Cl 

0.04 

ab 

17.8 

ol 

7.4 

SrO 

0.14 

an 

7.8 

mt 

8.0 

ne 

10  5 

il 

1.2 

ap 

2.5 

or 

16.1 

di 

18.4 

ab 

19.9 

ol 

9.4 

an 

5.0 

mt 

8.4 

ne 

9.7 

il 

1.8 

ap 

4.5 

ZrOo 

0.03 

or 

6.1 

di 

30.0 

Cl 

0.05 

ab 

18.9 

ol 

6.5 

SrO 

0. 12 

an 

12.2 

mt 

7.2 

Li20 

trace 

ne 

10.2 

il 

2.5 

ap 

1.9 

or 

11.7 

di 

32.1 

ab 

9.2 

ol 

8.7 

an 

21.0 

mt 

9.0 

ne 

6.5 

il 

1.1 

ap 

1.2 

or 

18.3 

di 

22.3 

ab 

14.1 

ol 

2.9 

an 

8.6 

mt 

9.0 

ne 

19.0 

il 

1.8 

S03 

0.17 

or 

12.8 

di 

24.8 

ab 

10.5 

ol 

13.1 

an 

10.6 

mt 

6.0 

ne 

13.6 

il 

4.6 

ap 

2.0 

or 

17.2 

di 

13.0 

ab 

12.1 

wo 

16.7 

an 

10.6 

mt 

6.3 

ne 

9.4 

il 

6.8 

1 

hm 

4.8 

Big  Baldy  Mountain, 
Little  Belt  Mts., 
Montana. 


High  wood  Gap, 
High  wood  Mts., 
Montana. 


Musselshell  River, 
Crazy  Mountains, 
Montana. 


“The  Basin,’’ 
Cripple  Creek, 
Colorado. 


Santa  Maria,  Puebla, 
Mexico. 


Santa  Ciuz  R.  R., 
Cabo  Frio,  Brazil. 


Freidrichstollen, 

Allendorf, 

Rh.  Prussia. 


Blankenhornberg, 
Kaiserstuhl,  Baden. 


W.  F.  Hille- 
brand. 

L.  V.  Pirsson, 

20  A.  R.  U.  S.  G.  S., 
Ill,  p.  548,  1900. 

Analcite-basalt. 

Near  shonkin- 
ose. 

H.  W.  Foote. 

L.  V.  Pirsson, 

B.  U.  S.  G.  S.,  148, 
p.  153,  1897. 

Monchiquite. 

L.  G.  Eakins. 

W.  H.  Weed, 

B.  U.  S.  G.  S.,  148, 
p.  144,  1897. 

Monchiquite? 

Not  described. 

W.  F.  Hille- 
brand. 

W.  Cross,  J.  G.,  V., 
p.  689,  1897. 

Analcite-basalt. 

Not  fresh 

A.  Hoppe. 

A.  Hoppe,  in  Felix  and 
Lenk,  Btr.  G.  Mex.,  II, 
p.  220,  1899. 

J 

Basalt. 

Dried  before 
analysis? 

M.  Hunter. 

Hunterand  Rosenbusch, 
T.  M.  P.  M.,  XI, 
p.  454,  1890. 

Monchiquite. 

Border  of  es- 
sexose. 

Not  stated. 

F.  Beyschlag,  Erl.G.  Kt. 
Preus.  Bl.  Allendorf, 
p.  47,  1886. 

Basalt. 

K.  Gruss. 

K.  Gruss, 

Mt.  Bad.  G.  L-A.,  IV, 
p.  126,  1900. 

Leucite- 

basanite. 

342 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  Ill.  SALFEMANE — Continued. 
KANG  2.  DOMALKALIC.  MONCHIQUASE— Continued. 


No. 

SiO., 

Al./  >3 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h20+ 

H20- 

co2 

TiOa 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

9 

47.  83 

16.09 

4.  32 

3.62 

5.53 

10.  68 

4.46 

4.05 

0.  24 

0.  05 

2.27 

1.33 

trace 

100.  47 

2.  858 

A2.  II 

.797 

.158 

.027 

.050 

.138 

.191 

.072 

.043 

.028 

.009 

10 

45.  56 

14.  43 

7.  71 

6.  07 

0.  87 

9.23 

5.  57 

2.  45 

2.  79 

0.  49 

0.  25 

1.  73 

1.02 

1.47 

99.  64 

2.  759 

A2.  II 

.  759 

.141 

.048 

.084 

.022 

.165 

.090 

.026 

.022 

.007 

.021 

11 

43.  35 

11.46 

11.98 

2.  26 

11.69 

7.  76 

3.  88 

0.  99 

2.41 

0.  59 

2.  43 

1.54 

100.  34 

2.  974 

A2.  II 

.723 

.112 

.  075 

.031 

.292 

.138 

.063 

.011 

.030 

.011 

12 

44.  64 

12.  74 

4.  21 

11.17 

5.82 

10. 12 

4.31 

1.41 

0.51 

5.  86 

0.20 

100.  99 

B2.  III. 

.744 

.  125 

.026 

.156 

.146 

.180 

.069 

.015 

.073 

CC 

o 

o 

13 

44.63 

13.  77 

7.  30 

5.  60 

4.  47 

7.  96 

4.  20 

2.  65 

4.04 

1.34 

4.25 

0.  09 

0.  08 

100.  43 

A. 2  II 

.744 

.135 

.045 

.078 

.112 

.142 

.068 

.029 

.  053 

.001 

.001 

14 

45.  61 

15.  70 

6.17 

7.  29 

4.  84 

6.  34 

5.  06 

2.  67 

2.34 

3.  48 

trace 

99.  50 

2.87 

A3.  Ill 

.760 

.154 

.039 

.101 

.121 

.112 

.081 

.029 

.044 

RANG  3.  ALKALICALCIC.  LIMBURGASE. 


1 

42.  46 

12.04 

2.  19 

5.34 

12.40 

12. 14 

1.21 

2.  68 

4.  03 

|  0.55 

2.  47 

0.  84 

0. 16 

99.51 

2.94 

A2.  II 

.708 

.118 

.014 

.074 

.310 

.217 

.020 

.029 

.031 

.006 

.002 

2 

43.  74 

14.  82 

2.  40 

7.52 

6.  98 

10.81 

3.  08 

2. 90 

2.  94 

1.50 

2.80 

0.  64 

100. 23 

2.  914 

A2.  II  G 

.729 

.145 

.015 

.104 

.175 

.193 

.050 

.031 

.035 

.004 

RANG  3.  ALKALICALCIC.  LIMBURGASE. 


1 

45. 11 

12. 44 

2.  67 

9.  36 

11.56 

10.  61 

3.  05 

1.01 

0.  78 

0. 16 

2.  34 

0.51 

0.  22 

trace 

100.  02 

3.118 

Al.  I 

.  752 

.122 

.017 

.130 

.289 

.189 

.049 

.011 

.029 

.003 

,  .003 

— 

20° 

2 

42.  35 

12.  29 

3.  89 

7.  05 

13.  09 

12.  49 

2.  74 

1.04 

1.50 

0.  32 

1.82 

0.  99 

0.21 

0. 10 

100. 19 

3. 122 

Al.  I 

.706 

.120 

.024 

.098 

.327 

.223 

.043 

.011 

.023 

.007 

.003 

.001 

22° 

3 

43.66 

17.35 

7.  88 

5.40 

4.  27 

9.  39 

5. 12 

2.  07 

1.99 

1.21 

1.32 

99.  66 

A2.  II 

.728 

.170 

.019 

.  075 

.107 

.167 

.083 

.022 

.015 

.009 

4 

44.  82 

13.  68 

2.  76 

7.  57 

10. 11 

12.  76 

2.  83 

0.89 

2. 81 

1.35 

0. 15 

99.  73 

3.  016 

A2.  II 

.  747 

.134 

.017 

.106 

.253 

.227' 

.045 

.009 

.017 

.001 

5 

42.13 

16.  31 

6.  43 

7.  93 

7.37 

9.  62 

2.  27 

2.  48 

3. 16 

2.12 

0.50 

100.  32 

2.  98 

A3.  Ill 

.702 

.160 

.040 

.110 

.186 

.171 

.037 

.026 

.007 

6 

39. 13 

11.  38 

7.33 

8. 13 

8.64 

11.77 

2.  47 

1.93 

2.  87 

2.41 

4.  02 

0. 42 

100.  50 

3.  07 

A2.  II 

.652 

.ill 

.045 

.112 

.216 

.210 

.040 

.020 

.050 

.006 

7 

43.65 

11.48 

6.  32 

8.  00 

7. 92 

14.  00 

2.  28 

1.51 

1.00 

trace 

4.  00 

trace 

100. 16 

A2.  II 

.728 

.114 

.039 

.111 

.198 

.250 

.037 

.016 

.0.50 

— 

SALFEMANE - LIMBURGOSE. 


343 


ORDER  6.  LENDOFELIC.  PORTUGARE— Continued. 


SUBRANG  4.  DOSODIC.  MONCHIQUOSE— Continued. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SrO  none 

or  23.9  di  23.9 

Falkenberg,  Tetschen, 

R.  Pfohl. 

J.  E.  Hibsch, 

Leucite- 

LioO  none 

ab  6.3  ol  1.9 
an  14.  7  mt  6. 3 

Bohemia. 

T.  M.*P.  M.,  XIV, 

tephrite. 

nel6.8  il  4.3 

p.  105,  1894. 

ap  2. 8 

S03  trace 

or  14.5  di  8.5 

Schichenberg,  Tet- 

F.  Hanusch. 

J.  E.  Hibsch, 

Nephelite- 

MnO  high? 

ab  oU. 4  wo  y. o 
an  7.0  mt  11. 1 

schen,  Bohemia. 

T.  31.  P.  31. ,  XIV, 

tephrite. 

ne  9.1  il  3.4 

p.  104,  1894. 

ap  2.2 

or  6.1  di  14.5 

Hutberg,  Tetschen, 

R.  Pfohl. 

J.  E.  Hibsch, 

Augitite. 

ab  h.'l  ol  15.8 
an  10.6  mt  0.2 

Bohemia. 

T.  31.  P.  31. ,  XIV, 

ne  3.1  il  4.6 

p.  110,  1894. 

hm  11.8 

ap  3.4 

or  8.3  di  31.4 

Island  of  1891, 

II.  Foerstner. 

H.  Foerstner, 

Basalt. 

Sum  high. 

ab  16. 2  ol  5.3 
an  11.4  mt  6.0 

n.  Pantelleria, 

T.  31.  P.  31. ,  XII, 

ne  10.8  il  11.2 

Mediterranean. 

p.  512,  1891. 

CuO  0. 05 

or  16.1  di  22.6 

Banatette  River, 

O.  Pufahl. 

A.  Wichmann,  Samml. 

Foyaite. 

ab  iy.  4  ol  0.5 
an  10.6  mt  6.0 

Kupang  Bay, 

G.  31us.  Leiden,  11, 

ne  S.  8  il  8. 2 

Timor  Island. 

p.  87,  1887. 

hm  3. 0 

SnO»  trace 

or  16.1  di  15.0 

Franklin  Island, 

G.  T.  Prior. 

G.  T.  Prior, 

Basalt. 

Near  essexose. 

ab  21.5  ol  5.4 
an  12. 2  mt  9. 0 

Antarctic. 

31  in.  31ag. ,  XII, 

ne  11.4  il  6.6 

p.  80,  1899. 

SUBRANG  3.  SODIPOTASSIC.  OUROSE. 


LioO 

trace 

or  12.2  di  29.8 
an  19.2  ol  14.5 
lc  3.1  mt  3.2 
ne  5. 7  il  4. 8 
ap  1. 9 

Willow  Creek,  Castle 
Mountains,  31on- 
tana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  IT.  S.  G.  S.,  139, 
p.  115,  1896. 

3Ionchiquite. 

Cl 

s 

trace 

0. 10 

or  17.2  di  26.3 
ab  3. 1  ol  8. 7 
an  17.8  mt  3.5 
ne  12.5  il  5.4 
ap  1.3' 

Rio  do  Ouro,  Serra 
de  Tingua,  Brazil. 

P.  Jannasch. 

Hunter  and  Rosenbusch, 
T.  M.  P.  31.,  XI, 
p.  464,  1890. 

Monchiquite. 

Not  fresh? 

SUBRANG  4.  DOSODIC.  LIMBURGOSE. 


Cl 

0.11 

or 

6.1 

di 

26.4 

s 

0. 01 

ab 

13.1 

ol 

19.8 

Voo3 

0.04 

an 

17.2 

mt 

3.9 

NiO 

0.04 

ne 

6.8 

il 

4.3 

SrO 

trace 

ap 

1.1 

LioO 

trace 

ZrOo 

none 

or 

6.1 

di 

30.2 

so3‘ 

0.05 

ab 

3.7 

ol 

17.9 

S 

trace 

an 

18.3 

mt 

5.6 

Cr»03 

0.10 

ne 

10.  2 

il 

3.5 

YoO, 

0.04 

ap 

2.2 

Nio 

0.03 

SrO 

0.09 

/ 

or 

12. 2 

di 

16.6 

ab 

1U 

ol 

3.0 

an 

18.1 

mt  11.4 

ne 

14.5 

il 

2.3 

ap 

2.8 

or 

5.0 

di 

31.8 

ab 

7.3 

ol 

14.2 

an 

23.4 

mt 

3.9 

ne 

8.8 

il 

2.6 

or 

13.5 

di 

16.8 

ab 

5.2 

ol 

14.4 

an 

27.0 

mt 

9.3 

ne 

7. 7 

or 

9.5 

di 

34.7 

an 

14.2 

ol 

5.5 

lc 

1.3 

mt  10.4 

ne 

11.4 

il 

7. 7 

or 

8.9 

di 

41.6 

ab 

5.8 

ol 

2.3 

an 

17.0 

mt 

9.0 

ne 

7.4 

il 

7. 7 

Pinto  Mountain, 
Uvalde  County, 
Texas. 


Ciruella, 

Colfax  County, 
New  Mexico. 


Island  of  Cabo  Frio, 
Rio  Janeiro,  Brazil. 


Las  Amolanas, 
Atacama,  Chile. 


Wart  of  Skaill, 
Sandwick, 
Orkney  Islands. 

Hoxa,  Orkney 
Islands. 


Brandberget,  Gran, 
Norway. 


W.  F.  Hille-  W.  Cross, 
brand.  B.  U.  S.  G.  S.,  168, 

p.  61,  1900. 


W.  F.  Hille- 
brand. 


W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  171,  1900. 


M.  Dittrich. 


H.  Rosenbusch, 
Elemente, 
p.  172,  1898. 


31.  Dittrich. 

J.  S.  Flett. 

J.  S.  Flett. 

L.  Schmelck. 


F.  v.  Wolff, 

Z.  D.  G.  G.,  LI, 
p.  506,  1899. 

J.  S.  Flett, 

Tr.  R.  Soc.  Edinb., 
XXXIX,  p.  887, 1900. 

J.  S.  Flett, 

Tr.  R.  Soc.  Edinb., 
XXXIX,  p.  887, 1900. 

IV.  C.  Brugger, 

Q.  J.  G.  S.,  L, 
j).  19,  1894. 


Basalt. 


Nephelite- 

basanite. 


Essexite. 


Limburgite. 


Camptonite. 


Camptonite. 


Olivine- 

gabbro- 

diabase. 


Near  monehi- 
quose. 


Not  fresh. 


Not  fresh. 


344 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  III.  SALFEMANE— Continued. 

RANG  3.  ALKALICALCIC.  LIMBURGASE— Continued. 


No. 

Si02 

AlA 

Fe-A 

FeO 

MgO 

CaO 

Na,U 

k2o 

h2o+ 

H20- 

co* 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

8 

40.  60 

12.  55 

5.  47 

9.  52 

8.  96 

10.  80 

2.54 

1. 19 

2.  28 

2.  68 

4.  20 

100. 79 

B2.  nr 

.677 

.123 

.034 

.133 

.  224 

• 

.193 

.041 

.013 

.053 

9 

37.  90 

13. 17 

8.  83 

8.  37 

9.  50 

10.  75 

2.  35 

2. 12 

1.40 

5.30 

trace 

99.  69 

A 2.  II 

.632 

.129 

.055 

.116 

.238 

.192 

.039 

.022 

.066 

— 

10 

43.  50 

14.  74 

6.  53 

5.' 32 

3.  19 

14.  93 

3.49 

2.  11 

3.69 

2.55 

0.61 

100.  66 

2.  932 

A2.  II 

.725 

.144 

.041 

.074 

.080 

.266 

.056 

.022 

.032 

.004 

11 

43. 18 

13.  43 

5.  06 

6.41 

11.  79 

10.39 

3.  05 

1.41 

2.36 

0.  43 

2. 16 

0.  38 

101. 08 

3.021 

B2.  Ill 

.720 

.132 

.032 

.089 

.295 

.185 

.050 

.015 

■  .027 

.003 

12 

41.80 

12.  43 

6.  29 

4.  84 

. 

13.62 

10.  88 

3.  40 

1.  71 

2.17 

0.  65 

2. 15 

trace 

101.01 

3.  011 

B2.  Ill 

.697 

.  121 

.039 

.067 

.341 

.194 

.  055 

.018 

.027 

— 

13 

43. 10 

11.71 

4.  43 

8.  28 

13.  20 

10.  84 

2.  78 

1.27 

1.71 

1.88 

0.  49 

99.  78 

3.  088 

A2.  II 

.718 

.114 

.027 

.115 

.330 

.193 

.045 

.014 

.023 

.004 

• 

14 

44.81 

15.  35 

3.37 

6.  69 

12.  77 

9.  83 

3. 03 

1.69 

2.  13 

0.  48 

100. 31 

2.  98 

A3.  Ill 

.747 

.150 

.021 

.093 

.319 

.175 

.018 

.018 

.003 

15 

42.  32 

12. 11 

4.97 

6. 13 

15.  21 

91  78 

2.  66 

1.92 

2.17 

0.  62 

2.17 

0.  26 

0. 14 

101.56 

3.  069 

C2.  IV 

.706 

.119 

.031 

.085 

.380 

.175 

.043 

.020 

.027 

.002 

.002 

19° 

16 

42.  02 

13.86 

5.81 

5.  84 

10.  39 

11.43 

3.  61 

0.  86- 

2.41 

0.  56 

1.88 

0. 11 

0.  31 

101. 28 

3.  028 

C2.  IV 

.700 

.136 

.036 

.081 

.260 

.203 

.058 

.009 

.023 

.001 

.004 

19° 

17 

44.  78 

12.  76 

5.  42 

8.34 

10. 17 

10.  23 

3.56 

1.  81 

1.42 

0.  93 

0.  25 

0.92 

100.  59 

2.  952 

A2.  II 

.  746 

.125 

.034 

.116 

.254 

.182 

.057 

.020 

.003 

.006 

18 

43.  63 

14. 14 

7.  72 

4.  96 

9.  73 

11.83 

2.  84 

1.45 

3.  22 

trace 

0.94 

100.  46 

2.  934 

A3.  Ill 

.727 

.138 

.049 

.069 

.243 

.210 

.045 

.016’ 

— 

.006 

19 

41.  58 

16.  96 

8.  06 

4.  61 

10.  76 

11. 12 

4.  23 

1.23 

1.  74 

trace 

0.  41 

100.  70 

3.  00 

A3.  Ill 

.693 

.166 

.050 

.064 

.269 

.198 

.068 

.013 

— 

.003 

20 

42.  75 

17.24 

8. 10 

5.  88  | 

6. 17 

11.  14 

4.21 

2.48  . 

1.06 

2. 13 

trace 

101. 16 

3.008 

B2.  Ill 

.713 

.169 

.051 

.082 

.154 

.199 

.068  ! 

.026 

.027 

— 

RANG  4.  DOCA.LCIC. 


41.  99 

17.58 

6. 17 

8.  33 

8.03 

8.  53 

2. 12 

2.  81 

2.  99 

1.80 

0.  29 

100. 64 

3.01 

.700 

.172 

.039 

.115 

.201 

.151 

.034 

.030 

.004 

A3.  Ill 


SALFEMANE - LIMBURGOSE. 


345 


ORDER  6.  LENDOFELIC.  PORTUGARE— Continued 
SUBRANG  4.  DOSODIC.  LIMBURGOSE— Continued. 


Inclusive.  Norm. 


or 

7.2 

di 

27.6 

ab 

6.8 

ol 

11.1 

an 

19.2 

mt 

7.9 

ne 

8.0 

il 

8.2 

or 

7.2 

di 

26. 9 

an 

18.9 

ol 

8.0 

lc 

3.9 

mt 

11.6 

ne 

11.1 

il 

10.2 

hm 

0.8 

or 

12.2 

di 

17. 3 

ab 

11.0 

wo 

12.4 

an 

18.3 

mt 

9.5 

ne 

9.9 

il 

5.1 

•  ap 

1.4 

X 

0.80 

or 

8.3 

di 

26.1 

Cl 

0.23 

ab 

7.3 

ol 

15.0 

an 

18.6 

mt 

7.4 

ne 

10.2 

il 

4.2 

X 

0.94 

or 

10.0 

di 

31.6 

so3 

0.13 

an 

13.3 

ol 

13.8 

C1‘ 

trace 

ne 

15.6 

mt 

9.0 

il 

4.2 

so3 

0. 09 

or 

7.8 

di 

27.  7 

ab 

6.3 

ol 

20.4 

an 

15.3 

mt 

6.3 

ne 

9.4 

il 

3.5 

np 

1.2 

Cl 

0.16 

or 

10.0 

di 

17.8 

ab 

7.9 

ol 

23.6 

an 

23.4 

mt 

4.9 

ne 

9.4 

ap 

1.1 

X 

0.  94 

or 

11.1 

di 

26.0 

so3 

trace 

ab 

0.5 

ol 

21.1 

Cl 

0. 16 

an 

15.6 

mt 

7.2 

ne 

11.9 

il 

4.2 

X 

1.99 

or 

5.0 

di 

29.7 

Cl 

0. 20 

ab 

6.8 

ol 

10.3 

an 

19.2 

mt 

8.4 

ne 

12.8 

il 

3.5 

so3 

trace 

or 

11.1 

di 

25.6 

ab 

10.0 

ol 

17.3 

an 

13.3 

mt 

7.9 

ne 

10.8 

ap 

2.0 

or 

8.9 

di 

25.4 

ab 

11.0 

ol 

10.5 

an 

21.4 

mt 

11.4 

ne 

6.8 

ap 

1.9 

or 

7.2 

di 

22.7 

ab 

1.6 

ol 

12. 9 

an 

23.6 

mt 

11.6 

ne 

18.5 

ap 

1.0 

or 

14.5 

di 

27.1 

ab 

0.5 

ol 

2.5 

an 

20.9 

mt 

11.8 

ne 

19.0 

il 

4.2 

Locality. 


Maena,  Gran,  Nor¬ 
way. 


Brandberget,  Gran, 
Norway. 


Limberg, 

Kaiserstuhl, 

Baden. 

Ulmenstein, 

Rhongebirge. 


Pietzelstein, 

Rhongebirge. 


Ilmenberg, 

Rhongebirge. 


Steller’s  Kuppe, 
Hesse. 


Schaumburg, 
n.  Cassel, 
Hesse-Nassau. 

Hunrodsberg, 
n.  Cassel, 
Hesse-Nassau. 

Hiinenberg, 

Bl.  Melsungen, 
Prussia. 


Bachelsdorf, 

Tetschen, 

Bohemia. 

Bachelsdorf, 

Tetschen, 

Bohemia. 

Scharfenstein, 

Bohemia. 


Analyst. 

Reference. 

Author’s  name. 

Remarks. 

V.  Schmelck. 

W.  C.  B rugger, 

Q.  J.  G.  S.,  L, 
p.  26,  1894. 

Camptonite. 

Not  fresh. 

V.  Schmelck. 

W.  C.  Brogger, 

Eg.  Kg.,  Ill, 
p.  93,  1899. 

Hornblendite. 

K.  Grass. 

K.  Grass, 

Mt.  Bad.  G.  L-A., 

IV,  p.  134,  1900. 

Augitite. 

E.  Moller. 

E.  Moller, 

N.  J.,  1888,  I, 

p.  112. 

Limburgite. 

Sum  high. 

E.  Muller. 

E.  Moller, 

N.  J.,  1888,  I, 

p.  116. 

Nephelite- 

basalt. 

Sum  high. 

Kltiss. 

H.  Proescholdt, 

Jb.  Pr.  G.  L-A., 

XIV,  p.12,  1894. 

Basalt. 

II.  Wolff. 

K.  Oebbeke, 

Jb.  Pr.  G.  L-A., 

IX,  p.  402,  1889. 

Nephelite- 

basanite. 

O.  Fromm. 

O.  Fromm, 

Z.  D.  G.  G.,  XLIII, 
p  68,  1891. 

Limburgite. 

Sum  high. 

O.  Fromm. 

0.  Fromm, 

Z.  D.  G.  G.,  XLIII, 
p.  75,  1891. 

Nephelite- 

basalt. 

Sum  high. 

G.  F.  Steffen. 

F.  Beyschlag, 

Erl.  G.  Kt.  Preus. 

Bl.  Melsungen, 
p.  20,  1891. 

Basalt. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XV, 
p.  247,  1896. 

Basalt. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XV, 
p.  247,  1896. 

Basalt. 

Near  etindose. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M.,  XVII, 
p.  48,  1897. 

Basalt. 

Sum  high. 

SUB  RANG  2.  SODIPOTASSIC. 


or  16.7  di  9.7 
ab  4.2  ol  18.4 
an  30.  0  mt  9. 0 
ne  7.4 

Rennibuster, 

Orkney  Islands. 

J.  S.  Flett. 

J.  S.  Flett, 

Tr.  R.  Soc.  Edinb., 
XXXIX,  p.  887, 1900. 

Camptonite. 

Properly  in  lim- 
burgose,  if 
Ti02  were  de¬ 
termined.  Cf. 
Nos.  5  and  6. 

340 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  III.  SALFEMANE— Continued. 

RANG  4.  DOCALCIC. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

KoO 

h2o+ 

h2o- 

C02 

Ti02 

iJA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

38.  58 

20.  42 

7.60 

5.91 

12.  93 

9.  43 

2.  29 

1.39 

1.25 

99.80 

A3.  Ill 

.643 

.200 

.048 

.082 

.323 

.168 

.037 

.015 

2 

41. 18 

17.94 

9.81 

1. 16 

11. 18 

12.38 

3. 15 

0. 93 

2.  03 

0.  50 

100. 26 

3.  064 

A3.  Ill 

.686 

.  176 

.  061 

.017 

.280 

.221 

.051 

.010 

.006 

3 

41.13 

18. 18 

4.  71 

7.  64 

10.  59 

13.  20 

2.00 

1.59 

1.  74 

100. 78 

A3.  Ill 

.686 

.178 

.029 

.106 

.265 

.235 

.032 

.017 

4 

42.71 

16.  03 

9.31 

1.83 

10.  44 

14.  70 

2.  71 

0.  24 

2.  78 

100. 75 

A3.  Ill 

.712 

.157 

.058 

.  025 

.261 

.262 

.043 

.003 

5 

39.  84 

19.  71 

7.  73 

8.  89 

7.33 

13.  52 

1.59 

0.  53 

0.  86 

0.  08 

trace 

trace 

100.  08 

3. 182 

A2.  II 

.664 

.193 

.049 

.124 

.183 

.241 

.026 

.  006 

.001 

— 

— 

15° 

6 

38.  62 

13.  90 

5.  97 

8.65 

11.21 

15.  54 

2.  01 

0. 57 

1.46 

1.86 

0.60 

0.30 

100.  69 

A2.  II 

.644 

.136 

.037 

.121 

.280 

.277 

.032 

.007 

.023 

.004 

.004 

CLASS  III.  SALFEMANE. 
RANG  1.  PERALKALIC.  MALIGNASE. 


1 

47.  85 

13.  24 

2.  74 

2.  65 

5.68 

14.  36 

3.  72 

5.  25 

2.  74 

2.  42 

100.  65 

2.  879 

A3.  Ill 

.798 

.130 

.017 

.037 

.142 

.256 

.060 

.056 

.017 

RANG  1.  PERALKALIC.  MALIGNASE. 


1 

51.  88 

14. 13 

6.  45 

0.  94 

3.44 

10.  81 

6.  72 

4.57 

0.  18 

0.  33 

0.  96 

9 

100. 41 

2.  88 

A2.  II 

.865 

.139 

.  .040 

.013 

.086 

.193 

.108 

.049 

.004 

.007 

2 

51.38 

15.88 

1.48 

4.37 

4.43 

8.  62 

7. 57 

4.  20 

0.  42 

0.12 

0.  98 

99.  45 

A2.  II 

.856 

.156 

.009 

.061 

.ill 

.154 

.122 

.045 

.002 

.007 

3 

44.  65 

13.  87 

6.  06 

2.  94 

5. 15 

9.57 

5.  67 

4.49 

2.10 

0.  96 

0.11 

0.  95 

1.50 

0. 17 

0.  76 

99.  92 

Al.  I 

.744 

.136 

.038 

.041 

.129 

.171 

.091 

.048 

.012 

.011 

.002 

.005 

4 

42.02 

12.  05 

7.  93 

5.06 

2. 18 

17.01 

4. 95 

3.  15 

0.  67 

2.36 

1.66 

0.96 

100.  54 
.34 

A2.  II 

.700 

.118 

.050 

.071 

.  055 

.304 

.080 

.034 

.029 

.012 

.014 

100. 20 

RANG 

2.  DOMALKALIC.  KAMERUNASE. 

1 

46.  04 

12.  23 

3.  86 

4.60 

10.  38 

8.97 

2.  42 

5.  77 

2.  87 

0.  64 

1. 14 

trace 

0.  48 

99.  76 

Al.  I 

.  767 

.120 

.024 

.064 

.260 

.160 

.039 

.062 

.008 

.008 

— 

.003 

SALFEMANE - SR  3  OF  KAMERUNASE. 


347 


ORDER  6.  LENDOFELIC.  PORTUGARE— Continued. 


SUBRANG  3.  PRESODIC. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  1.1 
an  41. 1 
le  5. 7 
ne  10. 5 

di  4.3 
ol  24. 7 
mt  11.1 

Lherz, 

Pyrenees,  France. 

A.  Pisani. 

A.  Lacroix, 

C.  R.  VIII.  Cong.  G. 
Int.,  p.  833,  1901. 

Ariegite. 

or  4. 5 
an  32. 0 
lc  0.9 

ne  14.5 

di  22. 9 
ol  12.2 
mt  2. 6 
il  0.9 
hm  8. 0 

Kreuzberg, 

Rhongebirge. 

E.  v.  Seyfried. 

E.  v.  Sevfried, 
cf.  N.  J.,  1898,  II, 
p.  65. 

Basanite. 

Iron  oxides? 

an  35. 9 
lc  7.4 
ne  9. 1 

di  16.7 
ol  19. 2 
am  3. 2 
mt  6.7 

Eckmannshain, 

Vogelsberg, 

Hesse. 

H.  Sommerlad. 

H.  Sommerlad, 

N.  J.,  1884,  II, 
p.  223. 

Leucite-basalt. 

or  1.7 
ab  3.7 
an  30.  9 
ne  10.2 

di  32. 6 
ol  7.7 
mt  5.8 
hm  5. 3 

Burberg, 
n.  Carlsbad, 
Bohemia. 

J.  M.  Clements. 

J.  M.  Clements, 

Jb.  G.  R-A.  Wien, 
XL.,  p.  345,  1890. 

Basalt. 

Iron  oxides? 

or  3.3 
ab  0.5 
an  44. 8 
ne  7. 1 

di  18.3 
ol  13.9 
mt  11.4 

Pavone,  n.  Ivrea, 
Piedmont. 

M.  Dittrich. 

F.  R.  van  Horn, 

T.  M.  P.  M.,  XVII, 
p.  414,  1898. 

Hornblende- 

gabbro. 

an  27. 0 
lc  3.1 
ne  9. 1 

di  17.9 
ol  19.7 
am  8. 8 
mt  8. 6 
il  3.5 
ap  1.3 

Dakar  Peak, 

Cape  Verde  Islands. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.  Wien, 
XLVI,  p.  288,  1896. 

Limburgite. 

ORDER  7.  LENFELIC.  KAMERUNARE. 
SUBRANG  3.  SODIPOTASSIC. 


or  23. 4  di  35. 6 

Poohbah  Lake, 

F.  L.  Ransome. 

A.  C.  Lawson, 

Nephelite- 

an  3. 9  wo  3. 3 
1c  fi  1  mt,  4  0 

Rainy  River  dis- 

B.  Dep.  G.  Un.  Cal.. 

pyroxene- 

ne  17.0  ap  5.3 

trict,  Ontario. 

I,  p.  350,  1896. 

malignite. 

SUBRANG  4.  DOSODIC.  MALIGNOSE. 


or 

27.2 

ac 

8.3 

ab 

7.9 

'di 

18.5 

* 

ne  21.3 

wo 

10.0 

mt 

2.1 

il 

0.6 

hm 

2.0 

ap 

2.2 

or 

25.0 

ac 

4.2 

ab 

2.6 

di 

36.8 

ne 

27.3 

ol 

0.7 

ap 

2.2 

so3 

0.61 

or 

26.7 

di 

27.9 

Cl 

trace 

ab 

2.6 

wo 

0.2 

SrO 

0. 37 

an 

1.1 

mt 

6.6 

Li20 

trace 

ne  18. 5 

il 

1.8 

no 

5. 0 

hm 

1.4 

ap 

3.5 

S 

0. 54 

or 

18.9 

di 

11.9 

ab 

1.6 

wo 

23. 8 

an 

1.1 

mt 

9.7 

ne  21. 9 

il 

4.5 

hm 

1.3 

ap 

4.0 

Poohbah  Lake,  Rainy 
River  district, 
Ontario. 


Poohbah  Lake,  Rainy 
River  district, 
Ontario. 

Gordon’s  Butte, 

Crazy  Mountains, 
Montana. 


As,  Alno, 
Sweden. 


W.  C.  Blasdale. 


A.  C.  Lawson, 

B.  Dep.  G.  Un.  Cal., 
I,  p.  356,  1896. 


J.  W.  Sharwood. 


A.  C.  Lawson, 

B.  Dep.  G.  Un.  Cal., 
I,  p.  359,  1896. 


W.  F.  Hille- 
brand. 


J.  E.  Wolff, 

B.  U.  S.  G.  S.,  150, 
p.  201,  1898. 


X.  Sahl bom. 


X.  Sahlbom, 

X.  J.,  1897,  II,  p.  99. 


Garnet- 

pyroxene- 

malignite. 


Amphibole- 

malignite. 


Theralite. 


Ijolite- 

porphyry. 


Sum  low. 


SUBRANG  3.  SODIPOTASSIC. 


SO-,  trace 

or  22.2  di  26.3 

Arrow  Peak, 

II .  W.  Foote. 

L.  V.  Pirsson, 

Leucite-basalt? 

Cl  0. 11 

SrO  0. 25 

an  5.3  ol  12.3 
lc  9. 6  mt  5. 6 

High  wood  Moun- 

B.  U.  S.  G.  S.,  148, 

ne  11. 1  il  1.2 

tains,  Montana. 

p.  153,  1897. 

ap  2. 6 

. 

348 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE — Continued. 

RANG  2.  DOMALKALIC.  KAMERUNASE. 


No. 

Si(>2 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K^O 

h2o+ 

H.,0— 

co2 

Ti02 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

44.  31 

17.  20 

4.  64 

3.  73 

6.  57 

10.  40 

4.  45 

3.  64 

3.  30 

0.  77 

0. 10 

99. 11 

B3.  IV 

.739 

.169 

.029 

.051 

.164 

.185 

.072 

.038 

.001 

2 

41.80 

14.56 

6.  09 

6.41 

4.  66 

14.  87 

4.25 

1.94 

1.  18 

0.40 

4. 14 

0.  52 

100.  82 

B2.  Ill 

.(197 

.143 

.038 

.089 

.117 

.  265 

.  069 

.021 

.052 

.004 

3 

47.  10 

16.  42 

4.63 

7.04 

5.  00 

7.  64 

6.  36 

•  3.47 

0.  40 

1.  75 

0.  48 

0.  36 

100. 65 

A2.  II 

.785 

.161 

.029 

.098 

.325 

.136 

.103 

.037 

.  022 

.003 

.  005 

4 

45.  77 

16.  66 

3.  72 

6.  21 

7.03 

9.01 

6.  23 

2.  28 

1.87 

trace 

1.70 

0.  29 

trace 

100.  27 

A2.  II 

.  763 

.158 

.023 

.  086 

.176 

.161 

.105 

.024 

— 

.021 

.002 

— 

5 

42.  77 

14. 16  . 

5.05 

6.26 

2.  69 

14.  34 

4.  67 

2.51 

3.60 

3.  05 

0.30 

99.  40 

2.904 

A3.  Ill 

.713 

.139 

.032 

.087 

.067 

.255 

.  075 

.027 

.038 

.002 

6 

39.  88 

15.  37 

8.  67 

2.  91 

7.  16 

13.  83 

4.  73 

2.01 

2. 17 

1.04 

2.  29 

trace 

100.  06 

2.  918 

A2.  II 

.665 

.150 

.054 

.040 

.179 

.246 

.076 

.022 

.013 

.016 

— 

' 

7 

48.  87 

12. 11 

3.17 

10.  21 

3.  52 

15.  18 

5. 11 

1.81 

0.  58 

0.  72 

trace 

101. 28 

3. 10 

B2.  Ill 

.815 

.119 

.020 

.142 

.088 

.271 

.082 

.019 

.009 

— 

8 

46.  53 

14.31 

3.61 

8. 15 

6.  56 

12.  13 

4. 95 

1.58 

0.  20 

2.  99 

0.  22 

101. 23 

2.  96 

B2.  Ill 

.  776 

.140 

.023 

.113 

.164 

.217 

.080 

.018 

.036 

.003 

* 

9 

40. 10 

15.27 

10. 13 

1.85 

4.  59 

12.08 

4.  78 

3.  34 

2.  93 

0.  23 

3.64 

0.  87 

0.08 

99.  89 

2.91 

A2.  II 

.668 

.150 

.063 

.026 

.115 

.216 

.077 

.035 

.046 

.006 

.001 

10 

39.  97 

17.30 

7.41 

3.05 

3.  82 

10.  53 

5. 14 

3.  56 

4. 11 

0.  33 

3.  34 

0.  84 

0.  09 

99.89 

2.  86 

At.  I 

.666 

.170 

.046 

.043 

.096 

.387 

.083 

.038 

.042 

.006 

.001 

11 

39.  30 

13.  66 

7.42 

4.45 

4.  46 

11.37 

5.  78 

1.44 

4.  53 

0. 15 

3.  62 

0.  85 

0.  08 

99.  76 

2.  79 

0. 11 

At.  I 

.  655 

.134 

.046 

.062 

.112 

.203 

.093 

.016 

.045 

.006 

.001 

99. 65 

RANG  3.  ALKALICALCIC.  ETINDASE. 


1 

36. 40 

12.  94 

8.  27 

4.59 

11.44 

14.46 

0.97 

3.01 

2.36 

3.  94 

0.42 

1.04 

99.  84 

A2.  II 

.607 

.127 

.  052 

.064 

.  286 

.258 

.016 

.032  i 

.  005 

.007 

salfemane - SR  3  OP1  etindase. 


349 


ORDER  7.  LENFELIC.  KAMERUNARE— Continued. 

SUBRANG  4.  DOSODIC.  KAMERUNOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name 

\ 

or  12.2  di  27.8 

Gordon’s  Butte, 

E.  A.  Schneider. 

J.  E.  Wolff, 

Theralite. 

an  16. 4  ol  4. 5 
lc  7. 0  lilt  6. 7 

Crazy  Mountains, 

B.  U.  S.  G.  S.,  150, 

ne  20. 4 

Montana. 

p.  201,  1898. 

or  11. 7  di  25. 3 

Monchique,  Serra  de 

Singhof. 

K.-Koschlau  and  Hack- 

Basic  segrega- 

an  14. 7  mt  8.8 

Monehique, 

- 

mann,  T.  M.  P.  M., 

tionin  nephe 

ne  18.7  il  8.0 

Portugal. 

XVI,  p.  237,  1896. 

lite-syenite. 

ap  1.2 

or  20.6  di  24.4 

Heum, 

V.  Schmelck. 

W.  C.  Brogger, 

Heumite. 

ab  8.  y  ol  4.  / 
ail  5. 8  mt  6. 7 

Laugendal, 

Eg.  Kg.,  Ill, 

ne  24.4  il  3.4 

Norway. 

p.  91,  1898. 

ap  1.0 

or  13.3  di  29.5 

Kjose  Aklungen, 

O.  Heidenreich. 

W.  C.  Brogger, 

Farrisite. 

ab  o.  8  ol  o.  4 
an  8.1  mt  5.3 

Laugendal, 

Pig.  Kg.,  Ill, 

ne  26.7  il  3.2 

Norway. 

p.  65,  1898. 

or  15. 0  di  18.  7 

Kiechlingsberg, 

K.  Grass. 

K.  Grass, 

Monchiquite. 

ab  4. 2  wo  14.  7 
an  10.3  mt  7.4 

Kaiserstuhl, 

Mt.  Bad.  G.  L-A., 

ne  19. 0  il  5. 9 

Baden. 

IV,  p.  113,  1900. 

ap  0. 7 

4 

or  5.6  di  30.4 

Lobauer  Berg, 

J.  Stock. 

J.  Stock, 

Nephelite- 

an  14.  5  ol  2.  6 
lc  5.2  mt  6.3 

Saxony. 

T.  M.  P.  M.,  IX, 

dolerite. 

ne  21.6  il  2.0 

p.  466,  1888. 

hm  4.3 

ap  5.3 

or  10.6  di  47.1 

Poutelitschorr, 

H.  Berghell. 

V.  Hackman, 

Augite- 

ab  7. 3  wo  6. 1 
an  5. 0  mt  4. 6 

Umptek,  Kola, 

Fennia,  XI,  No.  2, 

porphyrite. 

ne  19.3  il  1.4 

Finland. 

p.  193,  1894. 

or  10.0  di  39.3 

Kunjokthal,  Kola. 

F.  Eichleiter. 

F.  Eichleiter, 

Theralite. 

ab  6. 8  ol  3. 4 
an  11. 7  mt  5. 3 

Finland. 

Vh.  G.  R.-A.  Wien, 

ne  19. 0  il  5. 5 

XXVII,  p.  217,  1893. 

- 

or  12.8  di  24.9 

Etinde  Volcano, 

M.  Dittrich. 

E.  Esch, 

Leucite- 

an  10.6  wo  2.7 
lc  5.2  il  4.0 

Kamerun,  Africa. 

Sb.  Berl.  Akad., 

nephelinite. 

ne  21. 9  hm  10. 1 

1901,  p.  299. 

pf  2. 7 

ap  2. 0 

X  0.20 

or  10.0  di  20.7 

Etinde  Volcano, 

M.  Dittrich. 

E.  Esch, 

Leucite- 

SO3  U.  06 

Cl  0. 14 

an  13. 6  wo  2. 5 
lc  8.7  il  6.5 

Kamerun,  Africa. 

Sb.  Berl.  Akad., 

nephelinite. 

ne  23. 6  hm  7. 4 

1901,  p.  299. 

ap  1. 9 

S03  2.17 

Q  3.3  di  24.2 

Etinde  Volcano, 

M.  Dittrich. 

E.  Esch, 

Hauynophyr. 

Cl  0. 48 

or  8.9  wo  1.4 
an  16. 4  mt  3.  9 

Kamerun,  Africa. 

Sb.  Berl.  Akad., 

so  6. 9  il  6. 9 

1901,  p.  299. 

no  18. 2  hm  4. 6 

ap  2. 0 

SUBRANG  2.  DOPOTASSIC. 


an 

22.0 

di 

6.9 

lc 

14.0 

ol 

18.6 

ne 

4.5 

am  12. 5 

mt 

12.1 

il 

0.8 

ap 

2.3 

Near  Hot  Springs, 
Arkansas. 


L.  G.  Eakins. 


J.  F.  Kemp, 

A.  R.  Ark.  G.  S.,  1890, 
p.  399,  1891. 


Ouachitite. 


Remarks. 


Sum  low.  Prop¬ 
erly  in  malig- 
nose,  if  Ti02 
were  deter¬ 
mined. 


Near  malignose. 


Sum  high. 


Sum  high.  Also 
in  V.  Hack- 
man,  Fennia, 
XI,  No.  2,  p. 
168,  1894. 


Not  fresh. 


350 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  III.  SALFEMANE— Continued. 
RANG  3.  ALKALICALCIC.  ETINDASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

A 

K20 

H,0+ 

h20- 

co2 

Ti02 

. 

FA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

42.  51 

12.  85 

2.  67 

7.  52 

12.  00 

11.83 

2.  75 

2. 15 

2.  96 

3.  46 

0.  83 

100.  53 

2.  905 

A3.  Ill 

.709 

.126 

.017 

.104 

.300 

'.210 

.044 

.023 

.012 

2 

43. 18 

12.66 

3.  66 

8.69 

13.  74 

12.  51 

3. 19 

1.22 

1.42 

0.  88 

101. 15 

2.  99 

B2.  Ill 

.720 

.124 

.023 

.121 

.344 

.223 

.051 

.013 

.006 

3 

41.  67 

11.39 

4.  81 

9.  72 

12.37 

11.23 

3.  57 

1.06 

2.  57 

1.39 

99.  78 

2.42 

A3.  Ill 

.695 

.112 

.030 

.136 

.309 

.200 

.  058 

.011 

.010 

4 

41.68 

17.98 

5.40 

8.  42 

7.40 

11.84 

4.  28 

2.07 

1.09 

1.21 

trace 

101.37 

3.  015 

C2.  IV 

.695 

.176 

.034 

.117 

.185 

.211 

.069 

.022 

.  015 

— 

5 

39.  33 

15.  26 

6.  36 

5.  99 

9.  78 

14.52 

3.  47 

1.53 

2.  54 

0. 12 

1.01 

0.  93 

100. 84 

3.  082 

B2.  Ill 

.  656 

.150 

.040 

.083 

.245 

.259 

.056 

.016 

.012 

.006 

6 

39.  37 

16.  50 

2.  28 

7. 97 

4.48 

10.  22 

4.  73 

3.  38 

4.  77 

0.  64 

3.31 

0.13 

0.  06 

100.  07 

2.  82 

Al.  I 

.  656 

.162 

.014 

.in 

.112 

.164 

.076 

.036 

.041 

.001 

.001 

RANG  3.  ALKALICALCIC.  ETINDASE. 


1 

40.  73 

20.  70 

4.  26 

8.  38 

5.32 

10.  78 

7.  28 

0.  60 

2.  00 

trace 

0.  46 

0.  49 

trace 

101.00 

3. 141 

B2.  Ill 

.679 

.203 

.027 

.117 

.133 

.193 

.118 

.006 

— 

.006 

.003 

— 

CLASS  III.  SALFEMANE. 

RANG  1.  PERALKALIC.  CHOTASE. 


1 

46.  51 

11.86 

7.  59 

4.  39 

\  70 

4.  /o 

7.41 

2.  39 

8  71 

2.45 

1. 10 

none 

0.  83 

0.  80 

0.  22 

0.50 

99.  78 

Al.  I 

.  775 

.115 

.047 

.061 

.118 

.132 

.038 

.092 

.010 

.006 

.003 

.003 

RANG  2.  DOMALKALIC.  ALBANASE. 


1 

45.99 

17. 12 

4.17 

5.38 

5.  30 

10.  47 

2.  18 

8.  97 

0.  45 

0.  37 

trace 

0.  25 

100. 65 

A2.  II 

.  767 

.168 

.026 

.075 

.133 

.187 

.035 

.095 

.005 

— 

.002 

RANG  2.  DOMALKALIC.  ALBANASE. 


36.  36 

11.67 

6.  62 

5.  36 

13.  58 

9.  48  3.  59 

3.  74 

6.  18 

trace 

99.61 

3.  078 

.606 

.115 

.041 

.075 

.340 

.169  . 058 

.039 

- 

.077 

t 


A2.  II 


SALFEMANE - SR  3  OF  ALBANASE. 


351 


ORDER  7.  LENFELIC.  KAMERUNARE — Continued. 


SUBRANG  4.  DOSODIC.  ETINDOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

an  16.4 
lc  10.0 
ne  12.5 

di  31.3 
ol  18.8 
am>  1. 2 
nit  '3.9 

Grainbank,  Kirkwall, 
Orkney  Islands. 

J.  S.  Flett. 

J.  S.  Flett, 

Tr.  R.  Soc.  Edinb., 
XXXIX,  p.  891,1900. 

31onchiquite. 

Not  fresh. 

or  2.8 
an  16. 7 
lc  3. 5 
ne  14.5 

di  32.0 
ol  23. 1 
mt  5. 3 
ap  2.0 

Ibrakuppe,  Oberaula, 
Hesse. 

✓ 

H.  Wolff. 

LI.  AVolff,  cf.  N.  J.,  1891, 
II,  p.  279. 

Nephelite- 

basalt. 

Sum  high. 

or  6. 1 
ab  4. 2 
an  12.0 
ne  14.2 

di  27. 7 
ol  22. 8 
mt  7. 0 
ap  3. 3 

Dohnberg,  Oberaula, 
Hesse. 

H.  Wolff. 

H.  Wolff,  cf.  X.  J.,  1891, 
II,  p.  279. 

Nephelite- 

basalt. 

Nearly  in  dofe- 
mane. 

an  23. 6 
lc  9. 6 
ne  19. 6 

di  23.2 
ol  11.6 
am  2. 5 
mt  7. 9 
il  2.3 

Paudler’s  Berg, 
Giintersdorf, 
Bohemia. 

R,  Pfohl. 

J.  E.  Hibsch, 

T.  31.  P.  31.,  XV, 
p.  247,  1896. 

Basalt. 

Sum  high. 

an  21.7 
lc  7. 0 
ne  15.9 

di  18.6 
ol  14. 1 
am  7.  7 
mt  9. 3 
il  1.8 
ap  2. 0 

Grosswohlen, 

Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  31.  P.  31.,  XVII, 
p.  49,  1897. 

Nephelite- 

basalt. 

S03  2.14 

Cl  0. 09 

or  12.2 
an  21.4 
lc  6. 1 
no  18.0 

di  19.7 
ol  6. 6 
mt  3.2 
il  6.3 

Etinde  Volcano, 
Kamerun,  Africa. 

31.  Dittrich. 

E.  Esch, 

Sb.  Berl.  Akad.,  1901, 
p.  299. 

Hauynophyre. 

SUBRANG  5.  PRESODIC. 


Cl  trace 

S  trace 

NiO  trace 

an  21.9  di  23.9 
lc  2. 6  ol  9. 6 
ne  33.5  mt  6.3 
il  0.9 
ap  1.1 

Volkersberg, 

n.  Briickenau, 

.  Rhbngebirge. 

0 

H.  Lenk. 

H.  Lenk, 

Vh.  Ph.  Ges.  Wurzb., 
XXI,  p.  76,  1887. 

Nepholite- 

basalt. 

Sum  high. 

ALOg  high? 
Alkalies? 

ORDER  8.  FELDOLENIC.  BOHE31ARE. 

SUBRANG  2.  DOPOTASSIC.  CHOTOSE. 

S03  0. 05 

Cl  0. 04 

F  trace 

Cr»03  none 

Ni'O  0. 04 

SrO  0. 16 

or  7.8  ac  6.9 
lc  34.0  di  25.1 
ne  10. 8  ol  2. 5 
mt  7. 4 
il  1.5 
ap  1.9 

Bearpaw  Peak, 

Bearpaw  3Iountains, 
Choteau  County, 
3Iontana. 

LI.  N.  Stokes. 

Weed  and  Pirsson, 

A.  ,T.  S.,  II, 
p.  147,  1896. 

*. 

Leucitite. 

Contains  traces 
ofCoO,  CuO, 
and  Li20. 
Complete  in  B, 
U.S.G.S.,148. 
p.  157,  1897. 

SUBRANG  2.  DOPOTASSIC.  ALBANOSE. 

SrO  none 

an  10.  6  di  12. 0 

lc  41.4  ol  9.7 

ne  9. 9  am  9. 7 

mt  6. 0 
il  0.8 

Capo  di  Bove, 

Alban  Hills,  Italy. 

Id.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

A.  J.  S.,  IX, 
p.  53,  1900. 

Leucitite. 

Near  vesuvose. 

SUBRANG  3.  SODIPOTASSIC. 

§ 

Cr,03  2. 93 

an  5. 0  di  5. 3 
lc  17.0  ol  22.1 
ne  16.5  an  10.2 
il  8.6 
cm  4. 3 
hm  6.  6 
pf  2. 6 

Neuhbwen,  Hegau, 
Baden. 

U.  Gruben- 
mann. 

U.  Grubenmann, 

In.  Diss.  Zurich, 

1886,  p.  28. 

3Ielilite-basalt. 

Dried  before 
analysis. 
Ignition —2. 01. 

9 


352  CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 

('LASS  III.  SALFEMANE — Continued. 
KANG  2.  DOMALKALIC.  ALBANASE. 


No. 

SiO, 

A1A 

Fe,03 

FeO 

MgO 

CaO 

Na,0 

k2o 

h2o+ 

H,0 

co2 

TiG2 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

41. 75 

17.04 

6.  35 

3.41 

4.  71 

14.  57 

6. 17 

3.  98 

0.  62 

0.  28 

none 

0.  58 

1.  09 

trace 

none 

100.  60 

3.084 

Al.  I 

.696 

.167 

.040 

.047 

.118’ 

.260 

.098 

.042 

.007 

.008 

— 

— 

26° 

2 

38.  93 

15.  41 

5. 10 

4.  24 

5.57 

16.  49 

5.27 

1.78 

5.20 

1.62 

0.  35 

trace 

100.  57 

Al.  I 

.649 

.151 

.032 

.059 

.139 

.294 

.085 

.019 

.020 

.002 

, — 

3 

43. 18 

15.  24 

7.61 

2.  67 

5.  81 

10.  63 

5.  68 

4.  07 

3.  57 

99.40 

2.  93 

B3.  IV 

.720 

.149 

.048 

.038 

.145 

.189 

.092 

.043 

4 

42.  68 

17.90 

2.  45 

7.22 

8.  48 

9.  78 

5.91 

3. 63 

3.  02 

- 

101.07 

2.81 

B3.  IV 

.711 

.  175 

.015 

.100 

.212 

.175 

.095 

.038 

5 

40. 15 

17.  32 

7.  25 

4.00 

4.  43 

11.  78 

5.  99 

3.  78 

1. 18 

0. 15 

3.21 

0.71 

0.  08 

100.  38 

3.01 

Al.  I 

.669 

.170 

.045 

.  056’ 

.in 

.210 

.097 

.040 

.040 

.005 

.001 

6 

38.39 

12.  64 

7.40 

6. 15 

6.  46 

14.  17 

4.  35 

2.  44 

1.62 

0.  23 

4.  44 

1.  16 

100.  31 

3.  10 

Al.  I 

.640 

.124 

.046 

.086 

.162 

.253 

.070 

.026 

.  056 

.008 

7 

39.  64 

16.  98 

6.  61 

9.31 

6.  65 

10.  58 

5.95 

3.  09 

1.32 

100. 13 

A3.  Ill 

.661 

.166 

.041 

.129 

.  166 

.189 

.096 

.033 

RANG  2.  DOMALKALIC.  ALBANASE. 


46. 15 

13.  25 

1.29 

8.  54 

7.  82 

13.  89 

5.  77 

0.  93 

2.01 

trace 

0.36 

0.15 

0.  22 

100.  37 

.769 

.130 

.008 

.119 

.196 

.248 

.093 

.010 

.004 

.001 

.003 

CLASS  III.  SALFEMANE. 
RANG  1.  PERALKALIC.  IJOLASE. 


1 

42.  65 

9. 14 

5. 13 

1.07 

10.  89 

12.  36 

0.  90 

7.  99 

2. 18 

2.04 

1.  64 

1.52 

0. 12 

0.  89 

loo.  n 

2.  857 

0.  20 

Al.  1 

.711 

.090 

.032 

.017 

.272 

.220 

.014 

.085 

.020 

.011 

.002 

.006 

99. 91 

22° 

RANG  1.  PERALKALIC.  IJOLASE. 


1 

43.70  {  19.77 

3.  35 

3.47 

3.  94 

10.  30 

9.  78 

2.  87 

0.  89 

0.  89 

1.34 

trace 

100.  30 

A2.  II 

.728  1  .195 

.021 

.049 

.099 

.184 

.158 

.030 

.011 

.  009 

— 

2 

43.50  14.60 

5.40 

8.  28 

6. 16 

8.  70 

7.  34 

2.  95 

2.50 

0. 10 

trace 

99.  90 

2.  94 

A2.  II 

. 725  . 143 

.034 

.115 

.154 

.  155 

.118 

.032 

.001 

RANG  1.  PERALKALIC.  IJOLASE. 


42.  07 

18.68 

1.  68 

4.  39 

3.  53 

10.  83 

11.00 

1.87 

1.20 

0.  60 

1.00 

2.44 

99.  66  • 

.701 

.185 

.011 

.061 

.088 

.193 

.177 

.020 

.012 

.017 

A2.  It 


SALFEMANE - LTOLOSE. 


353 


ORDER  8.  FELDOLENIC.  BOII  EM  ARE— Continued. 


SUBRANG  4.  DOSODIC.  COVOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

ZrOo 

s 

0. 05 
none 

an  7. 5 
lc  18.3 
ne  27.8 

di  12.6 
wo  10.  3 
ol  4. 2 
am  6. 1 
mt  9. 3 
il  0.8 
ap  2. 6 

Below  Dr. Thornton’s, 
Magnet  Cove, 
Arkansas. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

B.  G.  S.  A.,  XI, 
p.  399,  1900. 

Ijolite. 

Complete  in  J. 
G.  IX,  p.  618, 
1901. 

Cl 

FeS.. 

SrO' 

Li20 

0.02 

0.89 

trace 

trace 

an  13. 1 
lc  8. 3 
ne  24. 1 

di  6. 8 
wo  11.8 
ol  8.4 
am  11.2 
mt  7.4 
jl  3.1 
ap  0. 8 

Baptist  Church, 
Magnet  Cove, 
Arkansas. 

J.  F.  Williams. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S.  1890. 
II,  p.  226,  1891. 

Nephelite- 
syenite 
(Cove  type). 

Biotite-ijolite, 

H.  S.  IV.,  B. 
G.  S.  A.,  XI, 
p.  400,  1900. 

so3 

Cl 

0.94 

none 

or  7. 8 
an  7. 2 
lc  12. 6 
ne  15. 9 
no  8.4 

di  31.4 
wo  2. 1 
mt  8. 8 
hm  1.6 

Martinsdale, 

Crazy  Mountains, 
Montana. 

Not  stated. 

J.  E.  Wolff, 

N.  Transc.  Surv., 
p.  10,  1885. 

Theralite. 

( Rosen - 
busch . ) 

an  11. 7 
lc  16.6 
ne  27. 0 

di  11.0 
ol  19.6 
am  8. 5 
mt  3.5 

Kronberg,  Schorbach, 
Hesse. 

II.  Wolff. 

H.  Wolff, 

Cf.  N.  V.  1891,  II, 
p.  279. 

Nephelite- 

basanite. 

Sum  high. 

Zr02 

0. 35 

an  9. 2 
lc  17.4 
ne  27. 5 

di  18.0 
wo  5. 7 
ol  1.9 
am  2. 8 
mt  3. 7 
il  6.2 
hm  4. 6 
ap  1. 7 

Etinde  Volcano, 
Kamerun,  Africa. 

M.  Dittrich. 

E.  Esch, 

Sb.  Berl.  Akad., 

1901,  p.  415. 

Nephelinite. 

so3 

Cl 

0. 47 

0. 37 

an  10.8 
lc  11.3 
ne  9. 1 
so  4.9 
no  4. 1 

di  32. 4 
wo  2. 9 
ol  0.9 
am  1 . 2 
mt  7. 0 
il  8.6 
hm  2.  5 
ap  2. 6 

Etinde  Volcano, 
Kamerun,  Africa. 

M.  Dittrich. 

E.  Esch, 

Sb.  Berl.  Akad., 

1901,  p.  299. 

Nephelinite. 

an  10.3 
lc  14.4 
ne  27.3 

di  4. 1 
ol  19. 9 
am  14. 5 
mt  9. 5 

Praya,  Cape  Verde 
Islands. 

F.  Kertscher. 

F.  Eigel, 

T.  M.  P.  M.,  XI, 
p.  98,  1890. 

Teschenite. 

SUBRANG  5.  PERSODIC. 

S 

trace 

or  1.1 
an  7. 5 
lc  3. 5 
ne  26. 4 

di  49.9 
ol  7. 2 
mt  1. 9 

Grenada,  West  Indies. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rocks  of  Grenada, 
London,  1896,  p.  10. 

Augite-andesite 
with  olivine. 

Analysis  does 
not  correspond 
with  descrip¬ 
tion. 

ORDER  9.  PERLENIC. 

FINNARE. 

SUBRANG  2.  DOPOTASSIC. 

MADUPOSE. 

so3 

Cl 

F 

Cr203 

C&jOa 

SrO 

0.58 

0.03 

0.47 

0. 07 
0.11 
0.33 

lc  37.1 
no  3. 5 

di  22. 6 
ol  11.7 
am  8.2 
il  2.7 
hm  5. 1 
ap  3. 7 
ft  0.7 

Pilot  Butte, 

Leucite  Hills, 

W  voming. 

W.  F.  Hille- 
brand. 

W.  Cross, 

A.  J.  S.,  IV,  p.  130, 
1897. 

Madupite. 

SUBRANG  4.  DOSODIC.  IIVAAROSE. 

1 

or  4. 4 
an  1. 9 
lc  9.6 
ne  44. 9 

di  25. 6 
wo  3. 7 
mt  4. 9 
il  1.7 
ap  3. 0 

Iivaara,  Kuuosamo, 
Finland. 

N.  Sahlbom. 

V.  Hackman, 

B.  C.  G.  Finl.,  No.  11, 
p.  17,  1900. 

Ijolite. 

Cl 

Cr203 

0. 37 
trace 

or  3. 3 
lc  H.3 
ne  27. 8 
so  5. 0 

ac  0. 9 
di  35.3 
ol  6. 7 
mt  7.4 

Bondi,  New  South 
Wales. 

J.  M.  Curran. 

J.  51.  Curran, 

Proc.  R.  Sue.  X.  S.  W., 
XXVIII,  p.  225, 1894. 

Basalt. 

Na20  high.  cf. 
G.  W.  Card 
Rec.  G.  S.  N, 
S.  W.,VII.Pt. 
2,  p.  95,  1902. 

SUBRANG  5.  PERSODIC. 

IJOLOSE. 

lc  8.7 
ne  46. 9 

ac  5. 1 
di  23.0 
ol  3.1 
am  3. 6 
il  1.8 
ap  5. 6 

Iiwaara,  Kuuosamo, 
Finland. 

N.  Sahlbom. 

V.  Hackman, 

B.  C.  G.  Finl.,  No.  11, 
p.  17,  1900. 

Ijolite. 

14-128 — No.  14—03 


23 


354 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  IV.  DOFEMANE.  SUBCLASS  I.  P  +  O  +  M  EXTREME  OVER  A. 


RANG  1.  PERMIRLIO.  MINNESOTASE.  SECTION  1.  PERMIRIC.  MINNESOTIASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h20+ 

H20- 

C0.2 

Ti02 

PA 

MnO 

BaO 

Sum  Sp.  gr. 

1 

50.04 

7.  93 

1.41 

14.  82 

18.58 

3.41 

0.  90 

0.21 

0.  87 

0.  82 

0.  27 

0. 10 

100.13 

A2.  II 

.844 

.077 

.009 

.206 

.465 

.061 

.013 

.002 

.010 

.002 

.002 

2 

40.  90 

14. 13 

0.  70 

14.  95 

15.  97 

2.32 

0.  35 

1.08 

1.20 

0.  07 

0.  02 

0.  03 

0.  93 

100.  09  3. 193 

Al.  I 

.783 

.138 

.  005 

.208 

.400 

.041 

.006 

.018 

.007 

— 

.013 

3 

51.  83 

7.  98 

1.48 

8.  28 

24. 10 

5.  20 

0.  35 

0.  00 

0.  29 

0.  29 

0.  09 

trace 

100.  43 

Al.  I 

.864 

.078 

.009 

.115 

.603 

.094 

.006 

.001 

.004 

.001 

— 

4 

53.  05 

8.91 

3. 20 

9.52 

14.  42 

0.  70 

0.  00 

0.  48 

0.  05 

1.77 

0.  09 

0.08 

99.  05  3.  09 

A2.  II 

.884 

.087 

.020 

.  133 

.361 

.121 

.011 

.005 

.022 

.  001 

.001 

CLASS  IV.  DOFEMANE. 


RANG  1.  PERMIRLIC.  SECTION  2.  DOMIRIC. 


1 

Al.  1 

48.  03 

.811 

5.32 

.  052 

2.91 

.018 

3.90 

.054 

21.  79 

.  545 

13.  04 

.233 

0.  34 

.005 

0.  23 

.002 

2.  81 

trace 

.006 

0.47 

.002 

0.  21 

.002 

0. 12 

trace 

100. 13 

RANG  1. 

PERMIRLIC.  SECTION  2 

.  DOMIRIC. 

1 

48.91 

8.  81 

1.04 

9.  52 

15. 19 

14.09 

0.  04 

0. 10 

0.52 

0.07 

0.  37 

trace 

0. 16 

100. 17 

Al.  I 

.815 

.086 

.007 

.133 

.380 

.262 

.010 

.001 

.005 

— 

.002 

2 

40.  00 

10.  01 

3.17 

5.  01 

14.  74 

10. 55 

1.31 

5. 14 

1.44 

0.73 

0.  21 

trace 

0.  32 

99.57 

Al.  I 

.768 

.098 

.020 

.  078 

.369 

.188 

.021 

.055 

.009 

.002 

— 

.002 

3 

42.  83 

10.  92 

4.  33 

8.  82 

14.  02 

13.  20 

3.  24 

0.  04 

1.80 

none 

0.05 

0.  39 

0.12 

100.  36 

A2.  II 

.714 

.107 

.027 

.  122 

.351 

.235 

.052 

.007 

.001 

.003 

.002 

4 

42.00 

12.18 

2.  07 

7.89 

11.47 

11.  29 

5.  10 

1.07 

3.  08 

1.93 

0.34 

100. 05 

2.  968 

Al.  I 

.701 

.119 

.017 

.110 

.  287 

.201 

.082 

.012 

.024 

.002 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  WEHRLASE.  SECTION  1.  PERMIRIC.  WEHRLIASE. 


1 

B3.  IV 

43.  70 

.728 

11.20 

.110 

3.  90 

.024 

6. 15 

.086 

25.  60 

.640 

7.07 

.127 

0.  52 

.008 

0.31 

.003 

2.  80 

101. 25 

RANG  1. 

PERMIRLIC. 

WEHRLASE.  SECTION  1. 

PERMIRIC.  WEHRLIASE. 

1 

48.  95 

5.69 

1.20 

12. 11 

23.  49 

5.  33 

1.58 

0.  79 

0. 18 

0.  81 

0. 12 

0.  08 

trace 

100.  54 

3.  37 

Al.  I 

.816 

.055 

.007 

.168 

.  587 

.094 

.026 

.009 

.010 

.001 

.001 

— 

9 

46. 13 

4.  69 

0.  73 

16.  87 

25.  17 

4.  41 

0.  08 

trace 

1.  38 

0.  73 

0.  07 

trace 

trace 

100.  63 

3.  35 

Al.  I 

.769 

.046 

.004 

.  234 

.629 

.078 

.001 

— 

.009 

— 

— 

— 

3 

46.0 

6.8 

3.0 

7.  5 

23.9 

8.  1 

0.8 

0.9 

2.4 

99.6 

3.15 

A3.  Ill 

.767 

.067 

.019 

.104 

.598 

.144 

.013 

.010 

4 

42.  87 

10. 93 

3.  44 

10. 14 

16.  27 

9.  11 

0.92 

0.  13 

2.  87 

0.  57 

2.  70 

trace 

trace 

trace 

99.  95 

2.  88 

A3.  Ill 

.  715 

.107 

.021 

.140 

.407 

.161 

.014 

.001 

— 

SALFEMANE - WEHRLOS  E. 


355 


ORDER  1.  PERPOLIC.  IIUNGARARE.  SECTION  E 


PERPYRIC.  MINNESOTIARE. 


SUBRANG  2.  DOMAGNESIC.  COOKOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst.  Reference. 

Author’s  name. 

Remarks. 

Cr203  0. 05 

or  1.1  hy  66.5 

New  Braintree, 

L.  G.  Eakins.  P>.  K.  Emerson, 

Wehrlite. 

ab  6. 8  ol  3. 4 
an  17. 2  mt  2. 1 

Massachusetts. 

B.  U.  S.  G.  S.,  148, 

il  1.5 

p.  77,  1897. 

Cr203  trace 

or  10.0  hy  57.5 

Gunflint  Lake, 

H.  N.  Stokes.  W.  S.  Bayley, 

Hypersthene- 

N  iO  0. 06 

ab  3. 1  oi  6. 0 
an  11. 4  mt  1. 2 

Cook  County, 

J.G.,  III,  p.  10,  1895. 

gabbro. 

C  7.5  il  1.1 

Minnesota. 

Cr203  0.  31 

or  0. 5  di  5. 1 

Meadow  and  Granite 

L.  G.  Eakins.  G.  P.  Merrill, 

Pyroxenite. 

Igneous? 

NiO  0.11 

ab  3. 1  hy  61. 1 

creeks,  Madison 

Pr.  U.  S.  Nat.  Mus., 

mt  2. 1 

County,  Montana. 

XVII,  p.  658,  1895. 

Q  8.6  di  11.1 

Eriyur,  South  Arc.ot, 

P.  Briihl.  T.  H.  Holland, 

Augite-norite. 

Nearly  in  sal- 

or  2.8  hy  42.8 
ab  5. 8  mt  4. 6 

India. 

Rec.  G.  S.  lnd. ,  XXX, 

femane. 

an  19. 7  il  3. 4 

p.  28,  1897. 

ORDER  1.  PERPOLIC.  HUNGARARE.  SECTION  2.  DOPYRIC. 

SUBRANG  1.  PERMAGNESIC.  BELCHEROSE. 


Cr203  0. 36 

or  1.1  di  41.7 

Belchertown, 

L.  G.  Eakins. 

B.  K.  Emerson, 

Cortlandite. 

ab  2.6  hy  21.9 
an  12. 5  ol  11. 7 

Massachusetts. 

M.  U.  S.  G.  S.,  XXIX, 

mt  5. 1 

p.  347,  1898. 

SUBRANG  2.  DOMAGNESIC. 


CO 

oo 

OhJ 

0. 15 
trace 

ab  5. 2  di  42. 0 
an  21.1  hy  16.2 
ol  12. 3 
mt  1. 6 
il  0.8 

Orange  Grove, 
Baltimore  County, 
Maryland. 

W.  F.  Hille- 
brand. 

G.  H.  Wiliams, 

15  A.  R.  U.  S.  G.  S., 
p.  674,  1895. 

Olivine-gabbro. 

so3 

Cl 

SrO 

0. 05 

0. 03 

0.20 

or  1.1  di  37.4 
an  6. 1  ol  17. 7 
lc  23.1  mt  4.6 
ne  6.0  il  1.2 

Shonkin  Creek, 
Highwood  Moun¬ 
tains.  Montana. 

E.  B.  Hurl  but. 

Weed  and  Pirsson, 

A.  J.  S.,  II. 
p.  321,  1896. 

Missourite. 

Near  albanose. 

s 

trace 

an  13. 3  di  41. 7 
lc  3.1  ol  20.0 
ne  14.8  mt  6.3 

Grenada,  West  Indies. 

J.  B.  Llarrison. 

J.  B.  Harrison, 

Rocks  of  Grenada, 
London,  1896,  p.  10. 

Olivine-basalt. 

Dried  at  100°. 

X 

s 

0. 88 

0. 09 

an  7.0  di  38.3 
lc  5. 2  ol  13. 9 
ne  23. 3  am  0. 5 
mt  3. 9 
il  3.7 

Hahn,  Habichtswald, 
Cassel,  Hesse- 
Nassau. 

P.  Jannasch. 

F.  Rinne, 

Sb.  Berl.  Akad., 

1889,  p.  1026. 

Limburgite. 

ORDER  1. 

PERPOLIC.  HUNGARARE.  SECTION  3.  PYROLIC.  HUNGARIARE. 

SUBRANG  1.  PERMAGNESIC. 

or  1.7  di  6.2 
ab  4.2  hy  15.6 
an  27. 5  ol  37.  3 
mt  5. 6 

Etang  de  PEstagnet, 
Pyrenees,  France. 

A.  Pisani. 

,A.  Lacroix, 

B.  S.  C.  G.  Fr.,  XI, 

No.  71,  p.  31, 1900. 

Peridotite. 

Sum  high. 

SUBRANG 

2.  DOMAGNESIC. 

WEHRLOSE. 

Cr2C>3 

NiO 

0.05 

0.16 

or  5. 0  di  16. 5 
ab  13.6  hy  18.5 
an  5.6  ol  37.6 
mt  1. 6 
il  1.5 

Red  Bluff,  Montana. 

L.  G.  Eakins. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 
XVII,  p.  652,  1895. 

W  ehrlite. 

s 

Cr203 

NiO 

0.24 

0. 04 

0.09 

ab  0,5  k  di  7.  6 
an  12. 5 i  ay  44. 8 
ol  30.4 
mt  0. 9 
il  1.2 

North  Meadow  Creek, 
Montana. 

L.  G.  Eakins. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 
XVII,  p.  655, 1895. 

Hornblende- 

picrite. 

Nearly  in  per- 
femane. 

Cr203 

0.2 

or  5. 6  di  22. 0 
ab  6.8  hy  10.3 
an  12. 2  ol  35.  7 
mt  4.4 

Loch  Garabal, 
Scotland. 

J.  H.  Player. 

Dakyns  and  Teall, 

Q.  J.  G.  S.,  XL VIII, 
p.  115,  1892. 

Peridotite? 

or  0. 6  di  15. 4 
ab  7. 3  hy  16. 0 
an  25. 6  ol  24. 1 
mt  4. 9 

Ty  Croes,  Anglesey, 
Wales. 

J.  A.  Phillips. 

T.  G.  Bonney, 

Q.  J.  G.  S.,  XXXIX, 
p.  254,  1883. 

Hornblende- 

picrite. 

Not  fresh. 

356 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  IV.  DOFEMANE— Continued. 

RANG  1.  J’ERMIRLIC.  WEHRLASE.  SECTION  2,  DOMIRIC. 


No. 

Si02 

A1A 

Fe,03 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

H20- 

N 

o 

o 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr.  | 

1 

44.99 

5.91 

3.  42 

8.30 

21.02 

8.  79 

0.  91 

0.  74 

3. 19 

0.  63 

trace 

0.  97 

0.  05 

trace 

99. 17 

Bl.  II 

.750 

.058 

.021 

.115 

.526 

.157 

.014 

.008 

.012 

— 

— 

9 

50.  44 

8. 18 

1.06 

6.  29 

17.63 

1 1 . 55 

2.  98 

0.50 

0.92 

0.  07 

0.21 

100.  31 

A2.  II 

.841 

.080 

.007 

.088 

.441 

.206 

.048 

.006 

.003 

3 

47.  75 

10.  56 

0.  74 

8.  34 

19.  09 

9.  62 

1.32 

0. 12 

2.  06 

0.  05 

0.37 

0.'03 

0. 10 

none 

100.  46 

Al.  I 

.796 

.104 

.004 

.115 

.477 

.171 

.021 

.001 

.005 

— 

.001 

— 

4 

48.  29 

10.00 

2.  93 

5.  46 

17.  22 

11.  80 

2.  78 

0.  45 

1.95 

100. 88 

A3.  Ill 

.805 

.098 

.018 

.076 

.431 

.210 

.045 

.005 

• 

5 

48. 15 

9.52 

2.  98 

5.  46 

17.42 

11.91 

2.  34 

0.  40 

2.  35 

100.  53 

A3.  Ill 

.803 

.093 

.019 

.076 

.436 

.212 

.038 

.004 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  CORTLANDTASE.  SECTION  1.  PERMIRIC.  CORTLANDTIASE. 


1 

Al.  I 

39.  20 

.653 

4.  60 

.1)45 

3.45 

.022 

6. 15 

.086 

31.  65 

.791 

3.  23 

.  057 

0.  42 

.006 

0. 14 

.001 

9.38 

0.50 

0.52 

.006 

trace 

0.  20 

.003 

100. 15 

RANG  1.  PERMIRLIC.  CORTLANDTASE.  SECTION  1. 

PERMIRIC.  CORTLANDTIASE. 

1 

A3.  Ill 

46.  03 

.767 

9.  27 

.091 

2.  72 

.017 

9.  94 

.139 

25.  04 

.626 

3.  53 

.062 

1.48 

.024 

0.  87 

.009 

0.  64 

0. 17 

.001 

0.  40 

.006 

100.  09 

• 

•  RANG  1. 

PERMIRLIC.  CORTLANDTASE.  SECTION  2.  DOMIRIC. 

1 

40.  31 

12.24 

5.  77 

10.  92 

S.  10 

12.12 

7.52 

1.08 

0.  29 

trace 

0.  89 

0.  45 

trace 

100.  69 

3.114 

A2.  II 

.672 

.120 

.036 

.151 

.227 

.216 

.121 

.012 

.011 

.003 

4° 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  LHERZASE.  SECTION  1.  PERMIRIC.  LHERZIASE. 


1 

A3.  Ill 

41.50 

.692 

6.  93 

.068 

2. 19 

.014 

6.69 

.093 

35. 90 

.898 

5.80 

.103 

1 

1.37 

.022 

0.30 

.003 

0.  32 

trace 

101.00 

RANG  1. 

PERMIRLIC. 

LHERZASE.  SECTION  1. 

PERMIRIC.  LHERZIASE. 

1 

39.  25 

5.39 

2.  60 

8.  90 

33.  72 

4.  55 

1.  18 

0.  60 

2.  83 

0.  77 

99.  79 

A3.  Ill 

.  654 

.053 

.016 

.124 

.843 

.081 

.019 

.006 

.010 

• 

RANG  1. 

PERMIRLIC.  LHERZASE.  SECTION  3.  CALCIMIRIC.  YENANZIA3E. 

1 

41.43 

9.80 

3.  28 

5. 15 

13.  40 

1 6.  62 

1.64 

7.40 

1.11 

0. 29 

none 

100. 12 

2.  758 

A2.  II 

.691 

.0% 

.021 

.072 

.335 

.2% 

.026 

.079 

.004 

— 

DOFEMANE - VENANZOSE. 


357 


ORDER  1.  PERPOLIC.  HUNGARARE.  SECTION  3.  PYROLIC.  HUNGARI ARE— Continued. 

SUBRANG  2.  DOMAGNESIC.  ROSSWEINOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Cr..08  0. 25 

or  4.4  di  26.8 

Crystal  Falls, 

H.  N.  Stokes. 

J.  M.  Clements, 

Nib  none 

ab  7.3  hy  12.8 
an  10. 0  ol  26. 9 

Michigan. 

J.  G.,  VI, 

lilt  4.9 

p.  386,  1898. 

il  1.8 

Cr208  0. 48 

or  3.3  di  40.2 

Knoxville,  California. 

W.  H.  Melville. 

G.  F.  Becker, 

ab  16.8  ol  25.3 

M.  U.  S.  G.  S.,  XIII, 

ne  4.0 

p.  101,  1888. 

Cr.O,  0. 24 

or  0.6  di  19.8 

Cathav  Hill, 

W.  F.  Hille- 

H.  W.  Turner, 

NiO  0. 07 

SrO  trace 

ab  11. 0  hv  16. 3 
an  22. 8  ol  25. 8 

Mariposa  County, 

brand. 

17  A.  R.  U.S.G.S.,I., 

LioO  trace 

mt  0.9 

California. 

p.  694,  1896. 

il  0.8 

or  2.8  di  35.7 

Etzdorf,  Rosswein, 

Sachsse  and 

Sachsse  and  Becker.  Cf. 

ab  13. 1  ol  24. 1 
an  13. 3  mt  4. 2 

Saxony. 

Becker. 

N.  J.,  1893,  II,  p.  503. 

ne  5.7 

or  2.2  di  35.4 

Etzdorf,  Rosswein, 

Sachsse  and 

Sachsse  and  Becker.  Cf. 

ab  14. 7  ol  24. 5 
an  14. 2  mt  4. 4 

Saxony. 

Becker. 

N.  J.,  1893,  II,  p.  503. 

ne  2.8 

Author’s  name.  Remarks 


Peridotite. 


Pseudo-diorite. 


Diabase? 


Gabbro. 


Gabbro. 


Also  in 
M.  r.  S.G.S., 
XXXVI, 
p.  259, 1899. 


ORDER  1.  PERPOLIC.  HUNGARARE.  SECTION  4.  DOMOLIC. 


SUBRANG  1.  PERMAGNESIC.  CORTLANDTOSE. 


Cr„03  0. 41 

Ni'O  0. 30 

LioO  trace 

or  0.6  di  4.4 
ab  3. 1  hy  16. 8 
an  10. 6  ol  47.  9 
mt  5. 1 
il  0.9 

Ilchester,  Howard 
County,  Maryland. 

W.  F.  Hille- 
brand. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  674,  1895. 

Cortlandtite. 

Not  fresh. 

SUBRANG  2.  DOMAGNESIC.  CUSTEROSE. 

or  5.0  hy  16.7 
ab  12.6  ol  44.3 
an  16. 1  mt  3.9 
ap  0.4 

Cottonwood  Gulch, 
Silver  Cliff,  Custer 
County,  Colorado. 

I  .  G.  Eakins. 

W.  Cross, 

Pr.  Colo.  Sci.  Soc.,  Il, 
p.  245,  1887. 

Peridotite. 

Also  in  17  A.  R. 
U.  S.  G.  S.,  II, 
p.  284,  1896. 

SUBRANG  3.  M  AGNESI  FERROUS. 

Cl  trace 

S  trace 

Cr203  trace 

lc  5. 2  nc  6. 0 
ne  30.7  di  6.8 
ol  26.0 
am  17.  7 
mt  5. 3 
il  1.7 
ap  1. 1 

Dreistelz,  Jthbnge- 
birge. 

H.  Lenk. 

H.  Lenk, 

Vh.  Ph.  Ges.  Wurzb., 
XXI,  p.  60,  1887. 

Nephelite- 

basalt. 

ORDER  1.  PERPOLIC.  HUNGARARE.  SECTION  5.  PEROLIC.  PYRENIARE. 

SUBRANG  3.  PERMAGNESIC.  LHERZOSE. 


Cr203  trace 

an  12.0  di  4.3 
lc  1.3  ol  69.3 
ne  6. 2  am  4. 0 
mt  3. 2 

Caussou,  Pyrenees. 

Brunet. 

A.  Lacroix, 
cf.  N.  J.,  1895,  II, 
p.  267. 

Lherzolite. 

Sum  high. 

SUBRANG  2.  DOMAGNESIC.  ARGEINOSE. 

an  7. 8  di  7. 3 
lc  2.6  ol  66.6 
ne  5. 4  am  1. 9 
mt  3. 7 
il  1.5 

Argein,  Pyrenees. 

A.  Pisani. 

A.  Lacroix, 

C.  R.,  VIII.  Cong.  G. 
Int.,  p.  833,  1901. 

Ilornblende- 

peridotite. 

SUBRANG  2.  DOMAGNESIC.  VENANZOSE. 

■ 

kp  25. 0  ac  4.2 
ne  4.8  ol  32.3 
am  29. 8 
mt  2.8 
il  0.6 

San  Venanzo, 

Umbria,  Italy. 

H.  Rosen  busch. 

H.  Rosenbusch, 

Sb.  Berl.  Akad.  1899, 
p.  113. 

Euktolite. 

( Venanzite.) 

Cf.  A.  J.  S.,VII, 
p.  399,  1899. 

358 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CLASS  IV.  DOFEMANE— Continued. 
RANG  1.  PERMIRLIC.  SECTION  2.  DOMIRIC. 


No. 

Si02 

ALA 

FeA 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

A3.  Ill 

40.2 

.670 

9.5 

.093 

9.7 

.060 

12.2 

.170 

8.0 

.200 

13.1 

.234 

0.8 

.013 

0.2 

.002 

0.5 

4.7 

.059 

0.  40 

.006 

99.  7 

3.  36 

RANG  1.  PERMIRLIC./  SECTION  3.  CALCIMIRIC.  BRANDBERGIASE. 


1 

43. 17 

9.  93 

8.  78 

6.  88 

6.  80 

20.  96 

1.77 

0.  16 

A3.  Ill 

.720 

.097 

.  055 

.096 

.170 

.374 

.029 

.002 

2 

45.  05 

6.  50 

3.  83 

7.69 

12.07 

18.82 

0. 94 

0.  78 

A3.  Ill 

.  751 

.064 

.024 

.107 

.302 

.336 

.015 

.009 

3 

39.  43 

10.  36 

13. 19 

3.  98 

5.  53 

15.  50 

4. 23 

2.  24 

A2.  II 

.657 

.  102 

.082 

.056 

.138 

.277 

.068 

.023 

0.  31 

1.56 

100.  30 

3.  28 

.019 

2. 40 

2.  65 

0.  15 

100.  88 

.033 

.001 

0.81 

2.  27 

2.  76 

trace 

100.  30 

3.058 

.  028 

.020 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  PAOLASE.  SECTION  1.  PERMIRIC.  VALBONNIASE. 


1 

A3.  Ill 

46.  40 

*.  773 

10.  80 

.106 

5.  90 

.036 

5.  60 

.078 

22.20 

.  555 

3.  72 

.066 

0.30 

.005 

1.21 

.013 

3.  85 

100.18 

RANG  1.  PERMIRLIC. 

PAOLASE.  SECTION  2. 

DOMIRIC. 

1 

47.41 

6.39 

7. 06 

4.  80 

15.34 

14.  32 

0.  69 

1.40 

2. 10 

100.  00 

3.30 

B3.  IV 

.790 

.063 

.044 

.  067 

.384 

.256 

.010 

.015 

15° 

2 

40.  42 

9.98 

9.83 

10.  67 

11.56 

10.  78 

1.26 

0.60 

1. 17 

0.  45 

2.51 

0.  63 

0.  25 

0.C5 

100.  20 

Al.  I 

.  674 

.098 

.061 

.148 

.289 

.193 

.020 

.006 

.031 

.004 

.004 

— 

3 

38.20 

9. 16 

6. 12 

5.89 

14.  69 

9.  93 

3.  44 

2.  20 

trace 

7.27 

trace 

99.  91 

2.  914 

A2.  II 

.637 

.090 

.038 

.082 

.347 

.177 

.055 

.024 

— 

.091 

— 

4 

42.  68 

9.  42 

11.55 

7.  23 

10.09 

13. 15 

2.  71 

1.  16 

1.06 

0.51 

1.29 

100.  85 

A2.  II 

.711 

.092 

.066 

.100 

.252 

.235 

.043 

.012 

.006 

.009 

5 

38.  08 

11.44 

7.  18 

6.  55 

12.  11 

13.  08 

2.  28 

1.24 

3.  98 

3. 15 

0.  54 

99.  73 

3.  071 

A2.  II 

.  635 

.112 

.045 

.091 

.303 

.234 

.037 

.014 

.039 

.004 

6 

39.90 

10.  02 

12.  88 

4.  09 

14.  84 

13.  28 

2.  48 

1.77 

0.  52 

trace 

0.  82 

trace 

100.  60 

3. 19 

A3.  Ill 

.665 

.098 

.080 

.057 

.371 

.237 

.040 

.020 

— 

.006 

7 

43.  76 

10.  90 

3.  49 

9.  82 

12.  76 

13.  80 

2.  21 

0.31 

1.00 

2.32 

0. 51 

0.  32 

101.  20 

B2.  Ill 

.729 

.107 

.022 

.137 

.319 

.  246 

.035 

.003 

.  029 

.004 

.005 

DOFEMANE— SR  3  OF  SEC. 


OF  PAOLASE. 


359 


9 


ORDER  2.  DOPOLIC.  SCOTARE.  SECTION  1.  PERPYRIC. 

SUBRANG  3.  M  AGNESI  FERROUS. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Q  0.9  di  34.9 
or  1.1  hy  10.2 
ab  6. 8  nit  13. 9 
an  21.  Til  9. 1 

Drain  an  Eidhne, 
Island  of  Skye, 
Scotland. 

.T.  II.  Player. 

Geikie  and  Teall, 

Q.  J.  G.  S.,  L.,  p.  653, 
1894. 

Gabbro,  “dark 
band.” 

SUBRANG  2.  DOMAGNESIC.  BRANPBERGOSE. 


or  1.1 
ab  2. 6 
an  18.3 
ne  6.8 

di  42. 2 
WO  13. 5 
mt  12.8 
il  2.9 

Burnt  Head, 
Monhegan  Island, 
Maine. 

E.  C.  E.  Lord. 

E.  C.  E.  Lord, 

A.  G.,  XX  VI,  p.  340, 
1900. 

Gabbro- 

pyroxenite. 

an  11.1 
lc  3.9 
ne  4. 3 

di  66. 6 
ol  4.0 
mt  5. 6 
il  6. 1 

Brandberget, 

Gran,  Norway. 

L.  Schmelck. 

W.  C.  Brogger, 

Q.  J.  G.  S.,  L.,  p.  31, 
1894. 

Pyroxenite. 

or  12.8 
ab  1.0 
an  3. 1 
ne  18. 7 

di  29.9 
wo  8. 3 
mt  6. 5 
il  4.2 
hm  8. 6 
ap  6.6 

Lobauer  Berg, 

Saxony. 

J.  Stock. 

J.  Stock, 

T.M.  P.  M.,  IX,  p.  466, 
1888. 

Nephelite- 

dolerite. 

Iron  oxides? 

ORDER  2.  DOPOLIC.  SCOTARE.  SECTION  2.  DOPYRIC.  PAOLIARE. 


SUBRANG  1.  PERMAGNESIC.  VALBONNOSE. 


or  7.2  hy  47.9 

Vallee  de  Valbonne, 

A.  Pisan i. 

A.  Lacroix, 

Micaceous  horn- 

ab  2.6  ol  9.3 
an  18.3  mt  8.4 

Pyrenees. 

B.  S.  C.  G.  Fr.,  XI, 

blendite. 

C  2. 2 

No.  71,  p.  31,  1900. 

SUBRANG  2.  DOMAGNESIC. 


S 

0. 49 

or 

8.3 

di 

47.9 

ab 

5.2 

hv 

6.  7 

an  10. 6 

ol 

8.6 

mt 

10.2 

NiO 

0.02 

or 

3.3 

di 

24.2 

SrO 

0.02 

ab 

10.5 

hv 

8.0 

Li.,0 

trace 

an  20. 0 

ol 

12.2 

mt 

13.1 

il 

4.8 

ap 

1.3 

Cr203 

3. 01 

or 

7. 8 

di 

30.1 

an 

3.1 

ol 

14.5 

lc 

4  4 

il 

9.5 

ne 

15.6 

cm 

4.4 

hm 

6.1 

Pf 

3.7 

or 

6.7 

di 

37.1 

ab 

11.5 

ol 

8.0 

an 

10.3 

mt 

15.3 

ne 

6.0 

il 

0.9 

ap 

3.0 

so3 

0.10 

an 

17.0 

di 

30.7 

lc 

6. 1 

ol 

11.9 

ne 

10.5 

am 

2.0 

mt 

10.4 

il 

6.0 

ap 

1.2 

an 

10.6 

di 

37.2 

lc 

8.7 

ol 

11.2 

ne 

11.  4 

am 

0.8 

mt 

13.2 

hm 

3.7 

ap 

1.8 

or 

1.7 

di 

36.8 

ab 

7.3 

ol 

18.5 

an 

19.2 

mt 

5.1 

ne 

6.0 

il 

4.5  | 

ap 

1.3 

• 

Montrose  Point, 
Cortiandt,  New 
York. 

W.  H.  Emerson. 

G.  H.  Williams, 

A.  J.  S.,  XXXI, 
p.  40,  1886. 

Augite- 

peridotite. 

Big  Timber  Creek, 
Crazy  Mountains, 
Montana. 

W.  F.  Hille- 
brand. 

J.  E.  Wolff, 

B.  U.  S.  G.  S.,  148, 
p.  144,  1897. 

Olivine-gabbro 

Howenegg,  Hegau, 
Baden. 

U.  Gruben- 
mann. 

U.  Grubenmann, 

In.  Diss.  Ziirich, 

1886,  p.  26. 

Melilite-basalt. 

Todtenkopfchen, 

Rhbngebirge. 

II.  Sommerlad. 

H.  Sommerlad, 

N.  J.  B.  B.,II,  p.  1552 
1882. 

Hornblende- 

basalt. 

Schafruhe, 

Rhbngebirge. 

Haefcke. 

H.  Proescholdt, 

Jb.  Pr.  G.  L-A., 

XIV,  p.  12,  1894. 

Nephelite- 

basalt. 

Lobauer  Berg, 

Saxony. 

.T.  Stock. 

J.  Stock, 

T.  M.  P.  M.,  IX, 
p.  433,  1888. 

Nephelite- 

basalt. 

Green  Mountain, 

San  Vicente, 

Cape  Verde  Islands. 

C.  v.  John. 

C.  v.  John, 

Jb.  G.  R-A.,  Wien, 
XLVI,  p.  284, 1896. 

Dolerite. 

Na20  by  differ¬ 
ence. 


Ignition  =  0.  89. 


In  Roth. 


Sum  high. 


360 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  IV.  DOFEMANE— Continued. 

RANG  1.  PERMIRLIC.  PAOLASE.  SECTION  3.  CALCIMIRIC.  PAOLIASE. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na,0 

K20 

H20-j- 

H,0— 

CO, 

Ti02 

FA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

Bl.  II 

36. 51 

.009 

8.  22 

.080 

8.  29 

.052 

3.31 

.046 

8.19 

.205 

18.  85 

.337 

2.10 

.034 

1.08 

.012 

1.40 

3.11 

.039 

trace 

99.  22 

9 

Al.  I 

38.  39 

.640 

7.  05 

.069 

9.07 

.057 

6. 17 

.086 

11.58 

.290 

19.01 

.339 

0.  74 

.012 

0.  75 

.008 

0.33 

0. 14 

0.  32 

4.54 

.  057 

0.  82' 

.006 

0.32 

.005 

trace 

99.  89 

3 

A2.  II 

38.  38 

.640 

6. 15 

.  060 

11.  70 

.073 

8. 14 

.113 

11.47 

.287 

18.  60 

.332 

0.  78 

.013 

0.  13 

.001 

0.  54 

0. 18 

None. 

4.32 

.054 

0.  17 

.001 

0. 16 

.002 

100.  72 

4 

A2.  II 

37.  62 

.627 

9.86 

.097 

4.  22 

.026 

5.  94 

.082 

8.  41 

.210 

15.  42 

.275 

3.  33 

.053 

2.32 

.024 

4.  41 

3.55 

2.  79- 

.  035 

2.  05 

.015 

- - - 

100.  84 

' 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  TEXASE.  SECTION  I.  PERMIRIC.  MARQUETTIASE. 


1 

Al.  I 

39.37 

.656 

4.  47 

.044 

4.  96 

.031 

9.13 

.126 

26.  53 

.663 

3.  70 

.066 

0.50 

.008 

0.  26 

.003 

7.08 

0.  87 

1.23 

0.  66 

.008 

0.17 

.001 

0. 12 

.002 

trace 

99.  94 

RANG 

1.  PERMIRLIC.  TEXASE.  SECTION  2. 

DOMIRIC.  UVALDIASE. 

1 

42.  66 

6.  26 

6.  89 

2.  78 

24.  64 

8.  02 

2.  88 

6.34 

100.  47 

A3.  Ill 

.711 

.061 

.043 

.039 

.616 

.143 

.047 

RANG  1.  PERMIRLIC.  TEXASE.  SECTION  2.  DOMIRlC.  UVALDIASE. 


1 

40.  32 

9.  46 

4.  75 

7.48 

18. 12 

10.  55 

2.  62 

1.10 

1.25 

0.  57 

* 

2.  66 

0.  68 

0.  25 

0.  06 

100.  09 

3. 148 

Al.  I 

.672 

.094 

.030 

.104 

.453 

.188 

.042 

.012 

.033 

.005 

.004 

i  ■ 

— 

19° 

2 

39.  92 

8.  60 

4.  40 

8.  00 

20. 17 

10.68 

1.91 

1.03 

1.45 

0.  43 

2.  70 

0.51 

0.  24 

0.  06 

100.  45 

3.  200 

Al.  I 

.665 

.084 

.027 

.ill 

.504 

.191 

.030 

.011 

.034 

.004 

.003 

— 

21°.  5 

3 

38.  87 

11.94 

4.  02 

6.00 

15.  24 

10.  87 

2.  59 

1.64 

trace 

4.  79 

trace 

99.  02 

2.  946 

B2.  Ill 

.648 

.117 

.025 

.083 

.381 

.194 

.042 

.017 

.060 

— 

4 

36.  53 

9.  91 

3.  84 

6.01 

18.  10 

10.31 

3.06 

1.-60 

trace 

8.  38 

trace 

100.  64 

2.  987 

A2.  II 

.609 

.097 

.024 

.083 

.453 

.184 

.049 

.017 

.105 

— 

DOF  EM  A  NE - UV  ALDOSE. 


361 


ORDER  2.  DOPOLIC.  SCOTARE.  SECTION  2.  DOPYRIC.  PAOLIARE— Continued. 

SUBRANG  2.  DOMAGNESIC.  l'AOLOSE. 


Inclusive. 


Norm. 


X 

2. 10 

mi 

9.5 

di 

21.8 

Cl 

0. 03 

lc 

5.2 

WO 

11.4 

FeSa 

6.03 

ne 

9.7 

ol 

7.3 

Sro 

trace 

am  10.  8 

mt 

1.9 

il 

5.9 

hm 

7.0 

pr 

6.0 

X 

0.24 

an 

13.6 

di 

40.7 

ZrO.. 

none 

lc 

3.5 

ol 

7.2 

S 

0. 42 

ne 

3.4 

am 

8.4 

mt 

7.2 

il 

8.5 

hm 

4.2 

np 

1.9 

an 

12.8 

di 

46.3 

lc 

0.4 

ol 

5.2 

ne 

3.7 

am 

7.2 

mt 

13.7 

il 

8.3 

hm 

2.2 

so3 

0.60 

an 

7.5 

di 

34.5 

Cl 

0.03 

lc 

10.5 

ol 

5.1 

s 

0. 06 

ne 

9.1 

am 

3.7 

no 

5.0 

mt 

6.0 

il 

5.2 

ap 

4.9 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks 

Magnet  Cove, 
Arkansas. 

J.  F.  Williams. 

J.  F.  Williams, 

A.  R.  Ark.  <  r.  S.,  1890, 
II,  p.  227,  1891. 

Nephelite- 
syenite,  dark 
( jaeupirang- 
ite). 

Not  fresh. 
Sum  low. 

Magnet  Cove, 
Arkansas. 

H.  S.  Washing¬ 
ton 

H.  S.  Washington, 

J.  G.,  IX,  p,  620, 1901. 

Jacupirangite. 

Jacupiranga, 

Sao  Paolo,  , 

Brazil. 

H.  S.  Washing¬ 
ton. 

H.  S.  Washington, 

J.  G.,  IX,  p.  620,  1901. 

Jacupirangite. 

Petersberg, 

Frankisehe  Alp, 
Bavaria. 

Not  stated. 

C.  W.  v.  Giimbel, 

Geog.  Besch.  Fr  Alp 
Kassel,  1891,  p.  569. 

Basalt. 

Not  fresh. 

ORDER  2.  DOPOLIC.  SCOTARE.  SECTION  3.  PYROLIC.  TEXIARE. 

SUBRANG  2.  DOMAGNESIC.  MARQUETTOSE. 


Cr203 

SrO 

0.68 

trace 

or  1. 7 
ab  4. 2 
an  9. 2 

di  7. 4 
hy  21.1 
ol  37. 5 
mt  7. 2 
il  1.2 
cm  1. 0 

Opin  Lake,  Marquette 
Region,  Michigan. 

W.  F.  Hille- 
brand. 

Van  Hise  and  Bavlev, 

15  A.  R.  U.  S.  G.  S., 
p.  511,  1895. 

Peridotite. 

Not  fresh. 

SUBRANG  1.  PERMAGNESIC. 

ab  11. 5 
an  3. 9 
ne  7. 1 

di  28.0 
ol  34.1 
mt  9. 7 

Supreya, 

N.  Ural  Mountains, 
Russia. 

Kultacheff. 

Loewinson-Lessing, 

G.  Sk.  Jushno-Sao. 
Dorpat,  1900,  p.  166. 

Picrite. 

Not  fresh. 

SUBRANG 

2.  DOMAGNESIC. 

UVALDOSE. 

I 

ZrO.) 

so3‘ 

Cl 

F 

S 

NiO 

SrO 

none 

0. 03 

0. 05 

0. 04 

0.01 

0. 06 

0. 03 

or  3. 3 
an  11. 1 
lc  2.6 
ne  11.9 

di  29.3 
ol  26. 2 
mt  7. 0 
il  5. 1 
ap  1. 6 

Tom  Munn’s  Hill, 
Uvalde  County, 
Texas. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  62,  1900. 

Nephelite- 

basalt. 

ZrOo 

Cl 

F 

S 

Cr203 

v?o3 

NiO 

SrO 

none 

trace 

0.07 

trace 

0.14 

0. 04 

0.06 

0.04 

an  12. 0 
lc  4.9 
ne  8. 5 

di  24. 6 
ol  32. 1 
am  2.  4 
mt  6. 3 
il  5. 1 
ap  1.2 

Black  Mountain, 
Uvalde  County, 
Texas. 

W.  F.  Hille- 
brand. 

W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  63,  1900. 

Nephelite- 

basalt. 

Cr..03 

3. 06 

an  16. 1 
lc  7.4 
ne  11. 9 

di  25. 0 
ol  18. 5 
am  2.0 
mt  1. 2 
il  8.9 
cm  4.5 
hm  3.2 

Hohenhowen,  Hegau, 
Baden. 

U.  Gruben- 
mann. 

U.  Grubenmann, 

In.  Diss.  Zurich, 

1886,  p.  31. 

Melilite-basalt. 

t 

Sum  low. 

Ignit.  =  2.  82. 

Cr303 

2.90 

an  8. 6 
lc  7. 4 
ne  13. 9 

di  22.0 
ol  24. 6 
pf  5.6 
il  9. 9 
cm  4.3 
hm  3. 8 

Wartenberg,  Hegau, 
Baden. 

U.  Gruben- 
mann. 

U.  Grubenmann, 

In.  Diss.  Zurich, 

1886,  p.  20. 

Melilite-basalt. 

Ignit.  =  2.  47. 

302 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


CLASS  IV.  DOFEMANE — Continued. 

RANG  1.  PERMIRLIC.  TEXASE.  SECTION  2.  DOMIRIC.  UVALDIASE. 


No. 

SiOjj 

ALjOj 

Fe-A 

FeO 

MgO 

CaO 

Na.20 

k2o 

h2o+ 

H,0- 

1  O 

o 

1C 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

5 

37.  98 

9.30 

5.  96 

5.  86 

17. 13 

10.  38 

3.50 

2.  03 

2.  74 

0.  36 

2.02 

0.  31 

trace 

100. 15 

3.  072 

Al.  I 

.  633 

.091 

.037 

.081 

.428 

.168 

.  056 

.021 

.025 

.002 

— 

17° 

6 

39.47 

11.26 

8.74 

4.  98 

14.  33 

12.  08 

5.  04 

1.86 

0.63 

1.56 

0.99 

trrce 

100.94 

2.  896 

B2.  Ill 

.658 

.110 

.054 

.070 

.358 

.216 

.080 

.  020 

.020 

..  007 

— 

7 

42.  58 

9.58 

4.97 

10.  22 

16.97 

11.54 

2.01 

0.54 

1.04 

0.  94 

0.41 

0.  25 

101.05 

B2.  II 

.710 

.094 

.031 

.141 

.424 

.206 

.032 

.  0C6 

.  C12 

.003 

.004 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  CASSELASE.  SECTION  1.  PERMIRIC. 


1 

38.  78 

6.  85 

8.  83 

1.99 

26.  34 

3.  88 

0.  78 

2.56 

7.  85 

L  95 

0. 14 

0.  89 

100.  84 

2.  728 

to 

B2.  Ill 

.646 

.067 

.055 

.028 

.654 

.070 

.013 

.027 

.oil 

2. 651 

2 

38.  62 

4.  71 

8.  72 

4.08 

32.  32 

3.97 

0. 17 

0.  20 

6.  46 

• 

0.60 

trace 

100.  28 

2.  931 

A2.  11 

.644 

.046 

.054 

.057 

.808 

.071 

.003 

.002 

.007 

— 

RANG  1.  PERMIRLIC.  CASSELASE.  SECTION  1.  PERMIRIC. 


1 

A2.  II 

40.  12 

.669 

7.  76 

.076 

7.35 

.046 

8.66 

.121 

23.  69 

.592 

6.  53 

.116 

1.20 

.018 

0.  53 

.006 

4.  03 

trace 

o 

1  ^ 

0. 18 

.001 

100.  62 

2.988 

RANG  1. 

PERMIRLIC. 

CASSELASE.  SECTION  2. 

DOMIRIC.  CASSELIASE. 

1 

33.  84 

5.  88 

7. 04 

5.  16 

22.96 

9.  46 

0.  33 

2.  04 

7.  50 

0.  68 

0.  43 

3.  78 

0.  89 

0. 16 

0.  06 

100. 54 

Al.  I 

.  564 

.058 

.044 

.072 

.574 

.169 

.005 

.022 

.047 

.006 

.002 

RANG  1. 

PERMIRLIC. 

CASSELASE.  SECTION  2. 

DOMIRIC.  CASSELIASE. 

1 

37.  96 

10. 14 

3.69 

7.59 

14.69 

16.  28 

2.  18 

0.  69 

1.  82 

0.  39 

2.93 

1. 13 

0.  22 

0.  06 

100.. 13 

3. 150 

Al.  I 

.  633 

.099 

.023 

.106 

.367 

.291 

.035 

.007 

.035 

.008 

.003 

— 

20°.  5 

2 

39. 16. 

10.  06 

6.  54 

7.71 

13.  74 

15.  30 

CO 

CO 

1.46 

1.55 

0.  58 

1.52 

0.  75 

0. 11 

100.  86 

A2.  II 

.  653 

.099 

.041 

.107 

.344 

• 

.273 

.039 

.016 

.019 

.  005 

.002 

1 


CLASS  IV.  DOFEMANE. 


RANG  1.  PERMIRLIC.  SECTION  1. 


34.  98 

10.  80 

1.42 

21.  33 

19.  30 

0.  43 

0. 17 

5.  42 

.583 

.106 

.009 

.296 

.483 

.007 

.003 

.  058 

PERMIRIC.  KALTENIASE. 


1.28 

5.  18 

100.31 

3.  276 

.  0l>3 

A3.  Ill 


DOFEMANE - KALTENOSE. 


363 


ORDER  2.  DOPOLIC.  SCOTARE.  SECTION  3.  PYROLIC.  TEXIARE — Continued. 

SUBRANG  2.  DOMAGNESIC  UVALDOSE— Continued. 


Inclusive. 

Norm. 

X  2. 40 

an 

3.9 

di 

21.6 

S  0.09 

lc 

9.2 

Ol 

25. 6 

SrO  truce 

ne 

15. 9 

am 

4.9 

mt 

8.6 

il 

3.9 

ap 

0.7 

an 

2.8 

di 

22.7 

lc 

8.7 

ol 

17.7 

ne 

22.  7 

am 

8.1 

rat 

12.5 

il 

3.1 

ap 

2. 2 

or 

3.3 

di 

35.5 

ab 

4.7 

ol 

27.  7 

an 

10.0 

mt 

7.2 

ne 

G.  5 

il 

1.8 

ap 

1.0 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Hohenberg,  Bi'ihne, 
Westphalia. 

Biltz. 

F.  Rinne, 

Sb.  Berl.  Akad., 

1891,  p.  988. 

Melilite- 

nephelite 

basalt. 

Schafberg  Plateau, 
Lobauer  Berg, 
Saxony. 

J.  Stock. 

J.  Stock, 

T.  M.  P.  M.,  IX, 
p.  466,  1888. 

Nephelite- 

basalt. 

Mindello,  St.  Vicente, 
Cape  Verde  Islands. 

C.  v.  John. 

C.  v.  John, 

.Tb.  G.  R-A.  Wien., 
XLVI,  p.  283,  1896. 

Dolerite. 

Remarks. 


Sum  high. 


ORDER  2.  DOPOLIC.  SCOTARE.  SECTION  4.  DOMOLIC. 


SUBRANG  1.  PERMAGNESIC. 


or  15. 0  di  8. 9 
ab  1. 6  .  ol  42. 8 
an  7. 5  mt  6. 5 
ne  2.8  il  1.7 
hm  4.3 

Murfreesboro,  Pike 
County,  Arkansas. 

R.  N.  Brackett. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S.,  1890, 
p.  383,  1891. 

Peridotite. 

Not  fresh. 

Cr203  0. 43 

or  1.1  di  6.5 
ab  1. 6  by  14. 6 
an  11.4  ol  42.9 
mt  13. 4 

Ehrsberg,  Schwarz  - 
wald,  Baden. 

J.  H.  Kloos. 

J.  H.  Kloos, 

N.  J.  B.  B.,  Ill,  p.  57, 
1885. 

Pierite. 

Not  fresh. 

SUBRANG  2.  DOMAGNESIC. 


Cl 

trace 

or  3.3 

di 

14.3 

FeS., 

0.20 

ab  9. 4 

hy 

4.6 

CuO 

trace 

an  14.  5 

ol 

40.9 

mt 

10.7 

Newton  Bushel,  Dev¬ 
onshire,  England. 


Iv.  Busz. 


K.  Busz, 

N.  J.,  1895,  I,  p.  74. 


Paleopierite. 


Quite  fresh. 


SUBRANG  1.  PERMAGNESIC. 


Cl 

0.05 

an  8. 6  di  7. 7 

Flanarv  dike,  Crit- 

W.  F.  Hille- 

J.  S.  Diller, 

Mica-peridotite. 

Not  fresh. 

F 

Cr.,03 

NiO 

CoO 

6. 18 

0.10 

trace 

lc  9. 6  ol  37. 6 
ne  1. 4  am  8. 5 
mt  6. 0 
il  7.1 
hm  2.9 
ap  1.9 

tenden  County, 
Kentucky. 

brand. 

A.  J.  S.,  XLI V,  p.288, 
1892. 

SUBRANG  2.  DOMAGNESIC.  CASSELOSE. 


Zr02 

none 

an 

18.6 

di 

13.5 

so3 

0.03 

lc 

3.1 

nl 

26.1 

F 

0.07 

ne 

9.9 

am 

13.8 

S 

0.04 

mt 

5.3 

Cr203 

0.08 

il 

4.4 

v.o3 

0.05 

ap 

2.6 

NiO 

0.04 

SrO 

0. 05 

CtoOr 

trace 

an 

12.2 

di 

16.7 

lc 

7.0 

ol 

23. 3 

ne 

11.1 

am 

13.7 

mt 

9.5 

il 

2.8 

ap 

1.8 

Near  Uvalde, 
Uvalde  County. 
Texas. 


Oberleinleiter, 
Franken  Jura, 
Bavaria. 


W.  F.  Hille- 
brand. 


Not  stated. 


W.  Cross, 

B.  U.  S.  G.  S.,  168, 
p.  63,  1900. 


Leppla  and  Schwager, 
Geog.  Jheft.  Cassel, 
I,  p.  69,  1888. 


Nephelite- 

melilite- 

basalt. 


Nephelite- 

basalt. 


ORDER  2.  DOPOLIC.  SCOTARE.  SECTION  5.  PEROLIC. 

SUBRANG  3.  MAGNESIFERROUS.  KALTENOSE. 


S03  trace 

an  2. 2 

ol  56. 6 

Kaltenthal, 

Hampe. 

M.  Koch, 

Biotite- 

lc  20.1 
kp  3.8 
ne  1.6 

mt  2. 1 
il  9.7 

Harzburg, 

Harz  Mountains. 

Z.  D.  (i.  G.,  XLI. 
p.  165,  1889. 

peridotite. 

C  3.8 

CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


3<)4 


CLASS  IV.  DOFEMANE — Continued. 

RANG  1.  PERMIRLIC.  BERGENASE.  SECTION  1.  PERMIRIC.  BERGENIASE. 


No. 

Si02 

A1.A 

Fe-A 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20— 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

i 

A2.  II 

31.59 

.527 

8.  54 

.084 

2.  36 

.015 

24.  52 

.340 

10.  70 

.207 

2.  25 

.040. 

1.03 

.016 

0. 15 

.002 

n.  d. 

18.  49 

.231 

0.  02 

99.  65 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  SECTION  2.  DOMIRIC. 


1 

A2.  II 

35.  84 

.597 

10.  48 

.103 

7.  25 

.045 

6.62 

.092 

12.  95 

.324 

10.  90 

.194 

3.  53 

.056 

1.51 

.016 

8.  85 

.111 

trace 

100. 77 

3.  051 

RANG  1.  PERMIRLIC.  SECTION  3. 

CALCIMIRIC. 

AVEZACIASE. 

1 

31.80 

10.  96 

12.23 

9.  79 

8.40 

17.  34 

0.  66 

0.  27 

1.50 

3.25 

3.32 

99.  46 

A2.  II 

.530 

.108 

.076 

.137 

.210 

.310 

.011 

.003 

.041 

.023 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  SECTION  2.  DOMIRIC. 


1 

35.  56 

11.  25 

6.  62 

6.  67 

14.  68 

8.99 

3.86 

1.  75 

8.  03 

trace 

100. 07 

3.  046 

A2.  II 

.593 

110 

.041 

.093 

.367 

.177 

.062 

.019 

.100 

■ 

CLASS  IV.  DOFEMANE. 

RANG  1.  PREMIRLIC.  ADIRONDACKASE.  SECTION  1.  PREMIRIC.  ADIRONDACKIASE. 


1 

21.42 

7.03 

30.34 

22.81 

6.92 

3.59 

0.  53 

0.41 

0.  95 

trace 

5.  21 

0. 14 

trace 

99.81 

Al.  I 

.  357 

.069 

.190 

.317 

.173 

.064 

.009 

.004 

.  065 

.001 

— 

2 

11.73 

6.  46 

30.  68 

27.  92 

3.  35 

3.  95 

0.50 

0.  26 

0.  64 

0.  32 

12.  31 

0.82 

99.19 

4. 138 

Al.  I 

.196 

.063 

.192 

.388 

.084 

.071 

.008 

.003 

*  .154 

.006 

CLASS  IV.  DOFEMANE. 

RANG  1.  PERMIRLIC.  CHAMPLAINASE.  SECTION  1.  PREMIRIC.  CHAM  PLAIN  I ASE. 


1 

17.90 

10.  23 

15.  85 

27.  95 

6. 04 

2.  86 

n.  cl. 

n.  d. 

1.33 

0. 10 

15.  66 

D.  04 

trace 

99. 15 

4. 138 

A2.  II 

.298 

.100 

.099 

.389 

.151 

.051 

— 

— 

.196 

— 

— 

2 

13.  35 

8.  75 

20.  35 

28.  82 

6.  63 

2. 15 

n.  d. 

n.  d. 

1.68 

0.17 

16.  45 

0.  02 

99.  62 

A2.  II 

.223 

.086 

.127 

.400 

.166 

.039 

— 

— 

.206 

— 

DOFEMANE - CH  AMPLAINORE. 


305 


ORDER  3. 


POLMITIC.  SVERIGARE.  SECTION  1.  PERPYRIC. 


BERG  ENT  A  R  E. 


SUBRANG  3. 

MAGNESIFERROUS.  BERGENOSE. 

Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

or  1. 1 
nb  8.4 
an  11.1 
C  2.7 

hv  34.6 
ol  3.8 
mt  3.5 
il  35. 1 

Storgang, 

Soggendal, 

Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 
1896,  No.  5,  p.  165. 

Ilmenite-norite. 

ORDER  3.  POLMITIC. 

SVERIGARE. 

SECTION  2.  DOPYRIC. 

SUBRANG  '2.  DOMAGNESIC. 

Cr.,03 

2.84 

or  2.2 
an  8. 6 
!c  5:2 
ne  13.  9 

di  27. 2 
ol  13. 8 
cm  4. 1 
il  11.4 
pf  5. 0 
hni  7. 3 

Randen, 

Hegau,  Baden. 

U.  Gruben- 
mann. 

U.  Grubenmann, 

In.  Diss.  Zurich. , 

1886,  p.  23. 

Melilite-basalt. 

Ignit.— 1.  92. 

SUB  RANG  3. 

MAGNESIFERROUS.  AVEZACOSE. 

an  26. 1 
lc  1.3 
ne  3. 1 

di  26. 2 
ol  8. 2 
am  2. 0 
mt  17.  6 
il  6. 2 
ap  7. 6 

Avezac-Prat, 

Pyrenees,  France. 

A.  Pisani. 

A.  Lacroix, 

C.R.,  VIII.  Cong.  G., 
p.  832,  1901. 

Avezacite. 

ORDER  3.  POLMITIC. 

SVERIGARE. 

SECTION  4.  DOMOLIC. 

SUBRANG  2.  DOMAGNESIC. 

Cr»03 

2. 66 

an  8. 1 
lc  8.3 
ne  17. 6 

di  16.6 
ol  20. 3 
am  4. 9 
cm  4. 0 
il  11.6 
pf  3. 2 
hm  6. 6 

Hohenstoffeln, 

Hegau,  Baden. 

U.  Gruben- 
mann. 

LT.  Grubenmann, 

In.  Diss.  Zurich, 

1886,  p.  35. 

Melilite-basalt. 

Ignit.=l.  72 

ORDER  4.  DOMITIC.  ADIRONDACKARE.  SUBORDER  2.  DOHEMIC.  ADIRONDACKORE. 

SUBR  4.NG  4.  DOFERROUS. 

Cl 

s 

Cr.,03 

Org 

0.42 

0. 04 

none 

trace 

or  2.2 
ab  4.7 
an  15. 6 

di  1.8 
hy  8. 0 
ol  12. 0 
mt  44. 0 
il  10.0 

Elizabethtown, 

Essex  County, 

New  York. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

19  A.  R.  U.  S.  G.  S., 
Ill,  p.  408,  1899. 

Titaniferous 
iron  ore. 

Cl 

F 

S 

V203 

Org 

0.12 

trace 

0.04 

0.04 

0.05 

an  14. 5 
lc  1.3 
ne  2. 3 

ol  10. 6 
mt  44. 5 
il  23. 7 
ap  1. 9 

Lincoln  Pond, 

Essex  County, 

New  York. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

19  A.  R.  U.  S.  G.  S., 
Ill,  p.  407,  1899. 

Titaniferous 

Iron  ore. 

Sum  low. 

ORDER 

4.  DOMITIC.  ADIRONDACKARE.  SUBORDER  3.  TILHEMIC.  CHAMPLAI^ORI 

SUBRANG  4.  DOFERROUS. 

S 

Cr203 

v»o3 

0.14 

0.51 

0.55 

an  15. 2 

C  6.0 

hy  16.0 
ol  8. 8 
mt  23.  0 
il  30. 1 

Split  Rock  mine, 

Essex  County, 

New  York. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

19  A.  R.  U.  S.  G.  S., 
Ill,  p.  402,  1899. 

Titaniferous 
iron  ore. 

Sum  low. 
Alkalies  not 
determined. 

Cl 

s 

Cr„03 

v»o3 

Org 

trace 

0.09 

0.55 

0.61 

trace 

an  10. 8 

C  4.8 

hy  5. 7 
ol  14.8 
mt  29.5 
il  31.0 

Elizabethtown, 

Essex  County, 

New  York. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

19  A.  R.  U.  S.  G.  S., 
Ill,  p.  405,  1899. 

Titaniferous 
iron  ore. 

Alkalies  not 
determined. 

CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


360 


CLASS  V.  PERFEMANE.  SUBCLASS  I.  P+O+M  EXTREME  OVER  A. 

RANG  1.  PERMIRLIC.  WEBSTERASE.  SECTION  1.  PERMIRIC.  MARICIASE. 


No. 

SA 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

H„0+ 

H20 

co2 

Ti02 

P-A 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

51.94 

2.  53 

2.  88 

9.38 

25.  97 

3.  60 

none 

none 

2.  82 

none 

none 

trace 

100. 07 

Al.  I 

.805 

.024 

.012 

.131 

.049 

.004 

— 

— 

— 

— 

— 

2 

50. 10 

2.00 

2.  38 

8.  68 

26.  85 

5.  06 

none 

none 

4. 16 

none 

none 

0.  29 

100. 14 

Al.  I 

.835 

.020 

.015 

.121 

.071 

.090 

— 

— 

— 

— 

.004 

3 

55.  23 

2.  08 

3.94 

6.  25 

29.29 

1.68 

1. 12 

0.  44 

100. 03 

3.297 

A2.  II 

.921 

.021 

.  025 

.087 

.  732 

.030 

.000 

RANG  1.  PERMIRLIC.  WEBSTERASE.  SECTION  2.  DOMIRIC.  WEBSTERIASE. 


1 

53.  98 

1.32 

1.41 

3.  90 

22.  59 

15.  47 

n.  d. 

n.  d. 

0.  83 

0.09 

0.15 

trace 

0.  21 

100. 48 

3.  301 

Al.  I 

.900 

.011 

.009 

.054 

.  565 

.277 

.002 

— 

.003 

2 

52. 55 

2.  71 

1.27 

4.  90 

20.  39 

16.  52 

0. 

27 

1.09 

0.14 

trace 

0.  24 

100.  52 

3.  304 

A2.  II 

.  876 

.  022 

.008 

.068 

.510 

.295 

.002 

— 

.003 

3 

55. 14 

0.  66 

3. 48 

4.  73 

26.  66 

8.39 

0.30 

none 

0.  38 

trace 

0.  23 

0. 03 

100. 36 

Al.  I 

.919 

.005 

.  022 

.  065 

.  667 

.150 

.005 

— 

- - 

.002 

— 

RANG  1.  PERMIRLIC.  WEBSTERASE.  SECTION  2.  DOMIRIC.  WEBSTERIASE. 


1 

53.  22 

3. 14 

7. 95 

20.09 

14.  44 

trace 

trace 

0.  98 

none 

0. 11 

100.  42 

Al.  I 

.887 

.031 

.in 

.502 

.258 

— 

— 

.002 

2 

53.  21 

1.94 

1.44 

7.92 

20.  78 

13. 12 

0. 11 

0. 07 

0.  87 

0. 14 

0. 10 

0.  26 

trace 

0.  22 

none 

100.  47 

Al.  I 

.887 

.017 

.009 

.110 

.  520 

.234 

.002 

.001 

.003 

— 

.003 

— 

3 

53.  25 

2.  80 

0.  69 

5.  93 

19.91 

16.  22 

0. 19 

trace 

0.  24 

0.  05 

0.09 

99.98 

A2.  II 

.888 

.026 

.004 

.082 

.498 

.289 

.003 

— 

.001 

CLASS  V.  PERFEMANE. 

RANG  1.  PERMIRLIC.  BALTIMORASE.  SECTION  1.  PERMIRIC. 


1 

49.42 

3.  37 

1.30 

5.  75 

34.  97 

2.  11 

— 

1.84 

0.  76 

- 

99.68 

A3.  Ill 

.824 

.032 

.008 

.080 

.874 

.038 

RANG  1.  PERMIRLIC.  BALTIMORASE.  SECTION  2.  DOMIRIC.  BALTIMORIASE. 


1 

• 

Al.  I 

43.  87 

.731 

1.64 

.016 

8.  94 

.  055 

2.60 

.036 

27.32 

.683 

6.  29 

.112 

0. 

.008 

50 

7.  64 

1.08 

0.  12 

.002 

trace 

0.  19 

.003 

100.  63 

3.  022 

RANG  1.  PERMIRLIC.  BALTIMORASE.  SECTION  2 

DOMIRIC.  BALTIMORIASE 

• 

1 

50.  80 

3.  40 

1.39 

8.11 

22.  77 

12.  31 

trace 

trace 

0.  52 

none 

trace 

0.17 

100. 03 

3.  318 

Al.  I 

.843 

.  033 

.009 

.112 

.569 

.219 

— 

— 

— 

— 

.002 

DOFEMANE - BALTIMOROSE. 


367 


ORDER  1.  PERPOLIC.  MAORARE. 


SECTION  1.  PERPYRIC.  CAROLINIARE. 


SUBRANG  1.  PERMAGNESIC.  MARICOSE. 


Inclusive. 

Norm. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

Cl 

Cr203 

0.19 

0.16 

0.60 

Q  0. 6  di  8. 9 
an  6.7  hv  76.4 
nit  2. 8 

Johnny  Cake  Road, 
Baltimore  County, 
Maryland. 

J.  E.  Whitfield. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  1 48, 
p.  83,  1897. 

Pyroxenite. 

“Altered.” 

S?3 

Cr;03 

trace 

0. 26 

0.36 

an  5.6  di  15.4 
hv  63. 1 
oi  7. 6 
mt  3.5 

Q  3.7  di  2.0 
an  5.8  hy  79.6 
mt  5. 8 
il  0.9 

Johnny  Cake  Road, 
Baltimore  County, 
Maryland. 

Central  Marico  Dis¬ 
trict,  Transvaal, 
South  Africa. 

J.  E.  Whitfield. 

J.  A.  L.  Hen¬ 
derson. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  148, 
p.  83,  1897. 

J.  A.  L.  Henderson, 

In.  Diss.  Leipzig, 
p.  39,  1898. 

Pyroxenite. 

Enstatite- 

pyroxenite. 

“Altered.” 

SUBRANG  1.  PERMAGNESIC.  WEBSTEROSE. 


Cr.,03 

0.53 

an 

3.1 

di 

58.3 

NiO 

trace 

hv 

35.0 

mt 

2.1 

Cr,03 

0. 44 

ab 

1.6 

di 

60.7 

an 

5.3 

hv 

29.8 

mt 

1.9 

Cr.,03 

0.25 

Q 

1.7 

di 

32.7  j 

Nib 

0. 11 

ab 

2.6 

hv 

57. 1 

mt 

5.1 

1 

Hebbville, 
n.  Baltimore, 
Maryland. 

T.  M.  Chatard. 

G.  H.  Williams, 

A.  G.,  VI,  p.  42,  1890. 

Websterite. 

Complete  in 

B.  U.  S.  G.  S. , 
148, p.84,1897. 

Hebbville, 
n.  Baltimore, 
Maryland. 

T.  M.  Chatard. 

G.  PI.  Williams, 

A.  G.,  VI,  p.  42,  1890. 

Websterite. 

Complete  in 

B.  U.  S.  G.  S., 
148, p.84,1897. 

Webster,  North  Caro¬ 
lina. 

E.  A.  Schneider. 

G.  H.  Williams, 

A.  G.,  VI,  p.  44,  1890. 

Websterite. 

Complete  in 

B.  U.  S.  G.  S., 
148, p.92,1897. 

SUBRANG  2.  DOMAGNESIC.  CECILOSE. 


S03  trace 

an  8.6  di  50.2 

Dogwood  Road, 

J.  E.  Whitfield. 

G.  H.  Williams, 

Pyroxenite. 

“Altered.” 

Cl  0.26 

Cr.>03  0. 23 

hy  37.8 
ol  2  2 

Baltimore  County, 

B.  U.  S.  G.  S.,  148, 

Maryland. 

p.  83,  1897. 

Zr02  trace 

or  0. 6  di  48. 9 

Oakwood, 

W.  F.  Hille- 

A.  G.  Leonard, 

Websterite. 

FeSo  0. 03 

Cr.>03  0. 20 

ab  1.0  hy  41.4 
an  3. 2  nit  2. 1 

Cecil  County, 

brand. 

B.  U.  S.  G.  S.,  168, 

Vo‘03“  0. 03 

il  0.5 

Maryland. 

p.  43,  1900. 

NiO  0. 03 

SrO  none 

Cr.03  0. 54 

ab  1.6  di  58.9 

Bagiev  Creek, 

W.  H.  Melville. 

W.  H.  Melville, 

Pyroxenite. 

NiO  0.07 

an  6.4  hy  28.8 
nl  ?  K 

Mount  Diablo, 

B.  G.  S.  A.,  II, 

mt  0. 9 

California. 

p.  406,  1891. 

ORDER  1.  PERPOLIC.  MAORARE.  SECTION  2.  DOPYRIC.  MARYLANDIARE. 


SUBRANG  1.  PERMAGNESIC. 


NiO  0. 16 

an  8.9  di  1.3 

Gaggio  Montano, 

P.  E.  Y.  de 

P.  E.  V.  de  Regny, 

Norite. 

Alkalies? 

hy  57. 2 
ol  27. 6 

Bologna,  Italy. 

Regny. 

cf.  N.  J.,  1900,  II, 

mt  1. 9 

p.  397. 

SUBRANG  1.  PERMAGNESIC. 


Cr.03  0. 44 

ab  4. 2  di  22. 6 

Johnnv  Cake  Road, 

T.  M.  Chatard. 

G.  II.  Williams, 

Lherzolite. 

Not  fresh. 

NiO  trace 

an  2.2  hy  34.3 
ol  16. 3 

Baltimore  County, 

A.  G.,  VI, 

mt  8. 4 

Maryland. 

p.  39,  1890. 

hm  3. 0 

SUBRANG  2.  DOMAGNESIC.  BALTIMOROSE. 


S03  trace 

Cl  0. 24 

Cr203  0. 32 


an  9.2  di  41.4 

Johnny  Cake  Road, 

J.  E.  Whitfield. 

G.  PI.  Williams, 

Pyroxenite. 

hy  33.8 
ol  12.2 

Baltimore  County, 

A.  G.,  VI, 

mt  2. 1 

Maryland. 

p.  41,  1890. 

CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


308 


CLASS  V.  PERFEMANE— Continued. 

RANG  1.  PERMIRLIC.  SECTION  1.  PERMIRIC. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

H20- 

co2 

Ti02 

PA 

MnO 

BaO 

Sum 

Sp.  gr. 

1 

41.43 

0.  04 

6.  25 

43.  74 

0.  55 

4.41 

none 

99.  80 

z.  oz 

A2.  II 

.691 

— 

.015 

.087 

1.094 

.010 

— 

2 

42.  00 

3. 19 

2.81 

4.41 

40.  40 

3.  30 

1.20 

0.  29 

1.66 

4 

trace 

101. 16 

D3.  IV 

.700 

.031 

.017 

.061 

1.010 

.059 

.019 

.003 

RANG  1. 

PERMIRLIC.  SECTION  1. 

PERMIRIC. 

1 

42.  39 

2.26 

0.  35 

10.  47 

39. 19 

O 

1.54 

99.  51 

3. 152 

A3.  Ill 

.707 

.022 

.002 

.146 

.980 

.041 

CLASS  i 

V.  PERFEMANE. 

RANG 

1.  PERMIRLIC.  DUNASE.  SECTION  1. 

PERMIRIC.  DUNIASE. 

1 

40. 11 

0.  88 

1.20 

6.  09 

48.  58 

2.  74 

100.34 

A2.  II 

.669 

.009 

.007 

.085 

1.215 

2 

38.  40 

0.  29 

3.42 

6.  69 

45.  23 

0.  35 

0.08 

4. 11 

0.  24 

1.10 

none 

trace 

0.  24 

none 

100.  38 

Al.  I 

3 

.640 

42.  80 

.003 

.021 

.093 

9.  40 

1.130 

47.38 

.005 

.001 

trace 

0.  57 

100. 15 

A4.  IV 

4 

A4.  IV 

.713 

39.  99 

.  667 

3.  55 

.034 

— 

.131 

8.  56 

.119 

1.185 

41.26 

1.032 

4. 19 

.  075 

— 

— 

2.  07 

trace 

99.  62 

3. 17- 
3.32 

— 

— 

— 

CLASS  V.  PERFEMANE. 

RANG  1. 

PERMIRLIC.  SECTION  2 

.  DOMIRIC. 

1 

29.5 

3.8 

17.8 

18.2 

8.  7 

10.0 

0.2 

0. 1 

1.0 

9.2 

0.3 

99.  2 

3.87 

B2.  Ill 

.492 

.037 

.ill 

.253 

.218 

.178 

.003 

.001 

.115 

.004 

CLASS  V.  PERFEMANE. 

RANG  1.  PERMIRLIC.  SECTION  1.  PERMIRIC. 


1 

4.08 

6.  40 

33.  43 

34.  58 

3.89 

0.  65 

0.  29 

0. 15 

1.32 

14.  25 

0.  02 

0.  45 

99.  71 

A2.  II 

.068 

.063 

.209 

.480 

.097 

.011 

.005 

.002 

.176 

— 

.006 

PERFEMANE - DUNOSE. 


369 


ORDER  1.  PERPOLIO.  MAORARE.  SECTION  4.  DOMOLIC. 


SUBRANG  1.  PERMAGNESIC. 


Inclusive. 

Norm. 

Cr,.03 

0. 76 

di 

2.3 

NiO 

0.10 

hy 

19.3 

ol 

69.2 

mt 

3.5 

cm 

1.2 

Spinel 

1.90 

or 

1.7 

di 

11.0 

ab 

2.6 

ol 

72. 2 

an 

2.5 

mt 

3.9 

ne 

4.0 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Riddle,  Douglas 
County,  Oregon. 

F.  W.  Clarke. 

Diller  and  Clarke, 

B.  U.  S.  G.  S.,  60, 
p.  23,  1890. 

Saxonite. 

Prades,  Pyrenees, 
France. 

A.  Brunet. 

A.  Lacroix, 

cf.  N.  J.,  1895,  II, 
p.  267. 

Lherzolite. 

Remarks. 


Not  fresh. 


Sum  high. 


SUBRANG  2.  DOMAGNESIC. 


Cr203  0. 28 

an  6.1  di  4.2 
hy  15.1 
ol  71.2 

Goose  Bay,  Strait  of 
Magellan. 

Not  stated. 

K.  v.  Khrustchoff, 
cf.  N.  J.,  1888,  I, 

Peridotite. 

Pebble. 

mt  0.5 

p.  83. 

ORDER  I.  PERPOLIC.  MAORARE.  SECTION  5.  PEROLIC.  MAORIARE. 


SUBRANG  1.  PERMAGNESIC.  DUNOSE. 


Cr203 

Chromite 

0.18 

0. 56 

C  0.9 

hv  4. 7 
ol  89.7 
mt  1. 6 
cm  0.8 

Corundum  Hill, 

Macon  County, 
North  Carolina. 

T.  M.  Chatard. 

T.  M.  Chatard, 

B.  U.  S.  G.  S.,  42, 
p.  55,  1897. 

Dunite. 

Zr02 

S 

Cr203 

NiO 

SrO 

none 

0. 06 

0.  07 
0.10 
none 

an  0. 8 

di  0.4 

hy  6.2 

ol  81.9 
mt  4. 9 

Tulameen  River, 
British  Columbia. 

W.  F.  Hille- 
brand. 

J.  F.  Kemp, 

Priv.  Contrib. 

Dunite. 

Not  fresh. 

NiO 

trace 

hy  11.4 
ol  88.2 

Dun  Mountain, 

South  Island, 

New  Zealand. 

A.  Schrotter. 

F.  v.  Hochstetter, 

G.  v.  Neu  Seeland, 
Wien,  1864,  p.  220. 

Dunite. 

Cr203 

trace 

an  9. 5 

di  9.0 
ol  78.0 
mt  1. 1 

Olivine  Range, 

South  Island, 

New  Zealand. 

T.  Bateman. 

G.  H.  F.  Ulrich, 

Q.  J.  G.  S.,  XLVI, 
p.  629,  1890. 

Peridotite. 

ORDER  3.  POLMITIC.  SECTION  1.  PERPYRIC. 

SUBRANG  3.  MAGNESIFERROUS. 


FeS2  0. 4 

Q  0.5  di  32.3 
or  0.6  hy  10.3 
ab  1.6  mt25.8 

an  9.2  il  17.7 

Drum  an  Eidhne, 
Island  of  Skye, 
Scotland. 

J.  H.  Player. 

Geikie  and  Teall, 

Q.  J.  G.  S.,  L, 
p.  653,  1894. 

Basic  schliere 
in  gabbro. 

Sum  low. 

One  decimal. 

ORDER  5.  PERMITIC.  SUBORDER  2.  DOHEMIC. 

SUBRANG  4.  DOFERROUS. 

Cr203  0. 20 

or'  1.1  mt  48.5 
ab  2.6  il  26.8 
an  3. 1  MgO  3.  9 
C  4.6  FeO  6.9 

Routivaara,  Finland. 

W.  Petersson. 

W.  Petersson, 

G.  F.  F.,  XV, 
p.  49,  1893. 

Magnetite- 

spinellite. 

14128— No.  14—03 


24 


\ 


PAET  II. 


INFERIOR  ANALYSES,  AND  ANALYSES  OF  TUFFS,  ASHES,  AND  DECOMPOSED  ROCKS 
ARRANGED  ACCORDING  TO  THE  SYSTEM  OF  PETROGRAPHY 
PRESENTED  IN  ZIRKEL’S  LEHRBUCH. 


371 


372 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


GRANITE. 


No. 

1 

B3.  IV 
2 

C4.  V 

3 

C3.  V 

4 

C2.  IV 

5 

D2.  V 

6 

C3.  V 

7 

D2.  V 

8 

D2.  V 

9 

C3.  V 

10 

C3.  V 

11 

L4.  V 
12 

B3.  IV 

13 

D4.  V 

14 

D4.  V 

15 

D4.  V 

16 

B3.  V 

17 

C2.  IV 

18 

B4.  V 

19 

B3.  IV 

20 

€3.  V 


SiOa 

A1A 

Fe203 

1 

FeO  i 

MgO 

CaO  j 

Na20 

K20 

H,0+ 

h2o— 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

1 

\  69.  39 

J  1 

17.46 

n.  d. 

1.38 

0.52 

2.14 

5. 18 

2.  77 

0.47 

0.  06 

99.  37 

|  74.  64  i 

14.90 

1.56 

n.  d. 

trace 

0.39  i 

0.  41 

6.  88 

0.  27 

99.  05 

■ 

|  73.02 

16.  22 

n.  d. 

2.59 

trace 

0.  94 

3.  60 

3.  42 

(0.21) 

trace 

100.  00 

GC 

c 

15.26 

n.  d. 

1.42 

0.  09 

0.  88 

3. 12 

5.66 

n.  d. 

none 

0. 10 

100.  01 

| 71'54 ! 

14.  24 

0.  74 

1.18 

0.  34 

0.  98 

3.  39 

4.  73 

0.  61 

trace 

0.  84 

98.  59 

|  69.  56 

15.38 

2.  65 

n.  d. 

trace 

1.  76 

5.38 

4.  31 

1.  02 

100. 06 

J  71.44 

14.  72 

2.  39 

0.  46 

0.  96 

trace 

7.  66 

0.  89 

0.  61 

0.  78 

trace 

trace 

99.91 

2.635 

}  70- « 

14.  64 

1.54 

2.34 

1.20 

trace 

7.  80 

0.  71 

0.  61 

0.  48 

trace 

trace 

99.74 

2.  634 

|J  72.47 

16. 17 

n.  d. 

0.41 

0. 14 

1.65 

3.43 

4.  83 

(0. 49) 

0.39 

100.  00 

J 

j  76.07 

12.  67 

2.00 

n.  d. 

0. 10 

0.  85 

3.  37 

4.  71 

n.  d. 

• 

0.  03 

99.  80 

jj  75.14 

15.57 

n.  d. 

2.  49 

n.  d. 

1.85 

4.  41 

0.54 

n.  d. 

100. 00 

1  69.  47 

U 

17.50 

2.  30 

n.d. 

0.31 

2.57 

• 

3.01 

4.07 

0.  74 

0.  08 

trace 

100.  09 

1 

73.  05 

J 

14.53 

2.96 

n.d. 

trace 

2.  06 

(1.72) 

5.39 

0.  29 

trace 

100.  00 

lj  71.64 

15.  66 

2.34 

n.  d. 

trace 

2.  70 

(1.58) 

5.60 

0.  48 

trace 

100.  00 

2.  654 

;  j  72.  73 

16.  95 

trace 

1.05 

0.  90 

8. 15 

0.  22 

100.  00 

|  68.  11 

14.  28 

n.  d. 

2.  63 

0.  68 

1.86 

6.57 

5.46 

n.  d. 

99.  93 

J  63.19 

10.  50 

10.97 

1.51 

1.44 

6. 12 

1.92 

4.  02 

0. 19 

99.  86 

j  69.33 

14.  33 

n.d. 

3.  60 

2.44 

3.21 

2.  70 

2.  67 

1.22 

0. 10 

99.  60 

|  66.  82 

15.62 

1.88 

1.69 

1  2.76 

3. 13 

■2.  58 

2.  04 

3.  27 

99.  79 

j  67.  98 

16. 14 

n.d. 

4.39 

I  0.  53 

5.  89 

4.32 

0.  45 

0.  30 

100.  00 

INFERIOR  ANALYSES. 


373 


GRANITE. 


Inclusive. 


S  none 


S  trace 


S  trace 


S  trace 


S  trace 


S  0. 02 


S  0.04 


S  0.34 


Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

McLaren  Bay,  Lake 
Keepawa,  Quebec. 

F.  G.  Wait. 

G.  C.  Hoffmann, 

A.  R.  (  L  S.  Can., 

IN,  p.  19R,  1898. 

Granitite-gneiss. 

Blue  Hill,  Hancock 
County,  Maine. 

H.  J.  Williams. 

W.  C.  Dav, 

19  A.  R.  U.S.  G.  S., 

II,  p.  215, 1898. 

Granite. 

Alkalies? 

Blue  Hill,  Hancock 
County,  Maine. 

Ricketts  and 
Banks. 

W.  C.  Day, 

18  A.  R.  U.S.G.  S., 

V,  p.  962, 1897. 

Granite. 

Alkalies? 

H20  by  differ¬ 
ence. 

Waldoboro,  Lincoln 
County,  Maine. 

Ricketts  and 
Banks. 

W.  C.  Day, 

20  A.  R.  U.S.  G.  S., 

VI,  p.  391, 1899. 

Granite. 

North  Jay,  Maine. 

E.  T.  Rodgers. 

W.  C.  Day, 

19  A.  R.  U.S.G.  S., 

VI  (2),p.  219, 1898. 

Granite. 

Barre,  Vermont. 

W.  C.  Day? 

W.  C.  Day, 

19  A.  R.  U.  S.  G.  S. , 

VI  (2),  p.  224, 1898. 

Granite. 

H20  includes 
C02. 

Redstone,  Carroll 
County,  New  Hamp¬ 
shire. 

F.  C.  Robinson. 

W.  C.  Day, 

20  A.  R.  U.  S.  G.S., 

VI,  p.  417, 1899. 

Red  granite. 

Alkalies? 

Redstone,  Carroll 
County,  New  Hamp¬ 
shire. 

F.  C.  Robinson. 

* 

W.  C.  Day, 

20  A.  R.  U.  S.  G.  S., 

VI,  p.  417, 1899. 

Green  granite. 

Alkalies? 

Mason,  Hillsboro 
County,  New  Hamp¬ 
shire. 

Ricketts  and 
Banks. 

W.  C.  Day, 

20  A.  R.  U.S.  G.  S., 

VI,  p.  418, 1899. 

Granite. 

H20  by  differ¬ 
ence. 

Milford,  Massachusetts. 

C.  F.  Chandler. 

W.  C.  Day, 

19  A.  R.  U.  S.  G.  S., 

VI  (2),  p.  221, 1898. 

Granite. 

Quincy,  Massachusetts. 

E.  R.  Angell. 

W.  C,  Dav, 

19  A.  R.  U.  S.  G.S., 

VI  (2) ,  p.  229, 1898. 

Granite. 

Cf.  No.  11,  lipa- 

rose. 

Chester,  Hampden 
County,  Massachu¬ 
setts. 

Not  stated. 

W.  C.  Day, 

18  A.  R.  U.  S.  G.  S., 

V,  p.  965,  1897. 

Granite. 

Westerly,  Rhode 

Island. 

F.  W.  Love. 

J.  F.  Kemp, 

B.  G.  S.  A., 

X,  p.  375,  1899. 

Granite. 

Na20  by  differ¬ 
ence. 

Westerly,  Rhode 

Island. 

F.  W.  Love. 

J.  F.  Kemp, 

B.  G.  S.  A., 

N,  p.  375,  1899. 

Granite. 

Na20  by  differ¬ 
ence. 

Stony  Creek,  Connecti¬ 
cut. 

L.  P.  Kinnicut. 

J.  F.  Kemp, 

B.  G.  S.  A., 

X,  p.  375,  1899. 

Granite. 

Waterford,  Connecticut. 

Ricketts  and 
Banks. 

W.  C.  Day, 

19  A.  R.  U.  S.  G.  S., 

VI  (2),  p.  214,  1898. 

Granite. 

Stony  Point,  Rockland 
County,  New  York. 

J.  F.  Geiste. 

W.  C.  Day, 

20  A.  R!  U.  S.  G.  S., 

VI,  p.  421,  1899. 

Granite. 

Iron  oxides? 
A1203? 

Alkalies? 

Pierce’s  Mill,  Broad 
Branch,  District  of 
Columbia. 

R.  L.  Packard. 

G.  H.  Williams, 

15  A.  R.  U.  S.  G.  S., 
p.  672,  1895. 

Granite. 

Pierce’s  Mill,  Broad 
Branch,  District  of 
Columbia. 

R.  L.  Packard. 

G.  P.  Merrill, 

B.  G.  S.  A., 

VI,  p.  323,  1895. 

Granite. 

Decomposed. 

Wilmington,  Delaware. 

Booth,  Garrett, 
and  Blair. 

W.  C’.  Day, 

19  A.  R.  U.  S.  G.  S., 

VI  (2),  p.  214,  1898. 

Granite. 

374 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


GRANITE — Continued. 


21 

C4.  V 
22 

D3.  V 

23 

B4.  V 

24 

B4.  V 

25 

At.  I 

26 
Al.  I 

27 

Al.  I 


28 
Al.  I 

29 

C4.  V 

30 

Al.  I 

31 

1)3.  V 

32 

B3.  IV 

33 

C3.  V 

34 

B3.  IV 

35 

B4.  IV 

36 

B4.  V 

37 

B4.  V 

38 

D4.  V 

39 

B4.  V 

40 

C4  V 


SiO, 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na.20 

k.2o 

H20+ 

1 

o 

C02 

Ti02 

PA 

MnO 

Sum 

. 

Sp.  gr. 

64. 12 

20.  91 

2.  96 

n.  d. 

0. 66 

1.98 

4.57 

4.  82 

n.  d. 

100.  02 

64.  85 

11.44 

2.  94 

6.02 

1.  60 

3.  49 

3.92 

3.  02 

0.  78 

0.  24 

trace 

98.  30 

2.  788 

76.  62 

13.  02 

1.01 

n.  d. 

0.05 

0.51 

2.24 

6.  38 

n.  d. 

99.  83 

77.  05 

11.77 

2.  33 

n.  d. 

n.  d. 

2.21 

2.  90 

■ 

3.  88 

0.  52 

0.02 

100.  68 

65. 14 

15.  63 

2.  37 

2. 13 

1.85 

3.  62 

2.  63 

4.  29 

0.  75 

0.  37 

0.  59 

0.  16 

trace 

99.  68 

64.  81 

19.  44 

1.82 

0. 16 

0. 19 

0. 18 

0.  21 

5.  30 

5.  25 

1.41 

none 

0.  73 

0. 10 

trace 

100. 01 

71.93 

12.  21 

0.64 

2.  99 

0.  58 

2.  59 

0.  23 

3.  29 

0.  37 

2.  06 

1.95 

0.  40 

. 

0. 10 

0. 18 

99.  92 

66.  66 

14.  26 

0.  67 

2.41 

0.  95 

3.37 

none 

4. 19 

2. 16 

0.36 

3.  67 

0.  49 

0.  17 

trace 

100.  31 

75.35 

13.  69 

3.  94 

n.  d. 

0.  06 

2.  97 

1.14 

2.  85 

n.  d. 

100.  00 

84. 15 

9.  67 

0.  51 

0.  07 

0.  04 

0.  53 

2.  65 

# 

1.57 

0.  74 

0.  21 

trace 

trace 

100. 14 

64.91 

21.49 

1.G9 

4.  62 

1. 13 

0.71 

•  2.72 

3. 55 

' 

n.  d. 

100.  22 

75.  8 

13.7 

0.  5 

0.3 

trace 

0.  5 

1.9 

6.5 

0.  03 

99.5 

2.59 

66.6 

17.4 

1. 1 

'  2. 1 

1.2 

2.  2 

3. 1 

4.  6 

0.9 

99.2 

2.  62 

62.3 

18.6 

1.5 

3.0 

2.5 

4.3 

1.9 

4.8 

0.6 

% 

99.5 

2.  67 

68.  55 

16.  21 

2.  26 

n.d. 

1.04 

2.  40 

4.  08 

4. 14 

n.  d. 

0.  45 

99. 13 

70.  6 

13.3 

3. 1 

n.  d. 

0.4 

2.  2 

0.  8 

9.2 

0.  3 

99.9 

75.  00 

13.  24 

2.  52 

n.  d. 

n.  d. 

0.  69 

3.  07 

4.  33 

0.80 

99.65 

71.78 

15.  86 

4. 19 

n.d. 

0.50 

3. 16 

4. 10 

1.13 

1.17 

101.  89 

70.69 

15.  20 

3.  76 

n.d. 

0.  45 

3.  31 

4.  69 

2.  31 

0.  56 

101.07 

71.80 

16.00 

1.76 

n.  d. 

1.83 

1.  74 

3.47 

4.  20 

0.  62 

101.42 

INFERIOR  ANALYSES. 


375 


GRANITE — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Petersburg,  Virginia. 

Hunt  and  Clapp. 

AY.  C.  Dav, 

19  A.  R.  U.  S.  G.S., 

VI  (2),  p.  227,  1898. 

Granite. 

A1203  high. 

Sudbury,  Ontario. 

Not  stated. 

T.  L.  Walker, 

Q.  J.  G.  S., 

LIII,  p.  56,  1897. 

Granite. 

Waushara  County, 
Wisconsin. 

Not  stated. 

AY.  C.  Dav, 

18  A.  R.  U.  S.  G.  S., 

V,  p.  975,  1897. 

Granite. 

Graniteville,  Missouri. 

AY.  H.  Melville. 

AY.  C.  Dav, 

18  A.  R.  U.  S.  G.  S., 

AT,  p.  968,  1897. 

(Iranite. 

S03 

BaO 

SrO 

0.05 

0.10 

trace 

Butte,  Montana. 

H.  N.  Stokes. 

AY.  H.  Weed, 

J.  G., 

VII,  p.  749,  1899. 

Granite. 

Weathered. 

Cf.  Nos.  5  and  6, 
harzose. 

so3 

BaO 

SrO 

0. 31 

0.10 

trace 

Butte,  Montana. 

H.  N.  Stokes. 

AAreed  and  Tower, 

B.  U.  G.  S.,  168. 
p.  117,  1900. 

Granite. 

Altered. 

Cf.  Nos.  5  and  6, 
harzose. 

S 

NiO 

BaO 

Fe 

Zn 

Pb 

0.18 

none 

trace 

0. 13 

0.09 

trace 

Hailey,  Idaho. 

W.  F.  Hillebrand. 

AAh  Lindgren, 

20  A.  R.  U.  S.  G.  S., 

Ill,  p.  219,  1900. 

Quartz-monzonite. 

Altered. 

Cf.  No.  31, 
toscanose 

S03 

s 

BaO 

none 

0. 95 
none 

Silver  Wreath  Tunnel, 
Boise  County,  Idaho. 

G.  Steiger. 

' 

AY.  Lindgren, 

18  A.  R.  U.  S.  G.  S., 

Ill,  p.  640,  1898. 

Granite. 

Altered. 

Cf.  No.  4, 
yellowstonose. 

Exeter,  Tulare  County, 
California. 

AVatertown  Arse¬ 
nal. 

AY.  C.  Day, 

20  A.  R.  U.  S.  G.  S., 

VI,  p.  358,  1899. 

Granite. 

F 

SrO 

0.02 

trace 

Belmont,  Nevada. 

H.  N.  Stokes. 

J.  E.  Spurr, 

A.  J.  S., 

X,  11.  858,  1900. 

Beresite. 

Janucillo,  Monte  Cum- 
bre,  Argentina. 

J.  C.  Jenkins. 

A.  Stelzner, 

Btr.  G.  Pal.  Arg.  Rep., 

I,  p.  211,  1885. 

Andengranit. 

A1203  high. 

Ben  Damhain,  Loch 
Garabal,  Scotland. 

J.  H.  Player. 

Dakyns  and  Teall, 

Q.  J.  G.  S., 

XLV1II,  p.  115,  1892. 

Eurite. 

Alt-na-Lairige,  Loch 
Garabal,  Scotland. 

J.  H.  Player. 

Dakyns  and  Teall, 

Q.  J.  G.  S., 

XLA'III,  p.  115,  1892. 

Granitite. 

Alt-na-Lairige,  Loch 
Garabal,  Scotland. 

J.  H.  Player. 

Dakyns  and  Teall, 

Q.  J.  G.  S., 

XL VIII,  p.  115,  1892. 

Hornblende- 

granitite. 

Shap  Fell,  Westmore¬ 
land,  England. 

J.  B.  Cohen. 

Harker  and  Marr, 

Q.  J.  G.  S., 

XLVII,  ji.  276,  1891. 

Granite. 

Y  Drosge,  Caernarvon¬ 
shire,  Wales. 

E.  H.  Acton. 

A.  Harker, 

Bala  A’oleanic  Series, 

1889,  p.  46. 

Granophyre. 

Mourne  Mountains, 
County  Down,  Ire¬ 
land. 

S.  Haughton. 

A\T.  J.  Sollas,  Tr.  R.  Ir.  Acad., 
XXX,  Pt.  XI, 
p.  491,  1894. 

Granite 

Aughrim,  Leinster, 
Ireland. 

Net  stated. 

AA'.  J.  Sollas,  Tr.  R.  Ir.  Acad., 
XXIX,  Pt.  XIV, 
p.  477,  1891. 

Microgranite. 

Aughrim,  Leinster, 
Ireland. 

Not  stated. 

AA'.  J.  Sollas,  Tr.  R.  Ir.  Acad., 
XXIX,  Pt.  XIV, 
p.  471,  1891. 

Soda-granite. 

Le  ITuelgoat,  Brittany, 
France. 

Not  stated. 

C.  Barrois,  Guide  Exc.  ATIII 
Cong.  G.  Int., 

VII,  p.  21,  1900. 

Granite. 

376 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


No. 


41 

IM.  V 

42 

C3.  V 

43 

C4.  V 

44 

B4.  V 

45 

B3.  IV 

46 

C3.  V 

47 

D3.  V 

48 

C3.  V 

49 

D3.  V 

50 

B3.  IV 

51 

D4.  V 

52 

D2.  V 

53 

C2.  IV 

54 

C2.  IV 

55 

B4.  V 

56 

B4.  V 

57 

A4.  IV 

58 

A4.  IV 

59 

A4.  IV 

60 

B4.  V 


GRANITE — Continued. 


Si02 

A1203 

Fe203 

FeO 

MgO 

O 

Na.,0 

k2o 

h20+ 

h2o- 

co2 

Ti02 

FA 

MnO 

Sum 

Sp.  gr. 

J  73.  79 

12.36 

0.  63 

0.52 

0. 19 

trace 

5.  45 

5.  71 

0.51 

99. 16 

2.  573 

J  66.  62 

17.35 

3.  91 

0. 19 

trace 

trace 

4.52 

'  4.  93 

1.85 

0.  99 

100. 36 

|  75.  59 

12.  93 

n.  d. 

n.  d. 

n.  d. 

trace 

3.44 

7.  05 

0.  69 

99.  70 

j  70. 

14.  80 

n.  d. 

3.  07 

trace 

1.  33 

2.51 

8.  26 

n.  d. 

100.  67 

)  06.07 

20.  96 

n.d. 

3.28 

0.  77 

6.58 

6.  63 

'  2.  91 

1.96 

0.  68 

100.  52 

|  67.  3 

15.2 

1.2 

3.4 

1.2 

3.6 

3.8 

3.4 

1.7 

0.4 

101.2 

j-  71.  53 

13.  70 

1.  79 

2.34 

0.  48 

2.  08 

6.  71 

2.  82 

0.  34 

101. 79 

j  69.  52 

14.  04 

0.34 

4.  42 

0.32 

2.  40 

3.  40  . 

6.  25 

0.52 

101.21 

|  66.  95 

15.03 

2. 14 

3.  23 

0.  33 

3.22 

4.  43 

2.46 

0.  39 

98.18 

J-  76.  86 

10.  76 

1.97 

n.  d. 

0.  81 

1.42 

2.46 

4.  33 

1.04 

trace 

trace 

0.36 

100.  01 

2.  655 

1 

l  76. 10 

1 

14.  36 

2.  99 

trace 

1.51 

trace 

3.  77 

0.  81 

0.11 

0.  48 

100. 13 

2. 469 

1  74.19 

12.  80 

2.11 

1.17 

0.50 

n.  d. 

2.  49 

4.  48 

0.30 

0.  04 

0.06 

0.65 

98.  81 

(99.  82) 

j  77.56 

14.39 

1.40 

1.27 

0.  93 

2.  01 

3.31 

4.  82 

1. 18 

0.  31 

101.  20 

2.  668 

j  68.  90 

16.  80 

* 

V _ 

1.77 

1.64 

1.34 

1.80 

3.  90 

3.11 

1.91 

0.  24 

101.  41 

2.  681 

1 74'29 

15.  95 

0.66 

0.  78 

2.  66 

5.31 

0.  66 

trace 

trace 

100. 31 

2.  68 

J  69.  26 

14. 13 

4.38 

n.  d. 

3.  31 

4.31 

1.54 

1.96 

0.  99 

99.88 

j  j  76.  62 

11.76 

n.d. 

3.  51 

0.  22 

1.80 

3.02 

2.  85 

0.  70 

100.  48 

||  76.20 

12.  89 

n.  d. 

1.72 

0.  80 

0.50 

■ 

3.19 

3.  93 

1  1.16 

100. 39 

j  75.  96 

13.  38 

n.d. 

1.66 

0.34 

0.  88 

' 

3.32 

4.  58 

0.  46 

100.  58 

|  75.23 

16. 13 

n.  d. 

trace 

0.13 

0.  88 

3.  87 

3.  77 

0.  83 

i 

100. 84 

INFERIOR  ANALYSES. 


377 


G  RA  NIT  E — Conti  lined . 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Apietto,  Corsica. 

G.  Rupprecht. 

G.  Rupprecht, 

In.  Diss.  Erlangen, 

1889,  p.  14. 

Granite. 

Alkalies  high. 

Ajaccio,  Corsica. 

G.  Rupprecht. 

G.  Rupprecht, 

In.  Diss.  Erlangen, 

1889,  p.  6. 

Biotite-granite. 

♦ 

PA  high. 

Kullen,  Sweden. 

L.  G.  Thome. 

A.  Hennig,  cf.  N.  .T.  1901, 

II,  p.  59. 

Pegmatite. 

■  ’ 

Vasastaden,  Sweden. 

H.  Biickstrom. 

H.  Biickstrom, 

G.  F.  F., 

IX,  p.  357,  1887. 

Granite. 

Slattmosa,  Sweden. 

H.  Biickstrom. 

H.  Biickstrom, 

OFF 

IX,  p.  360,  1887. 

Granite. 

Upsala,  Sweden. 

A.  G.  Hogbom. 

A.  G.  Hogbom, 

G.F.  f:, 

X,  p.  222, 1888. 

Granite. 

Wiborg,  Finland. 

H.  Berghell. 

II .  Berghell, 

Finl.  G.  Und. 

Bl.  33,  p.  23, 1898. 

Rapakiwi  granite. 

Huovila,  Sakkijarvi, 
Finland. 

H.  Berghell. 

II.  Berghell, 

Finl.  G.  Und. 

Bl.  28,  p.  15, 1896. 

Rapakiwi  granite. 

Simola,  Wiborg, 

Finland. 

H.  Berghell. 

H.  Berghell, 

Finl.  G.  Und. 

Bl.  33,  p.  25, 1898. 

Rapakiwi  granite. 

BaO  trace 

Dilshofen,  Hesse. 

F.  W.  Schmidt. 

C.  Chelius, 

Erl.  G.  Kte.  Hesse, 

I,  Bl.  Rossdorf,  p.  36, 1886. 

Microgranite. 

* 

Dacbsberg,  Hesse. 

F.  W.  Schmidt, 

C.  Chelius, 

Erl.  G.  Kte.  Hesse, 

I.  Bl.  Rossdorf,  p.  35, 1886. 

Granitite. 

BaO  0. 02 

Gottelsberg,  Aschaffen- 
burg,  Hesse. 

Not  stated. 

G.  Klemm, 

Erl.  G.  Kte.  Hesse, 

III,  Bl.  Schafheim,  p.  15, 1894. 

Granite. 

Sum  uncertain. 

Li20  trace 

Cu  trace 

Reuth,  Bavaria. 

A.  Bbttger. 

F.  v.  Sandberger, 

Sb.  Munch.  Akad., 

XVIII,  p.  466, 1888. 

Lithionite-granite. 

Strehlenberg,  Redwitz, 
Bavaria. 

A.  Bottger. 

F.  V.  Sandberger, 

Sb.  Munch.  Akad., 

XVIII,  p.  466,  1888. 

Lithionite-granite. 

Rican,  Prague, 

Bohemia. 

E.  Kubricht. 

F.  Katzer, 

Jb.  Wien.  G.  R-A., 

XXXVIII,  p.411,1888. 

Granite. 

Reifnig,  Bacbergebirge, 
Styria. 

A.  Pontoni. 

A.  Pontoni, 

T.M.P.M., 

XIV,  p.  366, 1895. 

Granite. 

Aig.  du  Grand  Ckarmoz, 
Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

Near  Orny,  Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

Arete  du  Chatelet, 

Mont  Blanc. 

Duparc. 

Dupare  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  47,  1898. 

Protogine. 

Les  Rogues,  Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  82,  1898. 

Aplite. 

378 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


No. 

61 

A4.  IV 
62 
C4.  V 

63 

A4.  IV 

64 

A4.  IV 

65 

A4.  IV 

66 

C4.  V 

67 

A4.  IV 

68 

A4.  IV 

69 

D4.  V 

70 

A4.  IV 

71 

A4.  IV 

72 

A4.  IV 

73 

A4.  IV 

74 

A4.  IV 

75 

D4.  V 

76 

B4.  V 

77 

D4.  V 

78 

B4.  IV 

79 

A3.  Ill 

80 

A4.  IV 


SiO 


■2 


|  75.21 
|  74.66 
74. 14 


|  73.  85 


72.  08 


71.84 


|  71.64 
1  70.  62 


69.  95 


69.  85 

69.  54 

68.  91 


|  68.  55 


68.  53 


|  66.  35 
|  69.30 


j  70.34 


GRANITE— Continued. 


A1A 

FeA 

FeO 

MgO 

CaO 

Na20 

K20 

H20+ 

H20- 

C02 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

13.88 

n.  d. 

0.  91 

0.25 

1.19 

3.96 

4.50 

0.  24 

100. 14 

i 

13.84 

n.d. 

2.  01 

0. 41 

1.  05 

3.  33 

5.34 

0.64 

101.28 

13.  30 

n.  d. 

1.61 

0.20 

0.69 

3.  63 

6.  08 

0.60 

100. 25 

15.23 

n.  d. 

1. 14 

0.29 

1.68 

3.  27 

4.10 

0.36 

99.  92 

14.  83 

n.d. 

1.79 

0.  28 

1.15 

3. 42 

5.49 

0.  53 

99.91 

16.12 

n.  d. 

2.  01 

0.  32 

1.20 

3. 43 

5.  71 

0.  74 

101.68 

13.  54 

n.  d. 

2.  75 

0.  40 

1. 15 

4.  33 

4.  76 

0.51 

99.  52 

14.07 

n.  d. 

2.01 

0.  40 

1.08 

4. 11 

5.  25 

0.  86 

99.  62 

17. 12 

trace. 

d  . 

n.  d. 

1.62 

3.  87 

3.  95 

n.  d. 

98.  20 

15.50 

n.  d. 

2.  84 

0.  32 

2.05 

3.  05 

4.  76 

1.01 

100. 15 

14.  35 

n.  d. 

3.47 

1.20 

1.27 

3.  32 

4.  92 

1.29 

99.  77 

16. 10 

n.  d. 

1.89 

0.  71 

0.  72 

3.  21 

6.  13 

0.  90 

99.  51 

15.  20 

n.  d. 

2.  76 

0.  34 

2. 16 

4. 19 

5.  37 

0.  97 

/ 

100.  53 

15.89 

n.  d. 

3.  46 

0.  60 

2.  35 

4.  10 

4.  01 

0.  53 

99.  85 

15.  95 

n.  d. 

1.85 

0.  46 

1.  86 

3.  70 

5.  57 

0.91 

98.  85 

20.  37 

0.  45 

2.47 

3.  17 

5.  25 

0.  39 

100.  63 

17.  47 

n.  d. 

3.  18 

0.  46 

2.31 

5.64 

5.  43 

0.  73 

101.  57 

16.  40 

n.  d. 

4.  50 

1.  18 

1.  12 

5.  02 

3.  46 

n.  d. 

ICO.  98 

13.  64 

1.04 

n.  d. 

0.09 

0.  59 

1.23 

0.18 

12.  52 

0.24 

100. 22 

2.613 

11° 

16. 17 

2.  54 

n.  d. 

0.  86 

2. 11 

3.  45 

4.29 

0.  66 

100.  49 

INFERIOR  ANALYSES. 


379 


GRANITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Aig.  du  Tacul,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  82,  1898. 

Aplite. 

Treutz-Bouc,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

Arete  de  la  Breya, 

Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  47,  1898. 

Protogine. 

Aig.  du  Charmoz,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  82,  1898. 

Aplite. 

Col  du  Geant,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

H 

Pas  d’Arpette,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

Le  Pissoir,  Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

Clocher  de  Planereuse, 
Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  1,  p.  47,  1898. 

Protogine. 

Glacier  du  Trient,  Mont 
Blanc. 

* 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  82,  1898. 

Aplite. 

Aiguille  du  Dru,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

• 

Col  du  Chardonnet, 
Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

Glacier  d’Orny,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

Glacier  d’Orny,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine.- 

Glacier  de  Brensa,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  48,  1898. 

Protogine. 

• 

Glacier  d’Orny,  Mont 
Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.'l,  p.  48,  1898. 

Protogine. 

. 

Le  Portalet,  Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  47,  1898. 

Protogine. 

Rocher  Tourette,  Mont 
Blanc. 

Duparc. 

Duparc  and  INI  razee, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.'l,  p.  48,  1898. 

Protogine. 

Serra  di  Longone,  Elba, 
Italy. 

A.  Funaro. 

A.  Funaro, 

B.  Com.  G.  Ital., 

XVII,  p.  381,  1886. 

Granite. 

F  0.35 

Kyssyr  Dagh, 

Karabagh  District, 
Trans-Caucasia. 

A.  Rohrig. 

C.  R.  Thost, 

Abh.  Senkenb.  Nat.  Ges., 
XVIII,  p.  219,  1894. 

'  Granite. 

Altered. 

Cap  Marsa,  M6nerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phys.  Gen., 
XXXIII,  No. *2,  p.  18,  1900. 

Tourmaline-granite. 

380 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


GRANITE— Continued. 


No. 


81 

C4.  V 
82 

A4.  IV 
83 

B4.  V 


Si02 

A1A 

Fe2Os 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

H20- 

C02 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

j  64.48 

18.  39 

4.  67 

n.  d. 

1.61 

4.  48 

2.  77 

3.  39 

1.32 

101. 11 

J  63. 54 

17.24 

5.  72 

n.  d. 

1.  7Q 

4.31 

3.  22 

2.  90 

1.30 

99.  93 

j  75. 54 

13.  75 

4.  99 

n.  d. 

0.69 

0.  94 

1.55 

3.34 

0.  28 

101.  08 

1 

C3.  V 
2 

D4.  V 

3 

A4.  IV 

4 

B3.  IV 

5 

B4.  V 

6 

B'2.  Ill 

7 

B4.  V 

8 

B4.  IV 

9 

A2.  II 

10 

C4.  V 

11 

B3.  IV 
12 

1)4.  V 

13 

C3.  V 

14 

D4.  V 

15 

B4.  V 

16 

B4.  V 


QUARTZ-PORPHYRY. 


|  74.  21 

12.  77 

2. 51 

2.04 

1.04 

0.  98 

■ 

2.17 

5.44 

n.  d. 

* 

trace 

101. 16 

j  67.  20 

14.  95 

5. 19 

n.  d. 

2.39 

0.  30 

4.00 

0.  89 

2. 13 

0.  40 

97. 45 

2.  43 

J  67.9 

15.7 

3.0 

n.  d. 

1.  5 

1.4 

1.  5 

5.6 

3.7 

100.3 

J  73.  69 

14,26 

0.  73 

0. 41 

trace. 

trace. 

3.  76 

7.84 

0.  31 

101. 00 

2.  626 

J  76.40 

15.  68 

0.  78 

n.  d. 

n.  d. 

n.  d. 

4.  92 

1.10 

0.  88 

99.  76 

2.  603 

j  75.  78 

11.22 

0.  56 

2.  54 

0.  53 

0. 95 

2. 14 

4.  08 

1.26 

1.16 

0.  31 

100.  82 

|  73.03 

14.  33 

2.64 

n.  d. 

0.  41 

0.  74 

2.  97 

2.  07 

2.  58 

trace 

0.  69 

99. 46 

2.  654 

j  72.  08 

16. 15 

2.21 

n.  d. 

0.  68 

0. 18 

0.  21 

' 

5.  23 

2.  40 

99. 14 

2.  594 

J  70.  88 

15.15 

3.  22 

0.  55 

0.  53 

0.  21 

0.  23 

5.51 

2.  72 

0.  32 

0.  26 

99.  75 

2.  685 

J  75.76 

12.24 

n.  d. 

2.  06 

0.  29 

2.51 

3.13 

4.  22 

n.  d. 

0.  83 

\ 

0.  44 

101.48 

J  76.  66 

10.  85 

0.  96 

n.  d. 

trace. 

0.  32 

0.  49 

9.  58 

0.  61 

trace 

99.  47 

|  68.  45 

12.  40 

4.  20 

n.  d. 

0.  67 

L  53 

4.  36 

5.91 

1.24 

98.  76 

J  66. 83 

16.  40 

3.17 

1.89 

1.07 

2.  59 

4.65 

4.  21 

0.  51 

101.  32 

J  78.25 

13.  22 

n.  d. 

1. 11 

0.  26 

1.29 

3.  88 

4.  00 

0.  48 

102.  49 

J  75.  81 

13.  70 

n.  d. 

2.24 

trace. 

0.  72 

3.  96 

4.13 

n.  d. 

100.  56 

J  75.  81 

13.15 

n.  d. 

1.16 

0. 35 

0.  89 

3.  66 

5.43 

0.  40 

.  « 

100.  85 

INFERIOR  ANALYSES. 


381 


GR  A  NITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Sidi  Mokren,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  2,  p.  18,  1900. 

Granite. 

Ain  Tolba,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  2,  p.  18,  1900. 

Granite. 

St.  Thomas  Mount, 
Madras,  India. 

T.  L.  Walker. 

T.  H.  Holland, 

Mem.  G.  S.  India, 

XXVIII,  p.  142,  1900. 

Charnockite. 

QUARTZ-PORPHYRY. 


Blue  Hills,  Massachu¬ 
setts. 

Students  of  Mass. 
Inst.  Techn. 

W.  0.  Crosby, 

Occ.  Pap.  Bost.  Soc.  Nh., 

IV,  p.  362,  1900. 

Quartz-porphyry. 

Mean  of  many 
poor  determi¬ 
nations. 

Flagstaff  Hill,  Boulder, 
Colorado. 

Palmer  and 
Fulton. 

Palmer  and  Fulton, 

Pr.  Colo.  Sci.  Soc., 

Ill,  p.  356,  1890. 

Quartz-porphyry. 

( 

Coquet,  Cheviot  Hills, 
Scotland. 

Waller. 

J.  J.  H.  Teall, 

Geol.  Mag., 

XXII,  p.  Ill,  1885. 

Quartz-l’elsite. 

Ajaccio,  Corsica. 

G.  Rupprecht, 

G.  Rupprecht, 

In  Diss.  Erlangen, 

1889,  p.  11. 

Quartz-porphyry. 

Goldstein,  Westphalia. 

A.  Bomer. 

O.  Miigge, 

N.  J.  B.  B., 

X,  p.  776,  1896. 

Quartz-porphyry. 

S03  0. 12 

Rospe,  Westphalia. 

K.  Gremse. 

O.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  577,  1893. 

Porphyry  tuff. 

Oberhunden,  West¬ 
phalia. 

.... 

A.  Bomer. 

O.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  568,  1893. 

Porphyry. 

Metamor¬ 

phosed. 

Bruchhauser  Steine, 

W  estphalia. 

■ 

. 

A.  Bomer. 

O.  Miigge, 

N.  J.  B.  B., 

X,  p.  776,  1896. 

Quartz-porphyry. 

Metamor¬ 

phosed. 

S03  0. 17 

j 

Alvensleben,  Magde¬ 
burg,  Hesse. 

Hampe. 

F.  Klockmann, 

Jb.  Pr.  G.  L-A., 

XI,  p.  196,  1892. 

Quartz-porphyry 

tuff. 

Libsic,  Moldauthal, 
Bohemia. 

Plaminek. 

J.  Ivlvana, 

Cf.  N.  J.,  1898, 

I,  p.  485. 

Felsophyre. 

LLO  trace 

Czeremosz  River, 

Galicia. 

J.  Schramm. 

R.  Zuber, 

T.  M.  P.  M., 

VII,  p.  196,  1886. 

Halleflinta. 

Zalas,  Cracow,  Galicia. 

R.  Zuber. 

R.  Zuber, 

Jb.  Wien.  G.  R-A., 

XXXV,  p.  747,  1885. 

Quartz-porphyry. 

Javoria,  S.  Carinthia. 

H.  V.  Graber. 

H.  V.  Graber, 

Jb.  Wien.  G.  R-A., 

XLVII,  p.  278,  1897. 

Quartz-porphyry. 

Arete  du  Chatelet, 

Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.'l,  p.  107,  1898. 

Quartz-porphyry. 

Arete  de  la  Breya, 

Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  107,.  1898. 

Quartz-porphvrv. 

Chalet  de  Planereuse, 
Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  107,  1898. 

Quartz-porphyry. 

382 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


QUARTZ- PORPHYRY— Continued. 


No. 

Si02 

A1203 

Fe203 

FeO 

MgO 

CaO 

Na20 

k2o 

H20+ 

H20- 

O 

c 

to 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

17 

1  73.25 

14.  39 

n.  d. 

2.  21 

0. 53 

2.  36 

3.  02 

5.94 

1.11 

102.  81 

D4.  V 

1 

18 

}  71.48 

14.  82 

n.  d. 

2.42 

0. 27 

0.93 

4.  00 

5.69 

0.  35 

99.  96 

A4.  IV 

) 

19 

1  71.03 

15.24 

n.  d. 

2.  58 

0.  43 

1.39 

4.  29 

6. 12 

0.  27 

101.  35 

C4.  V 

J 

20 

69.  81 

14.  78 

n.  d. 

3. 15 

0.  98 

2.94 

3.  73 

4.  63 

0.  78 

100.  80 

B4.  V 

1 

21 

1  68.  87 

16.  49 

n.  d. 

2.  62 

0.  32 

2.  25 

4. 13 

5.  89 

0.  83 

101. 40 

C4.  V 

1 

22 

i  67.  78 

15.  88 

n.  d. 

3.97 

1.25 

2.  90 

3.95 

4.  95 

1.32 

102.  00 

D4.  V 

I 

23 

l  71. 10 

15.92 

3.17 

0.  34 

trace 

0.  88 

3.17 

6.11 

0. 11 

0.  45 

101. 25 

C3.  V 

J 

24 

1  70. 10 

16.25 

n.  d. 

4.  05 

0.  54 

1.32 

4.  27 

4.  20 

n.  d. 

100.73 

C4.  V 

1 

25 

1 

}  68.5 

14.5 

1.0 

3.0 

0.1 

trace 

9.2 

3.0 

n.  d. 

99.3 

B3.  IV 

1 

26 

[  75.51 

18. 10 

2.  69 

n.  d. 

0. 12 

0.  36 

0. 16 

1.23 

n.  d. 

0.  82 

98.  99 

C4.  V 

RHYOLITE. 


1 

D4.  V 

j  73.09 

13.  43 

2.57 

n.  d. 

1.03 

2.  29 

3.  85 

1.58 

0.  76 

98.  60 

2 

A2.  II 

j  61.  21 

15.  67 

4.  06 

0.62 

1.58 

2.18 

1.57 

2.  75 

10.  20 

0. 56 

0. 10 

100.  50 

3 

A4.  IV 

J  71.01 

15 

17 

n.  d. 

0.  34 

1. 19 

2.  77 

2.97 

6.  34 

99.  79 

4 

A3.  Ill 

j  68.  68 

12.  69 

1. 14 

1.17 

1.  14 

1. 11 

1.23 

5.  58 

7.99 

100.  73 

5 

Al.  I 

j  87.  37 

7.44 

0.  09 

0.18 

0. 12 

0. 10 

0. 14 

1.  79 

1.39 

0.51 

0. 09 

trace 

trace 

100.  24 

6 

Al.  I 

j  78.59 

12. 13 

none 

0. 09 

0.  41 

0. 16 

0. 10 

2.  55 

2. 47 

0.  82 

0. 12 

trace 

trace 

100.  07 

7 

C2.  IV 

J  66.  69 

15.  40 

1.84 

n.  d. 

0.  85 

0.09 

0. 16 

3.  50 

2. 97 

0.  83 

2. 11 

0.  08 

trace 

98.  71 

8 

A2.  II 

J  89.  20 

2.39 

1.21 

none 

trace 

trace 

1. 11 

0.  79 

5.  09 

none 

none 

100.  23 

9 

A4.  IV 

j  75.07 

12. 15 

1.62 

n.  d. 

0. 14 

0. 86 

\ 

4. 12 

4. 57 

1.34 

0.05 

99.  92 

INFERIOR  ANALYSES. 


383 


QUARTZ-PORPH  YRY— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Col  du  Grepillon, 

Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXlII,  No.  1,  p.  108,  1898. 

Quartz-porphyry. 

Les  Six-niers, 

Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  108,  1898. 

Quartz-porphyry. 

La  Maya,  Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  1,  p.  108,  1898. 

Quartz-porphyry. 

Arete  du  Chatelet, 

Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  107,  1898. 

Quartz-porphyry. 

La  Maya,  Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phvs.  Gen., 
XXXIII.  No.  1,  P.  107,  1898. 

Quartz-porphyry. 

L’Amone,  Mont  Blanc. 

Duparc. 

Duparc  and  Mrazec, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  1,  p.  108,  1898. 

Quartz-porphyry. 

Malga  Serra  Caprile, 
Adamello  Group, 
Piedmont. 

C.  Riva. 

C.  Riva, 
cf.  N.  J.,  1897, 

II,  p.  63. 

Quartz-porphyry. 

• 

Mola,  Serra  de  Lon- 
gone,  Elba. 

A.  Funaro. 

A.  Funaro, 

B.  Com.  G.  I tab, 

XVII,  p.  381,  1886. 

Quartz-porphyry. 

- 

Comende,  San  Pietro, 
Sardinia. 

S.  Bertolio. 

S.  Bertolio, 

Rend.  Acc.  Line., 

V,  p.  151,  1896. 

Comendite. 

Cf.  No.  74,  lipa- 
rose. 

Golabara  River,  Servia. 

A.  B.  Griffiths. 

A.  B.  Griffiths, 

Q.  J.  G.  S. , 

XLII,  p.  566,  1886. 

Porphyry. 

RHYOLITE. 


- 

Utley,  Green  Lake 
County,  Wisconsin. 

S.  Weidman. 

S.  Weidman, 

B.  Wise.  G.  Nh.  S., 

Ill,  p.  14,  1898. 

Metarhyolite. 

Cf.  B.  U.  S.G.S., 
150,  p.  169, 
1898. 

Checkerboard  Creek, 
Castle  Mountains, 
Montana. 

L.  V.  Pirsson. 

Weed  and  Pirsson, 

B.  U.  S.  G.  S.,  139, 
p.  128,  1896. 

Rhyolite  tuff. 

Bozeman,  Montana. 

F.  W.  Clarke. 

A.  C.  Peale, 

B.  U.  S.  G.  S.,  148, 
p.  141,  1897. 

Rhyolitic  volcanic 
dust. 

i 

Gallatin  Valley, 

Gallatin  County, 
Montana. 

H.  N.  Stokes. 

J.  P.  Iddings, 

B.  U.-S.  G.  S.,  150, 
p.  147,  1898. 

Rhyolite  ash. 

FeSo 

NiO 

BaO 

SrO 

1.00 

none 

0. 02 
none 

De  Lamar  Mine,  Silver 
City,  Idaho. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

20  A.  R.  U.  S.  G.  S., 

Ill,  p.  179,  1900. 

Altered  rhyolite. 

FeS.. 

NiO 

BaO 

SrO 

2. 61 
none 

0. 02 
none 

De  Lamar  Mine,  Silver 
City,  Idaho. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

20  A.  R.  U.  S.  G.  S., 

Ill,  p.  179,  1900. 

Altered  rhyolite. 

- 

S03 

FeS.> 

BaO' 

0.11 

3. 99 

0. 09 

De  Lamar  Mine,  Silver 
City,  Idaho. 

H.  N.  Stokes. 

W.  Lindgren, 

20  A.  R.  U.  S.  G.  S., 

Ill,  p.  179,  1900. 

Altered  rhyolite. 

so3 

0. 44 

Iron  Pot,  Lower 

Basin,  Yellowstone 
National  Park. 

J.  E.  Whitfield. 

W.  H.  Weed, 

B.  U.  S.  G.  S.,  148, 
p.  132,  1897. 

Altered  rhyolite. 

Summit  County, 
Colorado. 

Teplitz. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  454,  1887. 

Nevadite. 

>•2 

02 

40 

01 

85 

91 

59 

14 

70 

72 

6 

9 

5 

09 

30 

79 

06 

33 

4 

31 

37 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 
RH  YOLITte— Continued. 


Fe,Os 

FeO 

MgO 

CaO 

Na.,0 

K,0 

H20+ 

H20- 

co2 

Ti0.2 

1.22 

n.  d. 

trace 

1.38 

:  •  »  1 

2.  28 

3.97 

6. 12 

1.31 

1.61 

0.  37 

0.56 

2.11 

2.39 

7.41 

1.05 

1.47 

0.50 

0.  72 

1.06 

1.94 

5. 12 

4.  68 

i 

0.  73 

n.  d. 

trace 

0.  87 

5.  58 

2.  68 

6. 15 

n.  d. 

0.  89 

n.  d. 

0.  77 

3.  62 

4.  79 

1.19 

0.80 

n.  d. 

0.  30 

0.  76 

3.  30 

5.  35 

1.03 

1.99 

n.  d. 

0. 40 

1.93 

3.  97 

2.  55 

n.  d. 

2.  98 

n.  d. 

0.  59 

1.07 

4.  77 

4.  45 

n.  d. 

0.  38 

5.  25 

n.  d. 

1.34 

3.  33 

5.  45 

4. 19 

n.  d. 

1.06 

0.7 

1. 1 

trace 

0.9 

1.7 

4.7 

5.2 

3.0 

n.  d. 

1.5 

1.4 

1.  5 

5.6 

3.7 

6. 1 

n.  d. 

n.  d. 

n.  d. 

0.3 

5.8 

0.4 

1.80 

• 

1.50 

trace 

6.  07 

1.27 

1.31 

• 

2. 16 

n.  d. 

2.  02 

trace 

3.  41 

4.  80 

1.69 

3.  32 

n.  d. 

0.  62 

1.94 

4.12 

2.  99 

1.08 

1.33 

n.  d. 

1.26 

trace 

4.  11 

5.  90 

0.  26 

4.02 

n.  d. 

1.59 

trace 

1.64 

5.  05 

1.34 

1.6 

n.  d. 

n.  d. 

0.6 

1.8 

4.2 

1.5 

2.  31 

n.  d. 

0.  20 

0.  97 

3.02 

4.  07 

1.  48 

1.42 

1.08 

0.52 

1.30 

4.15 

3.  98 

4.  86 

0.08 

0.04 

0.  07 


INFERIOR  ANALYSES. 


385 


RHYOLITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Blue  Mountain,  Silver 
Cliff,  Colorado. 

L.  G.  Eakins. 

Hyampom,  Trinity 
County,  California. 

G.  Steiger. 

Willard’s  Creek, 

Lassen  County, 
California. 

G.  Steiger. 

Berkeley,  California. 

C.  Palache. 

Pinto  Peak,  Nevada. 

E.  Hart. 

Tablon  de  Itulgache, 
Ecuador. 

A.  Lagorio. 

Kaldadalur,  Iceland. 

R.  Breon. 

Hrafntinnuh  raun, 

Hecla,  Iceland. 

H.  Backstrom. 

Namshraun,  Iceland. 

H.  Backstrom. 

Arran,  Scotland. 

J.  H.  Player. 

• 

The  Coquet,  Cheviot 
Hills,  Scotland. 

T.  Wraller. 

Cwm-Silyn, 

Caernarvon,  Wales. 

Acton  and 
Hewitt. 

Pen-y-foel,  St.  Davids, 
Wales. 

C.  Gibbins.  , 

FeS°  0. 90 

Pen-y-foel,  St.  Davids, 
Wales. 

C.  Gibbins. 

Cader  Idris,  Wales. 

T.  H.  Holland. 

Carn  Gelli, 
Pembrokeshire, 

W  ales. 

F.  E.  Tadman. 

Carn  Pica, 
Pembrokeshire, 

Wales. 

F.  E.  Tadman. 

Tardree,  County 

Antrim,  Ireland. 

J.  H.  Player. 

S  trace 

Cir  Mhor  Dike,  Arran, 
Scotland. 

Under  Thorpe. 

Cir  Mhor  Dike,  Arran, 
Scotland. 

Under  Thorpe. 

Reference. 

Author’s  name. 

Remarks 

W.  Cross, 

17  A.  R.  U.  S.  G.  S., 

II,  p.  322,  1896. 

Rhyolite  tuff. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  228,  1897. 

Rhyolite  tuff. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  192,  1897. 

Rhyolite  tuff. 

C.  Palache, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  67,  1894. 

Soda-rhyolite. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  150, 
p.  162,  1898. 

Liparite. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  444,  1887. 

Obsidian. 

R.  Breon, 

Geol.  d’Islande, 

1884,  p.  29. 

Obsidian. 

H.  Backstrom, 

G.  F.  F., 

XIII,  p.  641,  1891. 

Liparite. 

H.  Backstrom, 

G.  F.  F., 

XIII,  p.  645,  1891. 

Liparite. 

J.  J.  H.  Teall, 

Brit.  Petrog., 

1888,  p.  347. 

Pitchstone. 

C.  T.  Clough, 

Geol.  Chev.  Hills, 

Mem.  G.  S.  Gt.  Br. ,  1888,  p.  25. 

Quartz-felsite. 

A.  Harker, 

Bala  Volcanic  Series, 

1889,  p.  13. 

Rhyolite. 

C.  L.  Morgan, 

Q.  J.  G.  S., 

XL VI,  p.  262,  1890. 

Felsitic  tuff. 

C.  L.  Morgan, 

Q.  J.  G.  S., 

XLVI,  p.  262,  1890. 

Felsite. 

Cole  and  Jennings, 

Q.  J.  G.  S., 

XLV,  p.  435,  1889. 

Eurite. 

F.  R.  C.  Reed, 

Q.  J.  G.  S., 

LI,  p.  177,  1895. 

Felsite. 

F.  R.  C.  Reed, 

Q.  J.  G.  S., 

LI,  p.  178,  1895. 

Felsite. 

J.  J.  H.  Teall, 

Brit.  Petr. 

1888,  p.  348. 

Liparite. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLIX,  p.  545,  1893. 

Quartz-felsite. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLIX,  p.  545  1893. 

Pitchstone- 

porphyry. 

14128— No.  14—03 


25 


380 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


RH  Y  OLITE — Continued. 


No. 

Si02 

A1203 

FeA 

FeO 

MgO 

CaO 

Na,0 

K20 

H20+ 

H,0— 

O 

O 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

30 

A4.  IV 

J  72.50 

11.53 

2. 06 

n.  d. 

2.  72 

1.  79 

3.  37 

5.  24 

0.  70 

99.  91 

31 

A3.  Ill 

|  77.  26 

13.  05 

1.64 

n.  d. 

0.  24 

0.  72 

5.41 

0.65 

0.  55 

0. 15 

99.  67 

2.  637 

32 

B4.  V 

33 

B4.  V 

. 

j  71.44 

12 

90 

n.  d. 

n.  d. 

0.  82 

4.24 

2. 19 

8.  42 

100.  01 

j  75.82 

13.  67 

n.  d. 

0.  05 

0.  58 

1.69 

6.  59 

1.07 

99.  47 

2.  451 

34 

C4.  V 

|  72.98 

14. 13 

n.  d. 

0. 17 

1.  73 

3.44 

3.  45 

3.  85 

99.  45 

2.  408 

25 

B4.  V 

j  71.39 

15. 

57 

n.  d. 

0.51 

1.29 

2.  28 

5.43 

3.  95 

100.  42 

2.  394 

26 

A4.  IV 

|  72.  30 

15.  52 

2.  98 

n.  d. 

trace 

1.25 

2.  95 

4.  73 

none 

99.  73 

27 

€4.  V 

J  71.50 

20.  31 

0.  79 

n.  d. 

n.  d. 

1.51 

1.92 

3.58 

0.  70 

100.  31 

28 

B4.  V 

29 

B,k  V 

j  71.41 

15.07 

3.  68 

n.  d. 

trace 

1.72 

1.18 

2:  95 

4.  05 

100.  06 

|  74.30 

16. 

56 

n.  d. 

0. 16 

1.35 

2.  62 

4.  32 

0.  23 

99.  54 

So 

B4.  V 

j  72.35 

13.97 

1.29 

n.  d. 

0. 46 

0.  72 

3.  58 

5.  38 

1.37 

99.12 

2. 133 

31 

C4.  V 

|  79.  1 

8.9 

1.9 

n.  cl. 

0.7 

trace 

3.9 

3. 1 

0.8 

1.1 

99.5 

32 

B4.  V 

33 

1 

B4.  V 

|  79- 1 

8.2 

1.3 

n.d. 

0.9 

1. 1 

3.4 

2.  2 

(3.8) 

100.0 

1  76.84 

5.  87 

3.92 

0.  87 

0.52 

3.  34 

5.41 

1.69 

0.  73 

99. 19 

34 

D4.  V 

|  70.03 

18.  63 

0.11 

n.  d. 

0. 10 

2.  62 

3. 

15 

4.  28 

99. 12*. 

35 

B4.  V 

J  69.2 

8.3 

5.  4 

n.  d. 

trace 

0.1 

6.9 

2.9 

7.0 

99.8 

36 

C4.V 

j  77.99 

12.  50 

1.20 

n.  d. 

0.09 

1.21 

2. 99 

4. 95 

0.  48 

101.41 

37 

B4.V 

|  77. 50 

12.  83 

1.66 

n.  d. 

0.  24 

1.  50 

3.44 

3. 45 

0. 43 

101. 05 

38 

B4.  V 

39 

B4.V 

j  76.68 

13.  63 

1.44 

n.  d. 

0.  23 

0.99 

2.  85 

4.  91 

0.  36 

101.  09 

1  75. 49 

15. 

27 

n.  d. 

0. 18 

1.26 

2.61 

4. 12 

0.  82 

99.  75 

40 

B4.V 

1  73.  58 

13. 

73 

n.  d. 

0.17 

1.85 

2.  41 

3.  32 

5.  62 

100.  68 

INFERIOR  ANALYSES. 


387 


RHYOLITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Tormore,  Arran, 
Scotland. 

M.  M.  Tait. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLIX,  p.  558,  1893. 

Felsite. 

Altenshausen,  n. 
Magdeburg,  Prussia. 

Bodlander. 

F.  Klockmann, 

Jb.  Pr.  G.  L-A., 

XI,  p.  200,  1892. 

Silicified  tuff. 

Meissen,  Saxony. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  490,  1887. 

Pitchstone. 

Schemnitz,  Hungary. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  448,  1887. 

Liparite. 

Hliniker  Thai, 

Hungary. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  454,  1887. 

Lipari  te- 
pitchstone. 

Hlinik,  Hungary. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.,  P.  M.,  VIII, 
p.  444,  1887. 

Liparite-perlite. 

Conti,  Ponza  Island, 
Italy. 

Aichino. 

V.  Sabatini, 

B.  Com.  G.  Ital., 

XXIV,  p.  246,  1903. 

Rhyolite. 

Montagniello, 

Ponza  Island,  iEolian 
Islands. 

Aichino. 

V.  Sabatini, 

B.  Com.  G.  Ital., 

XXIV,  p.  246,  1893. 

Rhyolite. 

AI2Os  high. 

Cala  d’  Inferno, 

Ponza  Island,  Italy. 

' 

Aichino. 

V.  Sabatini, 

B.  Com.  G.  Ital., 

XXIV,  p.  245,  1893. 

Rhyolite-tuff. 

Lipari  Island, 

./Eolian  Islands. 

■ 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  491,  1887. 

Obsidian. 

Mte.  Campo  Bianco, 
Lipari  Island,  Italy. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M.,  VIII, 
p.  440,  1887. 

Obsidian. 

Comende,  San  Pietro, 
Sardinia. 

S.  Bertolio. 

S.  Bertolio, 

B.  Com.  G.  Ital., 

XXV,  p.  417,  1894. 

Perlite. 

Carloforte,  San  Pietro, 
Sardinia. 

S.  Bertolio. 

S.  Bertolio, 

B.  Com.  G.  Ital., 

XXV,  p.  411,  1894. 

Rhyolite. 

H.20  by  differ¬ 
ence. 

Spalmatore,  San  Pietro, 
Sardinia. 

H.  Fiirth. 

F.  Eigel, 

T.  M.  P.  M.,  VIII, 
p.  67,  1887. 

Rhyolite. 

Alkalies  not  sep¬ 
arated. 

San  Pietro,  Sardinia. 

Boetsch. 

F.  Eigel, 

T.  M.  P.  M.,  VIII, 
p.  70,  1887. 

Obsidian. 

Alkalies  not  sep¬ 
arated. 

Pescetti,  San  Pietro, 
Sardinia. 

S.  Bertolio. 

S.  Bertolio, 

B.  Com.  G.  Ital. 

XXVII,  p.  186,  1896. 

Perlite. 

Cap  Marsa,  Menerville, 
Algeria. 

Duparc  and 

Pearce. 

Duparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  2,  p.  77,  1900. 

Liparite. 

Sidi  Zerzor,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phys.  Gen., 

XXIII,  No.  2,  p.  115,  1900. 

Liparite. 

Cap  Marsa,  Menerville, 
Algeria. 

Duparc  and 

Pearce. 

Duparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  2\  p.  77,  1900. 

Liparite. 

. 

Bon  Ivonfor,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc.  Pearce,  and  Ritter, 
Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  2,  p.  26,  1900. 

Liparite. 

Sidi  Zerzor,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Phvs.  Gen., 
XXXIir,  No.  2,  p.  115,  1900. 

Liparite. 

388 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


RHYOLITE— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na-jO 

K20 

H20+ 

H20— 

o 

o 

Ti02 

J\A 

MnO 

Sum 

Sp.  gr. 

41 

1  70.  56 

12.  80 

1.96 

n.  d. 

0.  50 

1.70 

2. 18 

4.  28 

6.30 

0.  28 

I  0.06 

100.  62 

A4,  IV 

1 

42 

1  74. 87 

14.  23 

1.  75 

n.  d. 

1.16 

1.99 

3.  03 

2.  35 

1.60 

100.  98 

B4.  V 

1 

43 

75.  36 

14.  21 

0. 13 

n.  d. 

trace 

0.  84 

4.  78 

2.  72 

1.09 

99.13 

B3.  IV 

1 

44 

1  75.51 

14.  30 

1.01 

n.  d. 

0.  24 

1.81 

1.21 

2.89 

2.  84 

99.  81 

B4.  V 

45 

B3.  IV 

1 

|  68. 15 

16.49 

3.26 

none 

none 

4.  01 

3.  88 

1.  59 

1.82 

0.  26 

99. 46 

2. 107 

18° 

.. 

1 

A4.IV 

2 

C4.  V 

3 

D4.V 

4 

B4.V 

5 

D4.  V 

6 

B4.V 

7 

D4.V 

8 

A4.IV 

9  • 
D?3.  V? 

10 

A4.IV 

11 

A3.  Ill 
12 

A3.  Ill 

13 

A4.  IV 

14 

C4.  V 


SYENITE. 


|  63.  02 

14.  87 

6.53 

n.  d. 

0. 95 

1.12 

5.  85 

5.62 

1.45 

% 

0.46 

99.  87 

j  62. 96 

13.  45 

3.  54 

n.  d. 

0.  61 

1.28 

5.  46 

5. 19 

2.  77 

5.29 

100.  55 

|  59.  48 

13.46 

6.  71 

n.  d. 

1.64 

1.83 

11.67 

6.  03 

0.  20 

0.17 

101. 19 

j  54.  15 

18.92 

6.  79 

n.  d. 

1.90 

3.  72 

5.'  47 

8.  44 

n.  d. 

99.81 

j  53. 80 

19.  20 

n.  d. 

7.60 

4.  80 

5.  70 

2.16 

5.08 

’ 

1.28 

0.  77 

1.20 

101. 59 

1 

j  62.  52 

14. 13 

7,  38 

n.  d. 

1.50 

3.36 

6.  25 

3.05 

1.20 

99.  39 

|  59.92 

16.  07 

8.  76 

n.  d. 

2.07 

4.  56 

3.02 

2.  82 

0.  67 

97,89 

|  56.  79 

16.  64 

9.58 

n.  d. 

2.  63 

5. 12 

5.  30 

2.55 

1.27 

99.  88 

j  55. 00 

20.  81 

3.  29 

3.  83 

2.  33 

5.  44 

5.  87 

0. 16 

0.55 

97.  28 
(100.  28) 

J  58.  80 

16.  84 

2.  04 

n.  di 

2.  75 

0.  70 

5.41 

4. 14 

2.  79 

100.  35 

|  47.  05 

18.  52 

5.91 

3.11 

4.  24 

4.  71 

3.  58 

1.83 

2.  70 

100.  23 

1  43.  33 
i 

17.  88 

6.  80 

4.  46 

4.99 

2. 18 

3.  53 

1.02 

3.36 

100.  69 

j  61.97 

15. 11 

6.  95 

n.d. 

4.  05 

2.  87 

4.01 

2.  43 

2.98 

0.  08 

100.  41 

j  61.40 

16.  66 

7.  46 

n.  d. 

3.65 

2.  08 

4.  75 

2.  93 

0.  76 

1.54 

101.43 

INFERIOR  ANALYSES. 


389 


RHYOLITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

. 

Reference. 

.1 

1 

Author’s  name. 

Remarks. 

Urgub,  Asia  Minor. 

Schwager. 

L.  v.  Ammon, 
cf,  N.  J.  1900, 

II,  p.  61. 

Liparite  tuff. 

Derike, 

n.  Teheran,  Persia. 

E.  Drasche. 

C.  v.  John, 

Jb.  Wien,  G.  R-A., 

XXXIV,  p.  115,  1884. 

Porphyry. 

Marekanka  River, 
Kamtchatka. 

P.  Wenjukoff. 

P.  Wenjukoff, 
cf.  N.  ,T.,  1891, 

I,  p.  281. 

Liparite  glass. 

Tweed  River, 

New  South  Wales. 

W.  F.  Smeeth. 

W.  F.  Smeeth, 

J.  R.  Soc.  N.  S.  W., 

XXVIII,  p.  311,  1894. 

Pitchstone. 

Bondi,  n.  Sydney, 

New  South  Wales. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 

XX,  p.  236,  1887. 

Pumice. 

Floated  block. 

SYENITE. 


Beekmantown, 

Clinton  County, 

New  York. 

E.  W.  Morley. 

H.  P.  Cushing, 

B.  G.  S.  A., 

IX,  p.  248,  1898. 

Syenite-porphyry. 

Fourche  Mountain, 

Little  Rock, 

Arkansas. 

R.  N.  Brackett. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S.,  1890, 

II,  p.  99,  1891. 

Quartz-syenite. 

A1203  low. 

MnO  high. 

Sawtooth  Mountains, 
Transpecos,  Texas. 

A.  Osann? 

A.  Osann, 

T.  M.  P.  M., 

XV,  p.  428,  4895. 

Syenite. 

Alkalies  high. 
A1203  low. 

Cl 

0. 42 

South  Boulder  Creek, 
Montana. 

G.  P.  Merrill. 

G.  P.  Merrill, 

Proc.  U.  S.  Nat.  Mus. 

XVII,  p.  672,  1895. 

Syenite. 

Rochail,  Lac  Lauvitel, 
France. 

P.  Termier? 

P.  Termier, 

(  R 

CXXIV,  p.  319,  1897. 

Mica-syenite. 

Vettakollen,  Kristiania, 
Norway. 

Kjerulf. 

Cf.  W.  C.  Brogger, 

Z.  K., 

XVI,  p.  50,  1890. 

Akerite. 

/ 

Barne  Kjern  See, 
Vettakollen,  Nor¬ 
way. 

Kjerulf. 

Cf.  W.  C.  Brogger, 

Z.  K., 

XVI,  p.  50,  1890. 

Akerite. 

Vettakollen,  Kristiania, 
Norway. 

Kjerulf. 

Cf.  W.  C.  Brogger, 

Z.  K., 

XVI,  p.  50,  1890. 

Akerite. 

Ullernas,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K., 

XVI,  p.  49,  1890. 

Akerite. 

KaO=3.16? 

FeSo 

CaC03 

3. 13 

3. 75 

Vakkero,  Kristiania 
Fjord,  Norway. 

G.  Forsberg. 

W.  C.  Brbgger, 

Z.  K., 

XVI,  p.  64,  1890. 

Mica-syenite- 

porphyry. 

Center  of  dike. 
Not  fresh. 

FeS, 

CaC03 

1.95 

6. 63 

Vakkero,  Kristiania 
Fjord,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K., 

XVI,  p.  64,  1890. 

Mica-syenite- 

porphyry. 

1  foot  from  bor 
der  of  dike. 
Not  fresh. 

FeS>2 

CaC03 

3.00 

10.34 

Vakkero,  Kristiania 
Fjord,  Norway. 

G.  Forsberg. 

W.  C.  Brogger, 

Z.  K., 

XVI,  p.  64,  1890. 

Mica-syenite- 

porphyry. 

Border  of  dike. 
Not  fresh. 

Rothschbnberg,  Deutsch- 
enbroda,  Saxony. 

J.  M.  C.  Hender¬ 
son. 

J.  M.  C.  Henderson, 

Z.  D.  G.  G., 

XL VII,  p.  539,  1895. 

Mica-syenite. 

S. 

0. 20 

Rothschbnberg,  Deutsch- 
enbroda,  Saxony. 

Fritsch  and  Vena¬ 
tor. 

J.  M.  C.  Henderson, 

Z.  D.  G.  G., 

XLVII,  p.  539,  1895. 

Mica-syenite. 

Not  fresh. 

390 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


S  Y  ENITE— Continued. 


^No. 

Si02 

ai2o3 

Fe203 

FeO 

MgO 

CaO 

Na20 

K,0 

H20+ 

H20- 

C02 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

15 

1  57.  63 

16.  47 

5.  37 

n.  d. 

4.  44 

5.25 

5. 15 

3. 12 

0.  45 

2.  14 

* 

100.  97 

B4.  V 

I 

16 

62.52 

23.54 

2.15 

1.38 

0.  26 

1.  65 

4. 16 

4.  02 

0.03 

99.  71 

C3.  V 

1 

17 

1  48.  94 

15.89 

n.d. 

14.  25 

1.27 

8.  76 

5.20 

3.  82 

1.  13 

100.  56 

B4.  V 

1 

18 

i  54.  43 

20.  57 

4.  52 

n.  d. 

3.  47 

5.  89 

5.  30 

4.98 

0.  69 

99.  85 

C4.  V 

1 

MONZONITE. 


1 

Al.  I 

J  71.14 

16.  24 

0.  94 

0. 16 

1. 12 

0.25 

0.  07 

4.96 

2.  74 

0.  49 

none 

0.  75 

0.32 

trace 

99.51 

2 

B4.  V 

j  57. 11 

17.00 

12.48 

n.  d. 

1.  78 

3.  99 

3.  96 

2.  59 

n.  d. 

1.59 

100.  50 

3 

C3.  V 

J  49. 25 

16.97 

15.21 

n.  d. 

3.00 

7.  17 

4.91 

2.01 

0.  30 

trace 

1.41 

0.  76 

100.  99 

PORPHYRY. 


1 

i  63.  85. 

17.51 

1.94 

0.  55 

n.  d. 

5.  67 

0.  25 

4.  77 

1.02 

i 

3.  70 

99.  88 

B4.  V. 

1 

2  ' 

1  68.40 

14.  07 

7.15 

n.  d. 

3.  21 

1. 10 

5.  09 

1.70 

100.  72 

B4.  V. 

J 

3 

. 

l  63.4 

17.9 

8.4 

n.  d. 

1.  4 

1.02 

3.  96 

4.2 

0.  72 

trace 

101.00 

B4.  V. 

1 

4 

1  62.3 

15.  7 

6.  7 

n.  d. 

3.1 

2.1 

3.  77 

4.21 

1.30 

99.18 

C4.  V. 

J 

5 

1  62.3 

14.1 

8.2 

n.  d. 

3.4 

1.3 

4.4 

3.5 

9  9 

trace 

99.  40 

B4.  V. 

J 

6 

1  62.  06 

13.7 

8.9 

n.  d. 

1.4 

1.05 

5. 19 

6.0 

1.41 

trace 

99.  71 

B4.  V. 

1 

7 

1  61.07 

11.8 

13.1 

n.  d. 

1.9 

1.  99 

2.8 

5.  5 

1.  6 

trace 

99.  76 

B4.  V. 

J 

8 

1  59.5 

11.8 

13.1 

n.  d. 

2.7 

2.  2 

3.  96 

4.  32 

1.55 

trace 

99. 13 

C4.  V. 

J 

9 

1  54.0 

18.9 

7.8 

n.  d. 

0.7 

3.8 

6,  5 

3.9 

2.3 

2.0 

0.4 

100.3 

B4.  V. 

1 

10 

1  67.  40 

15.62 

3. 15 

n.  d. 

0.  56 

1.87 

2.51 

7.10 

0.  50 

98.  71 

D4.  V. 

J 

INFERIOR  ANALYSES. 


391 


SYENITE — Continued. 


1 

Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

s. 

0.95 

Triebischbach,  Roth- 
schonberg,  Saxony. 

Fritsch  and  Yena- 
tor. 

J.  M.  C.  Henderson, 

Z.  D.  G.  G., 

XL VII,  p.  543,  1895. 

Mica-syenite. 

Not  fresh. 

Ditro,  Siebenburgen, 
Hungary. 

J.  Szadeczkv. 

J.  Szadeczkv, 
of.  N.  J.,  1901, 

I,  p.  402. 

Nordmarkite. 

AL03  high. 

Zr02 

1.30 

Ditro,  Siebenburgen, 
Hungary. 

Not  stated. 

Y.  C.  Butureanu, 

Bui.  Soc.  Sci.  Bukarest,  1897, 
p.  278. 

Syenite. 

Vitosa  Mountain,  Sofia, 
Bulgaria. 

L.  Dimitrow. 

L.  Dimitrow, 

Ds.  Wien  Akad, 

LX,  p.  493,  1893. 

Pyroxene-syenite. 

A1203  high. 

MONZONITE. 


so:! 

V.,0:, 

BaO 

SrO 

0.26 

0.02 

0. 05 
trace 

Tintic  Iron  Mine,  Tintic 
district,  Utah. 

H.  N.  Stokes. 

Tower  and  Smith, 

19  A.  R.  U.  S.  G.  S., 

Ill,  p.  661,  1899. 

Altered  monzonite. 

Cf.  Nos.  7  and  8 
harzose. 

Farsund,  Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb.,  1896, 

No.  5,  p.  124. 

Quartz-monzonite. 

Dignaes,  Gran,  Norway, 

Damm  and  L. 
Schmelck. 

W.  C.  Brogger, 

Q.  J.  G.  S., 

L.,  p.  19,  1894. 

Olivine-gabbro- 

diabase. 

MgO,  H20,  and 
sum  approxi¬ 
mate.  Olivine- 
monzonite  in 
Eg.  Kg.,  II, 
p.  49,  1895. 

PORPHYRY. 


S  0.29 

CuO  0. 33 

Tamaya,  Chile. 

C.  Schwartz. 

V.  Groddeck, 

Z.  D.  G.  G., 

XXXIX,  p.  250,  1887. 

Porphyry  ? 

Begon,  Entrammes, 
France. 

L.  Bertrand. 

A.  Michel-Levv, 

C  R 

CXXII,  p.  265,  1896. 

Albitophyre. 

Chateau  Noir,  Grandes 
Rousses,  Dauphiny. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

YI,  No.  40,  p.  48,  1894. 

Qrthophyre. 

Lac  du  Cerisier, 

Grandes  Rousses, 
Dauphiny. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

VI,  No.  40,  p.  49,  1894. 

Orthophvre. 

Glacier  St.  Sorlin, 
Grandes  Rousses, 
Dauphiny. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

VI,  No.  40,  p.  48,  1894. 

Orthophyre. 

Chateau  Noir,  Grandes 
Rousses,  Dauphiny. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

YI,  No.  40,  p.  49,  1894. 

Orthophvre. 

Freney,  Grandes 
Rousses,  Dauphiny. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

YI,  No.  40,  p.  49,  1894. 

Orthophyre. 

Chateau  Noir,  Grandes 
Rousses,  Dauphiny. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

VI,  No.  40,  p.  49,  1894. 

Orthophyre. 

Brumun,  Hedemark, 
Norway. 

H.  Backs trom. 

H.  Biickstrom, 

Bih.  Sv.  Vet,  Ak.  Hdl., 

XVI,  Pt.  II,  No.  3,  p.  11,  1888. 

Rhom  ben- 
porphyry. 

Varvnejarvi,  Teisko, 
Finland. 

H.  Berghell. 

J.  J.  Sederholm, 

B.  Com..  G.  Finl., 

No.  6,  p.  68,  1897. 

Orthoclase- 

porphyry. 

392 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS 


PORPHYRY— Continued. 


No. 

Si02 

A1203 

FeA 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

H20- 

C02 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

11 

i  65.  77 

23.  51 

1.95 

n.  d. 

0.  63 

trace. 

1.44 

3.  72 

3.35 

100. 37 

A3. 

III. 

• 

I 

12 

1  50.  38 

36.  08 

1.36 

n.  d. 

0.  66 

0. 15 

1.32 

5. 17 

4.  40 

99.  52 

2.  718 

A3. 

III. 

I 

13 

i  66.  42 

16.  76 

1.22 

0.  62 

0.  37 

0.  32 

1.26 

12.  55 

1.05 

0. 03 

0.05 

trace 

101.  36 

2.  56 

C2. 

IV. 

J 

14 

1  58.  74 

14.  96 

n.  d. 

8.  75 

1.59 

3.  68 

3.  22 

3.  60 

2.  87 

2.  62 

100.  03 

A4. 

IV 

1 

15 

1  56.  98 

19.  01 

n.  d. 

9.  75 

0.  99 

3.  60 

3.  58 

3.91 

1.31 

1.71 

trace 

100.  84 

B4. 

V 

j 

16 

50.  78 

18.  70 

7.  28 

1.23 

o.  33 

1.57 

1.  83 

7.  36 

4.  20 

0.  23 

1.32 

0.  22 

100. 11 

C2. 

V 

1 

17 

\  49.  68 

19. 11 

8.  45 

0.  50 

3.  73 

0.  33 

0.  79 

8.  45 

7.30 

0.05 

1.42 

0.  21 

100. 19 

C2. 

V 

1 

18 

46.  96 

15.97 

1.92 

7.35 

8.  97 

2.  72 

1.65 

5.  55 

5. 58 

2. 14 

1.35 

0.  26 

100.  69 

2.  664 

A2. 

II 

1 

- 

19 

44. 17 

13.  49 

1.69 

7.  75 

4.  88 

8.  23 

1.36 

5.  92 

3.  43 

6.  03 

2.  66 

0.65 

100.  69 

2.  743 

A2. 

II 

1 

20 

59.  82 

17.  89 

4.  43 

n.  d. 

1.  74 

3.  81 

4.  27 

6.  21 

2.01 

trace 

100. 18 

A 4>.  IV 

J 

KERATOPHYRE. 


1 

C4.  V 

1 

i  53.  40 

20.  82 

3.  92 

n.  d. 

1.53 

7.05 

3.  79 

2.  97 

V 

6.  57 

- 

100.  05 

2 

A4.  IV 

1  67. 16 

14.  53 

4.17 

n.  d. 

0.  41 

1.26 

5.  55 

6. 10 

1. 10 

100.  28 

3 

C4.  V 

|  73.  00 

15.61 

n.  d. 

1.95 

n.  d. 

0.  79 

4.95 

0.  88 

1.06 

99.00 

2.  63 

4 

A3.  Ill 

j  63.  21 

19.  92 

1.74 

3.29 

1.63 

0.  78 

5.  06 

1.42 

2.28 

0.  63 

trace 

trace 

99.  96 

5 

B3.  V 

j  56.  50 

18.14 

3. 12 

2.  86 

1  22 

3.  38 

5.28 

1.60 

1.26 

5.11 

0.  85 

99.  32 

6 

C3.  V 

j  79.  36 

11.54 

0.  63 

n.  d. 

n.  d. 

0.  50 

6.  20 

0.  51 

0.  95 

1.35 

101.  04 

2.  620 

7 

B4.  V 

|  76. 05 

14.  75 

1.55 

n.  d. 

0. 95 

0.  07 

0.39 

3.  26 

2.  65 

trace 

99.  67 

2.  702 

INFERIOR  ANALYSES. 


393 


PORPHYRY— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Bilsburg,  Eder  River, 
Westphalia. 

Bomer. 

O.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  568,  1893. 

Porphyry. 

Metamor¬ 

phosed. 

Dried  at  105°. 

s 

trace 

Oberhunden, 

Westphalia. 

Bomer. 

O.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  573,  1893. 

Porphyry  tuff. 

Altered. 

Dried  at  105°. 

so3 

0.71 

Riidesheim,  Rhine, 

Rh.  Prussia. 

K.  Llampe. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L.-A., 

V,  p.  534,  1885. 

Porphyry. 

Metamor¬ 

phosed. 

Weinberg,  Upper  Lau- 
sitz,  Prussia. 

Y.  Steger. 

V.  Steger, 
cf.  N.  J.,  1887, 

I,  p.  42. 

Porphyry. 

Weinberg,  Upper  Lau- 
sitz,  Prussia. 

V.  Steger. 

V.  Steger, 
cf.  N.  J.,  1887, 

I,  p.  42. 

Porphyry. 

so3 

0.06 

Geschberg,  Bl.  Wahlen, 
Prussia. 

Boettcher. 

H.  Grebe, 

Erl.  G.  Kte.  Pr.,  Bl.  Wahlen, 
p.  33,  1889. 

A  ugi  te-o  r  th  0  ph  y  r . 

AI3O3  high. 

Iron  oxides? 

Not  fresh. 

S03 

0.17 

Audeborn,  Bl.  Wahlen, 
Prussia. 

Boettcher. 

H.  Grebe, 

Erl.  G.  Kte.  Pr.,  Bl.  Wahlen, 
p.  33,  1889. 

Augite-orthophyr. 

A1203  high. 

Iron  oxides? 

Not  fresh. 

S03 

0.27 

'  Pfeffelbach,  St.  Wendel, 
Harz  Mountains. 

Hesse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L.-A., 

X,  p.  316,  1892. 

Augite-syenite- 

porphyry. 

Not  fresh. 

so3 

0. 39 

Neuwerk,  Harz  Moun¬ 
tains. 

Steffen. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L.-A., 

VI,  p.  213,  1886. 

Augite-orthophyr- 

mandelstein. 

Not  fresh. 

Zalas,  n.  Cracow, 

Galicia. 

R.  Zuber. 

R.  Zuber, 

Jb.  Wien.  G.  R.-A., 

XXV,  p.  745,  1885. 

Porphyry. 

KERATOPHYRE. 


Shelburne  Point,  Bur¬ 
lington,  Vermont. 

Morrison. 

Kemp  and  Marsters, 

B.  U.  S.  G.  S.,  107, 
p.  20,  1893. 

Bostonite. 

Indian  Point,  Upper 
Chateaugay  Lake, 

New  York. 

A.  S.  Eakle. 

A.  S.  Eakle, 

A.  G.,  XII, 
p.  34,  1893. 

Bostonite. 

f 

S03  0. 76 

Baraboo,  Wisconsin. 

C.  F.  Austin. 

« 

S.  Weidmann, 

B.  Un.  Wise.,  Sci.  Ser., 

I,  p.  47,  1895. 

Quartz-keratophyre. 

Mehaigne,  Belgium. 

A.  F.  Renard. 

Vallee-Poussin  and  Renard, 
cf.  N.  J.,  1899, 

II,  p.  65. 

Keratophyre  tuff. 

Lake  Maena,  Gran, 
Norway. 

V.  Schmelck. 

W.  C.  Brogger, 

Q.  J.  E.  S., 

L,  p.  26,  1894. 

Bostonite. 

Not  fresh. 
Maenaite  in  Eg. 
Kg.  Ill,  p. 
207,  1899. . 

Kupferberg,  Wipper- 
fiirth,  Westphalia. 

Bomer. 

O.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  606,  1893. 

Keratophyre. 

S  trace 

Schameder,  Westphalia. 

Bomer. 

O.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  667,  1893. 

Keratophyre  tuff. 

yy4 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


KERATOPHYRE — Continued. 


No. 


8 

B4.  V 

9 

A2.  II 

10 

A4.  IV 
11 

B4.  V 
12 

A4.  IV 

13 

A4.  IV 

14 

D4.  V 

15 

A4.  IV 

16 

04.  V 

17 

C4.  V 

18 

C3.  V 

19 

C3.  V 

20 

B4.  V 
21 

C4.  V 
22 

D4.  V 

23 

C4.  V 

24 

C4.  V 


Si02 

AIA 

FeA 

FeO 

MgO 

CaO 

Na20 

K20 

|  75.  60 

13.  46 

3. 14 

n.  d. 

0.61 

0.  25 

0.  79 

2.  71 

j  73.62 

11.87 

0.  66 

1.21 

0.  87 

3.11 

0.  37 

3.25 

|  72.  83 

14.  92 

2.  28 

n.  d. 

0.32 

2.  07 

2.  87 

1.46 

l72-38 

13.  63 

2.83 

n.  d. 

trace 

1.10 

3.64 

1.37 

j-  71.  00 

17.  49 

2.  55 

n.  d. 

0.  87 

0.  25 

1.45 

3.30 

) 

•  70. 10 

P 

18.  93 

2.62 

ii.  d. 

0.  41 

0.  38 

2.  75 

1.93 

J-  65.  53 

22.  75 

1.79 

n.  d. 

0.18 

0.  26 

0.  74 

3. 16 

|  64.  04 

20.  98 

3. 15 

n.  d. 

1.17 

0.  39 

0.  43 

5.  22 

|  63.05 

25. 14 

1.23 

n.  d. 

0.  36 

0.  68 

5.  79 

1.81 

4- 

co 

GO 

32.  70 

1.86 

n.  d. 

0.  20 

0.35 

1.30 

5.  40 

j  49.  38 

22.  31 

3.  60 

10. 96 

3.35 

trace 

4. 16 

0.59 

j  70.92 

14.  62 

3.  74 

0.  61 

0.  43 

1.  75 

5.  00 

2.38 

^ - 

✓ - ' 

1  76.  23 

15 

.11 

n.  d. 

0. 12 

0.  60 

5.  38 

1.90 

|  74.92 

13.  21 

0.  87 

n.  d. 

0.  71 

0.  40 

4.  92 

0.  66 

j  74.  27 

13.  59 

2.  03 

n.  d. 

1.32 

0.  73 

4.  66 

0.  81 

J  71.39 

10.20 

6.  52 

n.  d. 

0.  91 

0.  61 

5.  28 

2.  21 

J  70.  50 

15.  90 

1.03 

n.  d. 

1.42 

1.  57 

4.  90 

2.  70 

H20+ 

H20- 

C02 

Ti02 

P2O5 

MnO 

Sum 

Sp.  gr. 

2.  75 

99. 31 

2.  638 

2.62 

2. 42 

0.  06 

0.  07 

100.  33 

2.695 

2.  00 

1.23 

100.  27 

2.  676 

1.87 

1.23 

1.69 

99.  74 

• 

2.651 

2.  96 

0. 15 

trace 

100.  02 

2.684 

2.  70 

trace 

0.  35 

100. 17 

2.  662 

3.  51 

97.  92 

2.  711 

3.94 

trace 

0.  38 

99.  70 

2.  670 

2.  30 

100.  36 

2.  638 

4.  22 

100.  41 

2.  742 

4.  50 

0.  83 

99.  82 

2.  740 

1.60 

- 

0.  38 

0.  25 

101.  68 

1.17 

100.  41 

3.  57 

99.  26 

1.42 

98.  83 

1.94 

99.  07 

1.21 

99.  23 

INFERIOR  ANALYSES. 


395 


KERATOPHYRE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Steimel,  Westphalia. 

Bbmer. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  657,  1893. 

Keratophyre  tuff. 

S03  0.20 

Steimel,  Westphalia. 

Gremse. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  651,  1893. 

Keratophyre  tuff. 

Not  fresh. 

Hofolke,  Westphalia. 

Bbmer. 

O.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  691,  1893. 

Keratophyre  tuff. 

S  trace 

Wiebelsaal,  Westphalia. 

Bbmer. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  616,  1893. 

Ivugel-porpliyr. 

MnO  high. 

Kromel,  n.  Schameder, 
Westphalia. 

Bbmer. 

0.  Miigge, 

N,  J.  B.  B., 

VIII,  p.  668,  1893. 

Keratophyre  tuff. 

Steimel,  Westphalia. 

Bbmer. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  651,  1893. 

Keratophyre  tuff. 

Ziischen,  Westphalia. 

Bbmer. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  676,  1893. 

Keratophyre  tuff. 

Steimel,  Westphalia. 

Bbmer. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  651,  1893. 

Keratophyre  tuff. 

Kupferberg,  Wipper- 
fiirth,  Westphalia. 

Bbmer. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  606,  1893. 

Keratophyre. 

Al20g  high. 

Siesel,  n.  Pasel,  West¬ 
phalia. 

Bbmer. 

0.  Miigge, 

N.  J.  B.  B., 

VIII,  p.  622,  1893. 

Quartz-keratophyre. 

Altered. 

AL03  high. 

S  0.14 

Kupferberg,  Wipper- 
fiirth,  Westphalia. 

Bbmer. 

0.  Miigge, 

N.  LB.  B., 

VIII,  p.  606,  1893. 

Spherulitic  kerato- 
phyr. 

Altered? 

No  CaO? 

AL03  high? 

Near  Premyslan,  Moldau 
Thai,  Bohemia. 

Kolar. 

J.  Klavana, 
cf.  N.  J.,  1898, 

I,  p.  485. 

Felsophyrite. 

Ai'-Danil,  Crimea, 

Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Keratophyre. 

Monastery  St.  George, 
Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXIII.  p.  27.  1897. 

Keratophyre. 

Monastery  of  St.  George, 
Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Keratophyre. 

Seragoz,  Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Taurite. 

Cape  Parthenit,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Keratophyre. 

396 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


MINETTE. 


No. 

Si02 

A1A 

Fe2Os 

FeO 

MgO 

C’aO 

Na2G 

k2o 

H20+ 

h2o- 

co2 

Ti02 

p2o5 

MnO 

Sum 

Sp.  gr. 

1 

1  46. 11 

14.  75 

2.20 

4. 51 

5.  73 

7.  82 

1.29 

3.84 

2.  90 

7.32 

0.  84 

trace 

99.  65 

2.  904 

A2.  II 

J 

2 

[  40.  71 

19.  46 

7.  46 

6.  83 

6.  21 

11.83 

1.80 

3.  26 

1.  53 

0.  74 

0. 18 

100.  01 

A3.  Ill 

3 

1 

52.  70 

15.  07 

8. 41 

n.  d. 

7.23 

5.  33 

3. 12 

4.  81 

2.  38 

1.71 

1 

100.  76 

A4.  IV 

J 

4 

i  47.  46 

18.  99 

8.  66 

n.  d. 

8.  78 

5.41 

1.  72 

5.  67 

3.37 

100.  06 

A4.  IV 

j 

TRACHYTE. 


1 

I 

' 

}  65.  76 

17. 18 

trace 

2.  30 

2.  22 

3. 14 

5.  60 

3.46 

99.  66 

A4.  IV 

1 

1  65.  56 

18.  24 

0.  72 

2.  58 

2.  08 

3.94 

6.  50 

1.12 

100.  74 

- 

A4.  IV 

I 

3 

I 

v 

61.  82 

19.  86 

n.  d. 

0.  51 

1.78 

2.  38 

1.31 

11.47 

99. 13 

C4.V 

1 

4 

l  60.  98 

21. 

69 

n.  d. 

1.33 

1.83 

0.  80 

1.23 

11.96 

/ 

99.  82 

A4.  IV 

1 

5 

] 

\  68.  92 

16.  22 

trace 

1.62 

1.  56 

4.00 

6.  00 

1.60 

99.  92 

A4.  IV 

1 

6 

1  61. 15 

15.  70 

4.  31 

1.12 

3.04 

2.84 

1.54 

2.  22 

7.  05 

0.  69 

0.  75 

trace 

100. 59 

A2.  II 

I 

7 

l  56. 68 

16.  62 

6.  28 

n.  d. 

« 

0.  79 

0.59 

1.03 

11. 18 

3.  28 

0.  22 

0.  73 

1.02 

100.  63 

A3.  Ill 

J 

8 

1  66.  21 

15.  60 

1.95 

1.  85 

5.  93 

1.96 

4.  46 

3.04 

2.  46 

103.  46 

D3.  V 

J 

9 

1  64.49 

16.  88 

6. 16 

n.  d. 

3. 10 

2.45 

2. 19 

3.  89 

0. 55 

trace 

trace 

99.  71 

B4.  V 

I 

10 

1  56.  36 

21.  32 

7.29 

n.  d. 

2.  06 

5.  07 

6.17 

3.  65 

n.  d. 

101.  92 

D4.  V 

j 

11 

|  58.  32 

20.  88 

4. 15 

n.  d. 

1.10 

2. 19 

4.11 

3.  91 

5.  87 

100.  53 

A4.  IV 

1 

12 

i  58. 15 

23.  23 

1.46 

n.  d. 

trace 

2.  40 

6.  93 

6.  63 

1.72 

100.52 

B4.  V 

J 

13 

1  66.  74 

16.  91 

1.95 

0.  62 

0. 15 

1.19 

6.  55 

4. 11 

2.  08 

0.  53 

0.  08 

101.  41 

C2.  IV 

J 

* 

14 

1  61.  01 

18. 45 

2.  09 

0.  80 

;  0.94 

1.91 

7.33 

4.  75 

3.  09 

0. 45 

trace 

101.  25 

2.  562 

C2.  IV 

J 

1 

20° 

INFERIOR  ANALYSES. 


397 


MINETTE. 


Inclusive. 

Locality. 

t 

Analyst. 

Reference. 

Author’s  name. 

SRemarks. 

X  0.97 

S  1.37 

Hull’s  Cove,  Conanicut 
Island,  Rhode  Island. 

L.  Yr.  Pirsson. 

L.  Y.  Pirsson, 

A.  J.  S.,  XLYI, 
p.  375,  1893. 

Minette. 

Not  fresh. 

Franklin  Furnace,  Sus¬ 
sex  County,  New 
Jersey. 

L.  G.  Eakins. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.,  150, 
p.  238,  1898. 

Minette. 

Probablyinetin- 
dase,  if  Ti02 
and  P205  were 
determined. 

Weissenburg,  Weiler, 
Elsass. 

G.  Linck. 

G.  Linck, 

Abh.  G.  Kte.  E.-L.  Ill,  Pt.  I, 
p.  55,  1884. 

Minette. 

Kapelle,  Weiler,  Elsass. 

G.  Linck. 

G.  Linck, 

Abh.  G.  Kte.  E.-L.  Ill,  Pt.  I, 
p.  57,  1884. 

Minette. 

TRACHYTE. 


Devil’s  Pathway, 
Montana. 

J.  E.  Whitfield. 

G.  P.  Merrill, 

A.  J.  S., 

XXXII,  p.  202,  1886. 

Trachyte-obsidian 

dust. 

Little  Sage  Creek, 
Montana. 

J.  E.  Whitfield. 

G.  P.  Merrill, 

A.  J.  S., 

XXXII,  p.  202,  1896. 

Trachyte-obsidian 

dust. 

Bozeman,  Montana. 

F.  W.  Clarke. 

A.  C.  Peale, 

B.  U  S.  G.  S., 

148,  p.  141,  1897. 

Volcanic  dust. 

Fort  Ellis,  Montana. 

F.  W.  Clarke. 

A.  C.  Peale, 

B.  U.  S.  G.  S., 

148,  p.  141,  1897. 

Volcanic  dust. 

Marsh  Greek  Valley, 
Idaho. 

J.  E.  Whitfield. 

G.  P.  Merrill, 

4  J  S 

XXXII,  p.  202,  1896. 

Trachyte-obsidian 

dust. 

S03 

LioO 

0. 18 
none 

TwoOceanPass,  Yellow¬ 
stone  National  Park. 

J.  E.  Whitfield. 

J.  P.  Iddings, 

B.  U.  S.  G.  S., 

148,  p.  132,  1897. 

Trachyte  tuff. 

FeSo 

CuO 

2. 21 
trace 

Los  Cerillos, 

New  Mexico. 

F.  W.  Clarke. 

Diller  and  Clarke, 

B.  U.  S.  G.  S., 

42,  p.  43,  1887. 

Trachyte. 

Not  fresh. 

Puente  del  Inca, 

Cord,  de  Mendoza, 
Argentina. 

R.  Muller. 

A.  Stelzner, 

Btr.  G.  Arg.  Rep., 

I,  p.  183,  18S5. 

Trachyte. 

Sum  high. 

Newtownhead, 

County  Waterford, 
Ireland. 

Jones  and  Rob¬ 
inson. 

F.  R.  C.  Reed, 

Q.  J.  G.  S., 

LYI,  p.  686,  1900. 

Trachyte. 

Alkalies  low. 

La  Quenille, 

Mount  Dore, 
Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C  R 

XXVIII,  p.  1097,  1899. 

Trachyte. 

Bruhl  Thai, 

Laacher  See, 

Rhenish  Prussia. 

W.  Bruhns. 

W.  Bruhns, 
cf.  N.  J., 

1892,  II,  p.  418. 

Trachyte  pumice. 

Not  fresh. 

Laacher  See,  Rhenish 
Prussia. 

W.  Bruhns. 

W.  Bruhns, 

■  cf.  N.  J.,  1892, 

II,  p.  418. 

Trachyte  pumice. 

AL03  high? 

X 

SO., 

SrO 

Li20 

0. 40 

0.10 

trace 

trace 

Block  in  Tuff,  Dachberg, 
Rhongebirge. 

Knoevenagel. 

F.  Rinne, 

Jb.  Pr.  G.  L-A., 

VII,  p.  20,  1887. 

Soda-trachvte  (?) 

X 

so, 

LuO 

0. 40 

0.03 

trace 

Block  in  Tuff,  Dachberg, 
Rhongebirge. 

Deicke. 

F.  Rinne, 

Jb.  Pr.  G.  L-A., 

VII,  p.  21,  1887. 

Soda-trachyte  (?) 

58 

70 

17 

80 

20 

80 

30 

22 

26 

36 

97 

44 

76 

65 

38 

34 

17 

,  18 

68 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


TRACH  YTE— Continued. 


A1A  ; 

Fe2Os  i 

FeO 

MgO 

CaO 

Na,0 

KjO  1 

h3o+ 

H20— 

C02 

TiO, 

P2O5 

MnO 

Sum 

Sp.  gr. 

21.  85 

4.  87 

n.  d. 

0.  68 

1.89 

3.51 

5.02 

8.  47 

none 

100.  87 

19.  70 

9.20 

n.  d. 

1.20 

1.92 

2.40 

4.53 

0.  99 

trace 

100.64 

17.40 

10.20 

n.  d. 

trace 

3.  55 

4.64 

0.  43 

trace 

100.  59 

2.  666 

18.  30 

7. 10 

n.  d. 

trace 

4.30 

4.  47 

3.50 

1.85 

trace 

99.  32 

2.  509 

21.40 

8.60 

n.  d. 

trace 

4.  50 

6.  22 

1.42 

trace 

100. 34 

20.  00 

10.  80 

n.  d. 

trace 

5.  22 

3.00 

5.20 

0.  58 

100.  60 

20. 

75 

n.  d. 

1.05 

2.  63 

2.  75 

4.  60 

0.34 

99.  42 

2.  541 

16.  26 

1.41 

3.84 

1.25 

4.  75 

2.  42 

4. 18 

1.87 

1.07 

trace 

100.  27 

2.  481 

16.  05 

1.04 

6. 13 

1.29 

5.50 

1.62 

3.18 

1.57 

0.51 

0. 14 

100. 29 

2.416 

27.  27 

n.  d. 

3. 16 

n.  d. 

3.  99 

1. 11 

1.  65 

3.  38 

0. 14 

100.  06 

17.  65 

0.  63 

7.  50 

1.71 

5.  53 

1.  50 

5.31 

1.82 

0.  42 

0.  09 

100. 13 

2. 451 

18.  60 

2.  09 

4.  48 

4.  75 

6.  76 

_ 

1 . 79 

6.  63 

0.25 

0. 16 

trace 

100.  75 

2.  700 

20.  08 

4.46 

n.  d. 

trace 

2.07 

5.  70 

6.  31 

1.37 

100.  75 

17.  82 

4.46 

* 

n.  d. 

0.61 

2.  35 

5.95 

7.29 

n.  d. 

99.01 

18.  40 

4.33 

n.  d. 

0.  57 

2.24 

5.42 

6.  68 

0.24 

trace 

0.  38 

98.  48 

18. 48 

4.  59 

n.  d. 

0.  77 

2.54 

5. 12 

6.  75 

n.  d. 

0.19 

0.  31 

98.  90 

18.  65 

4.  50 

n.  d. 

0.  59 

2.  62 

4.  82 

7. 12 

0.  81 

0.  20 

98.  65 

18.  29 

4.  63 

n.  d. 

0.68 

2.47 

5.  27 

6.  93 

0.  25 

0.  27 

97.  87 

22. 15 

4.  74 

n.  d. 

1.42 

2.  04 

12.  06 

n.  d. 

0.12 

trace 

101.06 

2. 613 

INFERIOR  ANALYSES. 


399 


TRACHYTE— Continued. 


Inclusive. 


Cl  trace 


Cl  0. 88 


Cl  -  0. 84 


Cl  0. 81 


Cl  0. 17 


Cl  0. 89 


Cl  0.85 


Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Schiffenberg,  Giessen, 
Hesse. 

F.  Roth. 

F.  Roth, 
cf.  N.  J.,  1892, 

II,  p.  418. 

Trach  y  te-pumice. 

Not  fresh. 

Fintaer  Straz,  Eperies 
Mountains,  Hungary. 

Steiner. 

S.  Roth, 

F.  K., 

XIV,  p.  533, 1884. 

Amphibole- 

trachyte. 

AljjOg  high  or 
alkalies  low? 

Krivi  Javor,  Eperies 
Mountains,  Hungary. 

Steiner. 

S.  Roth, 

F.  K., 

XIV,  p.  540, 1884. 

Ainphibole- 

trachyte. 

No  MgO? 

Klauzura,  Eperies 
Mountains,  Hungary. 

Steiner. 

S.  Roth, 

F.  K., 

XIV,  p.  544, 1884. 

Amphibole- 

trachyte. 

No  MgO? 

Josefstollen,  Dubnik, 
Hungary. 

Steiner. 

S.  Roth, 

F.  K., 

XIV,  p.  547, 1884. 

Augite-trachyte. 

A1,03  high. 
Alkalies  not 
separated. 

No  MgO? 

Sosufalu,  Eperies 
Mountains,  Hungary. 

Steiner. 

S.  Roth, 

F.  K„ 

XIV,  p.  541,1884. 

Augite-trachyte. 

A1A  high. 

No  MgO? 

Monte  Amiata,  Tus¬ 
cany,  Italy. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  458,  1887. 

Trachyte. 

Alkalies  low? 

Torre  Alfina,  Lake  Bol- 
sena,  Italy. 

L.  Riceiardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  93. 

Olivine-trachyte. 

Alkalies  low. 
Calc,  with  19.4 
per  cent 
quartz. 

San  Lorenzo,  Lake  Bol- 
sena,  Italy. 

L.  Riceiardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  93. 

Olivine-trachyte. 

Alkalies  low. 
Calc,  with  23.3 
per  cent 
quartz. 

Valle  Vidona,  n.  Lake 
Bolsena,  Italy. 

L.  Riceiardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  101. 

Trachyte  tuff. 

A1203  high. 
Alkalies  low. 

Bolsena,  Italy. 

L.  Riceiardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  97. 

Trachyte. 

Alkalies  low. 

Cf.  No.  1,  vul- 
sinose. 

Fontana  Fiescoii, 
Viterbo,  Italy. 

H.  S.  Washington. 

H.  S.  Washington, 

J.  G., 

IV,  p.  837,  1896. 

Ciminite. 

Al,Oo  high  and 
MgO  low. 

Cf.  No.  5,  cim- 
inose. 

Proeida  Island,  Bay  of 
Naples,  Italy. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  475,  1887. 

Obsidian. 

A1203  high. 

Below  St.  Elmo,  Naples, 
Italy. 

G.  Freda. 

G.  Freda, 
cf.  N.  J., 

1892,  II,  p.  255. 

Trachyte  scoria. 

Monte  Santo,  Naples, 
Italy. 

G.  Freda. 

G.  Freda, 
cf.  N.  J., 

1892,  II,  p.  255. 

Trachyte. 

Rione  Amedeo,  Naples, 
Italy. 

G.  Freda. 

G.  Freda, 
cf.  N.  J., 

1892,  II,  p.  255. 

Trachyte. 

Rione  Amedeo,  Naples, 
Italy. 

G.  Freda. 

G.  Freda, 
cf.  N.  J., 

1892,  II,  p.  255. 

Trachyte. 

Monte  Santo,  Naples, 
Italy. 

G.  Freda. 

G.  Freda, 
cf.  N.  J., 

1892,  II,  p.  255. 

Trachyte. 

Sant’  Elmo,  Naples, 
Italy. 

L.  dell’  Erba. 

L.  dell’  Erba, 
cf.  B.  Com.  G.  Ital., 

XXII,  p.  105,  1891. 

Sanidinite. 

400 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


TRACHYTE— Continued. 


No. 


34 

A4.  IV 

35 

B4.  V 

3(5 

B4.  V 

37 

C4.  V 

38 

D4.  V 

39 

A3.  Ill 

40 

C3.  V 

41 

C4.  V 

42 

C4.  V 

43 

C4.  V 


Si02 

ai2o3 

Fe,03 

FeO 

MgO 

CaO 

Na,0 

K20 

H20+ 

H20— 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr.  i 

1  59. 48 
|1 

16.  87 

8.  55 

n.  d. 

2.30 

5.29 

3.  79 

3.  85 

n.  d. 

$ 

100. 13 

l  71.  5 

16 

.9 

n.  d. 

0.3 

1.2 

6.  5 

2.8 

99.6 

|  60.2 

10.2 

‘ 

11.9 

n.  d. 

2.9 

6.1 

6.0 

3.1 

n.  d. 

100.2 

j  61.49 

20.  82 

5.  03 

n.  d. 

0.  51 

1.98 

3.10 

7.03 

n.  d. 

0.  03 

0.  01 

100.0 

1  65.  5 

20.0 

5.0 

n.  d. 

2.6 

0.7 

0.4 

7.0 

0.8 

trace 

102.0 

r 

j  63.  63 

17.99 

5.84 

trace 

none 

4.21 

4.  25 

3.  81 

0. 15 

0.  69 

100.  57 

2.  307 
(pow¬ 
der) 

j  70.34 

10. 13 

0.  56 

4.  02 

1.74 

5. 18 

5.  01 

2.  06 

2. 14 

101. 18 

2.  525 

J  61.  38 

20.  60 

2.  57 

n.  d. 

0.  40 

2. 18 

9.  70 

none 

1.98 

1.19 

100.  00 

2.  590 

j  60.69 

17.  75 

3.  83 

n.  d. 

1.43 

1.20 

13. 10 

trace 

0.  79 

1.21 

100.  00 

J  52.18 

20.  00 

5.00 

n.  d. 

1.03 

4.  92 

14.  57 

2.30 

n.  d. 

100.  00 

NEPHELITE-SYENITE. 


1 

1  50.  36 

19.34 

6.  94 

n.  d. 

n.  d. 

3.  43 

7*  64 

7.17 

3.  51 

0.  41 

98.  80 

D4. 

V 

1 

2 

52. 10 

19.  86 

5.  94 

n.  d. 

2.35 

0.  25 

7.  82 

10.  05 

1.43 

99.  80 

A4. 

IV 

J 

3 

] 

• 

\  54. 17 

23.  25 

0.69 

2.  95 

0.  48 

2.  02 

6.  33 

6. 19 

0. 17 

1. 14 

0.  98 

0. 16 

98.  53 

D2. 

V 

J 

4 

l  52.  03 

22.34 

1. 13 

1.63 

0.  67 

2.  09 

8.44 

5.16 

1.79 

1.32 

0.99 

0.  41 

98.  00 

D'2. 

V 

1 

5 

1  55.  41 

19.84 

9.50 

n.  d. 

n.  d. 

3.  86 

5.  97 

5.29 

n.  d. 

99.  87 

B4. 

V 

J 

INFERIOR  ANALYSES. 


401 


TRACHYTE— Continued. 


J  Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Grotta  dei  Palizzi,  Vul- 
cano  Island,  Italy. 

Heidepriem. 

A.  Bergeat, 

Abh.  Munch.  Ak., 

XX,  p.  166,  1899. 

Olivine-trachyte. 

% 

Capo  Rosso,  San  Pjetro, 
Sardinia. 

S.  Bertolio. 

S.  Bertolio, 

B.  Com.  G.  Ital., 

XXV,  p.  418,  1894. 

Trachyte. 

Acqua  Fredda,  Siliqua, 
Sardinia. 

S.  Bertolio. 

S.  Bertolio, 

B.  Soc.  G.  Fr., 

XXIII,  p.  454,  1895. 

Trachyte. 

Golabara  River,  Servia. 

A.  B.  Griffiths. 

A.  B.  Griffiths, 

Q.  J.  G.  S., 

XLII,  p.  566,  1886. 

Trachyte. 

San  Miguel, 

Azores  Islands. 

S.  Traverso. 

S.  Traverso, 

Gior.  Min., 

Y,  p.  197,  1894. 

Augitic  trachyte. 

Bondi,  Sydney,  New 
South  Wales. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 

XX,  p.  235,  1887. 

Pumice. 

Floated  block. 

Tawheterangi,  Hauraki 
Penins,  New  Zea¬ 
land. 

W.  A.  McLeod. 

W.  A.  McLeod, 

Tr.  N.  Z.  Inst., 

XXXI,  p.  490,  1899. 

Hornblende- 

trachyte. 

“Silicified?” 

Lyttleton  Crater,  New 
Zealand. 

Geological  Sur¬ 
vey  of  New 
Zealand. 

H.  Filhol, 

III,  p.  115,  1885. 

Soda-trachyte. 

Alkalies? 

Lyttleton  Crater,  New 
Zealand. 

Geological  Sur¬ 
vey  of  New 
Zealand. 

H.  Filhol, 

III,  p.  115,  1885. 

Soda-trachyte. 

Alkalies? 

Lyttleton  Crater,  New 
Zealand. 

Geological  Sur¬ 
vey  of  New 
Zealand. 

H.  Filhol, 

III,  p.  115,  1885. 

Soda-trachyte. 

Alkalies? 

N  EPHELI TE-S  YENITE. 


Beemerville,  Sussex 
County,  New  Jersey. 

F.  W.  Love. 

J.  F.  Kemp, 

Tr.  N.  Y.  Acad., 

XI,  p.  65,  1892. 

Nephelite-syenite. 

Complete  in 
separate. 

!’<)(; oh  de  Caldas,  Minas 
Geraes,  Brazil. 

J.  Machado. 

J.  Machado, 

T.  M.  P.  M., 

IX,  p.  342,  1888. 

Nephelite-syenite. 

Calculated  from 
two  partial 
analyses. 

Mount  Wichniowaia, 
East  Urals,  Siberia. 

Bourdakow. 

A.  Karpinsky, 

Guide  Ex  c.  VII  Cong.  G.  Int., 
V,  p.  22,  1897. 

Miascite. 

Cf.  No.  38, 
miaskose. 

Lake  Ilmen,  Siberia. 

Bourdakow. 

A.  Karpinsky, 

Guide  Exc.VII  Cong.  G.  Int., 
V,  p.  22,  1897. 

Miascite. 

Cf.  No.  38, 
miaskose. 

Alibert’s  Graphite  Mine, 
Botolgolskij-Golez, 
Siberia. 

Alexejew. 

L.  Jaczewski, 
cf.  N.  J.,  1901, 

II,  p.  75. 

Nephelite-syenite. 

Contains  graph¬ 
ite. 

14128— No.  14—03 


26 


402 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


PHONOLITE. 


No. 

1 

A4.  IV 
2 

A4.  IV 

3 

A4.  IV 

4 

B4.  V 

5 

A4.  IV 

6 

A4.  IV 

7 

A4.  IV 

8 

A4.  IV 

9 

A4.  IV 

10 

A4.  IV 
11 

Al.  I 

12 

A4.  IV 

13 

C4.  IV 

14 

D4.  V 

15 

D3.  V 

16 

B2.  Ill 

17 

D3.  V 

18 

B3.  IV 

19 

A4.  IV 

20 

C2.  IV 


Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h2o+ 

h2o- 

CO, 

Ti02 

■PA 

MnO 

Sum 

Sp.  gr. 

j  44.  50 

22.  96 

6.  84 

n.  d. 

1.  65 

8.65 

6.  70 

4.  83 

2.  06 

1.40 

99. 59 

|  58. 98 

16.  03 

n.  d. 

8.27 

trace 

1.11 

8.  28 

4.  90 

2.  07 

0.  51 

100.15 

j  58.  94 

18. 11 

n.  d. 

6.  31 

trace 

0.57 

7.  56 

6.  87 

1.36 

0.  09 

99.  81 

J  58.  65 

16. 45 

4.  08 

n.  d. 

trace 

3.  78 

8.  92 

4.16 

2.  78 

0.  29 

99.11 

|  58.  58 

17. 19 

n.  d. 

7.  69 

none 

0.  88 

9.  26 

4.54 

1.65 

0.  09 

99.  78 

|  58.  56 

18. 14 

n.  d. 

7.  32 

none 

1.56 

8.  49 

5.28 

1.01 

0. 12 

100.  48 

j  58.  38 

20.  40 

n.  d. 

4.  42 

trace 

1.56 

6.  23 

6.  26 

2.  70 

0.  50 

100.  45 

|  57.  45 

20.  38 

n.  d. 

3.  63 

trace 

1.84 

7.  41 

6. 19 

2.76 

0.  36 

100.  02 

j  56.  34 

21.06 

n.  d. 

4.21 

0.  71 

3.  34 

9.  27 

4.  08 

I 

0.  90 

0.07 

99.98 

|  55. 60 

19.  71 

n.  d. 

5.49 

0.  86 

1.  69 

8.  60 

4.  88 

2.  89 

0.34 

100. 06 

J  56.  74 

20.  30 

1.06 

none 

0.  23 

0.  57 

0.  62 

13.  36 

1.15 

0.  33 

0.  58 

0.  25 

none 

100. 10 

J  61.3 

21.2 

n.  d. 

3.9 

0.7 

0.2 

10.2 

2.7 

n.  d. 

100.2 

2.  60 

|  58.  70 

22.  36 

5.  08 

n.  d. 

1.27 

3.  39 

5.13 

5.  45 

n.  d. 

trace 

101. 38 

J  54.97 

25.  84 

6.  29 

n.  d. 

1.13 

5.  21 

4.49 

3.  52 

n.d. 

trace 

101.  45 

|  55. 90? 

22.  70 

4.  20 

n.  d. 

0.  96 

1.  25 

9.  20? 

6.  78 

0.  87 

0.  37 

102. 23 

J  53.33 

21.  33 

2.  66 

1.  75 

0.  63 

1.44 

10.  34 

6.13 

0.  88 

0.  40 

1.15? 

100.  04 

|  53.09 

23.  81? 

3.  92 

n.  d. 

1.13 

1.29 

10.  41 

6.  31 

0.  67 

0.  29 

0.  42 

101.  34 

|  53.  21 

22.  02. 

4. 18 

li.  <1. 

0.91 

1.  33 

10.  37 

6.  41 

0.  81 

0.  35 

0. 42 

100. 01 

J  52. 24 

21.08 

4.41 

n.  d. 

0.  60 

.  2.68 

4.  58 

6.  43 

8.  33 

100.  43 

|  57.  69 

20.44 

2.  32 

1.47 

0.  70 

3. 18 

7.  51 

4.  74 

1.70 

0.  42 

0.  66 

trace 

101. 79 

2.  624 

INFERIOR  ANALYSES. 


403 


PHONOLITE. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Dr.  Thornton’r,  Magnet 
Cove,  Arkansas. 

W.  A.  Noyes. 

J.  F.  Williams, 

A.  R.  Akr.  G.  S.  1890, 

II,  p.  261,  1891. 

Nephelite-por- 

phyry. 

Annie  Creek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

Annie  Creek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

Calamity  Gulch,  Black 
Hills,  South  Dakota. 

J.  D.  Irving. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad.,  * 

XII,  p.  272,  1899. 

Phonolite. 

. 

Annie  Creek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

1 

Annie  Creek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

Annie  Creek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

Whitetail  Gulch,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

Squaw  Creek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

Annie  Creek,  Black 
Hills,  South  Dakota. 

Flintermann. 

J.  D.  Irving, 

Ann.  N.  Y.  Acad., 

XII,  p.  272,  1899. 

Phonolite. 

ZrO<. 

FeSo 

BaO 

SrO 

LioO 

0. 07 

4.65 

0.19 

trace 

trace 

Victor,  Cripple  Creek, 
Colorado. 

W.  F.  Hillebrand. 

W.  C.  Cross, 

B.  U.  S.  G.  S., 

148,  p.  162,  1897. 

Altered  phonolite. 

Megal,  Velay,  France. 

M.  Boule. 

M.  Boule, 

B.  Serv.  Cte.  G.  Fr., 

IV,  No.  28,  p.  152,  1892. 

Phonolite. 

SO* 

trace 

Roc  Blanc,  Mount 

Dore,  Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C  R 

CXxVlII,  p.  1097,  1899. 

Phonolite. 

La  Malvialle,  Mount 
Dore,  Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

( 1  R 

CXXVIII,  p.  1097,  1899. 

Phonolite. 

Foia,  Serra  de 
Monchique,  Portugal. 

Student  of  P. 
Jannasch. 

Kraatz-Koschlau  and  Hackman, 
T.  M.  P.  M., 

XVI,  p.  257,  1896. 

Tinguaite-porphyry. 

Sum  high. 

Si02  and  Na20 
doubtful. 

Foia,  Serra  de 
Monchique,  Portugal. 

Student  of  P. 
Jannasch. 

Kraatz-Koschlau  and  Hackman, 
T.  M.  P.  M., 

XVI,  p.  257,  1896. 

T  inguaite-porphyry . 

MnO  doubtful. 
Na.,0  high? 

Foia, 

Serra  de  Monchique, 
Portugal. 

Student  of  P. 
Jannasch. 

Kraatz-Koschlau  and  Hackman, 
T.  M.  P.  M., 

XVI,  p.  257,  1896. 

Tinguaite- 

porphyry. 

A1203  doubtful. 
Sum  high. 

Foia, 

Serra  de  Monchique, 
Portugal. 

Students  of  P. 
Jannasch. 

Kraatz-Koschlau  and  Hackman, 
T.  M.  P.  M., 

XVI,  p.  257,  1896. 

Tinguaite- 

porphyry. 

Mean  of  3  above, 
doubtful  de¬ 
terminations 
omitted. 

SO:t 

Cl 

trace 

0.08 

Schorenberg, 

Eifel,  Rh.  Prussia. 

K.  Busz. 

K.  Busz, 

Vh.  Nh.  Ver.  Bonn., 

XL VIII,  p.  .254,  1891. 

Phonolite  tuff. 

X 

S03 

Cl 

0.34 

0. 27 

0.35 

Linsberg, 

Rhongebirge. 

E.  Mdller. 

E.  MSller, 

N.  J.  1888, 

I,  p.  97. 

Phonolite. 

404 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


PHONOLITE — Continued. 


No. 


21 

B-l.  V 

22 

B4.  Y 

23 

B4.  V 

24 

B4.  V 

25 

C4.  V 

26 

B4.  V 

27 

D4.  Y 

28 

D4.  V 

29 

C3.  V 

30 

C4.  V 


1 

A4.  IV 
2 

A4.  IY 

3 

B4.  V 

4 

B4.  V 

5 

A4.  IY 

6 

B4.  Y 

7 

D3.  V 


Si02 

AlA 

Fe203 

FeO 

MgO 

CaO 

Na./) 

K20 

H20+ 

HjO— 

co2 

TiO, 

PA 

MnO 

Sum 

Sp.  gr. 

|  56.  72 

21.04 

n.  d. 

4.  63 

1.13 

4. 13 

• 

4.33 

6.  28 

1.74 

100.00 

j  56.  47 

18.  66 

n.  d. 

5.  83 

trace 

4.  79 

7.  81 

4.  87 

100.  00 

j  52.  03 

20.  00 

n.  d. 

5.  90 

1.52 

4.  42 

9.30 

5.  22 

1.  32 

0.  22 

99.  93 

|  50.  70 

20.  32 

n.  d. 

4.  51 

2.  09 

3.58 

5.  05 

6.  23 

5.  68 

100.  00 

I  50.69 

J 

21.85 

n.  d. 

4.51 

0.  25 

. 

7.  77 

11.28 

2.  83 

0.  82 

100. 00 

|  50.  66 

21. 18 

n.  d. 

5.  42 

2.65 

7.  72 

5.  06  , 

3.  77 

2. 15 

0.  25 

100.  00 

j  49.  69 

21.05 

n.  d. 

5.  05 

1.45 

8.  90 

4.  22 

1.33 

5.  23 

1.35 

trace 

98.  68 

j  52.  85 

15.  50 

11.70 

n.  d. 

4.  58 

7.  56 

n.  d. 

7.54 

n.  d. 

* 

102.  73 

J  58.  23 

20.  90 

3.  21 

1.  75 

0.  39 

3.24 

6. 16 

5.  88 

1.60 

trace 

101.  36 

j  51. 15 

29.  38 

n.  d. 

0.34 

4.59 

13.  80 

0.  95 

100.  21 

LEUCITE-TRACHYTE,  ETC. 

f 

j  50.  96 

19.  67 

7.  76 

n.  d. 

0.36 

4.  38 

7.  96 

6.  77 

1.38 

0.  52 

100. 01 

j  52. 16 

20. 14 

6.  45 

n.  d. 

1.54 

4.64 

5.  73 

8. 12 

1.39 

trace 

trace 

100. 17 

j  55.  22 

23.  34 

2. 16 

n.  d. 

0.  36 

2.25 

3. 14 

5.  72 

8.  76 

101.  09 

J  53.  25 

24.  20 

337 

n.  d. 

trace 

1.03 

5.  73 

5.  48 

6.  64 

99.  70 

j  50.  95 

21.  43 

3.  50 

n.  d. 

trace 

4.  87 

6.  81 

6.66 

10.  20 

100.  46 

|  52. 33 

21.42 

n.  d. 

8.14 

1.97 

7.88 

4.  97 

2.  57 

0.  72 

100.  00 

|  59.  69 

16.  22 

1.93 

8.17 

2.  72 

4.  80 

1.03 

3.09 

1.54 

trace 

0.  44 

100.  27 

INFERIOR  ANALYSES. 


405 


PHONOLITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Kirchberg, 

Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 

p.  221. 

Phonolite. 

Not  fresh. 

Recalc,  to  100, 
after  deduct¬ 
ing  3.36  IIjO 
and  4.56  Ca2 
C03. 

Endhalde, 

Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

I).  Kaiserstuhl, 

Leipzig,  1892, 
p.  235. 

Phonolite. 

Not  fresh. 
Recalc,  to  100, 
after  ignition 
and  deducting 
6.82  C02. 

Eichwalde, 

Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 
p.  225. 

Hauyne-phonolite. 

Ignited  before 
analysis. 

S03  not  deter¬ 
mined. 

FeS2 

1.84 

Schelingen, 

Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 
p.  239.' 

Phonolite. 

TiOa  high. 

Not  fresh. 

4.16  II20  and 
6.27  CaCOs  de¬ 
ducted. 

Oberschaff  hausen , 
Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 
p.  232. 

Natrolite-phonolite. 

Not  fresh. 

6.74  H20  and 

2.00  CaC03  de¬ 
ducted. 

S03 

1. 14 

Herberig, 

Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 

p.  218. 

Phonolite. 

Not  fresh. 

6.35  H20  and 

3.07  CaC03de- 
ducted. 

so3 

Cl 

0.41 

none 

•Herberig, 

Kaiserstuhl,  Baden. 

H.  Kohler. 

A.  Knop, 

D.  Kaiserstuhl,  Leipzig,  1892, 
p.  224. 

Hauyne-phonolite. 

Sum  low. 

Not  fresh. 

Le  Braidi,  Monte 
Vulture,  Italy. 

Musaio. 

Cf.  W.  Deecke, 

N.  J.  B.  B., 

VII,  p.  602,  1891. 

Phonolite. 

Greenland  Harbor, 
Kerguelen  Island, 
South  Atlantic. 

C.  Klement. 

A.  Renard, 

Challenger  Reports,  Petr.  Oc. 
Islands,  p.  136,  1889. 

Phonolite. 

Purakanui  Cliffs,  n. 
Dunedin,  New 
Zealand. 

Allen  and  Fitz¬ 
gerald. 

G.  H.  F.  Ulrich, 

Tr.  Aust.  A.  A.  S.. 

Ill,  p.  136,  1891. 

Tinguaite? 

LEUCITE-TRACHYTE,  ETC. 


SO3 

Cl 

trace 

0.25 

Diamond  Jo  Quarry, 
Magnet  Cove, 
Arkansas. 

\V.  A.  Noyes. 

J.  F.  Williams, 

A.  R.  Ark.  G.  S.,  1890, 

II,  p.  276,  1890. 

Leucite-syenite. 

Serra  de  Caldas, 

Sao  Paolo,  Brazil. 

F.  W.  Dafert. 

E.  Hussak, 

N.  J.,  1892, 

II,  p.  149. 

Leucitophyre. 

S03 

Cl 

trace 

0. 14 

Bell,  Laacher  See, 

Rh.  Prussia. 

K.  Busz. 

K.  Busz, 

Vh.  Nh.  Ver.  Bonn., 

XLVIII,  p.  265,  1891. 

Leucitophy  re¬ 
pumice. 

Not  fresh. 

A1203  high? 

Cl 

trace 

Rieden,  Laacher  See, 

Rh.  Prussia. 

K.  Busz. 

K.  Busz, 

Vh.  Nh.  Ver.  Bonn., 

XLVIII,  p.  246,  1891. 

Leucite-phonolite 

pumice. 

Not  fresh. 

A1203  high? 

Cl 

trace 

Rieden,  Laacher  See, 

Rh.  Prussia. 

K.  Busz. 

K.  Busz, 

Vh.  Nh.  Ver.  Bonn., 

XLVIII,  p.  244,  1891. 

Leucitophyre 

pumice. 

Not  fresh. 

Oberrothweil, 
Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl,  Leipzig, 

1892,  p.  229. 

Leucite-phonolite. 

Not  fresh. 

7.00  H20  and 
4.30  CaC03 
deducted? 

so3 

Cl 

0. 04 
trace 

Proceno,  n.  Lake 
Bolsena,  Italy. 

L.  Rieciardi. 

C.  Klein, 

Sb.  Berl.  Akad.,  1888, 
p.  113. 

Leucite-phonolite. 

Alkalies  low 
calc,  with 

21.5  quartz. 

406 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


QUARTZ-DIORITE. 


No. 

Si02 

A1203 

Fe,03 

FeO 

MgO 

CaO 

Na20 

KzO 

h20+ 

H,0— 

C02 

TiO^ 

1*2^5 

MnO 

Sum 

Sp.  gr. 

1 

A4.  IV 

j  56.  69 

15.  48 

6.  22 

n.  d. 

6.53 

7.59 

3.  41 

3. 43 

n.d. 

0.  62 

99.  97 

2 

A4.  IV 

|  56. 18 

22 

79 

n.  d. 

6.  53 

6. 49 

3.  40 

3.  27 

n.d. 

1.60 

100.  26 

3 

D4.  V 

j  57. 50 

23.44 

5. 07 

n.d. 

2.  76 

5.62 

2.  01 

0.  45 

2.  25 

w 

2.  02 

101. 12 

2.  856 

4  • 

Al.  I 

|  60. 26 

15.  73 

1.25 

2.68 

1.82 

5.44 

1.92 

3.71 

2.  54 

0.  33 

3.  99 

0.  42 

0. 12 

0.  04 

100.  40 

5 

Al.  I 

|  59. 76 

14.  45 

1.04 

3.  52 

2.  26 

6.  09 

1.12 

3.  73 

2.  58 

0.  26 

4. 47 

0.  46 

0. 16 

0.  09 

100.  28 

6 

Al.  I 

J  58.  43 

17.40 

0.  77 

2. 19 

1.50 

5.25 

1.  76 

4.  03 

2.61 

0.  30 

4.04 

none 

0. 13 

none 

100.  00 

'7 

Al.  I 

j  56.  25 

17.  65 

0.  76 

2.64 

1.69 

4.  46 

0.  30 

6.  01 

2.  36 

0.  30 

4.  82 

0.  25 

0.  21 

none 

100.  60 

8 

Al.  I 

|  46. 13 

15.  82 

0.  89 

2.  27 

2.13 

10.  68 

0.17 

5.  30 

2.  42 

0. 12 

11.24 

0.  67 

0. 10 

0.  09 

99.  68 

9 

A3.  Ill 

|  68.  99 

20.  29 

2.10 

1.62 

0.  40 

4.  75 

0. 15 

0.  09 

0.14 

1. 10 

trace 

trace 

none 

99.  63 

10 

A2.  II 

J  57.  96 

17.  43 

0.  45 

1.82 

2.34 

5.  07 

5.17 

0.  45 

1.04 

6.  32 

1.21 

0.  02 

none 

99.61 

11 

A4.  IV 

J  65.  20 

16.  25 

5.  45 

n.d. 

1.87 

7.  55 

2.  87 

0.50 

0.  65 

100.  34 

12 

A4.  IV 

J  64.  35 

15.  46 

7.  50 

n.d. 

0.50 

3.  58 

3.28 

3.54 

n.d. 

1.63 

99.  84 

13 

A4.  IV 

J  64.  02 

20.  45 

2.  85 

n.d. 

1.28 

4.51 

3.  34 

3.  54 

n.d. 

99.  59 

14 

D3.  V 

|  65.  73 

16.  20 

2.  66 

1.68 

1.28 

3.12 

4. 12 

1.89 

1.47 

98. 15 

15 

A4.  IV 

j  62.  80 

12.  94 

10.  57 

n.d. 

2.  79 

4.  99 

2.  52 

1.27 

1.13 

1. 10 

100. 11 

16 

C2.  IV 

17 

C4.  V 

j  56.45 

20. 15 

4.  36 

5.00 

2.  66 

6.  59 

2.  95 

1.00 

1.61 

trace 

0.  24 

trace 

101.  01 

j  62.  22 

23 

29 

n.  d. 

3.  22 

6.  21 

2.  69 

1.27 

0. 14 

99.04 

18 

A4.  IV 

j  56.  61 

15.55 

12.  66 

n.  d. 

2.  07 

5.90 

3. 15 

1.  07 

3.  50 

100.51 

19 

C4.  V 

J  56. 17 

16.  50 

10.60 

n.  d. 

2.  21 

6.  97 

2.  94 

0.  75 

3.  01 

99. 15 

INFERIOR  ANALYSES. 


407 


QUARTZ-DIORITE. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Three  Rivers,  Belcher- 
town,  Massachusetts. 

W.  Orr,  jr. 

B.  K.  Emerson, 

M.  U.  S.  G.  S., 

XXIX,  p.  336,  1898. 

Tonalite. 

Three  Rivers,  Belcher- 
,  town,  Massachusetts. 

F.  H.  Fitts. 

B.  K.  Emerson, 

M.  U.  S.  (7.  S., 

XXIX,  p.  336,  1898. 

Tonalite. 

Stop  Island,  Rainy 

Lake  Region, 

Ontario. 

F.  T.  Shutt. 

A.  C.  Lawson, 

A.  G., 

VII,  p.  158,  1891. 

Quartz-diorite. 

Center  of  dike. 
A1203  high. 

FeS., 

BaO 

SrO 

Li.,0 

0.0s 

0.07 

trace 

trace 

Providence  Mine, 
Nevada  County, 
California. 

W.  F.  Hillebrand. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 

II,  p.  149,  1896. 

Altered  granodio- 
rite. 

Cf.No.34,yellow- 
stonose,  and 
No.  11,  harzose. 

FeSo 

BaO 

SrO 

Li20 

0. 24 

0.05 

trace? 

trace 

Providence  Mine, 
Nevada  County, 
California. 

W.  F.  Hillebrand. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 

II,  p.  149,  1896. 

Altered  granodio- 
rite. 

Cf.No.34,yellow- 
stonose,  and 
No.  11,  harzose. 

S03 

FeS., 

BaO" 

none 

1.59 

none 

Empire  Mine,  Nevada 
County,  California. 

G.  Steiger. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 

II,  p.  149,  1896. 

Altered  granodio- 
rite. 

Cf.  No.34,yellow- 
stonose,  and 
No.  11,  harzose. 

so3 

FeS2 

BaO" 

none 

2. 87 

0. 03 

Bellefountain  Tunnel, 
Nevada  County, 
California. 

G.  Steiger. 

W.  Lindgren, 

17  A.  R.  U.  S.  G.  S., 

II,  p.  149,  1896. 

Altered  granodio- 
rite. 

Cf.  No.34,yellow- 
stonose,  and 
No.  11,  harzose. 

S03 

FeSo 

NiO' 

ZnO 

BaO 

SrO 

0.04 

1.61 

trace 

trace 

trace 

trace 

Ophir,  Placer  County, 
California. 

W.  F.  Hillebrand. 

W.  Lindgren, 

14  A.  R.  U.  S.  G.  S., 

II,  p.  275,  1894. 

Altered  granodio- 
rite. 

Cf.  No.  59,  ton- 
alose. 

S 

trace 

Smith’s  Post  Island, 
Essequibo  River, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Ess.  River, 
p.  45,  1900. 

Quartz-diorite. 

Decomposed. 

FeSo 

0. 33 

Omai,  Essequibo  River, 
British  Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  Ess.  River, 
p.  45,  1900. 

Quartz-diorite. 

Decomposed. 

• 

Monte  Santo,  Sao  Paolo, 
Brazil. 

J.  Machado. 

J.  Machado, 

T.  M.  P.  M., 

IX,  p.  355,  1888. 

Quartz-augite- 

diorite. 

Dypvik,  Farsund, 
Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  No.  5,  p.  123. 

Banatite. 

Ivockenhus,  Kullen, 
Sweden. 

A.  Hennig. 

A.  Hennig, 
cf.  N.  j:, 

1900,  I,  p.  224. 

Banatite. 

A1A  high? 

Rino,  Yal  Camonica, 
Piedmont. 

C.  Riva. 

C.  Riva, 

Att.  Soc.  Ital.  Milano, 
XXXVI,  p.  146,  1896. 

Quartz-diorite. 

Mesoncles,  Valsava- 
ranche,  Piedmont. 

G.  Aichino. 

V.  Xovarese, 

B.  Com.  G.  Ital., 

XXV,  p.  286,  1894. 

Quartz-diorite. 

Ivrea,  Piedmont. 

L.  van  Wervecke. 

F.  R.  Van  Horn, 

T.  M.  P.  M., 

XVII,  p.  407,  1898. 

Quartz-hypersthene- 

diorite. 

A1A  high? 

Kamary,  Crimea,  Rus¬ 
sia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII,  Cong.  G.  Int., 
XXXIII,  p.  27,  189L 

Quartz-diorite. 

Aiou  Dag,  Crimea,  Rus¬ 
sia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII,  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Quartz-diorite. 

Tschamny-Burun, 
Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII,  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Quartz-diorite. 

408 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


QUARTZ-DIORITE— Continued. 


No. 

Si02 

A1203 

Fe./>3 

FeO 

MgO 

CaO 

Xa.,0 

k2o 

H20+ 

H20- 

C02 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

20 

1 

55.  69 

14.  20 

11.52 

n.  d. 

1.62 

8.14 

4.01 

1.00 

3. 15 

99.  33 

B4.  V 

21 

1 

•  63.  93 

17.25 

5. 90 

n.  d. 

2.  03 

4.  74 

2.  93 

3.29 

0.  80 

100. 87 

B4.  V 

22 

•  62.  95 

17.61 

4.  59 

n.  d. 

2.15 

5.  06 

3.  30 

3.  34 

0.  68 

99.  68 

A4.  IV 

23 

■  60.  70 

18.  55 

6.  21 

n.  d. 

2.  56 

5.10 

2.  54 

3.  70 

1. 18 

100. 54 

A4.  IV 

DIORITE. 


1 

52.  47 

25.  54 

6.  31 

n.  d. 

2.  31 

6.  62 

3.  23 

0.  54 

1.28 

1. 16 

99.  46 

2.  870 

D4.  V 

1 

2 

58.  01 

15.  72 

0.  64 

3.87 

2.  07 

2. 15 

0.10 

4.  79 

2.  71 

0.  31 

2.  86 

1.08 

0.  31 

0.17 

\ 

100. 24 

Al.  I 

I 

3 

[  46.  65 

16.  29 

n.  d. 

10.  54 

8.13 

13.  22 

2.  78 

trace 

1.56 

0.  57 

1.03 

trace 

trace 

100.  77 

B3.  IV 

J 

4 

58.  67 

14.  89 

7.  56 

n.  d. 

1.79 

5.  68 

7.  69 

2.  69 

0.  57 

1.00 

100.  54 

D4.  V 

J 

r 

5 

60. 13 

17.49 

2.  89 

3.  35 

5.30 

3.  72 

4.  42 

3.02 

1.04 

101.  36 

C3.  V 

J 

6 

i  49.  55 

12.  72 

5.  28 

9.  57 

4.  45 

7.37 

3. 15 

trace 

3.  31 

4.  75 

trace 

100. 15 

B3.  IV 

1 

7 

1  48. 50 

14. 15 

7. 15 

8.  26 

6. .65 

10.  77 

1.97 

0. 12 

3. 10 

trace 

0.  33 

101.10 

C3.  V 

1 

8 

1  48.40 

14.  30 

16.  20 

n.  d. 

6.  94 

11.09 

1.  55 

0.  06 

3.25 

trace 

trace 

103.  40 

D4.  V 

J 

\ 

9 

1  55. 72 

21.35 

n.  d. 

8.81 

0.  63 

5.10 

5.  71 

1.23 

0.  46 

0.  57 

0.  36 

99.94 

A3.  Ill 

1 

10 

1  53.  77 

20.  86 

n.  d. 

5. 93 

2.  76 

5.04 

5.  01 

2.  87 

1.86 

1.21 

99.  31 

B3,  IV 

j 

11 

1  54.  59 

21.26 

2.  76 

3.  41 

1.61 

4.  84 

6.  36 

4.  96 

1.32 

101.11 

C3.  V 

I 

12 

1  65.  73 

17.  85 

0.  93 

3.  88 

1.59 

2.  81 

4.06 

3.  83 

0.  79 

101.47 

C3.  V 

J 

13 

>  57.  35 

14.61 

2. 18 

3.  99 

3.  96 

3.51 

2.  93 

1.92 

4.  08 

4. 16 

0.  81 

0.  25 

99.  97 

2.  666 

A2.  II 

] 

14 

1  55. 40 

16.80 

9.  25 

n.  d. 

5. 19 

7.  60 

3.60 

1.39 

1.25 

100.  48 

A4.  IV 

1 

INFERIOR  ANALYSES. 


409 


QUARTZ-DIORITE — Continued. 


‘  Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks 

Buyuk  Ouraga,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII,  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Quartz-diorite. 

Cap  Marsa,  Mbnerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  2,  p.  106,  1900. 

Microtonalite. 

Cap  Marsa,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  2,  p.  101,  1900. 

Tonalite. 

Cap  Marsa,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  2,  p.  106,  1900. 

Microtonalite. 

DIORITE. 


Whitefish  Bay,  Rainy 
Lake,  Ontario. 

F.  T.  Shutt. 

A.  C.  Lawson, 

A.  G., 

VII,  p.  161,  1891. 

Diorite. 

Center  of  dike. 
A1203  high. 

s 

As 

Fe 

Ni 

Pb 

Cu 

1.25 

1.65 

1.52 

0.12 

0.86 

0. 05 

Croesus  Mine,  Hailey, 
Idaho. 

• 

W.  F.  Hillebrand. 

W.  Lindgren, 

20  A.  R.  U.  S.  G.  S., 

Ill,  p.  219,  1900. 

Altered  diorite. 

Cf.  No.  15 
andose. 

S 

trace 

Summit  of  Mount  St. 
Elias,  Alaska. 

E.  Mattirolo. 

V.  Novarese,  in  Filippi  and 

Sella,  Sped.  Duca  Abruz.  a 
Mount  St.  El.,  1897,  p.  (5). 

Diorite. 

Washoe  County, 

Nevada. 

J.  W.  Phillips. 

W.  C.  Day, 

18  A.  R.  U.  S.  G.  S., 

V,  p.  969,  1897. 

Diorite. 

“Granite.” 
Alkalies  high? 

Rio  Colorado,  Juncal 
Valley,  Argentina. 

R.  Muller. 

A.  Stelzner, 

Btr.  G.  Arg.  Rep., 

I,  p.  212,  1885. 

“Andendiorit.” 

Revin,  Faux  Valle}’, 
Belgium. 

C.  Element. 

C.  Element, 
cf.  N.  J.  1890, 

I,  p.  71. 

Diorite. 

Not  fresh. 

E20? 

FeS 

0.10 

Notre  Dame  de  Meuse, 
Belgium. 

C.  Element. 

C.  Element, 
cf.  N.  J.  1890, 

I,  p.  71. 

Diorite. 

S 

1.61 

Bet.  Mairus  and  Lai- 
dour,  Belgium. 

C.  Element. 

C.  Element, 
cf.  N.  J.  1890, 

I,  p.  71. 

Diorite. 

Sum  high? 

Kortfors,  Orebro, 
Sweden. 

H.  Santesson. 

H.  Backstrbm. 

G.  F.  F., 

XVI,  p.  108,  1894. 

Eugel  in  granite. 

Sliittmossa,  Sweden. 

H.  Backstrbm. 

H.  Backstrbm, 

G.  F.  F., 

IX,  p.  360,  1887. 

Eugel  in  granite. 

Wirvik,  Finland. 

B.  Frosterus. 

B.  Frosterus, 

T.  M.  P.  M., 

XIII,  p.  188,  1892. 

Eugel  in  granite. 

MgO  high? 
cf.  loc.  cit. 

Lippenhof,  Schwarz- 
wald,  Baden. 

Alibegoff. 

G.  H.  Williams, 

N.  J.  B.  B., 

II,  p.  624,  1883. 

Mica-diorite. 

so., 

Org. 

0.20 

0.02 

Litzelkopf,  Birkenfeld, 
Harz  Mountains. 

Biirwald. 

E.  A.  Lossen, 

Jb.  Pr.  G.  L-A., 

X,  p.  266,  1892. 

Diorite-porphyrite. 

Not  fresh. 

Kisowa,  Schemnitz, 
Hungary. 

C.  v.  John? 

C.  v.  John, 

Jb.  Wien.  G.  R-A., 

XXXVIII,  p.  350,  1888. 

Augite-diorite. 

410 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


DIORITE — Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

H20+ 

h2o- 

IM 

o 

o 

Ti02 

p2o5 

MnO 

Sum 

Sp.  gr. 

15 

1  46.  95 

20.  35 

9.  65 

n.  d. 

4.  60 

12.07 

3.  38 

1.02 

1.00 

99.  02 

C4.  V 

1 

• 

16 

1  66.  75 

15.  90 

3.  73 

1.84 

1.23 

3.11 

3.  38 

1.98 

1.22 

99. 14 

C3.  V 

j 

17 

1  57.48 

16.  82 

8.  49 

n.  d. 

4.64 

5.  45 

2.  63 

4.  57 

0.  25 

100.  33 

A4.  IV 

J 

18 

l  56.  77 

20.  02 

6.  40 

n.  d. 

3.  70 

5.  40 

4.  01 

3.  94 

0. 13 

100.  36 

A4.  IV 

J  ' 

19 

1  51.  80 

19.  05 

11.86 

1.52 

3.  53 

8. 10 

3.  23 

0.  99 

0.17 

101. 15 

B3.  IV 

J 

20 

1  49.  50 

19.  61 

2.  38 

6.  66 

5.  28 

10.  75 

4.99 

2.  35 

0.64 

• 

102.  20 

D3.  V 

j 

21 

1  44.  74 

14.  29 

2.  84 

7.  49 

11.48 

13.  70 

1.56 

0.  45 

1.99 

98.  59 

D3.  V 

j 

22 

47.  32 

14.  96 

5.09 

9.  88 

6.44 

9.  50 

3. 15 

n.  d. 

2.80 

99. 14 

C3.  V 

j 

J 

23 

1  47.  25 

12. 19 

1.11 

9.  83 

6.  76 

11.  74 

2.  20 

0.  07 

7.  85 

99.  00 

C3.  V 

1 

24 

1 

' 

}  60.  23 

15.  96 

7.  47 

n.  d. 

2.  64 

8. 19 

3.  73 

0.  98 

0.  89 

100. 09 

A4.  IV 

j 

25 

1  63.  77 

16.  30 

7. 49 

n.  d. 

2.  49 

6.33 

3.  68 

1.21 

none 

101.  27 

C4.  V 

J 

ESSEXITE. 


1 

A4.  IV 

j  49.  67 

17.99 

13.  06 

n.  d. 

3.  06 

6.  63 

6.  21 

2.  62 

0.  86 

%  ’ 

100. 10 

2 

D2.  V 

|  45.  66 

11.64 

3.57 

10.  61 

11.08 

9. 11 

2.60 

0.44 

n.  d. 

2.75  |  0.26 

97.  72 

KERSANTITE. 


1 

1  63.  30 

18.  60 

2.  33 

1.35 

1.  66 

3.  76 

3.45 

1.76 

2.  20 

2.  80 

101.  21 

C3.V 

1 

✓ 

2 

| 

\  52.  30 

17.  45 

1.80 

4.  80 

8.50 

4.  78 

2. 12 

3.23 

3.  70 

2.  40 

101.08 

B3.V 

J 

3 

1  51.  80 

18.90 

1.81 

5.25 

8.  32 

4.  72 

0.  75 

6.  75 

1.60 

1.50 

•101. 40 

B3.  V 

J 

4 

1  67.  50 

14.  50 

7.00 

n.  d. 

2.  30 

1. 10 

3.  38 

3.  38 

‘  1.60 

100.  76 

B4.  V 

J 

INFERIOR  ANALYSES. 


411 


DIOR1TE — Continued 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Jablanic-a,  Herzegovina. 

C.  v.  John? 

C.  v.  John, 

Jb.  Wien.  G.  R-A., 

XXXYIII,  p.  349,  1888. 

Augite-diorite. 

Yal  Moja,  Edolo,  Lom¬ 
bardy. 

C.  Riva. 

C.  Riva, 

Att.  Soc.  I tal.  Mil., 

XXXYI,  p.  141,  1896. 

Diorite. 

Passo  di  Campo,  Lago 
d’Arno,  Lombardy. 

C.  Riva. 

C.  Riva, 

Att.  Soc.  Ital.  Mil., 

XXXYII,  p.  84,  1897. 

Diorite. 

, 

Lago  d’Arno,  Lom¬ 
bardy. 

C.  Riva. 

C.  Riva, 

Att.  Soc.  Ital.  Mil., 

XXXYII,  84,  1897. 

Diorite. 

A1203  high? 

* 

Yal  Moja,  Edolo,  Lom¬ 
bardy. 

C.  Riva. 

C.  Riva, 
cf.  X.  J., 

1897,  II,  p.  (64). 

Diorite-porphyrite. 

Iron  oxides? 

Beresowka,  Ural  Moun¬ 
tains,  Russia. 

Loewinson- 

Lessing. 

Loewinson-Lessing, 

G.  Sk.  Jushno.  Dorpat., 

1900,  p.  244. 

Syenite-diorite. 

Supreya,  Ural  Moun¬ 
tains,  Russia. 

Loewinson- 

Lessing. 

Loewinson-Lessing, 

G.  Sk.  Jushno.  Dorpat., 

1900,  p.  166. 

Microdiorite. 

Assa,  Caucasus. 

L. -Lessing  and 
Krikmeyer- 

Loewinson-Lessing, 
cf.  N.  J., 

1899,  II,  p.  234. 

Metadiorite. 

Caucasus. 

•L. -Lessing  and 
Krikmeyer. 

Loewinson-Lessing, 
cf.  N.  J., 

1899,  II,  p.  234. 

Metadiorite. 

Not  fresh. 

Menerville,  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  2,  p.  32,  1900. 

Microdiorite. 

Arthur’s  Seat,  Shevaroy 
Hills,  Madras,  India. 

T.  L.  Walker. 

T.  H.  Holland, 

Mem.  G.  S.  India, 

XXVIII,  p.  151,  1900. 

H  yperst  hene-dior- 
ite. 

ESSEXITE. 


Monchique,  Portugal. 

Scholar  of  P.  Jan- 
nasch. 

K-Koschlau  and  Hackman, 

T.  M.  P.  M., 

XVI,  p.  239,  1896. 

Essexite. 

S03  trace 

Penikkavaara,  Ivuusa- 
mo,  Finland. 

A.  Zilliacus. 

Y.  Hackman, 

B.  Com.  G.  Finl., 

No.  11,  p.  29,  1900. 

Essexitic  rock. 

Low  sum  due  to 
H20? 

KERSAXTITE. 


Hopital  Camfront, 
Brittany. 

Not  stated. 

C.  Barrois, 

Guide  Exc.  VIII  Cong.  G.  Int., 
VII,  p.  19,  1900. 

Aplitic  kersantite. 

Hopital  Camfront, 
Brittany. 

Not  stated. 

C.  Barrois, 

Guide  Exc.  VIII  Cong. G.  Int., 
VII,  p.  19,  1900. 

Kersantite. 

Hopital  Camfront, 
Brittany. 

Not  stated. 

C.  Barrois, 

Guide  Exc.  VIII  Cong.  G.  Int., 
VII,  p.  19,  1900. 

Kersantite. 

Alkalies? 

Croix  de  Fer,  Grandes 
Rousses,  Dauphiny. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Er., 

VI,  No.  40,  p.  50,  1894. 

Kersantite. 

412 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


KERSANTITE — Continued. 


No. 

Si02 

A1203 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h20+ 

H20- 

co2 

Ti02 

P-A 

MnO 

Sum 

Sp.  gr. 

I 

5 

1  66.  30 

15.  30 

5.  40 

n.  d. 

2.  60 

0.  90 

2.  80 

4.  60 

1.20 

99. 10 

C4.V 

1 

6 

i  66.  04 

13.  30 

8.  40 

n.  d. 

2.  20 

1.  60 

3.40 

4.  70 

1.10 

100.  74 

B4.V 

1 

7 

1  48.45 

15.  57 

5.  07 

4.  86 

4.  28 

10.  48 

3.  57 

2. 15 

2.  23 

1.57 

2. 15 

0.  80 

101. 18 

C2.IV 

1 

8 

52.  68 

14.  05 

4.  87 

7.88 

6.  58 

1.  75 

2.  79 

2.30 

6.  03 

0.  40 

trace 

trace 

99.  33 

2.  77 

B2.III 

J 

9 

1  49.  82 

14.  50 

8.  06 

n.  d. 

5.  81 

7.  69 

3.  03 

3.50 

2.  54 

4.  42 

trace 

99.57 

A4.IV. 

1 

10 

1  45. 14 

9.  68 

13.  55 

n.  d. 

10.  78 

8.  65 

2.02 

3.  27 

4.  24 

2.  82 

trace 

trace 

100. 15 

A4.IV. 

1 

11 

• 

55.95 

19.  47 

4.  09 

1.08 

4.24 

7.84 

2. 

64 

3.  78 

1.  60 

100.  69 

B3.IV. 

J 

PORPHYRITE. 


1 

A4.  IV 

J  51. 93 

18.13 

8.  92 

n.  d. 

5.  30 

9.  82 

4.34 

1.42 

0.  69 

2 

Al.  I 

|  49.  47 

12. 15 

1.93 

4.07 

10.  86 

9.  30 

2.  08 

2.  42 

4. 14 

3.31 

0.21 

0.  37 

0. 10 

100.  44 

3 

C4  V 

j  62.  20 

21.18 

1.42 

n.  d. 

trace 

2.  20 

9.60 

2.  60 

(0.  80) 

100.  00 

4 

D4.  V 

j  57.  50 

27.61 

2.  00 

n.  d. 

2.17 

2.  10 

6. 11 

1.30 

1.91 

100.  70 

5 

C4.  V 

|  52. 59 

18.  57 

8.  62 

n.  d. 

9.18 

1.94 

1.12 

3.  99 

3.11 

99. 11 

6 

B4.  V 

|  47.  60 

19. 10 

11.  55 

n.  d. 

6.  95 

7.82 

3.50 

1.94 

2.  98 

101.44 

7 

D3.  V 

|  49. 17 

14.  59 

3.  91 

12.  94 

4.  32 

8.  78 

3.  68 

0.  79 

0.  58 

98.  76 

8 

1)3.  V 

|  65.  35 

15.  78 

2.  39 

3. 18 

2.  62 

1.59 

3.  45 

4.  94 

2.  29 

101.59 

2.  648 

9 

A2.  II 

|  50.  81 

15.  90 

3.  60 

3.  72 

7. 18 

3.67 

3.  32 

0.  81 

6.  80 

2.  35 

1.06 

0.  27 

99.  75 

2.643 

10 

B4.  V 

|  64.  86 

16.  67 

6.  92 

n.  d. 

2.52 

2. 19 

4.  21 

2.15 

n.  d. 

0. 14 

0.13 

99.  79 

2.  663 

11 

C3.  V 

|  54.44 

19. 97 

7.  52 

0.  52 

# 

5. 15 

3. 11 

2.  26 

3.  58 

4. 18 

100. 73 

2.  62 

12 

A4.  IV. 

|  45.  45 

16.  78 

1 

n.  d. 

15.  66 

3.  07 

10.19 

2.77 

1.42 

2.  85 

2.  03 

100.  22 

INFERIOR  ANALYSES. 


413 


KERSANTITE— Continued. 


1  •  • 

Inclusive.  '  • 

Locality. 

Analyst. 

. 

Reference. 

Author’s  name. 

Remarks. 

La  Balme,  Grandes 
Rousses,  Dauphinv. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

VI,  No.  40,  p.  50,  1894. 

Kersantite. 

Croix  de  Per,  Grandes 
Rousses,  Dauphinv. 

Fabre. 

P.  Termier, 

B.  Serv.  Cte.  G.  Fr., 

VI,  No.  40,  p.  50,  1894. 

Iversantite. 

Stbitrenna,  Gran, 
Norway. 

V.  Schmelck, 

W.  C.  Brogger, 

Eg.  Kg., 

Ill,  p.  81,  1899. 

Kersantite. 

Not  fresh. 

s 

trace 

Biirenstein,  Thuringia. 

R.  Pohlmann. 

R.  Pohlmann, 

N.  J.  B.  B., 

Ill,  p.  100,  1885. 

Kersantite. 

Not  fresh.  Bor¬ 
der  of  dike;  cf. 
No.  4,  kilauose. 

s 

trace 

Falkenstein,  Thuringia. 

R.  Pohlmann. 

R.  Pohlmann, 

N.  J.  B.  B., 

Ill,  p.  97,  1885. 

Kersantite. 

Not  fresh. 

s 

trace 

Gdhren,  Thuringia. 

K.  Pohlmann. 

R.  Pohlmann, 

N.  J.  B.  B. 

Ill,  p.  97,  1885. 

Kersantite. 

Not  fresh. 

Zabehlipe,  Prague, 
Bohemia. 

J.  Nevole. 

. 

B.  Maeha, 

Cf.  Geol.  Centralbl., 

I,  p.  513,  1901. 

Spessartite. 

Not  fresh. 

PORPHYRITE. 


Ivennebunkport,  Maine. 

H.  A.  Flint. 

J.  F.  Kemp, 

A.  G.,  A  , 
p.  138,  1890. 

Augite-porphyrite. 

Cro03  trace 
BaO  0. 03 

East  Gallatin  River, 
Montana. 

L.  G.  Eakins. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 

XVII,  p.  645,  1895. 

Porphvrite. 

Not  fresh. 

Clermain,  Saone-et- 
Loire,  France. 

Not  stated. 

Levy  and  Lacroix, 

B.  Serv.  Cte.  G.  Fr., 

VII,  No.  45,  p.  6,  1895. 

Mica-porphyrite. 

H.20  by  differ¬ 
ence. 

Clermain,  Saone-et- 
Loire,  France. 

Not  stated. 

Levy  and  Lacroix, 

B.  Serv.  Cte.  G.  Fr., 

VII,  No.  45,  p.  7,  1895. 

Mica-porphyrite. 

A1203  high. 

Pelvoux,  France. 

P.  Termier? 

P.  Termier, 

C.  R.,  CXXIV, 
p.  635,  1897. 

Porphyrite. 

Not  fresh. 

Pelvoux,  France. 

P.  Termier? 

P.  Termier, 

C.  R.,  CXXIV, 

1“).,  635,  1897. 

Porphyrite. 

Fresh. 

Foglo,  Finland. 

H.  Berghell. 

B.  Frosterus, 

Finl.  G.  Und.,  Bl.  25, 
p.  23,  1894. 

Labradorite- 

porphvrite. 

St.  Amariner  Thai, 
Vogesen. 

P.  Eitner. 

A.  Osann, 

Abh.  Kte.  E.  L., 

Ill,  p.  132,  1887. 

Labradorite- 

porphvrite. 

S03  0.21 

Org  0. 05 

Oberstein,  Nahe, 

Rh.  Prussia. 

Biirwald. 

K.  Lossen, 

Jb.  Pr.  G.  L-A., 

X,  p.  309,  1892. 

Labradorite- 

porphyrite. 

Not  fresh. 

Hasenberg,  Magdeburg, 
Hesse. 

Bodi  under. 

F.  Klockmann, 

Jb.  Pr.  G.  L-A., 

XI,  p.  210,  1892. 

Augite-porphyrite. 

ALOs  high? 

Potschappel,  Saxony. 

W.  Bruhns. 

W.  Bruhns, 

Z.  D.  G.  G., 

XXXVIII,  p.  748,  1886. 

Hornblende- 

porphvrite. 

Al.fi,  high? 

Iron  oxides? 

. 

Miihlenthal,  Harz 
Mountains. 

Streng. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A., 

VI,  p.  213,  1886. 

Labradorite- 

porphyrite. 

414 


CHEMICAL  ANALYSES  OF  IGNEOUS  KOOKS. 


PORPHYRITE-Continued. 


No. 

Si02 

Al.jOg 

Fe2Os 

FeO 

MgO 

CaO 

Na20 

K,0 

H,0+ 

H20- 

ca. 

" 

TiO, 

PA 

MnO 

Sum 

Sp.  gr. 

13 

B2.  III. 

J  75.  21 

11.  78 

2.  89 

0.  55 

0.31 

1.94 

2.  84 

2.  63 

1.85 

0. 74 

0.  26 

101.  00 

14 

C2.  IV. 

|  72.  36 

12.  88 

4.54 

0.  27 

0.  93 

2.31 

4.  63 

1.99 

1.19 

0. 13 

0.12 

101. 35 

15 

A4.  IV. 

|  63.44 

16.  66 

6.  94 

n.  d. 

3.15 

5. 14 

1.  81 

2.24 

0.  85 

. 

100.  23 

16 

B4.  V. 

|  52. 90 

18.  54 

7.03 

n.  d. 

8.22 

6. 11 

n.  d. 

n.d. 

1.07 

(93.  87) 

17 

1)3.  V. 

|  53.  71 

25.  51 

7. 19 

1.74 

1.24 

4.60 

4.  50 

1.15 

0.  20 

99.  84 

18 

C4.  V. 

J-  47.  77 

20.  95 

12.  27 

n.  d. 

0.  54 

8.18 

4.  31 

1.88 

2.  26 

- 

0.  43 

1.05 

99.64 

19 

A4.  IV. 

Oi 

o 

o 

17.  71 

7.  92 

n.d. 

1.39 

2.96 

6.  66 

4.  08 

1.69 

trace 

trace 

100.  05 

2.  68 

20 

A4.  IV. 

j  48. 18 

16.  55 

11.05 

n.  d. 

7.  35 

11.19 

3.  66 

0. 46 

1.48 

trace 

99.92 

3.04 

21 

A4.  IV. 

|  47.  77 

15.  87 

13.  82 

n.  d. 

5.97 

11.95 

3.  97 

0.  22 

1.02 

trace 

100.  59 

3.  05 

22 

B4.  V. 

j  68.  00 

12.  56 

3.  26 

n.  d. 

4.20 

5.28 

4.57 

0.  95 

2. 11 

100.  93 

23 

B3.  IV 

J  47.  43 

16.  65 

11.29 

1.28 

5.77 

10.  84 

1.58 

2.37 

3.  50 

100.  71 

24 

A4.  IV 

|  56.  71 

17.  92 

8. 13 

n.  d. 

4.  27 

7.  67 

2.  59 

0.  44 

3.22 

100.  35 

25 

D4.  V 

1  54. 10 

15.  91 

7. 18 

n.  d. 

5.  83 

6.  91 

3.  76 

0.64 

3.  98 

98.  31 

26 

B4.  V 

|  49.  57 

19.  59 

13.  83 

n.d. 

7. 25 

3.  82 

1.20 

0.  36 

5. 19 

100.  81 

27 

B3.  IV 

j  48.  97 

21.  32 

0.58 

7.  20 

10.  55 

4.  94 

2.  04 

0.  42 

3.  90 

99.92 
(99.  42) 

28 

B4.  V 

J  46.  27. 

16.  87 

14.  70 

n.  d. 

5.  97 

3. 73 

7.  86 

0.  87 

3.  08 

- 

99.  35 

INFERIOR  ANALYSES. 


415 


PORPHYRITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Near  Cimic,  Moldau- 
thal,  Bohemia. 

Neumann. 

J.  Klvana, 

Cf.  N.  J.,  1898, 

I,  p.  485. 

Porphyrite. 

— 

Klecanky,  Moldauthal, 
Bohemia. 

Neumann. 

J.  Klvana. 

Cf.  N.  J.,  1898, 

I,  p.  485. 

Porphyrite. 

Cernygraben,  Bacher 
Mountains,  Styria. 

A.  Pontoni. 

A.  Pontoni, 

T.  M.  P.  M., 

XIV,  p.  371,  1895. 

Mica-porphyrite. 

Miessling,  Bacher 
Mountains,  Styria. 

A.  Pontoni. 

A.  Pontoni, 

T.  M.  P.  M., 

XIV,  p.  372,  1895. 

Porphyrite. 

Alkalies  not  de¬ 
termined. 

Yal  Moja,  Adamello, 
Tyrol. 

C.  Riva. 

C.  Riva, 

Cf.  N.  J.,  1897, 

II,  p.  64. 

Hornblende- 

porphyrite. 

A1203  high. 

Iron  oxides? 

Yaldieri,  Alpi  Marit- 
timi,  Piedmont. 

Aichino. 

S.  Franchi, 

B.  Com.  G.  I tal., 

XXV,  p.  245,  1894. 

.  Hornblende- 
porphyrite. 

A1203  high. 

MgO  low. 

Yal  Sabbia,  Brescia, 
Italy. 

C.  Riva. 

C.  Riva, 

Gior.  Min., 

IV,  p.  200,  1893. 

Hornblende- 

porphyrite. 

Colle  Sagnette,  Valley 
of  the  Po,  Italy. 

Aichino. 

S.  Franchi, 

B.  Com.  G.  I tal., 

XXXI,  p.  127,  1900. 

Porphyrite. 

Lobbia  di  Viso,  Valley 
of  the  Po,  Italy. 

Aichino. 

S.  Franchi, 

B.  Com.  G.  Ital., 

XXXI,  p.  127,  1900. 

Porphyrite. 

Jalguba,  Olonez, 

Russia. 

Not  stated. 

Loewinson-Lessing, 

Cf.  N.  J.,  1890, 

II,  p.  267. 

Augite-porphyrite. 

* 

Jalguba,  Olonez, 

Russia. 

Not  stated. 

Loewinson-Lessing, 
cf.  N.  J.,  1890, 

II,  p.  267. 

Augite-porphyrite. 

Iron  oxides. 

Alouchta,  Crimea, 

Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide Exc.,VII,  Cong. G.Int., 
XXXIII,  p.  27,  1897. 

Quartz-porphyrite. 

Kourtzy,  Crimea, 

Russia. 

A.  Lagorio. 

. 

A.  Lagorio, 

Guide  Exc.,  VII,  Cong.  G.  Int., 
XXXIII,  p.  27,  1897. 

Porphyrite. 

Caucasus. 

Jastrzembesky. 

Loewinson-Lessing, 
cf.  N.  J.,  1899, 

II,  p.  234. 

Porphyrite. 

Caucasus. 

Jastrzembesky. 

Loewinson-Lessing, 
cf.  N.  J.,  1899, 

II,  p.  234. 

Porphyrite. 

Sum  incorrect. 

Roschka,  Caucasus. 

Makerow. 

Loew  inson-Lessing, 
cf.  N.  J.,  1899, 

II,  p.  234. 

Augite-porphyrite. 

416 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


CAMPTONITE. 


No. 

Si02 

ALA 

FeA 

FeO 

MgO 

CaO 

Na,0 

K.,0 

h2o+ 

h2o- 

co2 

Ti02 

FA 

MnO 

Sum 

Sp.  gr. 

1 

1  38.45 

19.  68 

4.  01 

11.15 

6.  65 

9.  37 

2.  77 

1.72 

1.49 

4.82 

trace 

100. 11 

A4.  IV 

2 

1 

D4.  V 

•  41.00 

21.  36 

13.44 

n.  d. 

3.  85 

10.  40 

2.  86 

131 

5.  00 

99.  22 

3 

1  48. 19 

16.  79 

18.  37 

n.d. 

1.32 

6.  85 

5.  59 

i.  ii 

2.  31 

100.  53 

B4.  Y 

1 

4 

1  44.  85 

17.20 

11.20 

n  d. 

5.02 

7.  52 

1.39 

2.  99 

2.  39 

6.58 

trace 

99.58 

C4.  V 

1 

■ 

_ 

5 

43.  50 

17.02 

13.  68 

n.  d. 

6.84 

8.13 

2.84 

3.  02 

4.  35 

99.  40 

B4.  V 

i 

•6 

42.  05 

12.  30 

3.  81 

9.  52 

4.  83 

11.55 

2. 18 

1.11 

2.  88 

2.  68 

5.  60 

98.  51 

D2.  Y 

J 

7 

1  41.  40 

13.  28 

6.  54 

8.63 

5.  26 

10.  05 

2.  43 

0.  75 

3.17 

4. 18 

2.  75 

98.44 

D2.  Y 

1 

8 

1  54. 67 

12.  68 

11.69 

2. 13 

6.11 

4.  96 

3.  85 

3.65 

2. 10 

> 

101.  84 

D3.  V 

1 

DACITK. 


1 

A4.  IV 

j  68.  20 

16.  98 

3.  75 

n.  d. 

2. 07 

4.  33 

2.  98 

1.52 

0.  44 

100.  27 

id 

A3.  Ill 

|  65. 78 

14.  87 

1.27 

1.00 

1.89 

2.  41 

2,58 

2.  71 

4.32 

2.  87 

0.  08 

trace 

99.  78 

3 

D4.  V 

|  66.  85 

14.  08 

3.  06 

n.  d. 

0.  91 

4.  69 

3.  80 

2.  57 

2.  07 

98.  03 

2.  53 

4 

Da.  V 

|  66.  03 

14.  57 

2.  57 

1.19 

1.89 

3.  38 

3.  71 

2.  70 

2.  07 

0.  09 

98.  20 

5 

B4.  V 

68.  32 

19 

61 

n.  d. 

1.95 

4.24 

4.  06 

1.45 

0.54 

• 

100. 17 

2.  765 

6 

A4.  IV 

|  68.05 

17.95 

2.  97 

n.  d. 

1.40 

3.65 

3.  56 

1.25 

1.78 

trace 

trace 

100.  61 

7 

B4.  V 

|  68.  97 

17.  03 

1.30 

n.d. 

0.  79 

3.  26 

5. 15 

1.70 

1.10 

99.  30 

8 

D3.  V 

|  65.  29 

20. 15 

5.  57 

1.13 

■ 

0.16 

2.11 

2.  52 

1.24 

1. 19 

99.  36 

9 

D3.  V 

j  65.  75 

18.  38 

2.00 

1.30 

1.52 

3.  70 

4.04 

4. 11 

1.20 

0.  20 

102.  20 

10 

A4.  IV 

j  68.47 

14.  67 

3.  93 

n.  d. 

0.  32 

3.  89 

2.34 

3.42 

2.  59 

100.  63 

INFERIOR  ANALYSES. 


417 


CAMPTONITE. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Campton  Falls,  Grafton 
County,  New  Hamp¬ 
shire. 

L.  G.  Eakins. 

J.  P.  Iddings, 

B.  U.  S.  G.  S.  150, 
p.  241,  1898. 

Camptonite. 

Ti02  not  deter¬ 
mined.  Not 
fresh. 

Proctor,  Vermont. 

J.  F.  Kemp. 

Kemp  and  Marsters, 

A.  G.,  IV,  p.  101,  1889. 

Camptonite. 

Not  fresh. 

Ti02  not  de¬ 
termined. 
A1208  high. 

Forest  of  Dean,  Orange 
County,  New  York. 

J.  F.  Kemp. 

J.  F.  Kemp, 

A.  J.  S.,  XXXV, 
p.  332,  1888. 

Camptonite. 

Fort  Montgomery, 
Hudson  River,  New 
York. 

Dennis. 

Kemp  and  Dennis, 

Am.  Naturalist,  Aug.,  1888. 

Camptonite. 

Fairhaven,  Hampton 
County,  New  York. 

J.  F.  Kemp. 

Kemp  and  Marsters, 

A.  G . , 

IV,  p.  101,  1889. 

Camptonite. 

Not  fresh. 

Egge,  Gran,  Norway. 

L.  Sehmelck. 

W.  C.  Brogger, 

Q.  J.  G.  S., 

L.,  p.  20,  1894. 

Camptonite. 

Sum  low. 

Not  fresh. 

Hougen,  Gran,  Nor¬ 
way. 

L.  Sehmelck. 

W.  C.  Brogger, 

Eg.  Kg.,' 

Ill,  p.  60,  1899. 

Camptonite. 

Sum  low. 

Not  fresh. 

Waldmichelbach, 
Spessart,  Bavaria. 

E.  Goller. 

E.  Goller, 

N.  J.  B.  B., 

VI,  p.  566,  1889. 

Camptonite. 

DACITE. 


Lassen  Peak,  Califor¬ 
nia. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S., 

150,  p.  218,  1898. 

Dacite. 

Near  Paskenta,  Tehama 
County,  California. 

G.  Steiger. 

J.  S.  Diller, 

B.  U.  S.  G.  S., 

148,  p.  194,  1897.. 

Dacite  tuff. 

Seal  Harbor,  San 
Clemente  Island, 
California. 

W.  S.  T.  Smith. 

W.  S.  T.  Smith, 

18  A.  R.  U.  S.  G.  S. , 

II,  p.  488,  1898. 

Dacite. 

Hondon,  Chiles  Vol¬ 
cano,  Colombia. 

R.  Kiich. 

R.  Kiich, 

G.  Stud.  Colomb., 

I,  p.  179,  1892. 

Dacite. 

Mojanda,  Quito,  Ecua¬ 
dor. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  458,  1887. 

Dacite. 

Cerro  Quimsa  Chata, 
Bolivia. 

F.  Rudolph. 

F.  Rudolph, 

T.  M.  P.  M., 

IX,  p.  311,  1888. 

Dacite. 

Cerros  Blancos,  San 
Juan,  Argentina. 

R.  E.  Teichgriiber. 

• 

A.  Stelzner, 

B.  tr.  G.  Arg.  Rep., 

1,  p.  184,  1885. 

Dacite. 

Garbanzal,  Cabo  de 
Gata,  Spain. 

Hauff. 

A.  Osann, 

Z.  D.  G.  G. , 

XLIII,  p.  706,  1891. 

Dacite. 

AlaOg  high. 

Mount  Elbruz, 

Caucasas. 

A.  Dannenberg. 

A.  Dannenberg, 

T.  M.  P.  M., 

XIX,  p.  233,  1900. 

Dacite. 

Sum  high. 

Cap  Blanc,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Ph.  Gen., 

XXXIII,  No.  2,  p.  59,  1900. 

1  )acite. 

In  addition 

2.32  s. 

14128— No.  14—03 - 27 


418 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


DACIT  E — Continued. 


No. 

Si02 

A1203 

Fe208 

FeO 

MgO 

CaO 

Na.,0 

k2o  . 

H,0+ 

h2o- 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

11 

1  67.71 

17.25 

4.21 

n.  d. 

1.43 

4.38 

3.13 

2.  90 

1.  35 

102.  36 

D4.  V 

I  ' 

12 

1  67.  47 

19.  07 

1.05 

n.  d. 

0.  24 

4.  87 

3.  87 

3.  89 

0.  84 

101.  30 

C4.  V 

1 

13 

1  63. 00 

17.  40 

5.  03 

n.  d. 

1.02 

5.  71 

3.  89 

4.81 

0.  48 

101.34 

C4.  V 

1 

14 

i  59.  24 

18.  45 

4.  58 

n.  d. 

2.06 

6.  08 

3. 15 

3.  22 

3.  66 

100.  44 

A4.  IV 

1 

15 

] 

\  58.  29 

23.  66 

n.d. 

1.93 

6.  75 

1.59 

2.  32 

5.  63 

100. 17 

B4.  V 

1 

ANDESITE. 


1 

D2.  V 
2 

C3.  V 

3 

B4.  V 

4 

A3.  Ill 

5 

A3.  Ill 

6 

A4.  IV 

7 

D3.  V 

8 

A4.  IV 

9 

B3.  IV 

10 

A4.  IV 

11 

A4.  IV 

12 

B4.  V 

13 

B3.  IV 


1H 

14.  89 

6.54 

none 

0.82  1 

0.59 

4.  47 

4.  78 

3.  20 

0.  78 

trace 

0.  61 

99.  93 

j  52.94 

14.  70 

2.  52 

7.80 

4.49 

6.  56 

3.  09 

0.  04 

2.04 

4.  86 

• 

99.  04 

l  54.  86 

15.04 

4.  92 

3.11 

1.88 

9. 19 

11. 

30 

n.  d. 

0. 46 

100.  76 

j  69.  51 

15.  61 

0.  56 

1.27 

0.  61 

2.  80 

3.  43 

2.  81 

3.  63 

trace 

100.  23 

j  62.94 

18. 14 

n.  d. 

3.  82 

3.  06 

6.  28 

3.  83 

1.22 

0.  60 

0.  41 

0. 10 

100.  40 

j  58. 97 

18.  60 

5.  94 

n.  d. 

6.  89 

2.  84 

3.  05 

2.  24 

1.35 

99.  88 

o 

o 

d 

19.  01 

- 

3.  20 

0.  68 

1.28 

4. 10 

6.  97 

2.  79 

4.30 

trace 

102.  33 

|  55.  80 

18.  22 

8.  98 

n.  d. 

2.  23 

4.  40 

6.  34 

1.90 

2.  30 

100. 17 

j  67.83 

15.  02 

n.  d. 

5. 16 

0.  29 

3.  07 

2.  40 

3.  20 

1. 11 

1.04 

0.26 

99.  38 

j  59.22 

18.  20 

n.  d. 

6.  69 

2.  90 

5.  51 

1.39 

3.  31 

2.  80 

100.  02 

|  58.44 

18. 17 

n.  d. 

6.  03 

2.  40 

6. 19 

3.  20 

1.97 

0.  76 

2.  87 

100.  03 

J  56.  71 

18.  36 

n.  d. 

6.  45 

3.  92 

6.11 

3.  52 

2.  38 

1.94 

99. 39 

j  49.80 

15.  33 

n.  d. 

7.  44 

6.  61 

7.19 

2.  71 

4.  36 

1.38 

2.  56 

2.  67 

0.  73 

0.  30 

101.  08 

INFERIOR  ANALYSES. 


419 


DACITE — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Pra  Zeg  Etter, 
Menerville,  Algeria. 

Puparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Ph.  Gen., 

XXXIII,  No.  2,  p.  129,  1900. 

Dacite. 

Sum  high. 

Cap  Blanc,  Menerville, 
Algeria. 

Puparc  and 
Pearce. 

£ 

Puparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Ph.  Gen., 

XXXIII,  No.  2,  p.  59,  1900. 

Dacite. 

Cap  Blanc,  Menerville, 
Algeria. 

Puparc  and 
Pearce. 

Puparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Ph.  Gen., 

XXXIII,  No.  2,  p.  59,  1900. 

Dacite. 

t 

Pra  Zeg  Etter, 
Menerville,  Algeria. 

Puparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Ph.  Gen., 

XXXIII,  No.  2,  p.  129,  1900. 

Dacite. 

H20  includes 

co2. 

Pra  Zeg  Etter, 

Menerville,  Algeria. 

Puparc  and 

Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Ph.  Gen., 

XXXIII,  No.  2,  p.  129,  1900. 

Dacite. 

H20  includes 

co2. 

•» 

ANDESITE. 

North  Haven, 

Fox  Islands,  Maine, 

Magruder  and 
Jones. 

G.  O.  Smith, 

In.  Piss.,  Johns  Hopkins 
Univ.,  1896,  p.  33. 

Andesite. 

Does  not  corre¬ 
spond  with 
mode. 

Ely, 

Minnesota. 

C.  F.  Sidener. 

N.  H.  Winchell, 

23  A.  R.  G.  Nh.  S.  Minn., 
p.  204,  1895. 

Felsite. 

Not  fresh. 

Mount  Tacoma, 
Washington. 

F.  Collischon. 

K.  Oebbeke,  N.  J.,  1885, 

I,  p.  226. 

Andesite. 

Alkalies  high 
and  not  sepa¬ 
rated. 

Stillwater  Creek, 

Lassen  Peak, 
California. 

W.  H.  Melville. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  150, 
p.  212,  1898. 

Andesite,  tuff. 

Lassen  Peak, 

California. 

P.  W.  Shinier. 

Hague  and  Iddings, 

A.  J.  S., 

XXVI,  p.  225,  1883. 

Andesite. 

Lassen  Peak, 

California. 

T.  M.  Chatard. 

J.  S.  Diller, 

B.  U.  S.  G.  S.,  148, 
p.  193,  1897. 

Secretion  in  dacite. 

A1203  high. 

Ti02  not  deter¬ 
mined. 

Carmelo  Bay, 

California. 

J.  Posada. 

A.  C.  Lawson, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  42,  1893. 

Carmeloite. 

Sum  high. 

ALOo  high  and 
MgO  low. 

Point  Sal,  California. 

H.  W.  Fairbanks. 

H.  IV.  Fairbanks, 

B.  Dep.  G.  Un.  Cal., 

II,  p.  50,  1896. 

Andesite. 

Hoosac  Mountain, 
Eureka,  Nevada. 

R.  IV.  Mahon. 

Hague  and  Iddings, 

M.  U.  S.  G.  S., 

XX,  p.  264,  1892. 

Andesite. 

Cf.  Iddings, 

B.  U.  S.  G.  S., 
150,  p.  221, 
1898. 

Silver  Terrace, 

Washoe,  Nevada. 

W.  G.  Mixter. 

G.  F.  Becker, 

M.  U.  S.  G.  S., 

Ill,  p.  152,  1882. 

Pyroxene-andesite. 

Cf.  Hague  and 
Iddings. 

B.U.  S.  G.  S.,  17, 
p.  33,  1885. 

American  Flat, 

Washoe,  Nevada. 

IV.  G.  Mixter. 

G.  F.  Becker, 

M.  U.  S.  G.  S., 

Ill,  p.  152,  1882. 

Pyroxene-andesite. 

Cf.  Hague  and 
Iddings. 

B.  U.S.  G.  S.  17, 
p.  33,  1885. 

Eldorado,  Washoe, 
Nevada. 

R.  IV.  Wood¬ 
ward. 

G.  F.  Becker, 

M.  U.  S.  G.  S., 

Ill,  p.  152,  1882. 

Pyroxene-andesite. 

Cf.  Hague  and 
Iddings,  B.  U. 
S.  G.  S.,  3.17, 
p.  33,  1885. 

Near  Grant’s,  Mount 
Taylor  Region, 

New  Mexico. 

T.  M.  Chata-d. 

J.  S.  Diller, 

B.  U.  S,  G.  S.,  148, 
p.  185,  1897. 

Mica-andesite. 

Not  fresh. 

420 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


ANDESITE— Continued. 


No. 

Si02 

A1A 

Fe203 

1 

FeO 

MgO 

CaO 

Na20 

k2o 

h2o+ 

h2o- 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

14 

A3.  Ill 

J  45.  31 

9.96 

3.  43 

12.  99 

2.  56 

16.  44 

0. 41 

0.  25 

3.  77 

5.39 

100.  51 

15 

A4.  IV 

j  61.24 

18.32 

6. 17 

n.  d. 

3.  76 

5.06 

3. 15 

2.37 

0.67 

100.  74 

2.612 

16 

A4.  IV 

|  61.06 

15.  42 

8.  01 

n.  d. 

3.  55 

7.11 

2.  66 

1.40 

0.  68 

trace 

trace 

trace 

99.  89 

2.  658 

17 

A4.  IV 

|  59. 84 

18.  57 

4.  76 

n.  d. 

2.95 

4.  69 

2.  85 

2.  72 

4. 10 

100.  48 

2.  177 

18 

A2.  II 

|  53. 68 

16.  96 

5.  00 

2.  41 

1.  79 

10.18 

3.  55 

0.  76 

0.  48 

4.  40 

0.  88 

0.51 

100.  60 

2.  736 

19 

C4.  V 

|  56.  73 

20.  44 

5.  71 

n.  d. 

2.58 

7.23 

3.  73 

2.  45 

0.  54 

99.  41 

20 

B4.  V 

J  59. 13 

17.00 

7.  03 

n.  d. 

n.  d. 

6.  67 

4.80 

1.37 

0. 16 

96. 16 

21 

C4.  V 

1  57.  24 

18.  02 

3.  46 

4.13 

3.  77 

7.  78 

5. 

54 

0.  06 

100.  00 

22 

A4.  IV 

j  60.  34 

15.66 

n.  d. 

8. 13 

2.11 

6.  97 

5. 12 

0.  90 

0.  87 

100. 10 

23 

B4.  V 

j  62.  80 

16.  36 

n.  d. 

7. 11 

3. 05 

3.  63 

4.  50 

0.  80 

1.00 

99.25 

2.  561 

24 

B4.  V 

j  62. 30 

14.  46 

n.  d. 

7.  71 

2.14 

5.  35 

4.  80 

1.72 

0.  98 

-■ 

99.  46 

2.  664 

25 

D4.  V 

|  60. 10 

15.56 

n.  d. 

7.  83 

1.22 

5.  97 

5.11 

1.69 

0.  95 

98.  43 

26 

D3.  V 

|  55.  64 

21.45 

5. 41 

6.  58 

3. 10 

5.  59 

3.  08 

1.60 

n.  d. 

102.  45 

27 

A4.  IV 

|  68. 18 

16.  86 

6. 12 

n.  d. 

0.  71 

5.  35 

2.  40 

0.  21 

0.  73 

trace 

trace 

100.  56 

28 

A4.  IV 

|  68.  05 

17.  95 

2.  97 

n.  d. 

1.40 

3.  65 

3.  56 

1.25 

1.  78 

trace 

trace 

100.  61 

29 

D4.  V 

|  65.  39 

17.  20 

6.39 

n.  d. 

trace 

5.  74 

2.  73 

0.47 

0.59 

trace 

trace 

98.51 

30 

D4.  V 

|  63.  86 

16.  52 

5.91 

n.  d. 

1.60 

3.71 

3. 16 

2.  47 

0.  93 

trace 

98. 16 

31 

C3.  V 

32 

B4.  V 

23.  21 

5.33 

2.44 

0.  76 

11.37 

2.  69 

n.  d. 

n.  d. 

100.  38 

i  56.  50 

28. 

20 

n.  d. 

0.  98 

2.  83 

6.  68 

4.  25 

n.  d. 

99.44 

33 

B‘2.  Ill 

j  56.03 

12.51 

0.45 

15.  73 

6.  08 

4.17 

2.  01 

0.  73 

0.  70 

0.  74 

0. 19 

99.  34 

INFERIOR  ANALYSES. 


421 


ANDESITE— Continued. 


Inclusive. 


S03  trace 


Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

St.  Thomas,  West 

Indies. 

J.  v.  Siemiradzki. 

J.  v.  Siemiradzki, 

N.  J.,  1886, 

II,  p.  178. 

A  north  i  te-and  esite. 

Not  fresh. 

Mount  Iztaccihuatl, 
Mexico. 

H.  Lent? 

H.  Lenk  in  Felix  and  Lenk, 

Btr.  G.  Mex., 

II.,  p.  229,  1899. 

Hornblende- 

andesite. 

Cerro  Guerrero,  north 
of  Mexico  City, 
Mexico. 

Konig. 

H.  Lenk  in  Felix  and  Lenk, 

Btr.  G.  Mex., 

I,  p.  100,  1890. 

Hypersthene- 

andesite. 

Amecameca,  Mexico. 

11.  Lenk? 

H.  Lenk  in  Felix  and  Lenk, 

Btr.  G.  Mex., 

II,  p.  229,  1899. 

Andesite-pumice. 

Ejutla,  Oaxaca, 

Mexico. 

A.  Rohrig. 

H.  Lenk  in  Felix  and  Lenk, 

Btr.  G.  Mex., 

II,  p.  140,  1899. 

Hypersthene- 

andesite. 

Not  fresh. 

Irazu  Volcano,  Carthago, 
Costa  Rica. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  467,  1887. 

Andesite. 

AL,03  high. 

Cerro  Negro, 

Mayasquer, 

Colombia. 

Buntzel. 

R.  Kiich, 

G.  Stud.  Colomb., 

I,  p.  183,  1892. 

Pyroxene-andesite. 

MgO  not 
determined. 

Pasto  Volcano, 

Colombia. 

R.  Kiich. 

R.  Kiich, 

G.  Stud.  Colomb., 

I,  p.  141,  1892, 

Pyroxene-andesite. 

Alkalies  by 
difference. 

Zechzech,  Alausi, 
Ecuador. 

J.  v.  Siemiradzki. 

J.  v.  Siemiradzki, 

N.  J.  B.  B., 

IV,  p.  209,  1886. 

Andesite. 

Zechzech,  Alausi, 
Ecuador. 

J.  v.  Siemiradzki. 

J.  v.  Siemiradzki, 

N.  J.  B.  B., 

IV,  p.  209,  1886. 

Hornblende- 

andesite. 

Zechzech,  Alausi, 
Ecuador. 

J.  v.  Siemiradzki. 

J.  v.  Siemiradzki, 

N.  J.  B.  B., 

IV,  p.  209,  1886. 

Augite-andesite. 

Zechzech,  Alausi, 
Ecuador. 

J.  v.  Siemiradzki. 

J.  v.  Siemiradzki, 

N.  J.  B.  B., 

IV,  p.  209,  1886. 

Hornblende-augite- 

andesite. 

Sum  low. 

Rio  Chanchan, 

Ecuador. 

J.  v.  Siemiradzki. 

J.  v.  Siemiradzki, 

N.  J.,  1885, 

I,  p.  156. 

Hypersthene- 

andesite. 

Sum  high. 

A1.A  high. 

Sajama  Volcano, 

Bolivia. 

F.  Rudolph. 

F.  Rudolph, 

T.  M.  P.  M., 

IX,  p.  306,  1888. 

Hornblende- 

andesite. 

Cerro  Quimsa  Chata, 
Bolivia. 

/ 

F.  Rudolph. 

F.  Rudolph, 

T.  M.  P.  M., 

IX,  p.  311,  1888. 

Hornblende- 

andesite. 

Sajama  Volcano, 

Bolivia. 

F.  Rudolph. 

F.  Rudolph, 

T.  M.  P.  M., 

IX,  p.  306,  1888. 

Hornblende- 

andesite. 

Sum  low. 

Sajama  Volcano, 

Bolivia. 

F.  Rudolph. 

F.  Rudolph, 

T.  M.  P.  M., 

IX,  p.  299,  1888. 

Hornblende- 

phyroxene- 

andesite. 

Sum  low. 

Osorno  Volcano,  Chile. 

W.  Bruhns. 

W.  Bruhns, 
cf.  N.  J.,  1899, 

11,  p.  85. 

Augite-andesite. 

A1A  high. 

Chatham  Bay,  Cocos 
Island,  Galapagos 
Islands. 

G.  P.  Merrill. 

G.  P.  Merrill, 

B.  Mus.  Comp.  Zool., 

XVI,  No.  13,  p.  237,  1893. 

Andesite? 

Burnt  Hill,  King 

Charles  Land, 
Spitsbergen. 

N.  Sahlbom. 

A.  Hamberg, 

G.  F.  F., 

XXI,  p.  523,  1899. 

Hypersthene- 

andesite. 

Scoria. 

422 


CHEMICAL  ANALYSES  OE  IGNEOUS  ROCKS. 


ANDESITE— Continued. 


No. 

Si02 

A1A 

j 

Fe203 

FeO 

MgO 

CaO 

Na.,0 

K20 

H20+ 

H20- 

C02 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

34 

A3.  Ill 

|  55.  78 

12.  77 

12.65 

4.37 

6.30 

2.  88 

2.  38 

0.  75 

0.  83 

0.  80 

trace 

99.  51 

35 

A4.  IV 

J  53. 59 

17. 96 

n.  d. 

7.  74 

2.  55 

6.  53 

4.54 

3. 18 

n.  d. 

3.  26 

0.  68 

100.  03 

36 

A4.  IV 

|  66. 62 

14.  02 

5.  73 

n.  d. 

0.  33 

2.  74 

6.  93 

1.51 

2.  83 

trace 

100.  71 

37 

B4.  V 

|  62.  89 

14.  84 

9.  20 

n.  d. 

0.37 

3.61 

4.  01 

2.  91 

1.41 

99.  24 

38 

D3.  V 

J  57.57 

14.  42 

6.04 

3.  95 

4.  24 

6.  87 

2.  98 

1.08 

1.  55 

0.  27 

98.97 

39 

A4.  IV 

J  52.  68 

12.66 

17.  34 

n.  d. 

0.  93 

11.45 

2.  49 

1.91 

0.  70 

100. 16 

40 

A4.  IV 

j  65.  81< 

14.01 

4. 43 

n.  d. 

0.  89 

2.  01 

4. 15 

6.  08 

2.  70 

100.  08 

41 

D3.  V 

J  61.17 

16.  87 

2. 10 

2.  94 

3.00 

4.  86 

2.  67 

1.81 

3.  09 

98.  51 

2.  543 

42 

A4.  IV 

|  66.  03 

12.  55 

2.  75 

n.  d. 

2.33 

2.  80 

5.02 

4. 13 

4.  20 

99.  81 

43 

A4.  IV 

j  55.  79 

15.97 

12.  50 

n.  d. 

9  99 

XJ.  w  — 

7. 06 

2.  21 

1.86 

2.  43 

100.  49 

2.  705 

44 

B3.  IV 

J  59. 43 

16.  00 

4.49 

3.  67 

4.05 

8.03 

2.  22 

1.28 

n.  d. 

99.17 

45 

D4.  V 

j  58.  07 

13.  22 

10. 10 

n.  d. 

4.  46 

7.04 

2.  58 

1.59 

1.50 

98.  56 

46 

A4.  IV 

|  57. 80 

16.18 

10.  07 

n.  d. 

4.  68 

6.18 

2.  38 

0.  77 

1.70 

99.  76 

2.  81 

47 

A4.  IV 

j  56. 10 

17.  24 

4.  76 

n.  d. 

2.  29 

11.20 

2.  04 

1.38 

1.55 

3.  60 

100. 16 

48 

D3.  V 

j  48.  37 

20.  74 

6.  56 

0.  63 

6.  35 

7.  77 

1.70 

none 

1.60 

6.  00 

0.  94 

100.  66 

49 

B4.  V 

J  61.8 

16.5 

6.  7 

n.  d. 

1.2 

4.5 

7.2 

1.4 

0.6 

99.9 

50 

B4.  V 

|  59. 15 

14.  54 

12.  31 

n.  d. 

1.97 

trace. 

4.01 

6.  56 

1.51 

trace 

100.  05 

2.  68 

•51 

B4.  V 

j  63.  47 

18.  76 

3.  74 

n.  d. 

1.12 

7.10 

3.  93 

1.09 

1.47 

0.  40 

trace 

101.08 

52 

D4.  V 

J  62.  91 

18.  31 

5.  55 

n.  d. 

1.97 

5.  93 

3.  67 

1.66 

2.17 

0.  37 

102.  54 

53 

C4.  V 

|  61.  58 

18.  84 

4.68 

n.  d. 

2.  04 

6.  59 

4.27 

1.49 

1.61 

0.27 

trace 

101.  37 

INFERIOR  ANALYSES. 


423 


ANDESITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Authors  name. 

Remarks. 

Burnt  Hill,  King 

Charles  Land, 
Spitsbergen. 

N.  Sahlbom. 

A.  Hamberg. 

G.  F.  F., 

XXI,  p.  528,  1899. 

Hypersthene- 
an  desite. 

Scoria. 

Floated  block,  Temple 
Bay,  Spitsbergen. 

H.  Backs  trom. 

H.  Backs  trom, 

Bih.  Sv.  Vet.  Ak.  Hd., 

XVI,  Pt.  II,  p.  89,  1890. 

A  ugite-andesite. 

Pumice. 

Beinn  Hiant,  Island  of 
Mull,  Scotland. 

T.  H.  Holland. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLVI,  p.  379,  1890. 

Andesite. 

Beinn  Talaidh,  Island 
of  Mull,  Scotland. 

T.  H.  Holland. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLVI,  p.  349,  1890. 

Andesite. 

Cleveland  Dike,  Mull, 
Scotland. 

Stock. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLVI,  p.  379,  1890. 

Tholeiite. 

Beinn  Hiant,  Island  of 
Mull,  Scotland. 

W.  Tate. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLVI,  p.  379,  1890. 

Tholeiite. 

Scuir  of  Eigg,  Scotland. 

B.  North. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLVI,  p.  379,  1890. 

Andesite. 

Carhope,  Cheviot  Hills, 
Scotland. 

Petersen? 

J.  J.  H.  Teall, 

G.  M., 

XXII,  p.  118,  1885. 

Hypersthene- 

andesite. 

Sum  low. 

Tormore,  Arran,  Scot¬ 
land. 

M.  M.  Tait. 

J.  W.  Judd, 

Q.  J.  G.,  S.. 

XLIX,  p.  558,  1893. 

Pitchstone 
(andesite) . 

S.  0.45 

Cirmhor  Dike,  Arran, 
Scotland. 

Cnder  Thorpe. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLIX,  p.  545,  1893. 

Augite-a.idesite. 

Border  of  dike. 

Bard  on, 

Charnwood  Forest, 
England. 

Lord. 

Hill  and  Bonney, 

Q.  J.  G.  S., 

XLVII,  p.  89,  1891. 

Andesite. 

Armathwaite,  England. 

W.  F.  Iv.  Stock. 

J.  J.  H.  Teall, 

Q.  J.  G.  S., 

XL,  p.  224,  1884. 

Andesite. 

Acklington,  England. 

J.  E.  Stead. 

J.  J.  H.  Teall, 

Q.  J.  G.  S., 

XL,  p.  243,  1884. 

Andesite. 

Preston,  England. 

J.  E.  Stead. 

J.  J.  II.  Teall, 

Q.  J.  G.  S., 

XL,  p.  224,  1884. 

Andesite. 

Not  fresh. 

Killerton,  Devonshire, 
England. 

E.  Haworth. 

B.  Hobson, 

Q.  J.  G.  S., 

XL VIII,  p.  507,  1892. 

Mica-augite- 

andesite. 

Not  fresh. 

AL,03  high. 

No  K20. 

Cam  Bodnan,  Caernar¬ 
vonshire,  Wales. 

E.  H.  Acton. 

A.  Harker, 

Bala  Vole.  Series, 

1889,  p.  69. 

Pyroxene-andesite. 

Carn  Fawr,  Penbroke- 
shire,  Wales. 

F.  E.  Tad  man. 

F.  R.  C.  Reed, 

Q.  J.  G.  S., 

LI,  p.  192,  1895. 

Tachylyte. 

Boulevie,  Esterel, 
France. 

Rust. 

A.  Michel-Levy, 

B.  Serv.  Cte.  G.  Fr., 

No.  57,  p.  19,  1897. 

Esterellite. 

• 

La  Touchque,  Esterel, 
France. 

Rust. 

A.  Michel-Levy, 

B.  Serv.  Cte.  G.  Fr., 

No.  57,  p.  21,  1897. 

Esterellite. 

Dramont,  Esterel 

France. 

Rust. 

A.  Michel-Levy, 

B.  Serv.  Cte."  G.  Fr.. 

No.  57,  p.  19,  1897. 

Esterellite. 

’■I 

50 

63 

01 

26 

13 

27 

54 

30 

92 

20 

99 

48 

77 

06 

11 

31 

20 

38 

60 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


ANDESITE— Continued. 


A1A 

FeA 

FeO 

MgO 

CaO 

Na,0 

Iv20 

h2o+ 

H20- 

C02 

Ti02 

PA 

MnO 

Sum 

18.  49 

6.  38 

n.  d. 

2. 15 

5.  65 

4.19 

1.69 

3.57 

0.  35 

101.97 

18.  43 

4.59 

n.  d. 

2.  38 

7. 18 

3.  92 

1.30 

5.  20 

0.  28 

trace 

100.91 

15.  69 

4.  78 

5.  79 

6.  20 

11.21 

1. 19 

1.55 

0.  65 

b 

102. 07 

15.93 

6.  80 

5.  53 

3.35 

11.32 

1.94 

1. 10 

i 

0.  99 

0.27 

101.49 

15.  61 

2.  33 

8.  23 

5.  80 

11.75 

1.86 

1.  78 

0.  73 

101.  22 

19.  27 

n.  d. 

8.  82 

3.18 

5.  86 

3.  44 

4.69 

2.47 

100.  00 

23 

56 

n.  d. 

1. 15 

4.  75 

3. 16 

2.  43 

1.  75 

99.  35 

17.  45 

5.50 

n.  d. 

1.21 

4.  20 

2.  95 

2.  90 

2.  70 

99.  21 

21.09 

n.  d. 

3.  88 

0.  72 

4.  61 

1.04 

2.  86 

1.50 

trace 

99.  62 

19.  72 

n.  d. 

10. 49- 

2.  46 

9.40 

2.  05 

0.64 

0.  68 

99.  64 

24.  27 

i).  d. 

7.  35 

2.  39 

9.23 

1.59 

0.  75 

0.  55 

100. 10 

16.  82 

8.  49 

n.  d. 

4.  64 

5.  45 

2.  63 

4.  57 

0.  25 

100.  33 

20.  02 

6.  40 

n.  d. 

3.  70 

5.40 

4.  01 

3.  94 

0.  13 

100.  36 

16.  40 

2.  88 

4.18 

2.  63 

4.32 

5.  29 

1.49 

2.  06 

trace 

98.  31 

12. 10 

7.  74 

n.  d. 

1.70 

4.  09 

2.  86 

2.  73 

2. 11 

0.  08 

99.  52 

16.  95 

n.  d. 

8.  07 

1.  65 

4.  30 

1.59 

3.  42 

2.  64 

2. 10 

• 

0. 40 

100. 43 

15.  40 

7.  74 

n.  d. 

2.  09 

5.  95 

3.  25 

2. 45 

0.13 

0.13 

0.  46 

99.  80 

18. 13 

9. 23 

n.  d. 

1 . 93 

8.  50 

2.  44 

1.36 

0.41 

0.  20 

0.34 

99.92 

14.  71 

8. 55 

n.  d. 

4.98 

7.  54 

3.  46 

1.87 

0:73 

0.  05 

0.  82 

100.  31 

INFERIOR  ANALYSES. 


425 


ANDESITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Dramont,  Esterel, 
France. 

Rust. 

A.  Michel-Levy, 

B.  Serv.  Cte.  G.  Fr., 

No.  57,  p.  21,  1897. 

Esterellite. 

Lee  Cours,  Esterel, 
France. 

Rust. 

A.  Michel-Levy, 

B.  Serv.  Cte.  G.  Fr., 

No.  57,  p.  19,  1897. 

Esterel  lif  e. 

Alboran  Island,  Spain. 

H.  Graber. 

F.  Becke, 

T.  M.  P.  M., 

XVIII,  p.  544,  1899. 

Alboranite. 

Sum  high. 

Alboran  Island,  Spain. 

H.  Graber. 

F.  Becke, 

T!  m.  p.  m., 

XVIII,  p.  544,  1899. 

Alboranite. 

Isla  de  la  Nube,  Albo¬ 
ran  Island,  Spain. 

H.  Graber. 

F.  Becke, 

T.  M.  P.  M., 

XVIII,  p.  544,  1899. 

Alboramte. 

Horberig,  Kaiserstuhl, 
Baden. 

A.  Knop.  , 

A.  Knop, 

Der  Kaiserstuhl, 

1892,  p.  259. 

Andesite. 

Calc  to  100  after 
deducting2.27 
H20  and  3.1 
CaC03 

Not  fresh. 

Hlinikerthal,  Hungary. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  467,  1887. 

Andesite. 

Bohunitz,  Hungary. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  467,  1887. 

Andesite. 

Bujaker  Wald,  Cserhat, 
Hungary. 

A.  Kalecsinsky. 

F.  Schafarzik, 

Mt.  Hung.  G.  A., 

IX,  p.  301,  1895. 

Pyroxene-andesite. 

A1203  high. 

• 

Peleske,  Cserhat,  Hun¬ 
gary. 

A.  Kalecsinsky. 

F.  Schafarzik, 

Mt.  Hung.  G.  A., 

IX,  p.  258,  1895. 

Pyroxene-andesite. 

A1203  high. 

Peleske,  Cserhat,  Hun¬ 
gary. 

A.  Kalecsinsky. 

F.  Schafarzik, 

Mt.  Hung.  G.  A., 

IX,  p.  258,  1895. 

Pyroxene-andesite. 

A1203  high. 

Passo  di  Campo,  Ada- 
mello,  Tyrol. 

C.  Riva. 

C.  Riva, 
cf.  N.  J.,  1898. 

II,  p.  247. 

Malchite. 

Lago  d’Arno,  Ada- 
mello,  Tyrol. 

C.  Riva. 

C.  Riva, 
cf.  N.  J.,  1898, 

II,  p.  247. 

Malchite. 

. 

Punta  della  Manza, 
Capraia  Island, 

Italy. 

A.  Rohrig. 

H.  Emmons, 

Q.  J.  G.  S., 

XLIX,  p.  142,  1893. 

Andesite. 

Pizza  del  Corvo, 

Panaria,  Hiolian 
Islands. 

F.  Glaser. 

A.  Bergeat, 

Sb.  Miinch.  Ak., 

XX,  p.  59,  1899. 

Hornblende- 

andesite. 

Monte  Sant’  Angelo, 

Li  pari,  Aeolian 

Islands. 

F.  Glaser. 

A.  Bergeat, 

Sb.  Munch.  Ak., 

XX,  p.  102,  1899. 

Cordierite-andesite. 

Capo  Graziano. 

Filicudi,  AColian 
Islands. 

F.  Glaser. 

A.  Bergeat, 

Sb.  Miinch.  Ak., 

XX,  p.  214,  1899. 

Cordierite-andesite. 

Summit  Filicudi, 

Lipari  Islands. 

F.  Glaser. 

A.  Bergeat, 

Sb.  Miinch.  Ak., 

XX,  p.  208,  1899. 

Pyroxene-andesite. 

Summit  Alicudi, 

Lipari  Islands. 

F.  Glaser. 

A.  Bergeat, 

Sb.  Miinch.  Ak., 

XX,  p.  219,  1899. 

Olivine-pyroxene- 

andesite. 

CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


426 


ANDESITE— Continued. 


No. 

Si02 

Al2Os 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

h20+ 

H20- 

C02 

Ti02 

FA 

MnO 

Sum 

Sp.  gr. 

73 

B3.  IV 

|  69.  52 

13. 12 

5. 27 

n.  d. 

0.  47 

7. 18 

2.06 

1.08 

0. 42 

1.46 

0. 17 

100.  75 

74 

B3.  IV 

|  68.  85 

13.  02 

2.  67 

n.  d. 

1.  57 

4.  72 

1.90 

1.80 

3. 03 

1.36 

0.  21 

100. 17 

75 

A4.  IV 

|  63.44 

12.  88 

7.  64 

n.  d. 

2.  45 

6.04 

4.  02 

3.  09 

0.  31 

0. 16 

0.29 

100. 32 

76 

A3.  Ill 

J  63.  27 

12.  34 

7.  32 

n.  d. 

3.  99 

8.  06 

1.29 

2.  67 

0.  30 

0.  23 

0.34 

100. 36 

77 

1  58.  05 

12.06 

8.42 

n.  d. 

3.  62 

8.  76 

1.46 

2.38 

1.42 

1.12 

0.44 

100. 30 
0.53 

B3.  IV 

7* 

C4.V 

79 

B4.  V 

80 

B4.  V 

J 

99.  79 

J  73.  73 

14. 

77 

n.  d. 

0.  94 

1.93 

3.27 

2.  75 

1.  76 

% 

99. 15 

j  71.  05 

17. 

61 

n.  d. 

trace 

4. 45 

3.  04 

2.  56 

1.42 

100. 13 

j  68.  00 

17. 

91 

n.  d. 

trace 

5.63 

3.  35 

2.  58 

2.  60 

100. 07 

81 

A4.  IV 

j  60.  95 

16.  42 

7.  02 

n.  d. 

2.05 

6.  99 

3.35 

0.  83 

2.  20 

0.  80 

100. 59 

2.  74 

82 

A4.  IV 

83 

C4.V 

J  58. 42 

18.08 

5.30 

n.  d. 

1.  78 

6. 15 

3. 46 

0.91 

5.  31 

100. 44 

2.  62 

j  58.  35 

24. 

92 

n.  d. 

0.  77 

2.  31 

6.  47 

3.  55 

1.66 

99.  00 

84 

A4.IV 

|  57.  01 

19.  02 

n.  d. 

5.  82 

5.47 

6.  92 

4.  49 

1.63 

0.  20 

100.  56 

85 

A4.  IV 

J  56. 99 

19.  58 

n.  d. 

5.44 

5.34 

6.  80 

3.  36 

1.79 

0. 13 

99.  43 

86 

C3.V 

|  54.  86 

23.  08 

4.  41 

'  1.50 

1.29 

6.  98 

3.  35 

1.48 

2.  80 

0.  05 

99.  81 

2. 503 

87 

C4.V 

|  67.  66 

15.30 

2.37 

n.  d. 

1.53 

4.  95 

3.  68 

2.69 

2.  90 

101. 08 

88 

D3.  V 

J  56.  70 

19.  57 

2.  96 

1.70 

3.34 

6. 17 

3.  59 

1.71 

3.  20 

98.  94 

89 

D4.  V 

|  55. 55 

17. 14 

6.  39 

n.  d. 

3.  30 

6.  78 

2.  88 

• 

3.  87 

1.  76 

97.  67 

90 

C4.  V 

|  64.  54 

19. 16 

7.23 

n.  d. 

3.  39 

2. 47 

0.  57 

1. 13 

2.  25 

0.  79 

101.53 

91 

D3.  V 

|  57. 16 

20.  06 

2.84 

1.95 

1.55 

4.  41 

5.84 

4.  52 

1.09 

2.  67 

trace 

102.  09 

92 

A4.  IV 

|  55. 67 

16.  06 

10.  89 

n.  d. 

2.  93 

5.  92 

3.  81 

0.  51 

4.15 

0.  83 

100.  77 

INFERIOR  ANALYSES. 


427 


AND  ES  IT  E — Con  tinued . 


Inclusive. 


S03  1.04 

Cl  trace 


S03  trace 
Cl  trace 


SO3  0.41 
Cl  0. 08 


SO 

Cl 


3 


0.21 
2. 42 


Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Lava  of  1888,  Vulcano, 
yEolian  Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min., 

Ill,  p.  110,  1892. 

Andesite. 

P205  high 

Eruption,  Aug.,  1888, 
Vulcano,  yEolian 
Islands. 

L.  Ricciardi. 

G.  Mercalli, 

■  Gior.  Min., 

Ill,  p.  112,  1892. 

Andesite  ashes. 

P,05  high. 

2.67%  sol.  in 

II.,  O. 

Eruption,  Nov.,  1888, 
Vulcano,  yEolian 
Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min., 

Ill,  p.  112,  1892. 

Andesite  ashes. 

Eruption,  Sept.,  1888, 
Vulcano,  AColian 
Islands.  < 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min., 

Ill,  p.  112,  1892. 

Andesite  ashes. 

1.00%  sol.  in 
H,0. 

Eruption,  Sept.,  1888, 
Vulcano,  yEolian 
Islands. 

L.  Ricciardi. 

G.  Mercalli, 

Gior.  Min., 

III,p.  112, 1892. 

Andesite  ashes. 

PA  high. 

4.15%  sol.  in 
H.,0. 

Kara  Dag,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII.  Cong.  G.  Int., 
XXXI,  p.  13, 1897. 

Pyroxene-andesite. 

Kara  Dag,  Crimea, 
Russia. 

A .  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII.  Cong.  G.  Int., 
XXXI,  p.  13, 1897. 

Pyroxene-andesite. 

Kara  Dag,  Crimea, 
Russia. 

A .  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII.  Cong.  G.  Int., 
XXXI,  p.  13, 1897. 

Pyroxene-andesite. 

Bujuk-Uragi  Mt., 
Crimea,  Russia. 

R.  Prendel. 

R.  Prendel, 
cf.  N.  J.,  1887, 

II,  p.  97. 

Andesite. 

Kara  Dag,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

T.M.P.M., 

VIII,  p.  473, 1887. 

Andesite. 

S.  of  Kara  Dag,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII.  Cong.  G.  Int., 
XXXI,  P- 13, 1897. 

Pyroxene-andesite. 

i 

Mleti,  Caucasus. 

L. -Lessing  and 
Krikmeyer. 

Loewinson-Lessing, 
cf.N.  J.,1899, 

II,  p.  237. 

Andesite. 

Mleti,  Caucasus. 

L. -Lessing  and 
Krikmeyer. 

Loewinson-Lessing, 
cf.  N.  J.,1899, 

II,  p.  237. 

Andesite. 

Stavro  Vouno,  yEgina, 
Greece. 

A.  Rchrig. 

H.  S.  Washington, 

J.  G., 

Ill,  p.  150, 1895. 

Hornblende- 

andesite. 

A1203  high. 

MgO  low. 

Cap  Marsa,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 

Mem.  Soc.  Phys:  Gen., 
XXXIII,  No.  2,  p.  89, 1900. 

Hornblende- 

andesite. 

Cap  Marsa,  Menerville, 

!  Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phvs.  Gen., 
XXXIII,  No.  2,  p.  84,  1900. 

Hvpersthene- 

andesite. 

Mean  of  3. 

Sum  low. 

I  Cap  Marsa,  Menerville, 
Algeria. 

Duparc  and 
Pearce. 

Duparc,  Pearce,  and  Ritter, 
Mem.  Soc.  Phys.  Gen., 
XXXIII,  No.  2,  p.  84,  1900. 

Hypersthene- 

andesite. 

Sum  low. 

Mean  of  3. 

Harrismith,  Orange 
River  Colony,  South 
Africa. 

W.  P.  Jorissen. 

G.  A.  F.  Molengraaf, 

N.  J.,  1894, 

.  I,  P-  82. 

Cordierite- 

vitrophvrite. 

Nightingale  Island, 
Tristan  d’Acunha, 
South  Atlantic. 

C.  Klement. 

A.  Renard, 

Chall.  Rep.  Petr.  Oc.  Islands, 
p.  92,  1889. 

Andesite  tuff. 

Sum  high. 

Chemerin  Kushkek, 
Elburz  Mountains, 
Persia. 

E.  Drasche. 

E.  Drasche, 

Vh.  Wien.  G.  R-A.,  1884, 
p.  196.  . 

Andesite. 

428 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


ANDESITE— Continued. 


No. 

93 

A4  IV 

94 

A4.  IV 

95 

B'2.  Ill 

96 

D4.  V 

97 

C3.  V 

98 

A4.  IV 

99 

A4.  IV 


100 
A4.  IV 
101 
D3.  V 
102 
A3.  Ill 

103 

A2.  II 

104 

A2.  II 

105 
A4.  IV 

106 
A4.  IV 

107 

B3.  IV 

108 
B3.  IV 
109 
B3.  IV 

no 

D4.  V 
111 
D4.  V 


SiO, 

Al,Os 

FeA  ' 

FeO 

MgO 

CaO 

Na20 

K20 

H20-f 

h2o- 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

|  55. 10 

19.  57 

8.52 

n.  d. 

2.01 

5.  90 

3.  67 

4.  77 

1.19 

100. 73 

J-  50.  86 

15.  65 

10.  85 

n.  d. 

6.  03 

11.  76 

2.01 

1.  56 

0.  20 

0.  63 

trace 

trace 

99.  55 

3.  01 

|  59. 70 

16.  68 

5.  43 

2.  09 

2.  35 

5.20 

2.  67 

0.  99 

0.  90 

0.15 

0.  98 

100.  34 

|  54.66 

14.  79 

8.  59 

n.  d. 

0.  80 

6.  08 

3.  62 

2.30 

3.  93 

0. 10 

0.  63 

98.  95 

J  61.28 

18. 16 

5.  97 

1.  76 

0.  79 

3.  55 

5.  51 

2.  75 

1.72 

trace 

101.49 

J  59.  87 

17.23 

9.  96 

n.  d. 

0.  77 

2.  96 

6.  21 

2.  92 

0.  61 

100. 53 

|  54. 44 

12.  90 

7.08 

n.  d. 

12.  75 

5.12 

2.  06 

0.  35 

5.  54 

100. 24 

2.  75 

j  53. 18 

16. 18 

10.  30 

n.  d. 

6.  72 

10.12 

1.  85 

0.35 

1.  65 

100.  35 

2.  725 

1^ 

GO 

o 

ic 

21.98 

5.  85 

5.  09 

1.38 

9.12 

2.  85 

0.  22 

0.  43 

1.45 

99.24 

|  68.06 

15.  03 

0.  28 

3.  66 

0.  81 

2.  71 

4.  25 

3.  41 

2.12 

' 

0.38 

trace 

100. 71 

|  66.  26 

16.  31 

3.38 

1.36 

1.66 

2.  88 

4.11 

2.23 

0.66 

0.  38 

100. 74 

2.  438 

j  60. 13 

17.  41 

4.  30 

1.68 

2.  27 

3.  36 

4.  88 

2.  46 

1.10 

0.  40 

100.  67 

2.  607 

|  57. 76 

18.  39 

7.  51 

n.  d. 

3.  34 

6.  21 

3.  63 

2.  61 

0.  94 

100.  89 

2.  664 

j  53.  63 

19.  59 

5.  70 

n.  d. 

3.  35 

3.  53 

3.  64 

1.62 

7.91 

0.  96 

trace 

99.  93 

j  57.  04 

19.  51 

5.  50 

2.  71 

none 

8. 16 

2.  83 

2.38 

0.  20 

2.  05 

100.  38 

2.  720 
21° 

|  56.  76 

21. 10 

4.52 

3.  02 

trace 

9.01 

2.  80 

3.27 

0.24 

■ 

trace 

100.  72 

2.  666 
15° 

|  56. 57 

17.  82 

2.  91 

2.  65 

trace 

5.11 

3.  09 

2.  61 

5.98 

2. 03 

0.  84 

99.61 

2.  359 
21° 

|  52.  60 

18.30 

12.  70 

n.  d. 

4.  65 

11.05 

0.  67 

0.  09 

0.  06 

100. 12 

|  51.  35 

18.  20 

14.  50 

n.  d. 

3. 10 

10.  26 

0.  84 

0. 16 

0.  25 

0.13 

99.  25 

INFERIOR  ANALYSES. 


429 


ANDESITE— Continued. 


Inclusive. 

1 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Buhemin, 

Elburz  Mountains, 
Persia. 

E.  Drasche. 

E.  Drasche,  . 

Yh.  Wien.  G.  R-A.,  1884, 
p.  196. 

Augite-andesite. 

Perumbakan,  Madras, 
India. 

T.  H.  Holland? 

T.  II.  Holland, 

Q.  J.  G.  S. , 

LIII,  p.  409,  1897. 

Augite-andesite. 

so8 

s 

0.95 

2.25 

Bandaisan,  Japan. 

Shimidzu. 

T.  Wada, 

Mt.  D.  Ges.  Ost-As., 

V,  p.  74,  1889. 

Andesite  ash. 

Alkalies  inter¬ 
changed,  cf. 

N.  J.;  1890, 

II,  p.  102. 

Cl 

s. 

0. 29 

3. 16 

Kirishimayama, 

Kiushiu  Islands, 
Japan. 

M.  Fesca. 

M.  Fesca, 

Mt.  D.  Ges.  Ost-As., 

YI,  p.  347,  1896. 

Andesite  ash. 

Incorrect  in 

N.  J.,  1897, 

I,  p.  288. 

Sulphur  Island,  Japan. 

J.  Petersen. 

J.  Petersen, 

Jb.  Hamb.  Wiss.  Anst., 

VIII,  p.  13,  1891. 

Augite-andesite. 

Sulphur  Island,  Japan. 

J.  Petersen. 

J.  Petersen, 

Jb.  Hamb.  Wiss.  Anst., 

VIII,  p.  15,  1891. 

Augite-andesite. 

Chichishima,  Bonin 
Islands,  Japan. 

Fukuda. 

Y.  Kikuehi, 

J.  Coll.  Sci.  Imp.  U11.  Jap., 
Ill,  p.  73,  1890. 

Andesite. 

“Boninite”  in 
Petersen, 

Jb.  Hamb., 
W.  Anst., 
VIII,  p.  348, 
1891. 

Ototoshima,  Bonin 
Islands,  Japan. 

Fukuda. 

A'.  Kikuehi, 

J.  Coll.  Sci.  Imp.  Un.  Jap., 
Ill,  p.  73,  1890. 

Andesite-perlite. 

“Boninite”  in 
Petersen,  loc. 
cit. ,  p.  348. 

Miyakashima,  Bonin 
Islands,  Japan. 

J.  Petersen. 

J.  Petersen, 

Jb.  Hamb.  W.  Aust., 

VIII,  p.  50,  1891. 

Mivakite. 

A1,0.  high. 

MgO  low. 

MnO  high. 

Eruption,  August,  1883, 
Krakatoa. 

A.  Sell  wager. 

K.  Oebekke, 

N.  J.  1884, 

II,  p.  33. 

Andesite  ash. 

CaS04 
Sol.  salts 

0. 62 

0.89 

Eruption,  August,  1883, 
Krakatoa. 

• 

C.  Winkler. 

• 

R.  D.  M.  Verbeek, 

Krakatau,  Batavia, 

1884,  p.  292. 

Andesite  ash. 

CaS04 
Sol.  salts 

1.57 

1.11 

Eruption,  August,  1883, 
Krakatoa. 

C.  Winkler. 

R.  D.  M.  Verbeek, 

Krakatau,  Batavia, 

1884,  p.  292. 

Andesite  ash. 

Erupted  block, 
December,  1876, 
Merapi,  Java. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  467,  1887. 

Andesite 

Saleijer  Island,  Celebes. 

■ 

A.  Wichmann. 

A.  Wichmann, 

Nk.  Tds.  Ned.  Ind., 

LIV,  p.  261,  1895. 

Andesite  tuff. 

Tanna  Island,  New 
Hebrides,  Pacific 
Ocean. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 

XX,  p.  236,  1887. 

Lava. 

NoMgO? 

MnO  high. 

* 

Tanna  Island,  New 
Hebrides.  Pacific 
Ocean. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 

XX,  p.  237,  1887. 

Lava. 

A1203  high? 

MgO  low? 

New  Britain,  Pacific 
Ocean. 

A.  Liversidge. 

A.  Liversidge, 

J.  R.  Soc.  N.  S.  W., 

XVI,  p.  50,  1883. 

• 

Pumice. 

MgO? 

MnO  high? 

Rotochu,  Tarawera, 

New  Zealand. 

• 

J.  A.  Pond. 

S.  P.  Smith, 

Eruption  of  Tarawera, 
Wellington,  1887,  p.  76. 

Lapilli. 

CaO? 

Alkalies? 

S03 

Cl 

0.41 

0.05 

Pareheru,  Tarawera, 
New  Zealand. 

J.  A.  Pond. 

S.  P.  Smith, 

Eruption  of  Tarawera, 
Wellington,  1887,  p.  76. 

Lapilli. 

CaO? 

Alkalies? 

430 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


ANDESITE— Continued. 


No. 

SiO, 

Al,Og 

Fe-A 

FeO 

MgO 

CaO 

Na20 

K.,0 

H20+ 

H.,0 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

112 

■  50.  90 

20.  00 

14. 10 

n.  (1, 

2.  77 

10.  38 

0.  70 

0. 14 

0. 16 

99.41 

DL  V 

J 

113 

■  55. 12 

20.41 

7.  74 

n.  d. 

2.  75 

5.  35 

3.  80 

2.  50 

3. 13 

100.  80 

D4.  V 

•  GABBRO. 


1 

57.  00 

16.  01 

ii.  d. 

10.  30 

1.62 

6.20 

4.35 

3.  53 

0.15 

99.  16 

B4.  V 

1 

• 

2 

1  49.  93 

24.  64 

n.  d. 

2.  74 

2.  43 

6.  27 

2.20 

3.  80 

1.20 

6.01 

99.  22 

D4.  V 

1 

3 

49.  30 

22.  46 

12.  04 

n.  d. 

2. 14 

9.30 

3.  01 

1.27 

0.  78 

100.  30 

D4.  V 

J 

4 

43.  35 

29.  75 

5.  61 

n.  d. 

2.  03 

12.  46 

trace 

5.  93 

0.  73 

99.  86 

D4.  V 

1 

r 

5 

1  45.  35 

16.11 

3.  42 

3.50 

12.  32 

18.  04 

(1.26) 

100.  00 

2.  992 

B4.  V 

1 

6 

1  44. 11 

24. 45 

7.89 

6.  52 

3.  84 

11.96 

1.67 

0.  22 

0.  60 

0.  51 

trace 

101.27 

3.044 

C3.  V 

1 

7 

l  38.  05 

24.  73 

5.  65 

6.  08 

11.58 

1.25 

2.54 

1.94 

7.53 

0.  93 

100. 28 

A3.  HI 

1 

8 

1  49. 19 

18.  71 

5.03 

4.  04 

5.  92 

7.  98 

1.44 

0.  77 

5.  05 

1.82 

99.  95 

A3.  Ill 

1 

9 

53.43 

13.  81 

5.08 

9.  86 

4.  64 

8.  25 

2.51 

1. 12 

0. 27 

trace 

98.97 

D3.  V 

J 

10 

1  50.  43 

23.  83 

17.63 

n.  d. 

2.  46 

4.  79 

1.  66 

0.  22 

n.  d. 

trace 

98.  63 

D4.  V 

J 

11 

47.  43 

23.  66 

13.  06 

n.  d. 

3. 15 

11.21 

0. 15 

0.20 

0.  90 

99.  76 

D4.  V 

I 

12 

47.40 

29.  74 

n.  d. 

1.94 

0.  57 

13.  30 

4.  99 

1.  56 

1.64 

101. 14 

2.  704 

C4.  V 

1 

13 

• 

i  45.  69 

13.  30 

1.  85 

4.  72 

13.  06 

13.50 

1.36 

trace 

2.47 

2.29 

1.  89 

0.  06 

0.  24 

100.  86 

A2.  II 

J 

14 

1  45. 43 

12.55 

n.  d. 

6.  50 

13.41 

12.  39 

1.71 

0.11 

2.  74 

2.41 

2.35 

0.04 

0.  21 

100.  09 

A3.  Ill 

J 

• 

15 

l  53.  46 

13.  35 

n.  d. 

16.  74 

3.07 

10.  94 

n.  d. 

n.  d. 

1.64 

0.  80 

100.  00 

C4.  V 

1 

• 

16 

1  39.  87 

24.  30 

1.59 

4.  09 

11.30 

7.  61 

1.93 

1.11 

8.  12 

99.  92 

2.  73 

D4.  V 

J 

INFERIOR  ANALYSES. 


431 


ANDESITE — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

S03  0.22 

Cl  0. 04 

Wairoa,  Tarawera, 

New  Zealand. 

J.  A.  Pond. 

S.  P.  Smith, 

Eruption  of  Tarawera, 
Wellington,  1887,  p.  76. 

Andesitic  lapilli. 

A120,  high. 
CaO? 

Alkalies? 

Port  Hills,  Christ¬ 
church,  New  Zealand. 

R.  Speight. 

R.  Speight, 

Tr.  N.  Z.  Inst., 

XXV,  p.  369,  1893. 

Olivine-andesite. 

“Most  trust  wor¬ 
thy  of  4  bad 
analyses.” 

GABBRO. 


Natural  Bridge, 
Adirondack  Moun¬ 
tains,  New  York. 

C.  H.  Smyth,  jr. 

C.  H.  Smyth,  jr., 

B.  G.  S.  A., 

VI,  p.  274,  1895. 

Gabbro. 

Rose  town,  west  of 

Stonv  Point, 

New  York. 

L.  M.  Dennis. 

J.  F.  Kemp, 

A.  J.  S., 

XXXVI,  p.  251,  1888. 

Hornblende- 

gabbro. 

A1203  and 

Ti02  high. 

MgO  low. 

Rosetown,  west  of 

Stony  Point, 

New  York. 

J.  F.  Kemp? 

J.  F.  Kemp, 

A.  J.  S., 

XXXVI,  p.  249,  1888. 

Hornblende- 

gabbro. 

A1203  high. 

MgO  low. 

Rosetown,  west  of 

Stony  Point, 

New  York. 

L.  M.  Dennis. 

J.  F.  Kemp, 

A  J  S 

XXXVI,  p.  250,  1888. 

Hornblende- 

gabbro. 

A1203  high. 

MgO  low. 
Alkalies? 

G winn’s  Falls,  Balti¬ 
more,  Maryland. 

W.  S.  Bayley. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  28, 
p.  37,  1886. 

Hypersthene- 

gabbro. 

Mount  Hope,  Balti¬ 
more,  Maryland. 

L.  McCay. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  28, 
p.  37,  1886. 

Hypersthene- 

gabbro. 

Different  in  15 
A.  R.  U.  S.  G. 
S.,p.  673, 1895. 

Sturgeon  Falls, 
Menominee  River, 
Michigan. 

R.  B.  Riggs. 

G.  H.  Williams, 

B.  U.  S.  G.  S.,  62, 
p.  76,  1890. 

Gabbro. 

Altered. 

Lower  Quinnesec  Falls, 
Menominee  River, 
Michigan. 

R.  B.  Riggs. 

G.  PI.  Williams, 

B.  U.  S.  G.  S.,  62, 
p.  89,  1890. 

Gabbro-diorite. 

Schistose. 

Not  fresh. 

Wind  Lake,  Minnesota. 

Dodge  and  Side- 
ner. 

M.  E.  Wadsworth, 

Bull.  2,  G.  Nh.  S.  Minn., 
p.  97,  1887. 

Gabbro. 

Duluth,  Minnesota. 

J.  A.  Dodge. 

M.  E.  Wadsworth, 

Bull.  2,  G.  Nh.  S.  Minn., 
p.  75,  1887. 

Gabbro. 

Granite  Falls, 

Minnesota. 

E.  J.  Babcock. 

C.  W.  Hall, 

B.  U.  S.  G.  S.,  157, 
p.  89,  1899. 

Hypersthene- 

gabbro. 

Encampment  Island, 
Minnesota. 

C.  Palache. 

A.  C.  Lawson, 

Bull.  8,  G.  Nh.  S.  Minn., 
p.  6,  1893. 

Anorthosite. 

so3 

0. 43 

Bagley  Canyon,  Mount 
Diablo,  California. 

W.  H.  Melville. 

W.  H.  Melville, 

B.  G.  S.  A., 

11,  p.  404,  1891. 

Gabbro. 

“Shaly.” 

Not  fresh. 

SOg 

c 

0.24 

trace 

Bagiev  Canyon,  Mount 
Diablo,  California. 

W.  H.  Melville. 

W.  H.  Melville, 

B.  G.  S.  A., 

II,  p.  404,  1891. 

Gabbro. 

“Shaly.” 

Not  fresh. 

St.  Thomas,  West 

Indies. 

J.  Siemiradzki. 

J.  Siemiradzki, 

N.  J.,  1886, 

II,  p.  176. 

Corsite. 

Belhelvic, 

Aberdeenshire, 

Scotland. 

A.  E.  Brown. 

T.  G.  Bonney, 

Geol.  Mag., 

XXII,  p.  442,  1885. 

Troctolite. 

Not  fresh.  All 
determinations 
uncertain;  cf. 
Ref.  note. 

432 


CHEMICAL  ANALYSES  OF  IGNEOCS  ROCKS. 


GABBRO — Continued. 


No. 

Si02 

AlA 

Fe2Os 

FeO 

MgO 

CaO 

Na2( ) 

K20 

H20+ 

H20- 

co2 

Ti()2 

I’A 

MnO 

Sum 

Sp.  gr. 

17 

B4.  V 

I4'2'81 

14. 55 

n.  d. 

20.  52 

1.62 

3. 96 

5.  57 

2.  01 

6.  38 

0. 40 

1.90 

0.  51 

100.  23 

18 

D4.  V 

|  43.  66 

26.  79 

5.  81 

n.  d. 

5.  80 

15.  64 

1.97 

0. 55 

1.76 

0.  44 

102.  42 

19 

D4.  V 

|  48.  38 

23.  66 

8.  03 

n.  d. 

6.58 

11.02 

2.  60 

1.09 

n.  d. 

101.  36 

20 

D2.  V 

|  49.  90 

23.  33 

4. 10 

4.  38 

1.65 

10.97 

3.  06 

0.  62 

0.  60 

• 

0.13 

0.  42 

0.  49 

99.  97 

• 

21 

C2.  IV 

|  49.  48 

20.  60 

4.  23 

3.  75 

4. 16 

13.  07 

2.  65 

0.  21 

0.  25 

0.11 

0.32 

0.  87 

99.  98 

22 

D3.  V 

|  47.  75 

22.  49 

4.  53 

3.  23 

0.59 

15.  99 

0.  91 

1.  75 

0.  76 

0.  48 

1.53 

100.  01 

23 

D4.  V 

1  47.  37 

14.  65 

13.  74 

n.  d. 

0.  51 

13.  27 

3.58 

1.29 

1.09 

- 

4.  69 

100. 19 

2.  635 

24 

C4.  V 

|  46.  57 

19.  56 

n.  cl. 

5.82 

9.  27 

13.  29 

3.24 

0.  51 

2.  88 

101. 14 

25 

D3.  V 

J  50.95 

7.21 

1.29 

7.  39 

20.  31 

6. 13 

5.53 

1.03 

0.  77 

100.  61 
(100.  66) 

3. 102 

26 

C4.  V 

|  59.52 

20.18 

n.  d. 

6.  68 

1.34 

6.  81 

2.  82 

1.26 

1.77 

100.  38 

27 

C4.  V 

|  55. 19 

20.24 

n.  d. 

8.18 

4.  97 

8.  68 

1.83 

0.  27 

0.  79 

100. 15 

28 

D4.  V 

|  40.  49 

16.  20 

22. 10 

n.  d. 

7.04 

14.  25 

1.45 

0.19 

0. 05 

101.  77 

29 

1 

B4.  V 

l  48.  40 

17.  53 

n.  d. 

4.  28 

16.51 

11.11 

1. 

80 

0.  76 

100.  91 

: 

30 

B3.  IV 

|  47.  00 

23.  67 

2.  31 

3.  20 

8.  72 

11.40 

2.  40 

0.  70 

0.  62 

trace 

100.  02 

31 

B3.  V 

|  41.55 

21.40 

11.  38 

1.35 

12.  20 

7.80 

0.  80 

0.24 

3.  65 

trace 

100.  87 

32 

D3.  V 

J  38.47 

18.  89 

1.92 

0.  78 

4.33 

30.  34 

1.15 

1.54 

2.89 

100.  31 

3.  05 

33 

D2.  V 

J  50. 14 

15.65 

1.06 

10.11 

5.05 

8.  62 

2.  85 

1.19 

0. 17 

0.17 

2. 47 

0.  38 

0.  20 

98.  86 

34 

C3.  V 

|  42.  56 

21.99 

4.69 

5.40 

. 

6.  69 

17.06 

1.67 

0.  35 

0.17 

100.  58 

35 

C3.  V 

J  38.  59 

24.  37 

7.  66 

5.  23 

5.  95 

15.30 

1.34 

0. 46 

0!  84 

99.  64 

36 

D3.  V 

j  37.  82 

19.94 

3.  48 

12.  70 

10.  97 

1 

14.  71 

1 

1.68 

n.  d. 

0.57 

101.  82 

INFERIOR  ANALYSES. 


433 


GA  BBRO — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cataclews  Point, 
Cornwall. 

J.  J.  Beringer. 

H.  Fox, 

Tr.  R.  G.  Soc.  Cornw., 

XII,  p.  71,  1896. 

Biotite-plagioclase 

rock. 

Not  fresh. 

Dramont,  Esterel, 
France. 

Ritst. 

A.  Michel  Levy, 

B.  Serv.  Cte.  G.  Fr., 

No.  57,  p.  36,  1897. 

Inclusion  in  ester- 
ellite. 

Kullen,  Sweden. 

A.  Hen  nig. 

A.  Hennig, 
cf.  N.  J.,  1900, 

I,  p.  224. 

Gabbro. 

FeSo  0. 32 

Fuchstein,  Oberkaims- 
bach,  Hesse  Darm¬ 
stadt. 

\V.  Sonne. 

C.  Chelius, 

Nb.  Ver.  Erdk, 

XVIII,  p.  24,  1897. 

Olivine-gabbro. 

FeS,  0. 28 

Yierstock,  Kaimsbach, 
Hesse  Darmstadt. 

Not  stated. 

C.  Chelius, 

Erl.  G.  Kte.  Hesse., 

V,  p.  20,  1897. 

Olivine-gabbro. 

Frankenstein,  Hesse 
Darmstadt. 

F.  W.  Schmidt. 

Chelius  and  Klemm, 

Erl.  G.  Kte.  Hesse., 

IV,  p.  39,  1896. 

Olivine-gabbro. 

Eichberg,  Hesse  Darm¬ 
stadt. 

F.  W.  Schmidt. 

C.  Chelius, 

Erl.  G.  Kte.  Hesse., 

I,  p.  18,  1886. 

Gabbro. 

MnO  high. 

Rosswein,  Saxony. 

Sachsse  and 
Becker. 

Sachsse  and  Becker, 
cf.  N.  J.,  1893, 

II,  p.  503. 

Gabbro. 

Student  Eule, 

Bohemia. 

V.  Stanek. 

E.  Radi, 
cf.  N.  J.,  1899, 

II,  p.  58. 

Gabbro. 

A1.,03  low. 

MgO  high. 

Na20  high? 

Mount  Pilis,  Zemplen 
Comitat,  Hungary. 

Petrik. 

J.  v.  Szadeczky, 

Y  K 

*  XXI,’  p.  268,  1891. 

Labradorite. 

Mount  Pilis,  Zemplen 
Comitat,  Hungary. 

Petri  k. 

J.  v.  Szadeczky. 

F.  K., 

XXI,  p.  272,  1891. 

Augitic  labradorite. 

Jablanica, 

Herzegowina. 

C.  v.  John? 

C.  v.  John, 

Jb.  Wien,  G.  R-A., 

XXXVIII,  p.  352,  1888. 

Gabbro. 

FeS2  0. 52 

Mount  Collon,  Arolla, 
Switzerland. 

A.  Brunet. 

A.  Brun, 
cf.  N.  J.,  1897, 

I,  p.  475. 

Gabbro. 

Mt.  Collon,  Arolla, 
Switzerland. 

A.  Brunet. 

A.  Brun, 
cf.  N.  .T.,  1897, 

I,  p.  475. 

Gabbro. 

F  trace 

FeS2  0. 50 

Mt.  Collon,  Arolla, 
Switzerland. 

A.  Brunet. 

A.  Brun., 
cf.  N.  J.,  1897, 

I,  p.  475. 

Gabbro. 

Cl  0. 08 

S  0.31 

X  0.41 

Stazzona,  Orezza, 
Corsica. 

M.  Oels. 

M.  Oels, 
cf.  N.  J.,  1896, 

I,  p.  46. 

Gabbro. 

Goroschki,  Wolhynia, 
Russia. 

W.  Tarassenko. 

W.  Tarassenko, 
cf.  N.  J.,  1899, 

I,  p.  463. 

Olivine-gabbro- 

norite. 

Supreya,  N.  Ural 
Mountains,  Russia. 

Loewinson- 

Lessing. 

Loewinson-Lessing, 

G.  Sk.  Jushno.  Dorpat,  1900, 

p.  166. 

Magnetite-gabbro. 

Light  bands 
A12Os  high. 

Deneshkin  Kamen, 

N.  Ural  Mountains, 
Russia. 

Loewinson- 

Lessing. 

Loewinson-Lessing, 

G.  Sk.  Jushno.  Dorpat,  1900, 

p.  166. 

Magnetite-micro- 

gabbro-diorite. 

Al,Os  high. 

Supreya,  N.  Ural 
Mountains,  Russia. 

Loewinson- 

Lessing. 

Loewinson-Lessing, 

G.  Sk.  Jushno.  Dorpat,  1900, 

p.  166. 

Magnetite-gabbro. 

Dark  bands. 

14128— No.  14—03 - 28 


434 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


GABBRO — Continued. 


No. 

Si02 

A1A 

Fe-A 

FeO 

MgO 

CaO 

Na.,0 

K.,0 

h2o+ 

h2o- 

co2 

Ti02  P2()5 

MnO 

Sum 

Sp.  gr. 

37 

A3. 

Ill 

j  45.  97 

18. 18 

5.  95 

2.  30 

7.50 

8.  29 

4. 10 

0.  75 

6.  50 

trace 

99.  54 

2.  870 
15° 

38 

A3. 

III 

|  39.  30 

18.58 

8.88  1 

* 

1.61 

4.  09 

16.  82 

6.  01 

0.  42 

4.  72 

- 

0.13 

trace 

trace 

100.56 

3. 122 
15° 

39 

A3. 

III 

j  39. 12 

2.  44 

5.  68 

1.70 

37.  08 

0.30 

1.29 

0.  42 

11.70 

99.  73 

2.649 

15° 

NORITE. 


1 

1)3.  V 
2 

D3.  V 

3 

D3.  V 

4 

D4.  V 

5 

A4.  IV 

6 

B3.  IV 

7 

C4.  V 

8 

D2.  V 

9 

B4.  V 

10 

B4.  V 
11 

D4.  V 
12 

D3.  V 


|  40.  61 

25.  90 

2.18 

5.  37 

7.69 

14.  50 

2.31 

0.  25 

0.  78 

. 

0.  65 

100.  24 

2.  91 

J  64.  04 

2.11 

2.  81 

22. 14 

4.  04 

0.  60 

0.30 

0. 11 

0.  67 

3.73 

100.  55 

|  58.  94 

2.  72 

3.  01 

22.  94 

4.  74 

0.  71 

0.24 

0.09 

3.  35 

3.  72 

100. 46 

|  65. 17 

21.04 

0.  74 

n.  d. 

0.  04 

1.20 

9.  20 

1.  70 

0.  80 

trace 

99.  89 

• 

1  51.  80 

26.  42 

11.08 

n.  d. 

5.  08 

1.45 

3.13 

0.  24 

0.84 

100.  04 

j  51.  30 

25.  20 

2.  91 

2.39 

4.01 

2.50 

3.82 

»0.  79 

0.  55 

99.47 

2.  88 

J  49. 38 

28.  03 

12.  32 

n.  d. 

3.  50 

2.  73 

3.  49 

0.  93 

0.64 

101.02 

2.  92 

j  52.  28 

23.  30 

4.  as 

3.  25 

3.  02 

5.  01 

3.  95 

1.51 

n.  d. 

1.80 

0.  80 

100.  22 

|  52.  21 

19.  24 

10.  46 

n.  d. 

2.  36 

7.  28 

3.  48 

1.09 

n.  d. 

3.12 

1.21 

100. 45 

|  49.  89 

24.  39 

6.  09 

n.  d. 

3.91 

9.  61 

5.30 

0.  29 

1.22 

100.  70 

|  50. 45 

6.  50 

2.  49 

8.38 

19.  02 

7.82 

n.  d. 

n.  d. 

0.  97 

0.  63 

trace 

trace 

96.  26 

I36-81 

14.32 

7.  38 

15.  25 

10.  49 

17.  23 

2.  06 

0.37 

5.  25 

2.30 

0.18 

100.  62 

3.  08 

INFERIOR  ANALYSES. 


435 


( i  ABBRO — Continued . 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name.  Remarks. 

Laurium,  Attika, 

R.  Lepsius. 

R.  Lepsius, 

Hornblende-gabbro.  Not  fresh. 

Greece. 

Geol.  v.  Attika,  Berlin,  1893, 

p.  102. 

Plaka,  n.  Laurium, 

R.  Lepsius. 

R.  Lepsius, 

Gabbro.  Not  fresh. 

Greece. 

Geol.  v.  Attika,  Berlin,  1893, 

« 

p.  97. 

Kaisariani,  Mount 

R.  Lepsius. 

R.  Lepsius, 

Olivine-gabbro.  •  Not  fresh.  Ser- 

Hymettos,  Greece.  • 

Geol.  v.  Attika,  Berlin,  1893, 

pentinized. 

p.  99. 

NORITE. 


ZrO., 


BaO 

SrO 


0.07 


none 

none 


Monhegan  Island, 

Maine. 

E.  C.  E.  Lord. 

E.  C.  E.  Lord, 

A.  G. , 

XXVI,  p.  340,  1900. 

Olivine-norite. 

A1203  high. 

Muscovado  Lake,  Cook 
County,  Minnesota. 

A.  D.  Meeds. 

N.  11.  Winchell, 

23  A.  R.  G.,  Nh.  S.  Minn., 
p.  212,  1895. 

Norite. 

Igneous? 

Not  fresh? 

Same  as  next. 

Muscovado  Lake,  Cook 
County,  Minnesota. 

A.  I).  Meeds. 

N.  II.  Winchell, 

23  A.  R.  G.,  Nh.  S.  Minn., 
p.  212,  1895. 

Norite. 

Igneous? 

Not  fresh. 

Same  as  above. 

San  Diego,  California. 

Not  stated. 

L.  V.  Chrustchoff, 
cf.  N.  J.,  1886, 

II,  p.  57. 

H  yperite. 

A1203  high. 

FeO  and  MgO 
low. 

Le  Pallet,  Loire  Infer., 
France. 

# 

Not  stated. 

A.  Lacroix, 

B.  Serv.  Cte.  G.  Fr., 

LXVII,  p.  23,  1899. 

(Cordierite?)  Norite. 

Contact  meta¬ 
morphism. 

Prinaux,  France. 

A.  Lacroix. 

A.  Lacroix, 

B.  Serv.  Cte.  G.  Fr., 

LXVII,  p.  23,  1899. 

Cordierite-norite. 

Contact  meta- 
morphism. 

Le  Pallet,  Loire  Infer., 
France. 

Not  stated. 

A.  Lacroix, 

B.  Serv.  Cte.  G.  Fr., 

LXVII,  p.  23,  1899. 

Garnet-norite. 

Contact  meta¬ 
morphism. 

Theingsvaag,  Soggendal, 
Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  No.  5,  p.  142. 

Quartz-norite. 

Al-As  high. 

MgO  low. 

Rekefjord,  Norway. 

C;  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  No.  5,  p.  79. 

Quartz-norite. 

Birkrem,  Norway. 

C.  F.  Kolderup. 

C.  F.  Kolderup, 

Berg.  Mus.  Aarb., 

1896,  No.  5,  p.  96. 

Norite. 

Facies  of  gran¬ 
ite. 

Sone  River,  S.  Rewa, 
India. 

P.  Briihl. 

T.  H.  Holland, 

Rec.  G.  S.  Ind., 

XXX,  p.  20,  1897. 

Olivine-norite. 

Alkalies  not  de 
termined. 

Duluth,  Minnesota. 

A.  N.  WinChell. 

A.  N.  Winchell, 

A.  G.,  XXVI,  p.  284. 

1900. 

Troctolite. 

A1,Oq  or  CaO 
high? 

430 


CHEMICAL  ANALYSES  OF  IGNEOUS  BUCKS. 


No.  Si02  Al,0:i 


1 

B2.  Ill 
2 

B2.  Ill 

3 

B4.  V 

4 

B4.  V 

5 

D4.  V 

6 

C4.  V 

7 

B3.  IV 

8 

B4.  V 

9 

C4.  V 

10 

B4.  V 
11 

B4.  V 
12 

A4.  IV 

13 

D4.  V 

14 

A4.  IV 

15 

A4.  IV 

16 
% 

D4.  V 

17 

B4.  V 

18 
Al.  I 

19 

A4.  IV 


41. 15 


39.  32 


13.51 


Fe203 


2.  32 


14.  48  2.  01 


44.44  23.19  12.70 


50.  89  !  15.  39  i  5.  77 


44.  51  i  19. 99 


45.46  19.94 


51.46  1  13.98 


50.61  18.34 


52.  06  13.  67 


51.08  1  23.58 


47.  87  14.  43 


45.  73 


42.  07 


37.  09 


43.  62 


39.  55 


13.  48 


32.  05 


13. 19 


17.30 


7.  22 


15.  36 


43.41  19.42  5.72 


44.86  !  17.24  11.12 


2.  66 


50.81  !  13.25  14.66 


n.  d. 


15.  97 


6.  85 


11.55 


11.60 


9.  83 


35.  69 


14. 13 


28.76  !  16.80 


DIABASE. 


FeO 

MgO 

CaO 

Na,0 

K,0 

H20-f 

h2o 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

8.63 

10.09  I 

8.  75 

3.  21 

1.22 

3.05 

5.  54 

1.  60 

0.  61 

1.28 

100.  96 

8.  73 

11.11 

8.30 

3.  76 

0.  87 

2.57 

5.  25 

, 

1.70 

0.61 

0.  71 

99.  42 

n.  d. 

2.  82 

6.  03 

3. 93 

1.  75 

3.  73 

0.  70 

0.52 

99.  81 

n.  d. 

7.  60 

8.  75 

5.  67 

2.  72 

2.  46 

99.  25 

n.  d. 

8.11 

8. 15 

5.  24 

2.  60 

2.  93 

• 

98.  75 

n.  d. 

2.  95 

8.32 

2. 12 

3.  21 

2.30 

• 

99.  66 

6.  69 

5.  98 

9.11 

4.39 

0.  47 

3.  00 

2.  00 

0.  35 

100.  54 

n.  d. 

4.98 

7.  53 

1.50 

2.  81 

2.  44 

inll.,0 

6.  66 

0.41 

trace 

99.  55 

« 

8.  92 

7.59 

10. 49 

4. 

75 

n.  d. 

1.06 

0.17 

101.08 

n.  d. 

6.  97 

10.  96 

0.  76 

1.  71 

0.  88 

100.  00 

13.  91 

6.  73 

7.01 

. 

1.60 

1.08 

1.72 

100.  00 

n.  d. 

5.01 

8. 15 

3.36 

0.  86 

1.05 

100. 13 

2.  953 

n.  d. 

4.95 

9.  36 

2. 

34 

n.  d. 

0.39 

100.  00 

n.  d. 

10.  58 

10.45 

3. 47 

0.  61 

1.82 

100.  78 

n.  d. 

15.40 

9.  92 

3.24 

0.  47 

0.94 

100.  78 

3.026 

n.  d. 

1.38 

0.  95 

1, 

11 

12. 13 

0.  48 

100.  00 

n.  d. 

0.  57 

0.  41 

1.75 

0.  33 

11.  83 

100.  86 

6.  83 

2.34 

1.63 

3. 45 

3.  03 

2.  93 

0.  3Q 

2.  75 

1.34 

trace 

99.  74 

n.  d. 

0. 59 

0.  37 

trace 

trace 

13.  26 

!  0.64 

1 

0.  IQ 

i  trace 

i  100.07 

INFERIOR  ANALYSES. 


437 


DIABASE. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Auburn,  Maine. 

Packard. 

G.  P.  Merrill, 

A.  G., 

X,  p.  54,  1892. 

Diabase. 

Not  fresh. 

Lewiston,  Maine. 

Packard. 

G.  P.  Merrill, 

A.  G., 

X,  p.  54,  1892. 

Diabase. 

Not  fresh. 

Medford ,  Massachusetts. 

G.  P.  Merrill? 

G.  P.  Merrill, 

B.  G.  S.  A., 

VII,  p.  353,  1896. 

Diabase. 

Not  fresh. 

Cf.  No.  5,  an- 
dose. 

Indian  Point,  Upper 
Chateaugay  Lake, 

New  York. 

A.  S.  Eakle. 

A.  S.  Eakle, 

A.  G., 

XII,  p.  35,  1893. 

Diabase. 

Upper  Chateaugay 

Lake,  Clinton 

County,  New  York. 

A.  S.  Eakle. 

A.  S.  Eakle, 

A.  G., 

XII,  p.  35,  1893. 

Diabase. 

Palmer  Hill,  Essex 
County,  New  York. 

J.  F.  Kemp. 

Kemp  and  Marsters, 

B.  U.  S.  G.  S.,  107, 
p.  26,  1893. 

Diabase. 

Keene  Valley,  Adiron¬ 
dack  Mountains, 

New  York. 

A.  R.  Leeds. 

Leeds  and  Julien, 

30  A.  R.  N.  Y.  Surv., 
p.  102,  1867. 

Diabase. 

Cf.  Kemp  and 
Marsters. 
B.U.S.G.S.,107, 
p.  26,  1893. 

Fort  Montgomery, 
Hudson  River,  New 
York. 

L.  M.  Dennis. 

J.  F.  Kemp, 

Am.  Nat.,  1888, 
p.  694. 

Hornblende- 

diabase. 

Ti02  high. 

Rocky  Hill,  New  Jersey. 

A.  H.  Phillips. 

A.  H.  Phillips, 

A.  J.  S., 

VIII,  p.  279,  1899. 

Diabase. 

Little  Falls,  Passaic 
County,  New  Jersey. 

W.  C.  Day. 

W.  C.  Day, 

20  A.  R.  U.  S.  G.  S., 

VI,  p.  419,  1899. 

Diabase. 

Calc,  to  100$? 

Mine  Brook,  Somerset 
County,  New  Jersey. 

T.  B.  Stillman. 

W.  C.  Dav, 

20  A.  R.  U.  S.  G.  S., 

VI,  p.  419,  1899. 

Diabase. 

Calc,  to  100%? 

Pittsylvania  County, 
Virginia. 

T.  L.  Watson. 

T.  L.  Watson, 

A.  G., 

XXII,  p.  87,  1898. 

Quartz-diabase. 

Chatham,  Pittsylvania 
County,  Virginia. 

T.  L.  Watson. 

T.  L.  Watson, 

A.  G., 

XXIV,  p.  360,  1899. 

Diabase. 

A1203  high, 
Fe203  low. 

Chatham,  Pittsylvania 
County,  Virginia. 

T.  L.  Watson. 

T.  L.  Watson 

A.  G., 

XXII,  p.  87,  1898. 

Olivine-diabase. 

Not  fresh. 

Chatham,  Pittsylvania 
County,  Virginia. 

T.  L.  Watson. 

T.  L.  Watson. 

A.  G., 

XXII,  p.  87,  1898. 

Olivine-diabase. 

Chatham,  Pittsylvania 
County,  Virginia. 

T.  L.  Watson. 

T.  L.  Watson, 

A.  G., 

XXIV,  p.  360,  1899. 

Diabase. 

Not  fresh. 

Chatham,  Pittsylvania 
County,  Virginia. 

T.  L.  Watson. 

T.  L.  Watson, 

A.  G., 

XXII,  p.  87,  1898. 

Olivine-diabase. 

Not  fresh. 

Cr203  none 

NiO  none 

BaO  0.09 

SrO  trace 

Li20  trace 

Near  Boone,  Watauga 
County,  North  Caro¬ 
lina. 

II.  N.  Stokes. 

A.  Keith, 

B.  U.  S.  G.  S.,  168, 
p.  53,  1900. 

Metamorphosed 

amygdaloid. 

Cr»03  trace 

Wadesboro,  North 
Carolina. 

T.  M.  Chatard. 

1 

I.  C.  Russell, 

B.  U.  S.  G.  S.,  52, 
p.  18,  1889. 

Diabase. 

Not  fresh. 

438 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS 


No. 


20 

B4.  V 
21 

D4.  V 
22 

D4.  V 

23 

D4.  V 

24 

D4.  V 

25 

Al.  I 

26 

B2.  Ill 

27 
Al.  I 

28 
Al.  I 

29 

B4.  V 

30 

D4.  V 

31 

D4.  V 

32 


B2.  Ill 

33 

D2.  V 

34 

D4.  V 

35 

A2.  II 

36 

1)4.  V 

37 

C4.  V 

38 

A4.  IV 


DIABASE — Continued. 


Si02 

A1A 

Fe2Os 

FeO 

MgO 

CaO 

Nad) 

K20 

ti2c+ 

|  49.90 

16.32 

n.  d. 

13.54 

6.  22 

6.  58 

1.82 

2.  25 

0.  76 

|  48.08 

23.  67 

9. 07 

n.  d. 

3.  92 

10.  99 

1.  92 

0.  49 

0.  83 

j  47.  50 

22.  44 

7.40 

n.  d. 

3.  71 

10.  21 

1.62 

1.29 

2.  85 

j  47.  84 

25.  40 

6.72 

n.  d. 

5.  25 

8.  44 

2.  55 

0.  60 

2.  53 

J  47.  83 

30.  28 

4.57 

n.d. 

4.32 

6.  72 

1.30 

trace 

2.05 

|  46.  85 

22.  62 

5.12 

1.58 

2.  01 

1.25 

0.  80 

2.  66 

8.25 

|  41.  60 

37.  20 

3.  21 

0.30 

0.  02 

0.  23 

0.  07 

13.54 

1  54.  66 

15.  85 

1.82 

5. 12 

5.64 

8.  75 

3.  46 

0.47 

2.  48 

|  45.  74 
) 

5.  29 

0. 13 

2.  06 

0.  94 

23.  85 

0. 11 

1.  29 

1.07 

i  46.  28 

1 

12.  96 

4.  67 

6.  06 

8.71 

10.12 

3.  75 

3.34 

l  45. 59 

) 

20.  99 

2.  49 

4.  36 

8.  95 

7.  57 

4. 

'89 

5.06 

\  44. 71 

15.  54 

3.  06 

6.  43 

6.  80 

10.  50 

2. 

55 

5.  90 

I 

•  46.  98 

14.  94 

5.01 

4.  88 

6.  86 

5. 40 

3.  52 

1. 10 

4.  48 

1  54.  21 

f 

21.32 

2.  35 

4.  45 

4.  77 

8.  99 

1.79 

0.  74 

none 

j  51. 19 

24.  52 

1.46 

4.  67 

5.  33 

9.  58 

2.09 

0.  60 

0.30 

|  49.  80 

13. 93 

2.  24 

8.  07 

8.  85 

7.96 

2.  02 

0. 19 

2.  20 

|  53.  55 

15.  54 

15.  79 

n.  d. 

5.  79 

6.  71 

1.41 

1.96 

1.83 

|  51.85 

13.  50 

16.  43 

n.  d. 

5.  49 

8.  80 

3. 10 

0.  91 

0.  93 

j  53.  70 

18.21 

10.  64 

n.  d. 

5.  24 

6.  66 

2.  65 

0.  99 

1.55 

H20- 

co2 

TiOa 

P-A 

MnO 

Sum 

Sp.  gr. 

1.47 

0.17 

trace 

99. 03 

3.  026 

1.11 

100.  08 

3.  030 

0.  34 

97.  36 

2.  927 

0.  94 

100.  27 

3.  080 

2. 19 

• 

. 

99.  26 

3.  028 

3. 12 

1.89 

1. 12 

0. 16 

2.54 

■ 

100. 15 

0.  29 

0.38 

3.  79 

0. 14 

0.08 

100.  85 

0.  25 

0.39 

0.67 

0. 15 

0. 18 

100.  02 

0.  22 

18.  91 

0.  36 

0.  07 

0.26 

100.  79 

3.54 

trace 

99.  43 

2.  921 

99.  90 

2.  707 

2.  88 

trace 

98.  37 

2.  858 

5.  39 

0.  42 

0.  49 

99.  47 

2.  703 

• 

0.04 

1.49 

0.  01 

0.21 

100.  37 

3.010 

none 

0.  40 

0.01 

trace 

100. 15 

OO 

5C 

oi 

4.  87 

0.  08 

trace 

trace 

100.  21 

102.  58 

3.02 

101.01 

99.  64 

I 


INFERIOR  ANALYSES. 


439 


DIABASE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Blezard  Mine,  Sudbury, 
Ontario. 

T.  L.  Walker? 

• 

T.  L.  Walker, 

Q.  J.  G.  S., 

LIII,  p.  56,  1897. 

Diabase. 

Whitefish  Bay,  Rainy 
Lake,  Canada. 

F.  T.  Shutt. 

A.  C.  Lawson, 

A.  G., 

VII,  p.  161,  1891. 

Diabase. 

A1203  high. 

30  feet  from  con¬ 
tact. 

Whitefish  Bay,  Rainy 
Lake,  Canada. 

F.  T.  Shutt. 

A.  C.  Lawson, 

A.  G., 

VII,  p.  161,  1891. 

Diabase. 

Sum  low. 

A1203  high. 

At  contact. 

Stop  Island,  Rainy 

Lake,  Canada. 

F.  T.  Shutt. 

A.  C.  Lawson, 

A.  G., 

VII,  p.  158,  1891. 

Diabase. 

A1203  high. 

4  feet  from  con¬ 
tact. 

Stop  Island,  Rainy 

Lake,  Canada. 

F.  T.  Shutt. 

A.  C.  Lawson, 

A.  G., 

VII,  p.  158,  1891. 

Diabase. 

A1203  high. 

At  contact. 

NiO 

BaO 

0.08 

0. 10 

Section  13,  T.  47  N. ,  R.  46 
W.,  Penokee  Gogebic 
Region,  Michigan. 

T.  M.  Chatard. 

C.  H.  Van  Hise, 

M.  U.  S.  G.  S., 

XIX,  p.  357,  1892. 

Diabase. 

Altered. 

Cf.  No.  18 
auvergnose. 

BaO 

trace 

Aurora  Mine,  Penokee 
Gogebic  Region, 
Michigan. 

T.  M.  Chatard. 

C.  II.  Van  Hise, 

M.  U.  S.  G.  S., 

XIX,  p.  357,  1892. 

Diabase. 

Altered. 

FeSo 

NiO" 

BaO 

SrO 

LioO 

0.09 

trace? 

0.04 

trace 

none 

Butte  County,  Cali¬ 
fornia. 

W.  F.  Hille- 
brand. 

H.  W<  Turner, 

14  A.  R.  U.  S.  G.  S., 

II,  p.  473,  1894. 

Diabase-tuff. 

FeS., 

BaO" 

SrO 

LioO 

0.49 

trace 

none 

trace 

North  Station  Mine, 
Nevada  County,  Cali¬ 
fornia. 

W.  F.  Hille- 
brand. 

W.  Lindgren, 

17  A.  R.  TJ.  S.  G.  S., 

II,  p.  149,  1896. 

Diabase. 

Altered  wall 
rock. 

Point  Bonita,  Marin 
County,  California. 

F.  L.  Ransome. 

F.  L.  Ransome, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  106,  1893. 

Diabase. 

K20  calc,  as 
Na20. 

Point  Bonita,  Marin 
County,  California. 

F.  L.  Ransome. 

F.  L.  Ransome, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  106,  1893. 

Diabase. 

K.,0  calc,  as 
Na20. 

Point  Bonita,  Marin 
County,  California. 

F.  L.  Ransome. 

F.  L.  Ransome, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  106,  1893. 

Diabase. 

K20  calc,  as 
Na20. 

Sum  low. 

Miahuatlan,  Oaxaca, 
Mexico. 

A.  Rdhrig. 

H.  Lenk, 

in  Felix  and  Lenk, 

Btr.  G.  Mex., 

II,  p.  123,  1899. 

Olivine-diabase. 

Not  fresh. 

S 

trace 

Average  sample,  Deme- 
rara  River,  British 
Guiana. 

Assistant  of  J.  B. 
Harrison. 

J.  B.  Harrison, 

Rep.  G.  Ess.  River, 
p.  64,  1900. 

Diabase. 

A1203  high. 
Dried  at  110°. 

S 

trace 

Average  sample, 

Potaro  River,  British 
Guiana. 

Assistant  of  J.  B. 
Harrison. 

J.  B.  Harrison, 

Rep.  G.  Ess.  River, 
p.  64,  1900. 

Diabase. 

A1203  high. 
Dried  at  110°. 

S 

none 

Caman’s,  Barama 

River,  British 

Guiana. 

J.  B.  Harrison. 

J.  B.  Harrison, 

Rep.  G.  N.  W.  Distr., 

II,  p.  12,  1898. 

Diabase. 

Not  fresh. 

Hapueu,  Sao  Paolo, 
Brazil. 

Not  stated. 

F.  de  P.  Oliveira, 
cf.  N.  J.,  1891, 

II,  p.  304. 

Diabase. 

Sum  high. 

Bufao,  Sao  Paolo, 

Brazil. 

Not  stated. 

F.  de  P.  Oliveira, 
cf.  N.  J.  1891, 

II,  p.  304. 

Diabase. 

High  Green,  Belling¬ 
ham,  England. 

J.  E.  Stead. 

J.  J.  H.  Teall, 

Q.  J.  G.  S., 

XL,  p.  240,  1884. 

Diabase. 

440 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


DIABASE — Continued. 


No. 

Si02 

A1,03 

Fe2Os 

FeO 

MgO 

CaO 

Na20 

K20 

H20  + 

H,0 — 

39 

A4.  IV 

j  51.  20 

20.  03 

7.  57 

n.  d. 

6.  75 

10.  52 

1.71 

0.51 

1.70 

40 

B4.  V 

J  36.  80 

22.  95 

n.  d. 

4.  08 

2.85 

9.  73 

0.  50 

1. 10 

7.  70 

41 

D4.  V 

J  51.  20 

17.34 

12.  43 

n.d. 

4.71 

6.  35 

3.  28 

1.92 

2.  77 

42 

B4.  V 

J  52.  81 

19.  83 

11.89 

n.d. 

5.  32 

0.  95 

3.  54 

2.  71 

3. 10 

43 

C3.  V 

j  52.  91 

21.  77 

3. 47 

4.30 

2. 19 

6.  82 

4.  93 

2.  51 

0.  91 

44 

A4.  IV 

J  52.  69 

18.  93 

10.  99 

n.  d. 

2.  56 

5.  31 

4.04 

2.11 

2.  76 

45 

A4.  IV 

|  50.  95 

17.50 

14.  42 

n.  d. 

2.  63 

6.  85 

3.  38 

1.  65 

2.  02 

46 

A4.  IV 

|  50.  65 

18.  45 

13.  80 ' 

n.  d. 

2.  68 

6.  22 

3.  71 

1.92 

2.  02 

47 

A4.  IV 

48 

j  49.  20 
] 

19. 13 

13.  60 

n.  d. 

3.  Q8 

7. 18 

3.  63 

1.  89 

1.31 

A4.  IV 

47.  97 

11.26 

9.  09 

5.  46 

3.  95 

11.  76 

5. 

14 

2.  54 

49 

D2.  V 

|  46.  54 

16.  88 

3.  20 

7.  41 

9.  77 

9.54 

3. 14 

0.  63 

0.  69 

50 

D3.  V 

J  49.  36 

18.  52 

3.  91 

10.13 

3.37 

7.  55 

3.  45 

1.89 

0.80 

51 

D3.  V 

j-  49. 17 

14.  59 

3.  91 

12.  94 

4.  32 

8.  78 

3.  68 

0.  79 

0.  58 

-52 

B3.  IV 

1  46.  50 

13.  54 

12.  39 

7.  04 

6.  30 

9.  60 

2.  09 

1.83 

53 

B3.  IV 

J  46.  38 

12.  86 

12.  08 

8.04 

6.22 

10.  55 

2.13 

1.  80 

54 

B3.  IV 

j  46.  32 

12.  81 

13.  06 

7.  93 

6.  97 

9.  03 

2. 13 

1.74 

55 

B3.  IV 

|  45.  75 

12.  41 

13.  23 

8.23 

5.  07 

11.41 

2. 18 

1.  71 

56 

B3.  IV 

j  45.  68 

11.96 

12.  78 

8.  77 

5.  60 

11.21. 

2. 11 

1.  88 

57 

B3.  IV 

|  43.  74 

11.99 

17.64 

12.  20 

4.  39 

7.  61 

2. 19 

1.80 

58 

D'2.  V 

j  52.  40 

19.  47 

4. 15 

3.  80 

2.  26 

8.  60 

4.  45 

1.11 

2.  77 

Ti02 

PA 

MnO 

Sum 

99.99 

2.  60 

0.  75 

trace 

100.  96 

1.08 

1.27 

102.  35 

100. 15 

99.  32 

0.  60 

0.  80 

• 

100.  79 

0.50 

0.  78 

100.  68 

0.  50 

0.  78 

100. 73 

0.  56 

0.  75 

100. 33 

1.68 

99.  72 

0.  96 

trace 

98.  76 

98.  98 

98.  76 

99.  29 

100. 63 

99.  99 

99.94 

99.  99 

100.  56 

0. 19 

1.98 

101.61 

Sp.  gr. 


2.  885 


INFERIOR  ANALYSES. 


441 


I)  I A  BASE — Conti  n u  e d . 


Inclusive. 


S03  0.43 


Locality. 

Analyst. 

Reference. 

Author’s  name. 

Morpeth,  England. 

J.  E.  Stead. 

J.  J.  H.  Teall, 

Q.  J.  G.  S., 

XL,  p.  239,  1884., 

Diabase. 

Newhalls,  Queens- 
ferry,  Scotland. 

E.  Stecher. 

E.  Stecher, 

T.  M.  P.  M., 

IX,  p.  190,  1898. 

White  trap. 

Pelvoux,  France. 

P.  Termier. 

P.  Termier, 

C.  R., 

CXXIV,  p.  635,  1897. 

Diabase. 

Pelvoux,  France. 

P.  Termier. 

P.  Termier, 

C.  R., 

CXXIV,  p.  635,  1897. 

Diabase. 

Holmestrand,  Kristi- 
ania  Fjord,  Norway. 

G.  Sarnstrom. 

W.  C.  Brogger, 

Z.  K., 

XVI,  p.  28,  1890. 

Diabase-porphyrite. 

Kullen,  Sweden. 

L.  G.  Thome. 

A.  Hennig, 
cf.  n.  j:  1901, 

II,  p.  59. 

Kullaite. 

Molle,  Kullen,  Sweden. 

L.  G.  Thome. 

A.  Hennig, 
cf.  N.  J.  1901, 

11,  p.  59. 

Konga  diabase. 

Bokebolet,  Kullen, 
Sweden. 

L.  G.  Thome. 

A.  Hennig, 
cf.  N.  I.  1901, 

II,  p.  59. 

Konga  diabase. 

Tanga,  Kullen,  Sweden. 

L.  G.  Thome. 

A.  Hennig, 
cf.  N.  J.  1901, 

II,  p.  59. 

Olivine-diabase. 

Ottfjall,  Sweden. 

P.  J.  Holmquist. 

P.  J.  Holmquist, 

G.  F.  F., 

XVI,  p.  190,  1894. 

Diabase. 

Krustorp,  Brefven, 
Sweden. 

K.  Winge. 

K.  Winge, 

(t  f  f 

VXlil,  p.  195,  1896. 

Olivine  diabase. 

Foglo,  Aland,  Finland. 

H.  Berghell. 

B.  Frosterus, 

Finl.  G.  Und., 

Bl.  25,  p.  23,  1894. 

Diabase. 

Foglo,  Aland,  Finland. 

H.  Berghell. 

B.  Frosterus, 

G.  F.  F., 

XV,  p.  285,  1893. 

Diabase. 

Sundholm,  Nystad, 
Finland. 

Not  stated. 

H.  Gylling, 

Finl.  G.  Und., 

Bl.  12,  p.  55,  1888. 

Diabase. 

Padoi,  Letala,  Finland. 

Not  stated. 

H.  Gylling, 

Finl.  G.  Und., 

Bl.  12,  p.  55,  1888. 

Diabase. 

Leinmaki,  Letala, 
Finland. 

Not  stated. 

H.  Gylling, 

Finl.  G.  Und., 

Bl.  12,  p.  55,  1888. 

Diabase. 

Rautavuori,  Letala, 
Finland. 

Not  stated. 

H.  Gylling, 

Finl.  G.  Und.,  Bl.  12, 
p.  56,  1888. 

Diabase. 

Heuru,  Honkilahti, 
Finland. 

Not  stated. 

H.  Gylling, 

Finl.  G.  Und.,  Bl.  12, 
p.  56,  1888. 

Diabase. 

Kivijarvi,  Eura, 

Finland. 

Not  stated. 

H.  Gylling, 

Finl.  G.  Und.,  Bl.  12, 
p.  56,  1888. 

Diabase. 

Balkhausen,  Hesse 
Darmstadt 

R.  Marzahn. 

Chelius  and  Klemm, 

•  Erl.  G.  Kte.  Hesse, 

IV,  p.  37,  1896. 

Diabase. 

Remarks. 


Not  fresh. 


Sum  high. 


Not  fresh. 


A1203  high. 


-Ignited  before 
analysis. 


Ignited  before 
analysis. 


Ignited  before 
analysis. 


Ignited  before 
analysis. 


Ignited  before 
analysis. 


Ignited  before 
analysis. 

Not  fresh. 

P,05  high. 


442 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


DIABASE— Continued. 


No. 

Si02 

Al-A 

FeA 

FeO 

MgO 

CaO  ; 

Nad') 

k2o 

H20+ 

H20- 

co2 

Ti02 

FA 

MnO 

Sum 

Sp.  gr. 

59 

A3.  Ill 

|  61.  03 

21.41 

4.  81 

1.47 

0.56 

2.  54 

4.44 

2.  20 

1.04 

0.16 

99.  99 

60 

A3.  Ill 

j  44. 28 

18.  72 

4.  01 

10.24 

7.  64 

7.  55 

3. 49 

0.  74 

1.  75 

0.  67 

0.  93 

100.  43 

61 

A3.  Ill 

|  48.  40 

15.  33 

2.  66 

11.04 

7.  06 

4.  61 

1.89 

1.39 

3.  25 

4.  94 

100.  57 

62 

C3.  V 

|  47.  89 

12.  07 

5.  73 

11.08 

6.  56 

4.  94 

2. 14 

1.37 

2.  99 

6.  53 

101.30 

63 

C‘2.  IV 

j  45.  83 

15.43 

3.04 

7. 96 

6.19 

5.92 

2.  32 

2.19 

3.  67 

3.  95 

1.61 

0.  29 

99. 10 

2.  756 

64 

A2.  II 

|  45.  81 

14.  92 

1.99 

6.  52 

7.  62 

9.32 

4.  54 

0.  31 

4. 11 

3.  88 

0.  70 

0. 11 

99.  89 

2.  814 

65 

A2.  II 

|  49.  03 

12.  63 

3.68 

10.94 

1.64 

7.  76 

2.  33 

2.  40 

3.  42 

3. 45 

2.  06 

0.  54 

100.  39 

2.  82 

66 

A2.  II 

|  44.  70 

14. 12 

0.97 

8.  85 

6.  07 

10.  20 

2.34 

0. 14 

4.  79 

5.  50 

1.71 

0. 15 

99.  86 

2.  84 

67 

A4.  IV 

1  55. 95 

19.  47 

4.09 

1.08 

4.  24 

7.  84 

2. 

64 

3.  78 

1.60 

100.  69 

2.  806 

68 

C2.  IV 

! 

j  50.  03 

15.46 

4.  25 

6.19 

7.  73 

8.  25 

2.  82 

1.48 

4.  28 

inH20 

0.  29 

0.  53 

101.  31 

69 

A3.  Ill 

|  46.  95 

17.40 

6. 11 

3.  99 

5.34 

7.  25 

4.  26 

1.18 

5.00 

2.  33 

99.  81 

70 

D3.  V 

j  45. 98 

19.  93 

8.  62 

6.  04 

5. 46 

6.  29 

3.  41 

1.29 

2. 40 

99.42 

71 

A4.  IV 

|  44.45 

14.  02 

14.24 

n.  d. 

9.  45 

6.  54 

6.  72 

0.  83 

4. 14 

0.  45 

0.  32 

101. 16 

2.63 

72 

A3.  Ill 

|  49. 62 

13.  47 

4.  72 

10.  21 

9.18 

6.  22 

1.03 

0.  43 

5.  02 

0.  16 

0.51 

100.57 

2.  723 
15° 

73 

D3.  V 

|  48. 15 

20.  28 

1.31 

10.  01 

6.34 

0.  71 

5.  30 

1.35 

6.34 

99.  79 

2.  72 

r  i 

i  4 

D4.  V 

l  49. 92 

14.84 

11.93 

n.  d. 

3.  84 

10.  50 

5. 

72 

3.  25 

10O.  00 

75 

C4.  V 

|  49.  71 

17.45 

6.  56 

n.  d. 

7.01 

10.  76 

3.74 

3.24 

1.82 

101.  29 

76 

A4.  IV 

|  49. 19 

16.  83 

1.96 

8.15 

7.50 

12.38 

3.24 

n.d. 

1.41 

100.  66 

i  l 

A4.  IV 

J  45.  78 

21.23 

9.57 

n.  d. 

5.81 

8.  06 

3.  57 

2.  71 

3.  45 

100. 18 

78 

A4.  IV 

J  48.  31 

18.51 

14.  53 

n.  d. 

4.45 

5. 40 

3.  42 

1.82 

3.  88 

100.  32 

INFERIOR  ANALYSES. 


443 


DIABASE — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

s 

0.33 

Ruppertshain,  Taunus 
Mountains, 

Rh.  Prussia. 

L.  Milch. 

L.  Milch, 

Z.  D.  G.  G., 

XLI,  p.  432,  1889. 

Diabase. 

s 

0. 41 

Rauenthal,  Taunus 
Mountains, 

Rh.  Prussia. 

■ 

L.  Milch. 

L.  Milch, 

Z.  D.  G.  G., 

XLI,  p.  430,  1889. 

Diabase. 

Near  Ronneburg, 
Thuringia. 

C.  A.  Muller. 

C.  A.  Muller, 

Inaug.  Diss.  Gera, 

1884,  p.  32. 

Diabase. 

Near  Ronneburg, 
Thuringia. 

C.  A.  Muller. 

C.  A.  Muller, 

Inaug.  Diss.  Gera, 

1884, p.  31. 

Diabase. 

so3 

Org. 

0. 15 

0.55 

Thalexweiler,  Blatt 
Lebach,  Prussia. 

Not  stated. 

Weiss  and  Grebe, 

Erl.  G.  Kte.  Pr.  Bl.  Lebach, 
p.  38,  1889. 

Diabase. 

S 

0.06 

Blatt  Allendorf, 

Prussia. 

Not  stated. 

F.  Beyschlag, 

Erl.  G.  Kte.  Pr.  Bl.  Allendorf, 

p.  11,  1886. 

Diabase. 

so3 

0.51 

Garkenholz,  Rubeland, 
Harz  Mountains. 

K.  Bottcher. 

K.  A.  Lossen, 

Z.  D.  G.  G., 

XL,  p.  204,  1888. 

Hysterobase. 

so3 

Org. 

0.24 

0.08 

Wendefurt, 
n.  St.  Wendel, 

Harz  Mountains. 

K.  Gremse. 

K.  A.  Lossen, 

Jb.  Pr.  G.  L-A., 

X,  p.  266,  1892. 

Leucophyr. 

Zahbelic,  Prague, 
Bohemia. 

J.  Nevole. 

B.  Macha, 
cf.  N.  J.,  1901, 

I,  p.  60.  • 

Diabase 

(spessartite-like) . 

Podbaka,  Moldauthal, 
Bohemia. 

Strnad. 

J.  Klvana, 
cf.  N.  J.,  1898, 

I,  p.  485. 

Olivine-diabase. 

' 

Radotin,  Bohemia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien.  G.  R-A., 

XXXIII,  p.  350,  1899. 

Diabase. 

Galleno,  Adamello, 
Tyrol. 

C.  Riva. 

C.  Riva, 
cf.  N.  J.,  1887, 

II,  p.  65. 

Diabase. 

Nozza,  Yal  Sabbia, 
Piedmont. 

C.  Riva. 

C.  Riva, 

Rend.  Inst.  Lomb., 

XXVI,  p.  433,  1893. 

Olivine-diabase. 

Rossena, 

Reggio  Emilia,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 
separate  from  ? 

Diabase. 

Ajaccio,  Corsica. 

M.  Gels. 

M.  Oels, 
cf.  N.  J.,  1896, 

I,  p.  47. 

* 

Diabase. 

Jalguba,  Gov.  Olonez, 
Russia. 

Loewinson- 

Lessing. 

Loewinson-Lessing, 

T.  M.  P.  M., 

YI,  p.  294,  1885. 

Diabase-aphanite. 

Sejovica,  Sofia, 

Bulgaria. 

L.  Dimitrov. 

L.  Dimitrov, 

Ds.  Wien.  Ak., 

LX,  p.  514,  1893. 

Epidiabase. 

Assa,  Caucasus. 

Loewinson- 
Lessing  and 
Krikmeyer. 

Loewinson-Lessing, 
cf.  N.  J.,  1899, 

II,  p.  234. 

Diabase. 

Kolotanis,  Caucasus. 

Makerow. 

Loewinson-Lessing, 
cf.  N.  J.,  1899, 

II,  p.  234. 

Diabase. 

Maschur  Spring, 
Firuskuh,  Persia. 

C.  v.  John. 

C.  v.  John, 

Jb.  Wien.  G.  R-A., 

XXXIY,  p.  121,  1884. 

Diabase. 

Remarks. 


Much  altered. 


Pressed  zone. 


Not  fresh. 


Not  fresh. 


Not  fresh. 


Not  fresh. 

Not  fresh. 

Also  in  Sb.  Pr.G. 
L-A.  X,  p. 
293,  1892. 

Not  fresh. 

Not  fresh. 

Not  fresh. 


Not  fresh. 


AL,Os  high. 


Not  fresh. 


Not  fresh. 


Not  fresh. 
A1203  high. 
Ca*0  low? 


444 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


DIABASE — -Continued. 


No. 

Si02 

A1A 

Fe,G3 

FeO 

MgO 

CaO 

Na20 

K20 

11,0+ 

1LO 

co2 

Ti02 

MnO 

Sum 

Sp.  gr. 

79 

1  47.  51 

16.00 

16.  26 

n.  d. 

7.  88 

7.63 

2.29 

1.01 

3.  25 

101.33 

C4.  V 

1 

80 

43.  44 

16.  49 

4.54 

9. 02 

4.  02 

10.  50 

3.68 

3.  56 

3.06 

0.  87 

0. 16 

99.  34 

' 

B2.  Ill 

1 

81 

1  53. 02 

16.  53 

1.92 

7.  51 

2.  63 

0.  51 

4.45 

2.  40 

1.81 

0.59 

0.  29 

99.  95 

A3.-  Ill 

1 

82 

1  49. 78 

14. 49 

0.  81 

7. 46 

9.  53 

13.44 

1.71 

0.  68 

1.43 

0.  05 

99.  38 

B3.  IV 

j 

83 

i  48.  55 

14.  88 

n.  d. 

10.  73 

11.  69 

12.  65 

1.42 

0.  29 

0.  46 

0. 11 

100.  28 

A4.  IV 

1  • 

64 

i  50.  22 

19.41 

8. 15 

n.  d. 

7. 14 

10.  20 

3.84 

1.20 

1. 10 

101.26 

C4.  V 

1 

85 

1  49.  35 

27.  09 

6.  22 

5.49 

2.  45 

3.  65 

1.02 

1.34 

2.  88 

0.22 

99.  72 

D3.  V 

J 

86 

1  47.  25 

17.84 

5.  46 

7.  20 

5.97 

5. 15 

2.30 

0.  29 

8.  55 

0. 14 

100. 15 

2.  823 

A3.  Ill 

I 

87 

1  56. 63 

11.24 

12.  66 

5.20 

3. 15 

6.38 

3.  97 

1.24 

2.  08 

102. 55 

D3.  V 

1 

88 

53.  04 

12.  45 

9.60 

3.  35 

6.  07 

10.  23 

5.  36 

0.25 

2.  27 

102.  62 

1)3.  V 

I 

89 

1  52.44 

12.16 

13.  79 

n.  d. 

7.40 

10.  46 

1.90 

0.  49 

1.89 

100. 53 

A4.  IV 

1 

90 

49. 50 

18.  40 

13. 10 

n.  d. 

5.  25 

2.24 

4.  65 

1.48 

5.  23 

99.  65 

D4.  V 

j 

91 

1  46.  60 

16.  90 

11.60 

n.  d. 

9.35 

2.  76 

4.  67 

0.  63 

7. 12 

99.  74 

1)4.  V 

1 

MELAPHYRE. 


1 

1  49.  24 

14.  79 

1.36 

8.  00 

6.  89 

10.  74 

2.  76 

0.  88 

2.97 

0.  20 

0.  90 

0.  96 

0.  17 

0. 18 

100.  08 

Al. 

jJ 

2 

A4.  IV 

3 

|J  50.17 

18.  03 

12.  96 

n.  d. 

6. 12 

8.  86 

3.  00 

0.  81 

1.02 

100. 97 

1  49. 58 

19. 16 

14.  61 

n.  d. 

3.  94 

9. 10 

1. 

08 

* 2 .  87 

• 

100. 34 

2.  981 

D4.  V 

j 

4 

1 1  45.  75 

13.  40 

8.21 

6.  35 

7.  29 

12.  05 

1.33 

1.  75 

2.  95 

0.  25 

99.  32 

B4.  V 

P 

5 

1  52.49 

15.  91 

8.01 

0.  55 

5.  01 

5.69 

3.09 

2.  66 

4.46 

0.01 

0.  99 

0.  37 

100. 30 

2.  622 

A2.  II 

P 

6 

1  48.  27 

17.13 

1.85 

4.  89 

3.  06 

9.  77 

3.  06 

2. 42 

1.59 

6.  90 

0.  99 

0. 19 

100.  21 

2.  733 

A2.  II 

J 

INFERIOR  ANALYSES. 


445 


DIABASE — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks.  . 

Buhemin, 

Elburz  Mountains, 
Persia. 

E.  Drasche. 

E.  Drasche, 

Vh.  Wien.  G.  R-A., 

1884,  p.  196. 

Olivine-diabase. 

Dried  at  120°. 

Matotsehin  Scharr, 

Nova  Zerabla. 

A.  Wichmann. 

A.  Wichmann, 

Z.  D.  G.  G., 

XXXVIII,  p.  527,  1886. 

Diabase. 

Not  fresh. 

CaC03  8.29 

Konyam  Bay,  Siberia. 

Lindstrom, 

Lindstrom, 
cf.  N.  J.,  1885, 

I,  p.  430. 

Diabase-aphanite. 

Not  fresh. 

Hammong  Oramang, 
Siberia? 

Lindstrom, 

Lindstrom, 
cf.  N.  J.,  1885, 

I,  p.  430. 

Olivine-diabase. 

CoO  trace 

Dickson’s  Harbor, 
Siberia. 

Lindstrom, 

Lindstrom, 
cf.  N.  J.,  1885, 

I,  p.  430. 

Olivine-diabase. 

Hinazuru  Pass, 

Kai  Province,  Japan. 

B.  Koto. 

B.  Koto, 

Q.  J.  G.  S., 

XL,  p.  456,  1884. 

Diabase. 

Kuroda,  Kozuke, 

Japan. 

T.  Harada. 

T.  Harada, 

Die  Jap.  Inseln,  Berlin, 

1890,  p.  66. 

Schalstein. 

From  diabase. 
ALO,  high. 

Nogurizawa,  Kozuke, 
Japan. 

T. Ilarada. 

T.  Harada, 

Die  Jap.  Inseln,  Berlin, 

1890,  p.  66. 

Schalstein. 

From  diabase. 

Powder  Tower, 
Colesburg, 

Cape  Colony. 

Trechmann  and 
Ambuhl. 

E.  Cohen,  , 

N.  J.  B.  B., 

V,  p.  237,  1887. 

Quartz-diabase. 

Sum  high. 

Richmond, 

Cape  Colony. 

Reincke  and 
Reuling. 

E.  Cohen, 

N.  J.  B.  B., 

V7,  p.  247,  1887. 

Diabase-porphyrite. 

Sum  high. 

Pietermaritzburg, 

Natal. 

G.  Bauzel. 

E.  Cohen, 

N.  J.  B.  B., 

V,  p.  233,  1887. 

Olivine-diabase. 

Kimberley,  Griqualand, 
South  Africa. 

Not  stated. 

L.  de  Launay, 

C.  R., 

CXXV,  p.  336,  1897. 

Olivine-diabase. 

A1203  high. 

CaO  low. 

Not  fresh. 

Kimberley,  Griqualand, 
South  Africa. 

Not  stated. 

L.  de  Launay, 

C.  R., 

CXXY,  p.  336,  1897. 

Olivine-diabase. 

AL.Oo  high. 

CaO  low. 

Not  fresh. 

MELAPHYRE. 


BaO 

SrO 

Li20 

0.04 

trace 

trace 

Jackson, 

Amador  County, 
California. 

W.  F.  Hillebrand. 

II.  W.  Turner, 

14  A.  R.  U.  S.  G.  S., 

II,  p.  473,  1894. 

Melaphyre  tuff. 

SaLtinho  do  Pary, 

Sao  Paulo,  Brazil. 

Not  stated. 

F.  de  P.  Oliveira, 
cf.  N.  J. ,  1891, 

II,  p.  304. 

Melaphyre. 

Agua  Clara, 

Puente  de  Chimbo, 
Ecuador. 

J.  Siemiradzki. 

J.  Siemiradzki, 

N.  J.  B.  B., 

IV,  p.  200,  1886. 

Melaphyre. 

Holmestrand, 

Kristiania  Fjord, 
Norway. 

G.  Sarnstrom. 

W.  C.  Brbgger, 

Z.  K., 

XVI,  p.  27,  1890. 

Melaphyre. 

so3 

Org 

o.os 

0.98 

Sotern,  Nahethal, 

Rh.  Prussia. 

Barwald. 

Iv.  A.  Lossen, 

Jb.  Pr.  G.,  L-A., 

X,  p.  309,  1892. 

Oli  vine-melaph  y  re. 

Not  fresh. 

S03 

0.09 

Near  Osterbrucken, 

St.  Wendel, 

Harz  Mountains. 

Fischer. 

K.  A.  Lossen, 

Jb.  Pr.  G.,  L-A., 

X,  p.  280,  1892. 

Melaphyre. 

Not  fresh. 

446 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


\ 

MELAPIIYRE — Continued. 


No.. 

SiO, 

ALA 

FeA 

FeO 

MgO 

CaO 

Xa20 

K,0 

H20+ 

H.,0- 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

7 

A2.  II 

j  46. 02 

18.  03 

7.17 

2.  78 

4.  83 

8.68 

3.31 

1.33 

3.22 

2.  90 

0.95 

0.  35 

99.  57 

2.  692 

8 

C4.  V 

|  54.93 

17.  73 

13.  55 

n.  d. 

0.  80 

4.  35 

4.  94 

2.  89 

0.  96 

trace 

100'.  15 

9 

D4.  V 

10 

B4.  V 

|  37.  79 

18.35 

11.  79 

n.  d. 

4.  69 

9.31 

9.  94 

1.89 

1.83 

5.87 

0.34 

trace 

101.  80 

|  57.  67 

24 

37 

n.  d. 

3.05 

8.  02 

2.  93 

1.12 

3.  48 

100.  64 

11 

A4.  IV 

|  52.  61 

18.  94 

9.60 

n.  d. 

3.56 

9. 14 

2.62 

0.  86 

3.  27 

99.  70 

12 

D4.  V 

|  51.  96 

20.47 

9.  55 

n.  d. 

2.  27 

4. 14 

3.  90 

2. 15 

5.  65 

100.  08 

13 

A4.  IV 

|  49.99 

15. 11 

14.  25 

n.  d. 

4.  71 

6.  04 

3.  52 

1.42 

4.  78 

99.  77 

14 

D4.  V 

J  49.  02 

20.  25 

9.30 

n.  d. 

3.  32 

8.  26 

4.09 

1.52 

4.30 

100. 07 

'  2.  80 

15 

A4.  IV 

j  50.  44 

18.  25 

n.  d. 

8.  93 

7.  86 

7. 14 

3.  25 

0.64 

3.  01 

99.  52 

BASALT. 

L 

Al.  I 

j  47.  52 

13.  91 

7. 06 

3.  76 

6.  84 

5.  71 

3.  06 

0.  77 

4.  55 

1.75 

3.  68 

1. 19 

0. 15 

0. 18 

100. 13 

2 

1. 1 

|  47.  20 

15.  36 

3.  06 

8.  87 

4.20 

5.  05 

4.  72 

1.40 

3.04 

0.16 

3.34 

3.  30 

0.36 

0.  20 

100.  26 

3 

D3.  V 

j  44.  93 

18.  32 

8.  70 

21.09 

0.  47 

1.41 

2.12 

0.  58 

trace 

trace 

2.  92 

• 

100.  54 

i 

4 

D3.  V 

J  39.  22 

4.  93 

18.12 

5.  90 

3.  61 

19.  29 

2.51 

0.  68 

0. 21 

1.24 

3.49 

99.  20 

5 

A4.  IV 

|  55. 68 

18.  93 

n.  d. 

8.  73 

4.  86 

7.  99 

2.12 

0.  48 

0.  60 

99.  39 

6 

A4.  IV 

|  51.  92 

19.  76 

11.21 

n.  d. 

3.  38 

9.30 

2. 16 

0.  60 

1.54 

99.  87 

7 

A4.  IV 

j  51 . 66 

11.22 

7.  62 

n.  d. 

13.  61 

7.  72 

5.  98 

0.89 

1.06 

trace 

0.12 

100. 13 

8 

C2.  IV 

j  49.  45 

17.58 

3.41 

3.  41 

4.  05 

7.20 

5.  83 

1.57 

4.  34 

2.  23 

trace 

99.  07 

2.  738 

9 

A4.  IV 

1 

|  45. 51 

15.  82 

15.  31 

n.  d. 

3.  98 

9.  26 

4.  98 

2.  99 

0.  48 

100.  00 

2.  836 

INFERIOR  ANALYSES. 


447 


MELAPHYRE — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SO-)  trace 

Sommerberg, 

Thuringer  Wald. 

C.  F.  Steffen. 

H.  Loretz, 

Jb.  Pr.  G.  L-A., 

IX,  p.  306, 1889. 

Melaphyre. 

Not  fresh. 

Tenczyner  Garden, 
Cracow,  Galicia. 

R.  Zuber. 

R.  Zuber, 

Jb.  Wien  G.  R-A., 

XXXV,  p.  752, 1885. 

Melaphyre. 

A1203  and  Fe203 
high.  FeO 
and  MgO  low. 

Colmo  di  Provaglio, 

Yal  Sabbia,  Piedmont. 

C.  Riva. 

C.  Riva, 

Rend.  Inst.  Lomb., 

XXVI,  p.  435, 1893. 

Olivine-melaphyre. 

Not  fresh. 

Na20  high. 

Koktebel,  Crimea, 

Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXI,  p.  13, 1897. 

Melaphyre. 

Not  fresh. 

Ivobosa,  Crimea,  Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXIII,  p.  27,1897. 

Melaphyre. 

Not  fresh. 

Ivaragatch,  Crimea, 
Russia. 

A.  Lagorio. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int, , 
XXXIII,  p.  27, 1897. 

Melaphyre. 

Not  fresh. 

A1203  high. 

Bodrak  River,  Crimea, 
Russia. 

A.  Lagorio. 

. 

A.  Lagorio, 

Guide  Exc.  VII  Cong.  G.  Int., 
XXXIII,  p.  27, 1897. 

Melaphyre. 

Not  fresh. 

Mount  Kastel;  Crimea, 
Russia. 

R.  Prendel. 

R.  Prendel, 
cf.  N.  J.,  1887, 

II,  p.  98. 

Melaphyre. 

A1A  high. 

Purikan,  Persia. 

C.  v.  John. 

C.  v.  John, 

Jb.  Wien  G.  R-A., 

XXXIV,  p.  133, 1884. 

Olivine-melaphyre. 

BASALT. 


NiO 

BaO 

SrO 

LioO 

trace 

trace 

none 

trace 

South  Britain,  Con¬ 
necticut. 

W.  F.  Hillebrand. 

•  . 

W.  H.  Hobbs, 

B.U.  S.G.S., 

168,  p.  35, 1900. 

Olivine-basalt. 

Not  fresh. 

so3 

F 

S 

CuO 

BaO 

SrO 

trace 

trace 

trace 

trace 

trace 

trace 

Crystal  Falls,  Michigan. 

H.  N.  Stokes. 

J.  M.  Clements, 

M.  U.  S.  G.  S., 

XXXVI,  p.  106,  1899. 

Meta  basalt. 

Complete  in 

B.  U.  S.G.S., 
148,  p.  97, 
1897. 

Alum  Hill,  Boulder 
County,  Colorado. 

C.  I.  Andrews. 

C.  I.  Andrews, 

Proc.  Colo.  Sc.  Soc., 

V,  p.  151,  1895. 

Basalt. 

FeO  high.  MgO 
and  CaO  low. 

Alum  Hill,  Boulder 

County,  Colorado. 

• 

C.  I.  Andrews. 

C.  I.  Andrews, 

Proc.  Colo.  Sc.  Soc., 

V,  p.  150,  1895. 

Basalt. 

A1.203  and  MgO 
low. 

Fe203  and  CaO 
high. 

Mount  Thielson, 

Oregon. 

F.  W.  Clarke. 

J.  S.  Hiller, 

B.  U.  S.  G.  S.,  148, 
p.  230,  1897. 

Hypersthene-basalt. 

Not  described. 

Pit  River,  Lassen  Peak, 
California. 

F.  W.  Clarke. 

J.  S.  Hiller, 

B.  II.  S.  G.  S.,  148, 
p.  200,  1897. 

Basalt. 

Hried  at  110°. 

Cr803 

0.25 

Knoxville,  California. 

W.  H.  Melville. 

G.  F.  Becker, 

M.  U.  S.  G.  S., 

XIII,  p.  159,  1888. 

Basalt. 

Point  Bonita,  Marin 
County,  California. 

F.  L.  Ransome. 

F.  L.  Ransome, 

B.  Hep.  G.  Un.  Cal., 

I,  p.  106,  1893. 

Basalt. 

Not  fresh? 

Mary  Muss  Bay,  Jan 
Mayen,  Arctic  Ocean. 

R.  Scharitzer. 

R.  Scharitzer, 

Jb.  Wien  G.  R-A., 

XXXIV,  p.  718,  1884. 

Basalt. 

448 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


No. 


10 

D4.  V 
11 

D4.  V 
12 

A2.  II 

13 

D3.  V 

14 

D4.  V 

15 

C3.  V 

16 

D4.  V 

17 

A4.  IV 

18 

D4.  V 

19 

D4.  V 

20 

D4.  V 
21 

D4.  V 
22 

D4.  V 

23 

D2.  V 

24 

A4.  IV 

25 

D3.  V 

26 

C2.  IV 

27 

C2.  IV 

28 

A3.  Ill 


BASALT — Continued. 


Si02 

Al2<  >3 

Fe2G3 

FeO 

MgO 

CaO 

Na20 

k2o 

H,0+ 

T1 

HH 

o 

_ 1 _ 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

J  47. 95 

23.  75 

12.  72 

n.  d. 

1.90 

7.86 

1.82 

0.  35 

1.91 

98.  26 

J  53.  03 

20.09 

9.  43 

n.  d. 

2.63 

6.  05 

4.52 

1.27 

2.  64 

99.  66 

1  45.24 

17.08 

1.84 

8.  02 

5.  74 

4.64 

5.32 

0. 13 

5.  66 

2.  98 

2.  40 

0.  57 

0. 14 

99.  76 

2.  62 

j  51.10 

22.  05 

1.21 

5.89 

2.  35 

11.42 

2.  22 

1.02 

0.  71 

1.82 

0.18 

99.  97 

1 

J  l  45.  95 

r 

7.  23 

n.  d. 

25.  02 

1.  71 

5.17 

5.  91 

1.51 

6. 14 

0.  39 

. 

1.08 

0.  38 

100.  49 

j  43.  23 

21.  37 

1.69 

9.53 

3.  57 

6.  66 

5.63 

trace 

4. 49 

2.  61 

0.  97 

trace 

100. 08 

2.  82 

|  42.  21 

9.  47 

n.  d. 

23.  40 

2. 16 

6.  20 

5.  30 

1.76 

7.18 

0.  35 

1.57 

0.  51 

100. 11 

|  52.  59 

17.  33 

11. 14 

n.  d. 

2.  62 

6.  47 

4.24 

2.  40 

3.  27 

0.  66 

100.  72 

|  49.  00 

21.70 

13.  30 

n.  d. 

5.  22 

8.  95 

0.  63 

1.95 

n.  d. 

100.  75 

j  47.  23 

24.  25 

11.33 

n.  d. 

4.  85 

8.  47 

1.81 

1.64 

n.  d. 

99.  58 

|  44.  50 

21.50 

14.  90 

n.  d. 

7.  60 

8.  96 

1.36 

2.  47 

n.  d 

101.26 

|  44.  27 

29. 

82 

n.  d. 

5.  83 

11.69 

3.29 

1.94 

2.51 

99.  35 

2.  864 

J  48.0 

23.0 

16.5 

n.  d. 

0.8 

5.0 

1.0 

n.  d. 

3.2 

1.5 

99.0 

j  47.  54 

17.  70 

5. 19 

6.  20 

5.94 

9. 12 

4.  01 

1.43 

0.  72 

0. 10 

trace 

0.  62 

98.64 

2.  79 

J  52.  60 

14.17 

11.38 

n.  d. 

6.37 

9.17 

2.  90 

1.06 

2.  08 

0.  57 

100.  30 

J  48.  93 

22.  63 

8.84 

1.97 

3.  54 

7.  27 

4.  32 

2.  04 

0.36 

trace 

trace 

0.  50 

100.  40 

J  53.  83 

15.  85 

6.87 

4.09 

5.  56 

7.  68 

3.  02 

0.  72 

0.84 

0.  32 

1.73 

0.  26 

0.  21 

101.  64 

2.  911 

|  49.  05 

14.36 

4.25 

6.  35 

8.38 

8.  38 

3.42 

2.  26 

1.57 

0.  40 

2.18 

0.  09 

0.  24 

101.87 

2.  945 

J  46.  14 

13.10 

10.56 

n.  d. 

12.55 

9.  97 

2.61 

2.02 

1.02 

trace 

1.07 

1.46 

trace 

100.  50 

INFERIOR  ANALYSES. 


449 


BASALT— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Laugervatus,  Iceland. 

R.  Breon. 

R.  Breon, 

Geol.  d’Islande, 

Paris,  1884,  p.  37. 

Basalt  glass. 

Sum  low. 

A1,03  high. 

Ardtun,  Mull,  Scotland. 

G.  A.  J.  Cole. 

G.  A.  J.  Cole, 

Q.  J.  G.  S., 

XLIV,  p.  303,  1888. 

Tachylvte. 

Al,Os  high. 

Victoria  Park, 

Glasgow,  Scotland. 

P.  Holland. 

F.  Rutley, 

Q.  J-  G.  S., 

XLY,  p.  631,  1889. 

Tachvlyte. 

1  inch  dike. 

Not  fresh. 

Eycott  Hill,  Lake  Dis¬ 
trict,  England. 

J.  Hughes. 

Ward, 

Micros.  Jour.,  1887, 
p.  246  f. 

Lava. 

Cited  in  J.  J.  H 
Teall,  Br. 
Petr.  1888, 

p.  228. 

Not  fresh. 

Dinas  Head,  Cornwall. 

J.  J.  Beringer. 

H.  Fox, 

Tr.  R.  Soc.  Cornw., 

XII,  p.  71,  1896. 

Dolerite. 

Not  fresh. 

AI,03  low. 

FeO  high. 

FeSo 

0.33 

Pentire  Point, 

Cornwall. 

Phillips. 

' 

J.  J.  H.  Teall, 

Brit.  Petrog., 

London,  1888,  p.  231. 

Lava. 

A1203  high. 

Not  fresh. 

Round  Hole  Point, 
Cornwall. 

J.  J.  Beringer. 

II.  Fox, 

Tr.  R.  Soc.  Cornw., 

XII,  p.  71,  1896. 

Dolerite. 

Not  fresh. 

A1203  low. 

FeO  high. 

The  Beal,  Portree, 
Ireland. 

Hodgkinson. 

■ 

Judd  and  Cole, 

Q.  J.  G.  S., 

XXXIX,  p.  455,  1883. 

Basalt  glass. 

Banne  d’Ordenche, 
Mount  Dore, 
Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C  R 

CXXVIII,  p.  1097,  1899. 

Basalt. 

A1203  high. 

Puy  Loup,  Mount  Dore, 
Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

0  R 

CXXVIII,  p.  1097,  1899. 

Basalt. 

A1203  high. 

Banne  d’Ordenche, 
Mount  Dore, 

Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C.  R., 

CXXVIII,  p.  1097,  1899. 

Basalt. 

AL03  high. 

La  Croix-Morand, 

Mount  Dore, 

Auvergne. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  479,  1887. 

Dolerite. 

Alboran  Island,  Spain. 

S.  Traverso. 

S.  Traverso, 

Gior.  Min., 

V,  p.  203,  1894. 

Labradorite. 

so3 

Cl 

trace 

0.07 

,  Senoreta,  Columbretes 
Islands,  Spain. 

R.  Pfohl. 

F.  Becke, 

T.  M.  P.  M., 

XVI,  p.  310,  1896. 

Basalt. 

Reichshofen,  Vogesen. 

G.  Linck. 

G.  Linck, 

Mt.  Com.  G.  L-U.  Els., 

I,  p.  52,  1888. 

Basalt. 

Kirmessplatz,  Siebenge- 
birge,  Rh.  Prussia. 

E.  Kaiser? 

E.  Kaiser, 

Vh.  Nh.  Ver.  Bonn, 

LIV,  p.  186,  1897. 

Basalt. 

A1203  high. 
Dried  at  125°. 

x 

so3 

Cl 

0.61 

trace 

0.05 

Buhl,  n.  Cassel,  Nassau. 

O.  Fromm. 

O.  Fromm, 

Z.  D.  G.  G., 

XLIII,  p.  72,  1891. 

Basalt. 

X 

so3 

Cl 

0.  79 

0. 07 

0.08 

Kl.  Staufenberg,  n. 
Cassel,  Nassau. 

O.  Fromm. 

O.  Fromm, 

Z.  D.  G.  G., 

XLIII,  p.  74,  1891. 

Basalt. 

Cr..03 

BaO 

trace 

trace 

1 

Stempel,  n.  Marburg, 
Nassau. 

F.  W.  Kuester. 

M.  Bauer, 

N.  J., 

1891,  II,  p.  159. 

Basalt. 

14128— No.  14—03 - 29 


450 


CHEMICAL  ANALYSE!?  OF  IGNEOUS  ROCKS 


BASALT — Continued. 


No. 

SiO, 

Al-A 

FeA 

FeO 

MgO 

CaO 

Na,0 

K.,0 

LLO-F 

h2o- 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

29 

1  53.  78 

14.  22 

9.  66 

n.  d. 

7.12 

7.  44 

3. 11 

0.  89 

1.73 

2.  22 

100. 46 

A4.  IV 

1 

30 

i  52.  87 

• 

16.  36 

10.  87 

n.  d. 

5.  23 

7.  94 

3.  64 

0.  96 

1.  22 

99.  09 

2.  793 

C4.  V 

1 

31 

1  52.  21 

14.  62 

10.  77 

3.  20 

5.  02 

8.  72 

1.77 

0.  55 

0.  09 

0.19 

1.  36 

0.  52 

99.  02 

C2.  IV 

I 

32 

1  49.  06 

13.  66 

7.  55 

4.  00 

8.  45 

8.90 

4.  03 

1.00 

1.30 

2.  93 

0.31 

101. 19 

C2.  IV 

33 

D2.  V 

I 

J  47.  39 

11.54 

12. 47 

7. 13 

6.  24 

8.  83 

3.  80 

0.  73 

2.  79 

0. 18 

0.97 

102.07 

(102.08) 

34 

1  44.  64 

16. 14 

19.  35 

2.  52 

0.  96 

10.  78 

1.65 

2.  24 

0.  27 

0. 13 

0.  78 

0.  61 

100.  23 

2.  794 

D2.  V 

I 

35 

| 

* 

l  43.  65 

33 

23 

n.  d. 

2.  03 

8.  70 

5.  43 

6.  48 

0.  61 

100. 13 

D4.  V 

36 

Cl.  IV 

1 

i 

j-  41.71 

15.  80 

5.  59 

7.64 

4.  85 

10.  30 

6.  08 

1.00 

2.  22 

2.  01 

2.  77 

trace 

0. 16 

101. 45 

2.  900 
21° 

37 

■  40.  52 

18.  97 

10.  77 

2.  99 

6.  72 

11.34 

3.  40 

0.  42 

2.  40 

0.  81 

0.26 

0.  74 

100. 11 

2.  958 

C2.  IV 

38 

•  40.  02 

19.  88 

11.68 

1.61 

4.  03 

12.  52 

2.  93 

0.  57 

3.  49 

1.31 

0.  24 

0.  82 

99.  80 

2.  884 

C2.  IV 

39 

47.  55 

14.82 

n.  d. 

11.63 

5.90 

9.16 

3.  87 

4.  39 

2.  68 

100.  00 

C4.  V 

r 

40 

•  47. 14 

15.  67 

n.  d. 

11.17 

3.  60 

11.85 

2.  90 

2.  20 

4.00 

100.  00 

C4.  V 

- 

41 

•  46.57 

16. 10 

n.  d. 

12.  02 

4. 14 

.13.  67 

2. 14 

0.  84 

3.-80 

99.  28 

C4.  V 

42 

•  44.  49 

13.  35 

n.  d. 

13.  75 

5.  59 

12.  90 

1.39 

2.  00 

3.25 

2.  48 

0. 45 

100.  01 

A4.  IV 

43 

46.  93 

24.19 

5.  89 

4.  42 

2.42 

8.  54 

2.  47 

4.56 

0.  88 

0.  61 

100.  91 

D3.  V 

44 

1  44.60 

21.  29 

10.51 

0.  57 

3.51 

11.  35 

4.  81 

0.  74 

2.65 

100.  03 

C3.  V 

1 

45 

■  49.  70 

9. 40 

13.  70 

2.80 

9.  47 

10.  25 

2.  85 

0. 18 

1.  65 

0.  34 

100.  34 

C3.  V 

46 

49.  65 

9.  38 

15.  72 

0.85 

9.  40 

10.  25 

2.  78 

0.18 

1.50 

0.  32 

100.  03 

C3.  V 

J 

INFERIOR  ANALYSES. 


451 


BASALT— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Schiffenberg,  Giessen, 
Hesse. 

A.  Streng. 

A.  Streng, 

Ber.  Oberhes.  Ges  , 

XXIX,  p.  99,  1893. 

Anamesite. 

Schwartzenfels, 
Rhongebirge,  Rh. 
Prussia. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  479,  1887. 

• 

Basalt  glass. 

Frauenberg,  n.  Breit- 
first,  Hesse. 

R.  Wedel. 

R.  Wedel, 

Jb.  Pr.  G.  L-A., 

XI,  p.  21*,  1892. 

Basalt. 

Londorf,  Vogelsberg, 
Hesse. 

A.  Streng. 

A.  Streng, 

N.  J., 

1888,  II,  p.  211. 

Dolerite. 

Not  fresh. 

Dried  at  100°. 

Michelnau,  Vogelsberg, 
Hesse. 

J.  M.  Ledroit. 

J.  M.  Ledroit, 

Ber.  Oberhes.  Ges., 

XXIV,  p.  151,  1886. 

Basalt. 

so3 

Cl 

0. 16 
trace 

Dolmesberg,  Hesse. 

F.  W.  Schmidt. 

C.  Chelius, 

Erl.  G.  Kte.,  Hesse,  Bl.  Messel, 
p.  33,  1886. 

Basalt. 

Fe.,03  high. 

MgO  low. 

Bobenhausen,  Vogels- 
berg,  Hesse. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  493,  1887. 

Tachylyte. 

X 

so3 

Cl 

Li20 

0. 74 

0.12 

0.46 

trace 

Dachberg,  Rhongebirge. 

P.  Jannasch. 

F.  Rinne, 

Jb.  Pr.  G.  L-A., 

VII,  p.  9,  1887. 

Basalt. 

Not  fresh. 

so3 

Cl 

0.62 

0.15 

Kleinostheim,  Hesse. 

Not  stated. 

. 

G.  Klemm, 

Erl.  G.  Kte.  Hesse. 

Bl.  Schafheim, 
p.  33,  1894. 

Basalt. 

A1203  high? 

Iron  oxides. 
S03  for  S? 

so3 

Cl 

0. 61 

0.09 

Otzberg,  Hesse. 

Not  stated. 

G.  Klemm, 

Erl.  G.  Kte.  Hesse, 

Bl.  Schafheim, 
p.  33,  1894. 

Basalt. 

A1203  high? 

Iron  oxides. 
S03  for  S? 

Schelingen,  Kaiserstuhl, 
Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 
p.  277. 

Basalt. 

Calc,  to  100  after 
deducting  2. 19 
H20  and  5.00 
CaC03. 

Sponeck,  Kaiserstuhl, 
Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 
p.  277. 

Basalt. 

Not  fresh. 

Calc,  to  100  af¬ 
ter  deducting 
4.25  H20. 

• 

Sponeck,  Kaiserstuhl, 
Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 
p.  278. 

Anamesite. 

Not  fresh. 

3.27  II20.  Ig¬ 
nited  before 
analysis. 

Schonberg,  Kaiserstuhl, 
Baden. 

■ 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl, 

Leipzig,  1892, 
p.  308. 

(Basalt?) 

Tuff. 

Rongstock,  Bohemia. 

Student  of  P. 
Jannasch. 

II.  O.  Lang, 

T.  M.  P.  M., 

XV,  191,  1890. 

Dolerite. 

( Essexite. ) 

ALO.  high. 

MgO  low. 
cf.  No.  13  es- 
sexose. 

Burberg,  Duppauer 
Mountains,  Bohemia. 

J.  M.  Clements. 

J.  M.  Clements, 

Jb.  Wien.  G.  R-A., 

XL,  p.  345,  1890. 

Basalt. 

A1203  high? 
Fe203  high. 
FeO  low. 

Brentonico,  Rovereto, 
Tyrol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident, 

XIX,  p.  406,  1894-5. 

Basalt. 

Not  fresh. 
H20=7.56. 
Ignited  before 
analysis. 

Botte,  Rovereto,  Tyrol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident, 

.XIX,  p.  406,  1894-5. 

Basalt  tuff. 

Not  fresh. 
Ignit=6.17. 
Ignited  before 
analysis. 

452 


CHEMICAL  ANALYSES  OF  IGNEOUS  KOCKS. 


BASALT — Continued. 


No. 

SiO, 

A1A 

FeA 

FeO 

MgO 

CaO 

Na,0 

K,0 

h2o+ 

h2<5- 

C02 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

47 

l  49.  42 

13.01 

13.34 

0.  96 

6.  30 

10.  84 

3.  48 

1.05 

0.04 

1.25 

0.  21 

99.  90 

2.  34 

C3.  V 

f 

20° 

48 

1  48.  52 

1 2.  90 

14. 19 

2.  82 

8.  23 

7.  54 

3. 19 

none 

1.71 

0.21 

99.31 

2.  30 

C3.  V 

I 

20° 

49 

l  48.  52 

12.  80 

15.39 

1.52 

8.  33 

7.  84 

3.  29 

none 

1.29 

0.  21 

99. 19 

2. 12 

D3.  V 

1 

20° 

50 

43.  70 

23.  44 

3.14 

5.  27 

3.  54 

13.  05 

4.  86 

n.  d. 

2.  40 

2.  92 

102.32 

D4.  V 

1 

51 

1  49. 10 

13.64 

17.21 

n.  d. 

5.30 

8.  20 

4.10 

1.  32 

0.  70 

trace 

1.60 

101. 17 

2.  96 

C4.  V 

1 

16° 

52 

i  46.  60 

12.  50 

16.  92 

n.  d. 

6.29 

9.  74 

3.  39 

1. 15 

1.65 

1.05 

99.  29 

B4.  V 

1 

53 

1  44.2 

20.9 

12.2 

n.  d. 

2.5 

6.6 

6. 1 

4.  6 

n.d. 

97. 1 

D4.  V 

J 

54 

I  50.34 

16.  72 

15. 12 

n.  d. 

3.  96 

8.00 

3.  78 

1.83 

0.  72 

100.  47 

A4.  IV 

1 

55 

l  55.  82 

31  .'29 

n.  d. 

0.  44 

3.91 

4.60 

4.  26 

0.  58 

100.  90 

D4.  V 

J 

56 

1  51.00 

15.  80 

10.  96 

n.  d. 

4.  70 

11. 17 

2.  54 

1.15 

0.  30 

0.  13 

0.  93 

0.56 

99.  24 

C4.  V 

1 

57 

1  50.  55 

16.  58 

8. 18 

n.  d. 

6. 10 

11.45 

3. 15 

3.  16 

0.  06 

0.  67 

99.  90 

A4.  IV 

1 

-* 

58 

1  50. 15 

12.  08 

9.  07 

6.  53 

3.  88 

10.  52 

3.  08 

2.  77 

0.  24 

0.  67 

0.  82 

100.51 

A2.  II 

J 

59 

\  51.31 

12.  54 

4.  87 

7.42 

2.90 

10.01 

3.  23 

1.  36 

5.63 

0.  32 

0.  52 

trace 

100. 17 

2.656 

A2.  II 

1 

17° 

60 

i  35.  48 

8.30 

12.  30 

14.60 

7.10 

1.04 

3.92 

trace 

16.  '80 

none 

99.  54 

A3.  Ill 

1 

61 

1  53.42 

15.  08 

17. 13 

n.  d. 

2.24 

8.  72 

3.  25 

trace 

2.34 

0.  85 

trace 

100.  69 

A 4.  IV 

1 

62 

i  49.  95 

14.  77 

7.41 

3. 53 

4.  28 

10.  26 

2.  87 

2.  63 

3.  40 

trace 

99. 10 

1 

B3.  IV 

J 

63 

1  48.  25 

19.  23 

10.  87 

n.  d. 

5. 17 

7.91 

3.  86 

1.67 

3. 16 

100. 12 

B4.  V 

1 

64 

|  47.00 

16.  60 

11.00 

n.  d. 

9.  80 

11.38 

3.  00 

0.  46 

1.89 

101.13 

€4.  V 

J 

65 

]  46.20 

13.  40 

4.00 

8.56 

10.92 

12.24 

2  82 

0.  48 

0.18 

2. 18 

0.  53 

0.  28 

101. 79 

D2.  V 

J 

INFERIOR  ANALYSES. 


453 


BASALT — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Sano,  Rovereto,  Tvrol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident., 

XIX,  p.  408,  1894-5. 

Basalt  (altered). 

Not  fresh. 
Ignit=6.24. 
Ignited  before 
analysis. 

Foianeghe,  Rovereto, 
Tyrol. 

1\  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident., 

XIX,  p.  408,  1894-5. 

Basalt  tuff. 

Not  fresh. 
Ignit=6.75. 
Ignited  before 
analysis. 

Nomesino,  Rovereto, 
Tyrol. 

P.  Giacomelli. 

P.  Giacomelli, 

Soc.  Alp.  Trident., 

XIX,  p.  410,  1894-5. 

Basalt. 

Not  fresh. 
Ignit=7.74. 
Ignited  before 
analysis. 

Fee  Gletscher  Alp, 
Pennine  Alps, 
Switzerland. 

A.  A.  Longsden. 

T.  G.  Bonney, 

Q.  J.  G.  S., 

XLIX,  p.  97,  1893. 

Basalt  altered. 

Not  fresh. 

A1A  high. 

MgO  low. 

Calc,  from  sol,, 
and  insol. 

Mosc’  al  Bo,  Euganean 
Hills,  Italy. 

Not  stated. 

G.  dal  Piaz, 

Riv.  Min.  Crist, 

XVI,  p.  65,  1896. 

Basalt. 

Castelnuovo,  Euganean 
Hills,  Italy. 

Not  stated. 

G.  dal  Piaz, 

Riv.  Min.  Crist, 

XVI,  p.  69,  1896. 

Basalt. 

Scajara,  n.  Battaglia, 
Euganean  Hills. 

S.  Bertolio. 

S.  Bertolio, 

B.  Soc.  G.,  Fr. 

(3),  XXI,  p.  433,  1894. 

Basalt. 

Gala  Rossa, 

Island  of  Capraia, 
Italy. 

A.  Rbhrig. 

H.  Emmons, 

Q.  J.  G.  S., 

XLIX,  p.  143,  1893. 

Basalt. 

Scoria. 

Eruption  of  1888-9, 
Volcano,  Lipari 
Islands. 

O.  Silvestri. 

G.  Mercall', 

Gior.  Min., 

Ill,  p.  108,  1892. 

Dolerite. 

Bomb. 

Notaro,  Filicudi, 

.Eolian  Islands. 

F.  Glaser. 

A.  Bergeat, 

Abh.  Munch.  Akad., 

XX,  p.  207,  1899. 

Basalt. 

Sciarra,  Stromboli, 
AEolian  Islands. 

F.  Glaser. 

A.  ergeat, 

N.  J.,  1897, 

II,  p.  113. 

Basalt. 

S03  0. 64 

Cl  0. 06 

Eruption  of  1891, 
Stromboli,  Lipari 
Islands. 

L.  Ricciardi. 

Ricco  and  Mercalli, 
cf.  N.  J.,  1893, 

I,  p  492 

Basalt  ashes. 

CruO.-j  0. 06 

Eruption  Nov.  16,  1884, 
Mt.  Etna,  Sicily. 

L.  Ricciardi. 

L.  Ricciardi, 

Att.  Acad.  Gioen., 

XVIII,  p.  (4),  1884. 

Basalt  ashes. 

Franz  Joseph  Land, 
Arctic  Ocean. 

J.  J.  H.  Teall. 

J  J.  H.  Teall, 

Geol.  Mag., 

XXXIV,  p.  554,  1897. 

Palagonite. 

Rovno,  Wolhynia, 
Russia. 

Blumel. 

St.  Pfaffius, 
cf.  N.  J.,  1888, 

II,  p.  78. 

Basalt. 

Contains 
metallic  iron. 

Jalguba,  Olonez, 

Russia. 

L.  Lessing. 

L.  Lessing, 

T.  M.  P.  M., 

VI,  p.  294,  1885. 

Variolite. 

Cap  Marsa, 

Menerville,  Algeria. 

Not  stated. 

Duparc,  Pearce  and  Ritter, 

Mem.  Soc.  Ph.  Gen., 

XXXIII,  No.  2,  p.  94, 1900. 

Basalt. 

A1A  high. 

Kimberley,  Griqualand, 
South  Africa. 

Not  stated. 

L.  de  Launay, 

C.  R., 

CXXV,  p!  336,  1897. 

Basalt. 

Punta  Delgada, 

C.  v.  John. 

C.  v.  John, 

Anamesite. 

San  Miguel,  Azores.  Jb.  Wien.  G.  R-A., 

XLYI,  p.  289,  1896. 


454 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


No. 

66 

D3.  V 

67 

C2.  IV 

68 

B4.  V 

69 

D3.  V 

70 

D3.  V 

71 

D3.  V 

72 

D4.  V 

73 

D4.  V 

74 

B3.  V 

75 

B3.  IV 

76 

C2.  IV 

77 

Cl.  Ill 

78 

Cl.  Ill 

79 

Cl.  Ill 

80 

Cl.  Ill 

81 

Cl.  HI 
82 

C2.  IV 


BASALT — Continued. 


Si02 

ai2o8 

FeA 

FeO 

MgO 

CaO 

Na,0 

K20 

h2o+  h2o— 

CO, 

Ti02 

48.  09 

19.  05 

3.44 

5.59 

3.  50 

9.  42 

5.  06 

2.  88 

0.  67  1 

4.  38  | 

, 

53.  75 

11.20 

12.  26 

0.  69 

9.11 

5.  72 

0.  76 

0.87 

4.91 

0.36 

50.  53 

18.  36 

11.76 

n.  d. 

4.  40 

9.33 

2.07 

3.  23 

1.35 

48.24 

20.64 

4.  63 

5.  55 

5.02 

7.94 

5.  08 

1.88 

0.  02 

47.  74 

20.  95 

3.  29 

6.  32 

5.16 

7.  56 

7.12 

1.21 

0.  04 

47.  50 

19.32 

4.  75 

5.  20 

4.  36 

8.37 

7.63 

2.31 

0.  46 

50.  00 

22.  80 

14. 15 

4.05 

1.93 

3.17 

1.99 

0.  33 

0.  42 

48.  60 

25.  45 

17.  55 

1.20 

0.  98 

2.  20 

1.38 

1.87 

trace 

45.  30 

14.90 

10.  87 

8.20 

3.  78 

6.58 

5.  23 

1.77 

1.20 

trace 

51.77 

15.  66 

8.  46 

6.  54 

4.  95 

9.56 

2.17 

0.  96 

n.  d. 

47.44 

16.  51 

15.  33 

3. 19 

8.  80 

6.  02 

1.60 

0.30 

47.  33 

17.96 

12.64 

0.  51 

3.  97 

6.  29 

3.  67 

1.  10 

4.84 

40. 11 

12.  40 

14.64 

trace 

11.  65 

12.  24 

2.  72 

0.  96 

4. 15 

37.82 

13.16 

14.11 

0. 14 

11.  75 

13.  39 

1.  66 

1.49 

5.  56 

36.  85 

11.97 

13.  90 

6.  54 

10.  73 

9.  00 

4. 13 

0.  79 

4.05 

35.  86 

12. 10 

7.82 

8.  09 

9.  72 

12.  08 

6.  23 

1.93 

2.  90 

34.81 

33. 18 

23.03 

2.34 

0.39 

trace 

trace 

trace 

4.  89 

PA 


0.97 


0. 13 

0.  21 


trace 


trace 


0.25 


0.  61 


1 . 05 


0.57 


0.  82 


1.25 


1.08 


0.39 


MnO 

Sum 

Sp.gr.' 

102.  08 

0.16 

100. 19 

2.  867 

101.  03 

99.  97 

2.  733 

99.  52 

2.  736 

100.11 

2.  704 

0.  97 

99.  81 

2.  77 

trace 

99.  23 

2.  80 

0.91 

98.  99 

2.  79 

0.  82 

100.  89 

0.37 

100.  48 

0.64 

100.  29 

0.  25 

99.  97 

0.24 

100.  41 

1. 13 

100.  62 

0.39 

100.  12 

0.  28 

99.  99 

INFERIOR  ANALYSES. 


455 


BASALT— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Inaccessible  Island. 
Tristan  d’Acunha, 
Atlantic  Ocean. 

C.  K  lenient. 

A.  Renard, 

Challenger  Rep., 

Petr.  Oc.  Islds., 

1889,  p.  88. 

Taehvlyte. 

Jenissei  River,  Siberia. 

J.  P.  Tolmat- 
schow. 

J.  P.  Tolmatschow, 
cf.  N.  J.,  1900, 

I,  p.  388. 

Variolite. 

Buhemin,  Elburz 
Mountains,  Persia. 

E.  Drasche. 

E.  Drasche, 

Vh.  Wien.  G.  R-A., 

XVIII,  p.  196,  1884. 

Basalt. 

Well  Digging,  Ivula, 

Asia  Minor. 

A.  Rohrig. 

1 

H.  S.  Washington, 

A.  J.  S.,  XLVII,  p.  122,  1894. 
Also  In.  Diss.,  Leipzig,  1894. 

Kulaite. 

Alkalies  incor¬ 
rect.  Cf.  No. 
15  essexose. 

Hermos  River,  Kula, 
Asia  Minor. 

A.  Rohrig. 

H.  S.  Washington, 

A.  J.  S.,  XLVII,  p.  122,  1894. 
Also  In.  Diss.,  Leipzig,  1894. 

Leucite-kulaite. 

Alkalies  incor¬ 
rect.  Cf.  No. 
14  essexose. 

Kula  Devit,  Kula, 

Asia  Minor. 

A.  Rohrig. 

H.  S.  Washington, 

A.  J.  S.,  XLVII,  p.  122,  1894. 
Also  In.  Diss.,  Leipzig,  1894. 

Kulaite. 

Alkalies  incor¬ 
rect. 

Kilauea,  Hawaii, 
Hawaiian  Islands. 

O.  Silvestri. 

O.  Silvestri, 

B.  Com.  G.  Ital., 

XIX,  p.  171,  1888. 

Basaltoid. 

AL03  high. 

Kilauea,  Hawaii, 
Hawaiian  Islands. 

O.  Silvestri. 

O.  Silvestri, 

B.  Com.  G.  Ital., 

XIX,  p.  169,  1888. 

Basaltoid. 

A1A  high. 

Kilauea,  Hawaii, 
Hawaiian  Islands. 

O.  Silvestri. 

O.  Silvestri, 

B.  Com.  G.  Ital., 

XIX,  p.  180,  1888. 

Basaltoid. 

Kilauea,  Hawaii, 
Hawaiian  Islands. 

A.  H.  Phillips. 

A.  H.  Phillips, 

A  J  S 

XLVII,’  p.  473,  1894. 

Basalt. 

Stalagmite. 

SO., 

CuO 

0.06 

0.08 

Salt  Lake,  Oahu, 
Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  427,  1896. 

Basalt  tuff. 

Not  fresh. 

H.20+ =5.  04. 
H20 — =9.  08. 
Ignited  before 
analysis. 

so3 

s 

CuO 

0. 07 

0.07 

0.15 

Mount  Ivohala, 

Waimea,  Hawaiian 
Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  424,  1896. 

Basalt. 

Not  fresh. 
H20+=3.  08. 
H20— =2.38. 
Ignited  before 
■analysis. 

so3  • 

CuO 

0. 17 

0.11 

Diamond  Head,  Oahu, 
Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  427,  1896. 

Basalt  tuff. 

Not  fresh. 
H.,0-|-=6. 48. 
H20— =5.  46. 
Ignited  before 
analysis. 

so3 

FeSo 

CuO” 

0. 15 

0.05 

0.07 

Punch  Bowl,  Oahu, 
Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  427,  1896. 

Basalt  tuff. 

Not  fresh. 
H20+=8.24. 
H20 — =9.98. 
Ignited  befor* 
analysis. 

so3 

s 

CoO 

CuO 

trace 

0. 14 

0.04 

0.10 

Panahou,  Oahu, 
Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  424,  1896. 

Basalt,  scoria. 

Not  fresh. 
H20+=4.74. 
H20 — =5.48. 
Ignited  befort 
analysis. 

so. 

FeS. 

CuO' 

0.27 

1.40 

0.25 

Panahou,  Oahu, 
Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  424,  1896. 

Basalt,  lapilli. 

Not  fresh. 

H20  not  given. 
Ignited  before 
analysis. 

S03 

CuO 

0. 31 

0. 37 

Honolulu,  Oahu, 
Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons. 

A.  ,T.  S., 

II,  p.  427,  1896. 

Basalt. 

Not  fresh. 
H„0+=11.63. 
H20  — =6.43. 
Ignited  before 
analysis. 

456 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS 


BASALT — Continued. 


No. 

Si02 

A1A 

Fe.,0, 

FeO 

MgO 

CaO 

Na20 

K20 

HsO-f 

H20— 

o 

o 

tc  , 

Ti02 

p2o5 

MnO 

Sum 

Sp.  gr. 

83 

1  24.62 

23.  89 

37.  85 

2.  08 

0.  99 

trace 

1.41 

trace 

8. 12 

0.  24 

0.  25 

100. 12 

C2.  IV 

1 

84 

4.54 

41.  35 

40.  87 

2.52 

0.37 

trace 

trace 

trace 

8.  99 

0.  63 

0.  08 

100. 16 

C2.  IV 

1 

85 

1  46.  76 

17.  71 

1.  73 

10.  92 

10.  37 

11.56 

1.83 

0. 17 

n.d. 

0.44 

101. 49 

D3.  V 

J 

86 

1  44. 73 

16.  28 

14.  57 

n.  d. 

2.  23 

1.88 

4.  50 

4.  02 

9.  56 

2.  89 

100.  64 

C4.  V 

J 

87 

45. 13 

18. 13 

12.  94 

n.  d. 

7.  33 

11.23 

2.14 

0.  98 

2. 18 

100.  06 

A4.  IV 

1 

NEPH ELITE-PLAGIOCLASE  ROCKS. 


1 

48.  90 

14.70 

4. 14 

3.  68 

3.  95 

8.26 

5.  22 

0.  56 

2.44 

0.  52 

5.42 

0.  95 

0.  79 

0.  03 

100. 04 

At.  I 

1 

2 

1  46.45 

15.49 

4.  86 

6.  83 

3. 47 

9.38 

3.  23 

0.  57 

3.  80 

4.  90 

0.  85 

99.  83 

A3.  Ill 

3 

1 

43.  40 

13.  60 

6.  66 

6.  83 

8.15 

9.  05 

1.  66 

0.64 

3.  20 

7. 10 

0.  26 

100.  55 

A3.  Ill 

I 

4 

1  42. 15 

18.  75 

4.  94 

7.30 

3.  74 

9.  75 

3.34 

2.  07 

4.  35 

3.10 

0.  58 

100. 07 

A3.  Ill 

1 

5 

1  39. 20 

15.  52 

8.  80 

5.  08 

6.  49 

14.  45 

2.04 

1.11 

3.  70 

2.  80 

1. 18 

100. 37 

A3.  Ill 

1 

6 

|  38.85 

15.  65 

10.  43 

8.  88 

1.49 

11.35 

1.96 

0.  62 

4.50 

6.  25 

0.  62 

100.  60 

A3.  Ill 

7 

1  42.  08 

20.  03 

7.  61 

n.  d. 

3.52 

10.  62 

(4- 

50) 

4.  54 

5.  51 

1.59 

100. 00 

D4.  V 

J 

8 

1 

\  38.  35 

9.18 

20.  32 

n.d. 

13.  78 

11.  76 

2.  77 

2.  02 

1.20 

99.  38 

3.  22 

B4.  V 

J 

9 

1  48.61 

20.  74 

4.29 

0.  22 

2. 11 

0.  25 

0. 16 

0.77 

7.  07 

12. 10 

3.  57 

0.  29 

none 

100. 81 

Al.I 

J 

10 

1  35.  03 

9.  80 

5. 55 

4.  98 

9.  78 

15.  09 

2.04 

2. 16 

2.05 

0.  41 

7.83 

2.  20 

1.99 

0.  06 

99.  66 

2.  99 

Al.I 

1 

• 

23° 

11 

1  48.05 

18.  65 

2.  90 

4.  70 

2.28 

7.  50 

6. 19 

5. 16 

n.  d. 

n.  d. 

2.  60 

0.  28 

98.  31 

2.  665 

D3.  V 

] 

12 

42.  20 

10.  32 

n.  d. 

11.  85 

14.  82 

12.  96 

3.44 

0.64 

2.  92 

100.  00 

C4.  V 

1 

1 

INFERIOR  ANALYSES. 


457 


BASALT— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so.,  0. 40 

CuO  0. 27 

Hilo,  Hawaii, 

Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  427,  1896. 

Basalt. 

Not  fresh. 
H2O+=12.70. 
H,jO— =8.49. 
Ignited  before 
analysis. 

SO.,  0. 55 

CuO  0. 26 

1 

Kaneohe,  Oahu, 
Hawaiian  Islands. 

A.  B.  Lyons. 

A.  B.  Lyons, 

A.  J.  S., 

II,  p.  427,  1896. 

Basalt. 

W  eathered. 
H20+ =20.48. 
H20— =3.55. 
Ignited  before 
analysis. 

Lat.  13°  28'  S  (sic) , 
Long.  149°  30'  W., 

S.  Pacific  Ocean. 

A.  F.  Renard. 

Murray  and  Renard, 
cf.  N.  J.,  1893. 

II,  p.  308. 

Basalt  glass. 

Latitude? 

Lat.  18°  28'  S  (sic), 
Long.  149°  30'  W., 

S.  Pacific  Ocean. 

A.  F.  Renard. 

Murray  and  Renard, 
cf.  N.  J.,  1893. 

II,  p.  308. 

Palagonite. 

Latitude? 

Cape  Adare,  Antartic 
Continent. 

J.  A.  Schofield. 

David,  Snieeth  and  Schofield, 

J.  R.  Soc.  N.  S.  W., 

XXIX,  p.  477,  1895. 

Basalt. 

NEPH ELITE-PLAGIOCL ASE  ROCKS. 


1 

so* 

BaO 

SrO 

Li. 

0.04 

0.  31 

0.13 

trace 

Shield’s  River,  Crazy 
Mountains,  Montana. 

H.  N.  Stokes. 

W.  H.  Weed, 

B.  U.  S.  G.  S.,  148, 
p.  146,  1897. 

Theralite. 

Not  fresh. 

Hotzendorf,  Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien,  G.  R-A., 

XXX,  p.  72,  1896. 

1 

Teschenite. 

Not  fresh. 

Lohtka,  Frankstadt, 
Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien,  G.  R-A., 

XXX,  p.  73,  1896. 

Teschenite. 

Not  fresh. 

Blauendorf,  Neutitsch- 
ein,  Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien,  G.  R-A., 

XXX,  p.  71,  1896. 

Teschenite. 

Not  fresh. 

Jasenitz,  Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien,  G.  R-A., 

XXX,  p.  74,  1896. 

Teschenite. 

Not  fresh. 

Neutitschein,  Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien,  G.  R-A., 

XXX,  p.  72,  1896. 

Teschenite. 

Not  fresh. 

Sohla,  Silesia. 

C.  E.  M.  Rohr- 
bach. 

C.  E.  M.  Rohrbach, 

T.  M.  P.  M., 

VII,  p.  49,  1886. 

Teschenite. 

Not  fresh. 

A1A,  high, 

Alkalies  by  dif¬ 
ference. 

Pilot  Knob,  Austin, 
Texas. 

J.  F.  Kemp. 

J.  F.  Kemp, 

Am.  G., 

VI,  p.  293,  1890. 

Nephelite-basalt. 

F 

Cr,03 

BaO 

SrO 

0. 63 
trace 
none 
none 

Anna  Lee  Mine,  Cripple 
Creek,  Colorado. 

W.  F.  Hillebrand. 

W.  Cross, 

B.  U.  S.  G.  S.,  148, 
p.  162,  1897. 

Nephelite-basalt. 

“Altered.” 

Not  described. 

ZrO.. 

S03 

Cl 

FeS., 

BaO' 

SrO 

none 

none 

trace 

0.38 

0. 14 

0.17 

Appie  Ellen  Shaft,  Crip¬ 
ple  Creek,  Colorado. 

W.  F.  Hillebrand. 

W.  Cross, 

16  A.  R.  U.  S.  G.  S., 

II,  p.  50,  1890. 

Nephelite-basalt. 

“Altered.” 

Picota,  Serra  de  Mon- 
chique,  Portugal. 

G.  Pajkull. 

Kraatz-KoschlauandHackmann, 
T.  M.  P.  M., 

XVI.  p.  275,  1896. 

Nephelite-tephrite. 

Low  sum  due  to 
H20  and  C02? 

Liitzelberg,  Kaiser- 
stuhl,  Baden. 

A.  Knop. 

A.  Knop, 

D.  Kaiserstuhl,  Leipzig,  1892, 
p.  274. 

Basanite. 

Not  fresh. 

Calc,  to  100,  af¬ 
ter  deducting 
3.00  1I20. 

458 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


NEPH  ELITE-PLAGIOCLASE  ROCKS— Continued. 


1 

J) 

No. 

Si02 

A1A 

Fe20:) 

FeO 

MgO 

CaO 

Na,0 

K20 

H,0+ 

H.,0 — 

CO, 

TiO, 

PA 

MnO 

Sum 

Sp.  gr. 

13 

1  41.76 

12.  61 

8.39 

7.38 

5.  23 

13.  62 

2.  58 

1.19 

3.  66 

4.49 

100. 31 

A3.  Ill 

J 

14 

1  44. 10 

12.80 

5.  43 

5.  73 

10.  66 

10.  57 

2.84 

1.24 

3.  90 

0.  36 

2. 46 

0.  55 

0. 18 

101.  79 

2.  956 

Dl.  IV 

j 

15 

1  42.  68 

15.  02 

7.95 

6.  09 

4.  99 

9.  77 

4.  97 

1.42 

3.  61 

0.  46 

2.  48 

0.  21 

101. 95 

2.  925 

D2.  V 

1 

16 

1  44.20 

17.  03 

5.  30 

5.  70 

7.20 

9.10 

5.  90 

2.  95 

3.  83 

101. 21 

■ 

C3.  V 

1 

17 

D‘2.  V 

18 

J  42. 71 

17.  05 

0.  92 

7.  66 

5.  49 

12.  31 

10. 48 

2.  81 

0.  60 

0.60 

0.  96 

101.  59 

3.  095 

|  52.  55 

14.  63 

10.  70 

n.  d. 

1.71 

6.  37 

3.  83 

3.  48 

6.  72 

0.  63 

100. 62 

A4.  IV 

19 

1  45.  28 

12.  95 

9.  83 

4.  73 

3.  82 

10.91 

3.  34 

2.  03 

1.88 

0.  69 

0.16 

1.60 

0.  70 

0.  91 

98.  83 

2.  785 

D‘2.  V 

J 

20 

1  38.39 

17.38 

6.  49 

6.  83 

7.12 

13. 14 

4.  79 

2.  33 

1.01 

0.  21 

0. 19 

1.74 

1.41 

101.03 

3.  05 

C2.  IV 

21 

B3.  IV 

1 

j  40. 99 

16.  50 

10.  62 

n.  d. 

3.  29 

12.  63 

5.  95 

2.  36 

2.  63 

2.  41 

0.  89 

0.35 

99.  62 
.08 

2.  91 

99.  54 

MONCHIQUITE,  ETC. 


1 

C3.  V 

1 

|  45.  58 

15.87 

4.  65 

6.  37 

8.  32 

9.  91 

3.  42 

1.61 

3. 14 

trace 

98.  87 

2 

D3.  V 

j  45. 13 

18.  06 

11.88 

0.  32 

1.12 

10. 17 

3.  57 

6.  06 

3.04 

* 

0.39 

99.  74 

3 

D3.  V 

|  40.  37 

17.  86 

14.  45 

0.  38 

1.63 

17.  61 

1.29 

0.  83 

4.  47 

99.  39 

4 

A2.  II 

|42.57 

15.  90 

2. 10 

6.  85 

3.18 

10.55 

4.  71 

3.  88 

2.  00 

4.  87 

2.  50 

trace 

0.  79 

99.  90 

5 

Bl.  V 

|  41.  37 

16.  25 

16.  93 

n.  d. 

4.  57 

12.  35 

4. 18 

3.  98 

0.  45 

100.  08 

6 

B4.  V 

|  40.  47 

11.86 

17.44 

nTd. 

3. 10 

16.  80 

1.90 

4.  21 

3.  60 

99.  38 

3. 102 

7 

D4.  V 

j  31.  80 

18.  78 

15.  20 

n.  d. 

3.32 

14.  60 

1. 10 

5.07 

8.10 

0.95 

98.  92 

2.  939 

8 

Cl.  V 

i  38.  07 

17.92 

14.  08 

n.  d. 

8.  87 

11.  70 

0.  96 

2.  23 

5.  50 

• 

99.  33 

9 

C3.  V 

|  46.  98 

17.  07 

1.85 

7.02 

8.29 

12. 15 

2.  54 

0.  53 

4.  86 

0.09 

101.38 

3.20 

INFERIOR  ANALYSES. 


459 


NEPHELITE- PL  AG  IOCL  AS  E  ROCKS— Continued. 


Inclusive. 

Locality. 

Analyst. 

• 

Reference. 

Author’s  name. 

Remarks. 

Ilamberg,  Neckarelz, 
Baden. 

E.  E.  Dana. 

F.  Schalch, 

G.  Sp.  K.  Bad., 

Bl.  Mosbach,  p.  32,  1894. 

Neph  elite-basalt. 

Not  fresh. 

X  0.71 

S03  0. 09 

Cl  0. 17 

Linsberg,  Rhengebirge. 

E.  Moller. 

E.  Moller, 

N.  J.,  1888, 

I,  p.  105. 

Nephelite-basanite. 

X  2.30 

Cl  trace 

Linsberg,  Rhongebirge. 

E.  Moller. 

E.  Moller, 

N.  J.,  1888, 

I,  p.  102. 

Nephelite-basanite. 

\ 

Steinerberg,  Schorbach, 
Hesse. 

Keim. 

H.  Wolff, 
cf.  N.  J.,  1891 

II,  p.  279. 

Nephelite-basanite. 

Bubenik,  Grossdehsa, 
Saxony. 

O.  Beyer. 

O.  Bever, 

T.  M.  P.  M., 

X,  p.  14,  1889. 

Nephelite-basalt. 

Na20  high, 
cf.  reference. 

SO:J  trace 

Cl  trace 

Liebwerda,  Bohemia. 

F.  Ullik. 

J.  E.  Hibsch, 

T.  M.  P.  M., 

XV,  p.  237,  1896. 

Tephrite  tuff. 

Not  fresh. 

SO3  trace 

Schichenberg, 
n.  Tetschen, 

Bohemia. 

F.  Hanusch. 

J.  E.  Hibsch, 

T.  M.  P.  M., 

XIV,  p.  105,  1894. 

Nephelite-leucite- 

tephrite. 

Alkalies  low? 

SO3  none 

St.  Georgsberg, 

Randnitz, 

Bohemia. 

J.  Hoffmann. 

J.  Hoffmann, 
cf.  N.  J.,  1898, 

II,  p.  59. 

Nephelite-basalt. 

MnO  high. 

S03  0. 64 

Cl  0. 36 

1 

Teufelsmuhle, 
Hochstraden,  Styria. 

A.  Jager. 

A.  Sigmund, 

T.  M.  P.  M., 

XVI,  p.  347,  1897. 

Nephelinite. 

MONCHIQUITE,  ETC. 


Shelburne  Point,  Bur¬ 
lington,  Vermont. 

H.  T.  Vulte. 

J.  F.  Kemp  in  Weed  and 

Pirsson,  B.  U.  S.  G.  S., 

139,  p.  116,  1896. 

Monchiquite. 

New  analysis  of 
next  No. 

Shelburne  Point,  Bur¬ 
lington,  Vermont. 

W.  H.  Morrison. 

Kemp  and  Marsters, 

B.  U.  S.  G.  S., 

107,  p.  34,  1893. 

Monchiquite. 

A1A,  FeA, 

and  K2Ohigh. 
FeO  and  MgO 
low. 

Same  as  above. 

Burlington,  Vermont. 

W.  H.  Morrison. 

Kemp  and  Marsters, 

B.  U.  S.  G.  S., 

107,  p.  34,  1893. 

Monchiquite. 

A1A,  FeA, 

and  CaO  high. 
FeO,  MgO  and 
alkalies  low. 

S  trace 

S.  Berge,  A  ln<">,  Sweden. 

N.  Sahlbom. 

N.  Sahlbom, 

N.  J.,  1897, 

II,  p.  98. 

Monchiquite. 

Not  fresh. 

Beemerville,  Sussex 
County,  New  Jersey. 

F.  W.  Love. 

J.  F.  Kemp, 

Tr.  N.  Y.  Ac.  Sci., 

XI,  p.  69,  1892. 

Ouachitite. 

ALA  high? 

Rutan’s  Hill,  Sussex 
County,  New  Jersey. 

J.  F.  Kemp. 

J.  F.  Kemp, 

A.  J.  S., 

XXXVIII,  p.  133,  1889. 

Ouachitite. 

Not  fresh. 

Beemerville,  Sussex 
County,  New  Jersey. 

J.  F.  Kemp. 

J.  F.  Kemp, 

A.  J.  8., 

XXXVIII,  p.  133,  1889. 

Ouachitite. 

A1A  high. 

Not  fresh. 

Tatumville,  Saline 
County,  Arkansas. 

J.  F.  Kemp. 

J.  F.  Kemp  in  J.  F.  Williams, 

A.  R.  G.  S.  Ark.,  1890, 
p.  399,  1891. 

Ouachitite. 

Angel  Island,  California. 

F.  L.  Ransome. 

F.  L.  Ransome, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  231,  1894. 

Fourchite. 

460 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


No. 

1 

D2.  V 

9 

D4.  V 

3 

D4.  V 

4 

D‘2.  V 

5 

D3.  V 

6 

D3.  V 

7 

D3.  V 

8 

D3.  V 

9 

D3.  V 

10 

D3.  V 

11 

D3.  V 

12 

D3.  V 

13 

D3.  V 

14 

D3.  V 

15 

D3.  V 

16 

D3.  V 


I 

I 

I 

I 

I 

I 

I 

) 

) 

1 

I 

I 

I 

) 

I 


LEUCITE-PLAGIOCLASE  ROCKS,  ETC. 


Si02 

A1A 

Fe203 

FeO 

MgO  | 

CaO 

• 

Na20 

K20 

H20+ 

H20- 

C02 

TiO, 

?A 

MnO 

Sum 

Sp.  gr. 

52.  06 

23.13  i 

8.52 

1.75 

2.  24 

3.  30 

5.37 

3. 10 

1.17 

0. 16 

0.  20 

trace 

101.00 

43. 49 

15. 43 

8.52 

n.  d. 

3.  63 

8.  36 

(12. 

77) 

4.  49 

3.  31 

100. 00 

50. 43 

25.04 

3. 48 

n.  d. 

4.  51 

7.  49 

5. 17 

1.08 

2.  61 

99.  71 

44. 16 

12.  96 

8.07 

3. 10 

10.  83 

12.  26 

1.92 

0.  72 

2.41 

0.  46 

2.06 

1.03 

99.  98 

2.  965 

56.  32 

17.07 

3.11 

. 

6.  03 

2.  05 

6.  53 

2.24 

4.  03 

2.04 

0.  93 

0. 13 

100.  48 

2.492 

56.  07 

16.  31 

1.64 

8.  39 

3.  04 

5.  94 

1.22 

5.27 

1.17 

0.  92 

0. 14 

100.  09 

2.  552 

55. 11 

16.  07 

3.  04 

.  8.46 

3. 10 

6.  46 

1.58 

5.  07 

0.  89 

0.  75 

100.  53 

2.546 

55.  08 

17.  52 

2. 11 

6.17 

2.  41 

6. 19 

1.37 

4.  32 

4.  03 

1.02 

0. 10 

100.  32 

2.  492 

52.  71 

14.  41 

2.  22 

8.  03 

5.11 

11.06 

1.34 

2.  55 

1.01 

1.47 

0. 12 

100.  03 

2.  816 

52. 16 

15.  03 

3.17 

8.  42 

4.  69 

10.  07 

2.  38 

2.  47 

0.  72 

1.15 

0.24 

100.  50 

2.  749 

51.94 

14.  78 

2.94 

. 

9. 13 

2.  63 

8.51 

2.08 

5.  33 

• 

2. 12 

0.62 

0. 17 

100. 25 

48.51 

14.  56 

3.21 

8. 19 

4. 12 

10.  69 

2. 15 

4.24 

2.  80 

0.  95 

0. 16 

99.  58 

2.  726 

51.24 

15.  26 

3.  70 

8.  48 

4.04 

7.  63 

1.08 

2.  85 

5.29 

0.  58 

0. 12 

100. 27 

50. 19 

16.  86 

2. 12 

7.  32 

3.  66 

11.40 

2.11 

3.  78 

1.17 

1.39 

0.  21 

100.  21 

2.  708 

49.34 

18.  99 

3.11 

6.  07 

3.  51 

7.89 

1.89 

6.  03 

1.98 

1.31 

0.  26 

100.  38 

2.  562 

49.  23 

15.04 

1.39 

9.  03 

8.  02 

13.  58 

1.07 

1.54 

0.  93 

0. 17 

0.37 

. 

'  100.  37 

Inclusive. 


INFERIOR  ANALYSES. 
LEUCITE-PLAGIOCLASE  ROCKS,  ETC. 


461 


Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Cerro  de  las  Yirgenes, 
Lower  California, 
Mexico. 

Jiiger. 

K.  v.  Chrustchoff, 

T.  M.  P.  M., 

VI,  p.  168,  1885. 

Leucitophyre. 

Al.,0,  high. 

MgO  low. 
Alkalies  inter¬ 
changed? 
Mean  of  2  anals. 

Sta.  Cruz,  Rio  de 
Janeiro,  Brazil. 

Not  stated. 

E.  Hussak, 

N.  J.  1892, 

IIr  p.  152. 

Leucite-tephrite. 

Alkalies  by  dif¬ 
ference. 

Clermain,  n.  Cluny, 
France. 

Not  stated. 

Michel  Levy  and  Lacroix, 

B.  Serv.  Cte.  G.  Fr,, 

VII,  No.  45,  p.  9,  1895. 

Leucotephrite. 

A1208  high. 
Alkalies  low. 

Dobernberg,  Tetschen, 
Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M., 

XIV,  p.  Ill,  1894. 

Leucite-basanite. 

Alkalies  low. 
Leucite-basalt  in 
T.  M.  P.  M., 
XV,  p.  255, 
1895. 

Montalto,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  115. 

Leucite-basani  te. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  28, 
1889. 

Montalto,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  115. 

Leucite-basanite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  28, 
1889. 

Montalto,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  115. 

Leucite-basan  i  te. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  28, 
1889. 

Montalto,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  115. 

Leucite-basanite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  28, 
1889. 

Canonica,  Orvieto, 

Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucitite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  20, 
1889. 

Monte  Bisenzio,  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  106. 

Leucite-tephrite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  19, 
1889. 

Fosso  Pantacciano, 

Lake  Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  lli. 

Leucite-basanite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  23, 
1889. 

Fosso  Pantacciano, 

Lake  Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucitite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B„  VI,  p.  20, 
1889. 

Toscanella,  n.  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  106. 

Leucite-tephrite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  19, 
1889. 

San  Magno,  W.  of  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucite-tephrite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  20, 
1889. 

Gradoli,  Lake  Bolsena, 
Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  119. 

Leucite-tephrite 

tuff. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  32, 
1889. 

Montefiascone,  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad. 

1888,  p.  111. 

Leucite-basan  i  te. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  23, 
1889. 

462 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


LEUCITE-PLAGIOCLASE  ROCKS,  ETC.— Continued. 


No. 

SiO, 

1 

A1A 

Fe._,03 

FeO 

MgO 

CaO 

Na,,0 

K,0 

h2o+ 

FLO— 

C’02 

Ti02 

P205  MnO 

i  | 

Sum 

Sp.  gr. 

. 

17 

D3.  V 

>  49. 18 

16.  07 

1. 17 

8.  94 

5. 43 

13.26 

1.25 

2.  07 

1.62 

\ 

0.41 

0.  42 

100.  30 

IS 

D3.  V 

|  48.  84 

15.  45 

2.  78 

9.62  ! 

5.  37 

13.  29 

1.24 

1.83 

0.  72 

0.  22 

0.34 

100.  26 

19 

D3.  V 

J-  47.  61 

'  17.  38  ' 

2.  03 

7.24 

6.  21 

15.  61 

0.86 

1.81 

0.64 

0.  61 

0.  21 

100.  21 

2.  731 

20 

D3.  V 

|  49.  03 

16.  07 

1.  76 

10.  05 

3.  94 

12.  04 

1.73 

3.06 

1.38 

0.  27 

0.44 

100.  34 

21 

D3.  V 

|  48.  75 

16.  03 

1.83 

10. 12 

4.02 

11.  72 

1.89 

2.  94 

1.39 

0.31 

0.  42 

100. 04 

22 

D3.  V 

j  48.  30 

15.  07 

1.53 

9. 18 

7.48 

13.  95 

0.94 

1.73 

1.  78 

0.  47 

0.  29 

100.  72 

23 

D3.  V 

j  48. 28 

16.  51 

3.  07 

7.62 

4.  03 

12.  50 

0.  86 

1.84 

3.  51 

1.71 

0. 16 

100.  09 

2.  769 

24 

D3.  V 

1  48.  09 

13.  60 

2  52 

9.  36 

6.  75 

13.  05 

1.41 

3.  07 

1.62 

0.41 

0.10 

99.  98 

2.  762 

25 

D4.  V 

j.  51.42 

18.  57 

n.  d. 

8.  47 

0.  48 

2.  74 

10.  38 

6,  42 

0.  88 

0. 14 

trace 

100.  23 

2.  49 

26 

D3.  V 

j  48.  38 

19.  03 

n.  d. 

10.  57 

1.13 

5.  69 

4.  40 

8.65 

0.64 

0. 15 

0.  33 

trace 

100.  61 

2.  67 

27 

D4.  V 

|  47.50 

28.  38 

3.  68 

n.  d. 

!  1.36 

5.03 

trace 

4.  60 

6.  00 

3.  40 

trace 

99.  95 

2.  35 

28 

D4.  V 

J-  46.  85 

21.49 

5.  21 

n.  d. 

0.96 

8.  54 

trace 

4.  68 

8. 10 

3.  80 

trace 

99.  63 

2. 16 

29 

D4.  V 

|  46. 59 

27. 12 

5.  83 

n.d. 

0.  53 

4.  76 

trace 

2.04 

8.90 

3.  90 

■ 

trace 

100.  67 

2.  02 

30 

D4.  V 

J-  46.  57 

19.  86 

n.  d. 

8.97 

1.82 

10.  38 

3.13 

7. 48 

1.29 

0.44 

0.  93 

100.  87 

2.  67 

31 

C3.  V 

J  45.  93 

18.  27 

n.  d. 

9.39 

[  4.41 

10.  98 

3.99 

6.  28 

0.  83 

0.  09 

0.39 

0.  06 

100. 62 

2.  62 

32 

C3.  V 

|  45.  71 

17.  90 

n.  d. 

9.69 

3.  87 

10.  56 

4.  85 

5.  21 

1.82 

trace 

0.34 

0.54 

100.  61 

2.  78 

33 

D4.  V 

j  45.  02 

22.57 

8.  94 

2.35 

10.  09 

3.28 

7. 13 

0.  91 

0.  40 

trace 

100. 69 

2.  83 

34  - 

D4  .V 

|  46. 15 

23. 19 

6.  42 

n.  d. 

2.  25 

8.  52 

trace 

3.  01 

5.  50 

4.  90 

trace 

99.94 

2.  33 

INFERIOR  ANALYSES. 


463 


LEUCITE-PLAGIOCLASE  ROCKS,  ETC.— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

0. 48 

Montefiascone,  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucitite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  20, 
1889. 

so3 

0. 56 

R.  R.  tunnel,  Montefias¬ 
cone,  Lake  Bolsena. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucitite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  20, 
1889. 

Montefiascone,  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  111. 

Leucite-basanite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  23, 
1889. 

so3 

0.57 

Sassi  Lanciati,  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucitite, 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  20, 
1889. 

so3 

0. 62 

Sassi  Lanciati,  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucitite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  20, 
1889. 

Monte  Jugo,  Lake  Bol¬ 
sena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  108. 

Leucitite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  20, 
1889. 

Santa  Trinita,  Orvieto, 
Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  106. 

Leucite-tephrite. 

■ 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  19, 
1889. 

Valentano,  Lake 
Bolsena,  Italy. 

L.  Ricciardi. 

C.  Klein, 

Sb.  Berl.  Akad., 

1888,  p.  111. 

Leucite-basanite. 

Alkalies  low. 
Also  in  N.  J.  B. 
B.,  VI,  p.  23, 
1889. 

S03 

0.73 

Tavolato,  Alban  Hills, 
Italy. 

G.  Aichino. 

V.  Sabatini, 

Mem.  Cta.  G.  Ital., 

X,  p.  164,  1900. 

Leucite-tephrite 
(with  hatiyne). 

A1203  high. 

MgQ  low. 

Dried  at  110°. 

so3 

1.64 

Lago  di  Nerni,  Alban 
Hills,  Italy. 

G.  Aichino. 

V.  Sabatini, 

Mem.  Cta.  G.  Ital., 

X,  p.  164,  1900. 

Leucite-tephrite 
(with  haiiyne). 

A1.,03  high. 

MgO  low. 

Dried  at  110°. 

Cr203 

trace 

Via  Ardeatina,  Alban 
Hills,  Italy. 

Trottarelli. 

A.  Verri, 

B.  Soc.  G.  Ital., 

XII,  p.  72,  1893. 

Leucitite-tuff. 

A1203  high? 

Cr.,03 

trace 

Casale  Caffarella,  Alban 
Hills,  Italy. 

Trottarelli. 

A.  Verri, 

B.  Soc.  G.  Ital., 

XII,  p.  54,  1893. 

Leucitite-tuff. 

Cr203 

trace 

Alban  Hills,  Italy. 

Trottarelli. 

A.  Verri, 

B.  Soc.  G,  Ital., 

XII,  p.  60,  1893. 

Leucitite-tuff. 

Rocca  di  Papa,  Alban 
Hills,  Italy. 

G.  Aichino. 

V.  Sabatini, 

Mem.  Cta.  G.  Ital., 

X,  p.  163,  1900. 

Leucitite. 

Not  fresh. 

Dried  at  110°. 
A1203  high. 

MgO  low. 

go 

O 

& 

trace 

Rocca  di  Papa,  Alban 
Hills,  Italy. 

G.  Aichino. 

V.  Sabatini, 

Mem.  Cta.  G.  Ital., 

X,  p.  163,  1900. 

“Sperone.” 

Dried  at  110°. 
Not  fresh. 

so* 

0. 12 

Rocca  di  Papa,  Alban 
Hills,  Italy. 

G.  Aichino. 

V.  Sabatini, 

Mem.  Cta.  G.  Ital., 

X,  p.  163,  1900. 

“  Sperone.” 

Dried  at  110°. 
Not  fresh. 

Rocca  di  Papa,  Alban 
Hills,  Italy. 

G.  Aichino. 

V.  Sabatini, 

Mem.  Cta.  G.  Ital., 

X,  p.  163,  1900. 

Leucitite. 

Dried  at  110°. 

Cr203 

trace 

Cava  di  San  Paolo, 

Alban  Hills,  Italy. 

Trottarelli. 

A.  Verri, 

B.  Soc.  G.,  Ital., 

V  IT  ™  K'-i  1  SQQ 

Leucitite  tuff. 

A1A  high. 

464 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


LEUCITE-PLAGIOCLASE  ROCKS,  ETC.— Continued. 


No. 

Si02 

A1A 

Fe203 

FeO 

MgO 

CaO 

Na20 

K20 

H,0+ 

h2o- 

C02 

Ti02 

p2o5 

MnO 

Sum 

Sp.  gr. 

35 

1  59. 92 

18.  09 

4.  52 

n.  d. 

0.44 

2. 19 

6.  23 

7.  24 

1. 17 

99.  80 

B4.  V 

1 

36 

\  47.  25 

18. 17 

9.  23 

n.  d. 

3.  74 

8.  65 

3.  93 

7. 15 

0.  94 

trace 

99.  06 

2.  723 

C4.  V 

1 

3, 

\  51.38 

26. 

35 

n.  d. 

6.  03 

9.09 

4.  76 

3.  33 

n.  d. 

100.  93 

D4.  Y 

I 

38 

1  47. 13 

14.  47 

13.  56 

n.  d. 

4. 16 

9.  00 

0.  81 

8.  00 

2.  94 

100.  07 

A4.  IV 

I 

39 

1  47.  31 

18.51 

14.56 

n.  d. 

2.  28 

7.  57 

0.  98 

6. 14 

2.  31 

0.  55 

100.  21 

2.  910 

B4.  Y 

I 

40 

46.  43 

15.  99 

15.04 

n.  d. 

1.74 

9.  27 

0.51 

6.  93 

3.  20 

0.  73 

99.  84 

2.  890 

B4.  V 

1 

HAUYNOPHYRE,  ETC. 


1 

J 

54.  00 

24.10 

8.  95 

n.  d. 

2.  35 

4.  65 

5.  60 

1 

1.58 

n.  d. 

101.23 

D4.  V 

1 

■  j 

2 

1  53. 60 

22.57 

6.  78 

n.  d. 

3.92 

5.80 

5.11 

4.01 

n.  d. 

101.  79 

D4.  Y 

1 

3 

1  53.  20 

24.16 

7.  07 

n.  d. 

2.  20 

6.  38 

4.  44 

3.  21 

n.  d. 

100.16 

D4.  V 

1 

4 

53.00 

22.  63 

7.  50 

n.  d. 

2.  47 

7. 14 

1.72 

5.  89 

n.  d. 

100. 60 

D4.  V 

I 

5 

t  52. 80 

21.95 

10.  96 

n.  d. 

3.  06 

7.  05 

4.  37 

2.39 

n.  d. 

102.  58 

D4.  V 

J 

• 

6 

1  54.  48 

21.67 

1.21 

2.  77 

1.44 

5.05 

7.43 

4.  65 

2.  66 

0.  38 

trace 

102.  02 

D2.  V 

I 

7 

l  47.  00 

17.86 

4.  85 

4.  02 

1.10 

5.  30 

6.84 

4.  55 

1.53 

1. 10 

4.  80 

trace 

0.  32 

1.25 

100.  52 

2.  492 

B3.  IV 

1 

' 

8 

1  47.  71 

9.  37 

5.31 

9.  53 

7.  06 

15.13 

2.  21 

1.01 

0.41 

trace 

0.  81 

100.  67 

2.  992 

D3.  V 

I 

26° 

9 

1  46.  72 

19.50 

3.  03 

5.  02 

4.  41 

16.  28 

2.  09 

1.24 

1. 13 

- 

0.  73 

0.37 

100.  52 

3.  012 

D4.  Y 

J 

26° 

10 

1  45. 37 

14. 11 

5.  06 

7.08 

7.56 

17.11 

1.34 

0.  62 

0.  65 

0.  28 

0.  26 

100.  74 

2.  574 

D3.  V 

1 

26° 

11 

1  42.  78 

11.07 

17.07 

5.  51 

4.  23 

12.  57 

1.11 

0.  72 

4.  02 

0.31 

0.  42 

100.  33 

D3.  Y 

1 

12 

42.  63 

18.91 

5.06 

9. 16 

3.  60 

12. 11 

2.  66 

1.35 

2.12 

0.34 

0.36 

100.  37 

2.  538 

D3.  Y 

1 

26° 

13 

42.16 

16.  25 

3.  02 

9.03 

3.11 

10.  05 

2.13 

7.  06 

2.13 

0.26 

:  0.72 

1  100.03 

2.  615 

D3.  Y 

1 

j 

26° 

INFERIOR  ANALYSES. 


465 


LE UCITE-PLAGIOCLASE  ROCKS,  ETC.— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Lava  of  Oct.,  1822,  Mt. 
Vesuvius,  Italy. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  475.  1887. 

Obsidian. 

Cl  trace 

Mt.  Vesuvius,  Italy. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  486,  1887. 

Leucite-tephrite. 

Volcanello,  JEolian. 
Islands,  Italy. 

H.  Back strom. 

H.  Backstrom, 

Q  P  Y 

XVIII,  p.  159,  1896. 

Leucite-basanite. 

Pangkadjene,  South 
Celebes. 

W.  Bruhns. 

H.  Bucking, 

Ber.  Nf.  Ges.  Freib.,\ 

XI,  p.  83,  1899. 

Biotite-leucite- 

basalt. 

El  Capitan,  Canbeligo 
County,  New  South 
Wales. 

J.  C.  H.  Mingaye. 

David  and  Anderson, 

Rec.  G.  S.  N.  S.  W., 

I,  p.  156,  1890. 

Leucite- basalt. 

Byrock,  New  South 
Wales. 

J.  C.  H.  Mingaye. 

David  and  Anderson, 

Rec.  G.  S.  N.  S.  W., 

I,  p.  156,  1890. 

Leucite-basalt. 

HAUYNOPH Y RE,  ETC. 


Aiguille  de  Giiery,  Mt. 
Dore,  Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C  R 

CXXVIII,  p.  1097,  1899. 

Haiiyne-tephrite. 

Not  fresh. 

so3 

trace 

La  Quenille,  Mt.  Dore, 
Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C  R 

CXxVlII,  p.  1097,  1899. 

Hauyne-tephrite. 

so3 

0.50 

Roe  Blanc,  Mt.  Dore, 
Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C  R 

CXXVIII,  p.  1097,  1899. 

Haiiyne-tephrite. 

so3 

0.25 

Roc  Blanc?  Mt.  Dore, 
Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C.  R., 

CXXVIII,  p.  1097,  1899. 

Hauyne-tephrite. 

Not  fresh. 

Roc  Blanc?  Mt.  Dore, 
Auvergne. 

E.  Bonjean. 

E.  Bonjean, 

C  R 

CXXVIII,  p.  1097,  1899. 

Hauyne-tephrite. 

so3 

Cl 

0. 21 

0. 07 

Hohenstein,  Bohemia. 

R.  Pfohl. 

J.  E.  Hibsch, 

T.  M.  P.  M., 

XIX,  p.  82,  1900. 

Sodalite-tephrite. 

Cl 

trace 

Konigsbachthal, 

Bohemia. 

F.  Hanusch. 

J.  E.  Hibsch, 

T.  M.  P.  M., 

XIX,  p.  76,  1900. 

Sodalite-porphyry. 

Cl  low. 

so, 

2. 12 

Summit,  Mte.  Vulture, 
Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.  (7),  1887. 

Lava. 

Alkalies  low. 

Mte.  Vulture,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.  (5),  1887. 

Lava. 

Alkalies  low. 

so3 

1.30 

Mte.  Vulture,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.  (6),  1887. 

Lava. 

Alkalies  low. 

so3 

0.52 

Mte.  Vulture,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.  (7),  1887. 

“Oolitic  rock” 
(lava). 

Alkalies  low. 

so3 

2. 07 

Melfi,  Mte.  Vulture, 
Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.  (10),  1887. 

Hauynophyre. 

Alkalies  low. 

so3 

4.11 

Melfi,  Mte.  Vulture, 
Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.-  (9),  1887. 

Hauynophyre. 

Alkalies? 

\ 

14128— No.  14—03 


•30 


406 


CHEMICAL  ANALYSES  OF  IGNEOL'S  ROCKS 


HAUYNOPHYRE,  ETC. — Continued. 


No. 

Si02 

ai2o3 

Fe203 

FeO 

MgO 

CaO 

Na,0 

K20 

h2o+ 

h2o- 

co2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

14 

41.  77 

14.  05 

4.  21 

11.03 

3.40 

12.  52 

6.  23 

1.38 

1.80 

trace 

1.23 

100.  27 

I>3.  V 

1 

15 

1  39.  74 

10.27 

6.  07 

13. 11 

4.18 

19. 11 

3.  12 

0.  63 

0.  50 

0. 41 

0.63 

101. 03 

2. 630 

D3.  V 

1 

26° 

16 

36.  35 

12.  37 

5.26 

11.71 

7.  46 

16.  82 

2.07 

1.38 

4. 11 

0.  63 

0.  42 

100.  80 

2.  840 

D3.  V 

1 

26° 

IJOLITE,  ETC. 


1 

45. 18 

23.  31 

6. 11 

n.  d. 

1.45 

4.  62 

11.17 

5.  95 

1. 14 

98.  93 

D4.  V 

1 

2 

i  46.  63 

15.  03 

5.91 

5.09 

3.  47 

11.23 

8. 16 

1.96 

0.  35 

1.  12 

trace 

98.  95 

D2.  V 

j 

3 

1  42.  79 

19.  89 

4.  39 

2.  33 

1.87 

11.  76 

9.  31 

1.67 

0.  99 

1.70 

1.  70 

0.41 

98.81 

D2.  V 

I 

MELILITE  ROCKS. 


1 

1  35.  91 

11.51 

2.35 

5.  38 

17.  54 

13.  57 

1.75 

2.87 

9.40 

0.  23 

n.  d. 

• 

100.  51 

A3.  Ill 

1 

2 

1  35.  25 

6. 10 

8.  53 

5.  60 

20.  40 

7.  40 

0.  70 

2.  88 

10. 15 

2.  25 

99.  26 

B3.  IV 

1 

«3 

t  33. 10 

7.  88 

16.  71 

1.48 

13.  42 

5.  25 

0.  23 

0.  29 

17.  85 

2.  90 

99. 11 

C3.  V 

1 

4 

1  35.  54 

11.72 

5.  86 

5.  99 

13.  56 

15.  83 

1.91 

2.  24 

1.67 

4.  30 

2.  03 

0.  32 

100.  97 

3.  052 

B2.  Ill 

1 

" 

5 

1  33.  87 

15.25 

2.37 

5. 15 

12.52 

14. 43 

1.41 

1.02 

2.  47 

8.  64 

2.12 

0.  99 

0.  32 

100.  36 

3.  033 

A2.  II 

J 

6 

j 

30.  69 

10.  48 

5.  76 

7. 47 

11.10 

13.  25 

1.41 

1.82 

2.  88 

8.  21 

5.  52 

0.  64 

0.  55 

99.  78 

A2.  II 

J 

7 

1 

A2.  II 

l  29.  25 

8.  80 

3.  92 

5.42 

17.66 

17.  86 

0.  77 

2.  45 

2.  61 

6.00 

2.  54 

2.  86 

trace 

100.  14 
(100.  04) 

8 

1  24. 19 

12.00 

6.  45 

9.  32 

14.  07 

17.37 

1.99 

3.  06 

5. 16 

- -  2.  77 

trace 

3.  96 

trace 

101. 16 

3.15 

02.  IV 

I 

9 

I  33.  89 

9.  93 

15.  63 

n.  d. 

16. 14 

15. 19 

2.  86 

n.  d. 

2.  90 

1.41 

0.  64 

1.41 

trace 

100.  00 

B4.  V 

J 

10 

1  43.  36 

9.  37 

8.  88 

n.  d. 

10.  42 

15.  38 

1.49 

3.  21 

6.  66 

trace 

98.  77 

D4.  V. 

1 

INFERIOR  ANALYSES. 


467 


HAIJYNOPHYRE,  ETC.— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

2. 65 

Mte.  Vulture,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  I tal . , 

XVII,  p.  (8),  1887. 

Tuff. 

Alkalies? 

so3 

3. 26 

Melfi,  Mte.  Vulture, 
Italy. 

L.  Ricciardi 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.  (9),  1887. 

Hauynophvre. 

Alkalies  low. 

S03  2. 12 

Mte.  Vulture,  Italy. 

L.  Ricciardi. 

L.  Ricciardi, 

Gazz.  Chim.  Ital., 

XVII,  p.  (6),  1887. 

Lava. 

Alkalies  low. 

IJOLITE,  ETC. 


Beemerville,  Sussex 
County,  New  Jersey. 

F.  W.  Love? 

J.  F.  Kemp, 

Tr.  N.  Y.  Ac.  Sci., 

XI,  p.  67,  1892. 

Nephelite-porphyry 
(sussexite) . 

Kaljokthal,  Kola, 
Finland. 

H.  Berghell. 

V.  Hackman, 

Fennia, 

XI,  No.  2,  p.  185,  1894. 

Ijolite. 

Iiwaara,  Kola,  Finland. 

H.  Berghell. 

Ramsav  and  Berghell, 

( 7  F*  F 

XIII,  p.  302,  1891. 

Ijolite. 

MELILITE  ROCKS. 


St.  Anne  de  Bellevue, 
n.  Montreal,  Canada. 

P.  H.  le  Ros- 
signol. 

F.  D.  Adams, 

A.  J.  S., 

XLIII,  p.  271,  1892. 

A  Indite. 

Not  fresh. 

Manheim,  Herkimer 
County,  New  York. 

C.  H.  Smyth,  jr. 

C.  H.  Smyth,  jr., 

B.  G.  S.  A., 

IX,  p.  262,  1898. 

A  Indite. 

Not  fresh. 

Manheim,  Herkimer 
County,  New  York. 

C.  H.  Smyth,  jr. 

C.  H.  Smyth,  jr., 

B.  G.  S.  A., 

IX,  p.  262,  1 898- 

Alndite. 

Much  weath 
ered. 

Naversdale,  Orkney 
Islands. 

J.  S.  Flett. 

J.S.  Flett, 

Tr.  R.  Soc.  Edinb., 

XXXIX,  pt.  4,  p.  897,  1900. 

A  Indite. 

Not  fresh. 

Long  Geo,  Holm, 
Orkney  Islands. 

J.  S.  Flett, 

J.  S.  Flett, 

Tr.  R.  Soc.  Edinb., 

XXXIX,  pt.  4,  p.  898,  1900. 

Melilite- 

monchiquite. 

Not  fresh. 

Storkalfven,  Rddo, 
Sweden. 

H.  Santesson. 

P.  J.  Holmquist, 

Afh.  Sver.  G.  Und., 

No.  181,  p.  86,1899. 

Alndite. 

Not  fresh. 
Dried  at  110°. 

Norrwik,  Alnd, 

Sweden. 

N.  Sahlbom. 

N.  Sahlbom, 

N.  J.,  1897, 

II,  p.  100. 

Alndite. 

Not  fresh. 

0.25  F  (calc, 
omitted. 

Cl 

Cr203 

0.53 

0.29 

trace 

Stornaset,  Alno, 

Sweden. 

F.  Berwerth. 

Raimann  and  Berwerth, 

Ann.  K.  Iv.  Nh.  Hof.  Mus., 

X,  p.  76,  1895. 

Alndite. 

Not  fresh. 
Dried  at  130°. 

S 

Cr»03 

trace 

trace 

Hochbohl,  Owen, 
Wurtemberg. 

J.  Meyer. 

A.  Stelzner, 

N.  J.  B.  B., 

II.  p.  398,  1883. 

Melilite-basalt. 

Not  fresh. 

Calc,  from  Sol. 
and  Insol. 

Mte.  Terminillo, 

Rieti,  Italy. 

L.  Brugnatelli. 

L.  Brugnatelli, 

B.  Com.  G.  Ital., 

XIV,  p.  318,  1883. 

, 

Melilite-pyroxene 

rock. 

468 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


LIMBURGITE. 


No. 

Si02 

A1A 

Fe,Os 

FeO 

MgO 

1 

CaO 

Na20 

K20 

H20+ 

H,0- 

co.2 

Ti02 

PA 

MnO 

Sum 

Sp.  gr. 

1 

A2.  II. 

•  36.80 

4. 16 

n.'  d. 

8.  33 

25.  98 

8.  63 

0.17 

2.  48 

6.  93 

0.  51 

• 

2.  95 

1.  26 

• 

0. 47 

0. 13 

100.  22 

2 

D4.  V 

|  44.  47 

10.  97 

n.  d. 

13.  08 

6.  24 

12.  66 

4.  58 

1.68 

. 

2.  27 

none 

3.  56 

trace 

101. 70 

3 

B4.  V 

|  43.  33 

11.06 

n.  d. 

15.  25 

6.  24 

12.  66 

4.58 

1.  68 

1.43 

■ 

none 

4.  63 

trace 

100.  86 

4 

B4.  V 

•  42.  61 

11.55 

n.  d. 

12.  27 

12. 10 

13.  43 

1.06 

2.  80 

4.  33 

100. 15 

5 

B4.  V 

|  40.48 

8.  93 

20.  05 

n.  d. 

11. 12 

13.  03 

2.  05 

1.26 

3.37 

100.  29 

2.  931 

6 

C4.  V 

|  42.  30 

12.  74 

10.  60 

n.  d. 

12.  74 

13.  01 

2.  65 

0.  94 

2.54 

1.51 

99.  03 

7 

B4.  V 

j  39.  07 

13.  70 

20.  92 

n.  d. 

6.  90 

10.  04 

2.1 

58 

3.  53 

2.  46 

0.  21 

0.52 

0.  55 

100.  89 

8 

D4.  V 

J  53.  92 

17.98 

n.  d. 

4.  88 

4.  57 

7.59 

3.  92 

1. 14 

4.  64 

98.  64 

9 

B3.  IV 

J  39.  32 

17.53 

3.  07 

9. 12 

8.  00 

10.  38 

2.  44 

2.  04 

5.  10 

2.  20 

' 

• 

99.  20 

PYROXENITE. 


1 

D4.  V 

|  43.  35 

29.  75 

5.  61 

n.  d. 

2.  03 

12.  46 

trace 

5.  93 

0.  73 

99.  86 

2 

B4.  IV 

|  54. 12 

7.91 

n.  d. 

12.  87 

16.  64 

6.  21 

0.44 

1. 19 

n.  d. 

99.  38 

3.  30 

3 

C4.  V 

|  46.  86 

9.  80 

16.  35 

n.  d. 

18.  08 

9.57 

trace 

trace 

0.  67 

101.33 

3.  333 

PERIDOTITE. 


1 

I 

V 

\  20.85 

5.  55 

45.62 

16.  45 

0.  73 

n.  d. 

n.  d. 

n.  d. 

9.  93 

trace 

99.  69 

D4.  V 

1 

■ 

2 

1  37.  44 

28.  60 

11.92 

n.  d. 

1.97 

5.  45 

0.  97 

1.02 

12.  67 

100.  04 

1)4.  V 

J 

o 

1  33.  80 

6.84 

12.  26 

n.  d. 

21 . 38 

9.50 

n.  d. 

n.  d. 

15.  20 

98.  98 

2.  732 

D4.  V 

j 

4 

41.  00 

7.  58 

5.  99 

4.  63 

23.  59 

10.  08 

0.  52 

n.  d. 

4.73 

3.  62 

trace 

101. 74 

2.  989 

D3.  V 

J 

. 

5 

1  34.  50 

14.37 

2.  85 

4. 46 

21.  81 

11.48 

0.51 

1.  50 

7. 14 

0.  21 

0.  77 

100. 15 

A2.  II 

] 

INFERIOR  ANALYSES. 


469 


LIMBURGITE. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

SO:,  0.06 

S  0.95 

NiO  0.09 

BaO  0.12 

SrO  trace 

Syracuse,  New  York. 

H.  N.  Stokes. 

Barton  and  Kemp, 

A.  J.  S., 

XLIX,  p.  461,  1895. 

Limburgite. 

Not  fresh. 

Wesenweiler, 
Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

Der  Kaiserstuhl, 

Leipzig,  1892,  p.  283. 

Limburgite. 

MgO,  CaO, 
Na.20,  and 
K20? 

Eichelspitze, 

Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

Der  Kaiserstuhl, 

Leipzig,  1892,  p.  281. 

Limburgite. 

MgO,  CaO, 
Na20,  and 
K20? 

Limburg, 

Kaiserstuhl,  Baden. 

A.  Knop. 

A.  Knop, 

Der  Kaiserstuhl, 

Leipzig,  1892,  p.  296. 

Limburgite. 

Not  fresh. 

2.11  H,0.  Ig¬ 
nited  before 
analysis. 

Kaiserstuhl,  Baden. 

A.  Lagorio. 

A.  Lagorio, 

T.  M.  P.  M., 

VIII,  p.  479,  1887. 

Limburgite. 

Reiehenweier,  Voge- 

sen,  Elsass. 

* 

G.  Linck. 

G.  Linck, 

Mt:  Com.  G.-L.  U.  Es., 

I,  p.  60,  1887. 

Limburgite. 

S03  0.18 

Cl  0.13 

F  trace 

Pardubic,  Bohemia. 

F.  Kovar. 

F.  Kovar, 

Cf.  G.  Cb., 

I,  p.  514,  1901. 

Limburgite. 

Chichishima,  Bonin 
Islands,  Japan. 

J.  Petersen. 

J.  Petersen, 

Jb.  Hamb.  Wise.  Anst., 

VIII,  p.  30,  1891. 

Boninite  (bronzite- 
limburgite). 

A1,03  high. 

Bendigo,  Victoria, 
Australia. 

A.  W.  Howitt. 

A.  W.  Howitt, 

Cf.  N.  J.,  1894, 

II,  p.  271. 

» 

Limburgite. 

PYROXENITE. 


Rosetown,  West  of 

Stony  Point,  New 
York. 

J.  F.  Kemp? 

J.  F.  Kemp, 

A.  J.  S., 

XXXVI,  p.  250,  1888. 

Hornblende-augite 

rock. 

A1203  high. 

MgO  low. 

Jackass  Creek,  Mon¬ 
tana. 

V 

G.  P.  Merrill. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 

XVII,  p.  662,  1895. 

W  ebsterite. 

Pallavaram,  Madras, 
India. 

T.  L.  Walker. 

T.  H.  Holland, 

Mem.  G.  S.  Ind., 

XXVIII,  p.  166,  1900. 

H  ypersthenite. 

PERIDOTITE. 


S  trace 

Iron  Mine  Hill,  Cumber¬ 
land,  Rhode  Island. 

T.  Drown. 

M.  E.  Wadsworth, 

Lithol.  Stud., 

1884,  p.  XVI. 

Cumberlandite. 

Ithaca,  New  York. 

• 

W.  H.  Morrison. 

J.  F.  Kemp, 

A.  J.  S., 

XLII,  p.  412,  1891. 

Peridotite. 

Not  fresh. 

Manheim,  Herkimer 
County,  New  York. 

C.  W.  Smith,  jr. 

C.  H.  Smyth,  jr., 

A.  J.  S., 

XLIII,  p.  325,  1892. 

Peridot!  te. 

Not  fresh. 

Pikesville,  Baltimore 
County,  Maryland. 

L.  McCav. 

G.  H.  Williams, 

B.  U.  S.  G.  S., 

28,  p.  54,  1886. 

Peridotite. 

Feldspathic. 

Not  fresh. 

S03  0. 60 

Marion,  Crittenden 
County,  Kentucky. 

L.  G.  Eakins. 

J.  S.  Diller? 

B.  U.  S.  G.  S., 

148,  p.  94,  1897. 

Mica-peridotite. 

Not  fresh. 

Not  described. 

470 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS 


PERIDOTITE— Continued. 


No. 

Si02 

A1A 

FeA 

FeO 

MgO 

CaO 

Xa./> 

k2o 

H,0+ 

KS 

o 

1 

CO, 

TiO, 

PA 

MnO 

Sum 

Sp.  gr. 

6 

Al.  I 

j  29.  81 

2. 01 

5. 16 

4.  35 

32.41 

7.  69 

0. 11 

0.20 

8.  92 

6.  66 

2.  20 

0.  35 

0.  23 

100.  86 

2.  781 

7 

A2.  II 

|  29.43 

2.36 

n.  d. 

9.06 

31.  66 

6.  94 

0.  78 

0.  65 

10.  90 

5.  65 

1.48 

trace 

100.  15 

2.  697 

8 

Al.  IV 

|  42.  71 

0.  70 

n.  d. 

6.83 

41. 18 

n.  d. 

n.  d. 

n.  d. 

8.38 

0.09 

100.  21 

3.10 

9 

Al.  I 

|  37.  36 

4.  76 

6. 61 

6.  12 

31. 11- 

1. 19 

trace 

trace 

10.  37 

0.  65 

none 

0.  79 

0.  06 

trace 

99.  68 

10 

D3.  V 

|  43. 65 

6.81 

15.  94 

5.  14 

12.  91 

4.  86 

0.  43 

0.52 

7.46 

1.12 

98.  84 

11 

B4.  V 

j  46. 35 

16.41 

11.  d. 

9.91 

18.  72 

6. 14 

n.  d. 

n.  d. 

3.01 

100.  54 

3.  21 

12 

B4.  V 

|  47.  41 

16.  03 

2.  66 

7.  05 

5.  81 

12.  33 

4.  47 

as  Nad) 

2. 19 

1.29 

trace 

99.24 

2.  96 

13 

Al.  I 

14 

D4.  V 

J  44.81 

1.88 

1.98 

4.52 

30.  91 

6.  58 

0. 

15 

6.  88 

0. 15 

1.79 

none 

0.02 

0. 13 

100. 18 

|  42. 10 

3.  28 

8.  27 

2. 13 

30.  65 

3.  77 

4  1. 

90 

7.  73 

0.  70 

100.  53 

2.  82 

15 

B3.  IV 

16 

C3.  V 

|  38.6 

3.7 

7.  6 

7.8 

27.  7 

7.  7 

none 

0.2 

6.4 

99.8 

3.  00 

|  37.8 

9.  7 

3.4 

7.0 

22.9 

4. 1 

0.8 

trace 

14.0 

99.7 

17 

A4.  IV 

j  49.  10 

8.  48 

5.  79 

n.  d. 

20.  85 

12.90 

1.67 

0.  56 

0.  23 

trace 

100. 15 

18 

A2.  II 

|  38.  35 

7.03 

6.  82 

8.68 

25.  69 

0. 12 

0.  40 

0.  45 

10.  89 

0. 90 

0. 12 

99.  67 

2.  73 

19 

A  4.  V 

j-  39.  42 

1.62 

4.  70 

4.  73 

34. 19 

1.56 

n.  d. 

n.  d. 

12.  29 

0. 37 

0.  89 

100.  23 

2.  86 

20 

D2.  V 

1 

|  38.  82 

0.39 

3.  32 

4.08 

43.  45 

trace 

0.  08 

0.  09 

8.  47 

1.13 

0.15 

103.  41 
(100.  04) 

2.  819 

21 

D3.  V 

|  41.35 

13.  90 

8.24 

7.13 

8.  79 

11.  65 

0. 15 

0. 16 

5.  35 

2.  70 

0.  22 

99.64 

22 

B3.  IV 

j  40.  65 

12.  85 

4.  88 

8.30 

18.  05 

8.  05 

1.38 

0.  91 

2.  70 

2.  30 

0.64 

100. 71 

23 

D3.  V 

J  39.  75 

14.  40 

7.  58 

8.  57 

6. 17 

12.65 

0.  81 

0.  28 

2. 15 

6.  50 

0.71 

99.  57 

24 

D3.  V 

|  39.05 

13.  95 

8. 16 

6.  25 

8.  89 

14.02 

0.  55 

0.  89 

2.  95 

5.10 

0.  55 

100.  36 

INFERIOR  ANALYSES. 


471 


PERIDOTITE — Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

so3 

Cr»03 

NiO 

0.28 

0. 43 

0.05 

Willard,  Elliott  County, 
Kentucky. 

T.  M.  Chatard. 

J.  S.  Diller, 

A.  J.  S„ 

XXXII,  p.  125,  1886. 

Peridotite. 

Not  fresh. 

Also  in  B.  U.  S. 
G.  S.  38, 
p.  24,  1887. 

so3 

s 

Cr203 

NiO 

0.30 

0.20 

0.14 

0.60 

Near  Willard,  Elliott 
County,  Kentucky. 

Peter  and  Kastle. 

J.  S.  Diller, 

B.  U.  S.  G.  S., 

38,  p.  24,  1887. 

Peridotite. 

' 

Not  fresh. 

Cr203 

NiO 

trace 

0.32 

Laurel  Creek,  Rabun 
County,  Georgia. 

W.  H.  Emerson. 

F.  P.  King, 

B.  G.  S.  Georg., 

No.  2,  p.  81,  1894. 

Dunite. 

Not  fresh. 

CI0O3 

NiO 

0. 62 

0. 04 

Crystal  Falls,  Michigan. 

H.  N.  Stokes. 

J.  M.  Clements, 

M.  U.  S.  G.  S., 

XXXVI,  p.  219,  1899. 

Picrite-porphyry. 

Not  fresh. 

Near  Morton,  Minnesota 
River,  Minnesota. 

A.  D.  Meeds. 

C.  W.  Hall, 

B.  U.  S.  G.  S., 

157,  p.  113,  1899. 

Saxonite. 

Not  fresh. 

Between  North  and 
South  Meadow  creeks, 
Montana. 

G.  P.  Merrill. 

G.  P.  Merrill, 

Pr.  U.  S.  Nat.  Mus., 

XVII,  p.  656,  1895. 

Saxonite. 

AIA  high? 

The  Potrero,  San 
Francisco,  California. 

C.  Palache. 

C.  Palache, 

B.  Dep.  G.  Un.  Cal., 

I,  p.  177,  1894. 

Lherzolite. 

Cro03 

NiO 

BaO 

SrO 

0.29 

0.09 

none 

none 

Near  Strawberry  Val¬ 
ley,  Butte  County, 
California. 

W.  F.  Hillebrand. 

H.  W.  Turner, 

J.  G., 

Ill,  p.  403,  1895. 

Peridotite. 

Not  fresh. 

Also  in  17  A.  R. 
U.  S.  G.  S.,  I, 
p.  735,  1896. 

Caithness,  Scotland. 

H.  R.  Mill. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLI,  p.  402,  1885. 

Scy  elite. 

Not  fresh. 

From  3  poor 
partial  anal¬ 
yses. 

Cr,03 

0.1 

Loch  Garabal,  Scotland. 

J.  H.  Player. 

Dakyns  and  Teall, 

Q.  J.  G.  S., 

XL VII I,  p.  145,  1892. 

Olivine-diallage 

rock. 

Not  fresh. 

Firth  of  Forth,  Scot¬ 
land. 

T.  Waller. 

J.  W.  Judd, 

Q.  J.  G.  S., 

XLI,  p.  400,  1885. 

Picrite. 

Not  fresh. 

AU03  high. 

Or»03 

0. 57 

Tue  d’Ess,  Pyrenees. 

Strvesco. 

A.  Lacroix, 
cf.  N.  J.,  1895, 

II,  p.  267. 

Lherzolite. 

S03 

0.22 

Stoppenberg,  Harz 
Mountains. 

K.  Hampe. 

Iv.  A.  Lossen, 

Z.  D.  G.  G., 

XL,  p.  372,  1888. 

Paleopikrite. 

Not  fresh. 

Cr.  Spine! 

0.47 

Kbltschenberg,  Silesia. 

H.  Traube. 

H.  Traube, 
cf.  N.  J.,  1885, 

I,  p.  241. 

Olivine-diallage 

rock. 

Not  fresh. 

S03 

Cr,03 

Org 

trace 

3.32 

0.11 

Habendorf,  Silesia. 

K.  Hampe. 

FI.  Dathe, 

Jb.  Pr.  G.  L-A., 

IX,  p.  327,  1889. 

Peridotite. 

Sum  uncertain. 
Not  fresh. 

Stranik,  Hotzendorf, 
Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien.  G.  R-A., 

XXX,  p.  76,  1896. 

Picrite. 

MgO  low. 

Not  fresh. 

Sohle,  Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien.  G.  R-A., 

XXX,  p.  76,  1896. 

Picrite-porphyry. 

Not  fresh. 

Near  Mtschenowitz, 
Moravia. 

C.  F.  Eichleiter. 

C.  F.  Eichleiter, 

Vh.  Wien.  G.  R-A., 

XXX,  p  75,  1896. 

Picrite. 

MgO  low. 

Not  fresh. 

Zamrsk,  n.  Keltsch, 
Moravia. 

C.  F.  Eichleiter. 

C.  F\  Eichleiter, 

Vh.  Wien.  G.  R-A., 

XXX,  p.  74,  1896. 

Picrite. 

MgO  low. 

Not  fresh. 

I 


472  CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


PERIIK  >TITE— Continued. 


No. 

Si02 

ai203 

Fe2Os 

FeO 

MgO 

CaO 

Na.,<) 

K,0 

H,Of 

H.,0— 

C02 

Ti02 

P-A 

MnO 

Sum 

Bp.  gr. 

25 

1  38.  72 

2.  55 

4.50 

3.  76 

41.  36 

n.  d. 

0.  57 

n.  d. 

7.70 

99. 16 

C4.  V 

1 

26 

1  40. 30 

9.  45 

7.30 

n.  d. 

21.  20 

3.  48 

4.  93 

0.  90 

16.  00 

100.  56 

B4.  V 

1 

27 

1  34.80 

in  FeO. 

n.  d. 

14. 40 

30.  76 

2.  70- 

1.40 

n.  <1. 

10.  60 

5.  55 

inSi02 

100. 21 

2.  67 

D4.  V 

1 

28 

1  33.  00 

in  FeO. 

n.  d. 

12.  00 

32.  38 

9.  60 

0.  67 

n.  d. 

6.  00 

7. 05 

inSiO., 

100.  70 

2.  734 

D4.  V 

j 

29 

1  43.  84 

1.14 

8.  76 

n.  d. 

44.  33 

1.71 

n.  d. 

n.  d. 

1.  06 

0.12 

101.38 

3.  287 

C4.  V 

1 

INFERIOR  ANALYSES. 


473 


PERIDOTITE— Continued. 


Inclusive. 

Locality. 

Analyst. 

Reference. 

Author’s  name. 

Remarks. 

Solwa-Supreya,  Ural 
Mountains,  Russia. 

Krekmever. 

Loewinson-Lessing, 

G.  Sk.  Jushno. 

Dorpat,  1900,  p.  166. 

Dunite. 

Not  fresh. 

Kimberley,  Griqualand, 
South  Africa. 

Not  stated. 

L.  de  Launay, 

C  R 

CXXV,  p.  336,  1897. 

Peridotite  breccia. 

Not  fresh. 

Kimberley,  Griqualand, 
South  Africa. 

H.  C.  Lewis. 

H.  C.  Lewis, 

Gen.  of  the  Diamond, 

London,  1897,  p.  47. 

Kimberlite. 

Not  fresh. 

Kimberley,  Griqualand, 
South  Africa. 

H.  C.  Lewis. 

H.  C.  Lewis, 

Gen.  of  the  Diamond, 

London,  1897,  p.  47. 

Kimberlite. 

Not  fresh. 

Cr..03  0.42 

NiO  0.51 

St.  Paul’s  Rocks, 
Atlantic  Ocean. 

Sipocz. 

Cf.  J.  J.  H.  Teall, 

Brit.  Petr., 

London,  1888,  p.  103. 

Saxonite. 

• 

GLOSSARY  OF  NEW  TERMS  EMPLOYED  IX  THIS  PAPERS 


A. 

Actual  mineral  composition.  The  composition  of  a  rock  in  terms  of  the  minerals  actually 
present,  expressed  quantitatively. 

Alferric.  Having  the  characteristics  of,  or  belonging  to,  the  group  of  aluminous  ferromagnesian 
and  calcic  silicates. 

Alkalicalcic.  Having  salic  alkalies  and  salic  lime  present  in  equal  or  nearly  equal  amounts. 

Alkalimirlic.  Having  femic  alkalies  and  magnesia,  ferrous  iron,  and  femic  lime  in  equal  or  nearly 
equal  amounts. 

C. 

Calcimiric.  Equally  calcic  and  miric,  or  nearly  so. 

Class.  Division  of  igneous  rocks  based  on  the  relative  proportions  of  salic  and  femic  standard 
minerals. 

D. 

Do-  (or  Dom-).  Prefix  indicating  that  one  factor  dominates  over  another  within  the  ratios  f 
and  f . 

Docalcic.  Dominantly  calcic.  Of  salic  minerals  when  C'aO/  dominates  over  K20/'+Na20/;  of 
femic  minerals  when  CaO//  dominates  over  MgO+FeO. 

Dofelic.  Dominantly  felic,  having  normative  feldspar  dominant  over  normative  quartz  or  lenads. 

Dofemic.  Dominantly  femic,  having  femic  minerals  dominant  over  salic. 

Doferrous.  Dominantly  ferrous,  having  FeO  dominant  over  MgO. 

Dohemic.  Dominantly  hemic,  having  hemic  minerals  (magnetite,  hematite)  dominant  over  the 
tilic  minerals  (titanite,  ilmenite,  perofskite,  rutile). 

Dolenic.  Dominantly  lenic,  having  the  lenads  (leucite,  nephelite,  the  sodalites)  dominant  over 
feldspar. 

Domagnesic.  Dominantly  magnesic,  having  MgO  dominant  over  FeO. 

Domalkalic.  Dominantly  alkalic.  Of  salic  minerals  when  K20'  +  Na20/  dominates  over  CaO/; 
of  femic  minerals  when  K20//-f-  Na20//  dominates  over  MgO  -b  FeO  +  CaO//. 

Dominant.  Said  of  a  factor  which  dominates  over  another  within  the  ratios  f  and  f.  Used  in 
connection  with  a  fivefold  comparison. 

Domiric.  Dominantly  miric,  having  MgO  —  FeO  dominant  over  CaO//. 

Domirlic.  Dominantly  mirlic,  having  MgO  —  Feo  —  CaO"  dominant  over  K20//  +Na20//. 

Domitic.  Dominantly  mitie,  having  mitic  minerals  (magnetite,  hematite,  ilmenite,  etc.)  domi¬ 
nant  over  polic  minerals  (pyroxene,  olivine,  akermanite). 

a  The  definitions  here  given  are,  for  the  most  part,  selected  from  those  to  be  found  in  the  glossary  of  Quantitative 
Classification  of  Igneous  Rocks,  by  Cross,  Iddings,  Pirsson,  and  Washington,  Chicago,  1903.  Magmatic  rock  names  are 
not  included,  but  will  be  found  in  a  separate  index. 


475 


CHEMICAL  ANALYSES  OF  IGNEOUS  ROCKS. 


476 

Domolic.  Dominantly  olio,  having  normative  olivine  and  akermanite  dominant  over  normative 
pyroxenes. 

Dopolic.  Dominantly  polio,  having  polio  minerals  (pyroxene,  olivine)  dominant  over  mitic 
minerals  (magnetite,  ilmenite,  etc.). 

Dopotassic.  Dominantly  potassic,  having  K20  dominant  over  Na20. 

Dopyric.  Dominantly  pyric,  having  normative  pyroxene  dominant  over  normative  olivine  and 
akermanite. 

Doquaric.  Dominantly  quaric,  having  normative  quartz  dominant  over  normative  feldspar. 
Dosalic.  Dominantly  salio,  having  salio  minerals  dominant  over  femic. 

Dosodic.  Dominantly  sodio,  having  Na20  dominant  over  K20. 

Dotilic.  Dominantly  tilic,  having  tilic  minerals  (titanite,  ilmenite,  etc.)  dominant  over  hemic 
minerals  (magnetite,  hematite). 

E. 

Extreme.  Said  of  a  factor  that  is  present  alone  or  in  amount  greater  than  q  of  the  other  factor. 

F. 

Fel.  Syllable  mnemonic  of  feldspar. 

Felic.  Having  the  properties  of,  or  containing,  normative  feldspars. 

Fern.  Term  mnemonic  of  the  second  group  of  standard  minerals,  including  nonaluminous 
ferromagnesian  and  calcic  silicates,  silicotitanates,  and  nonsiliceous  and  nonaluminous  minerals. 

Femic.  Having  the  character  of,  or  belonging  to,  the  second  (fern)  group  of  standard  minerals. 
Ferrosilite.  Name  given  to  the  ferrous  hypersthene  molecule,  FeSi03. 

G. 

Grad.  Division  of  subrang  based  on  the  proportions  of  minerals  of  the  subordinate  group  of 
standard  minerals  when  present  in  notable  amount. 

i  H. 

Habit.  Resemblance  in  general  appearance,  both  in  texture  and  mode. 

Hem.  Syllable  mnemonic  of  hematite  and  magnetite. 

Hemic.  Having  the  character  of,  or  containing,  the  minerals  hematite  and  magnetite. 

I. 

Inferior.  Adjective  applied  to  analyses  of  the  last  two  ratings;  that  is,  either  poor. or  bad. 

E. 

Len.  Syllable  mnemonic  of  leueite  and  nephelite,  including  sodalite  and  noselite. 

Lenad.  One  of  the  standard  minerals,  leueite,  nephelite,  sodalite,  noselite.  Equivalent  to 
eldspathoid  (French  feldspathide). 

Lenadic.  Having  the  character  of,  or  belonging  to,  the  lenads. 

Lendofelic.  Having  normative  feldspars  dominant  over  lenads. 

Lenfelic.  Having  normative  feldspars  and  lenads  in  equal,  or  nearly  equal,  amounts. 

M. 

Magnesiferrous.  Equally  magnesic  and  ferrous,  or  nearly  so. 

Mar.  Syllable  mnemonic  of  magnesia  and  ferrous  iron. 

Miric.  Characterized  by  the  presence  of  MgO  or  FeO,  or  both.  Opposed  to  calcic. 


GLOSSARY  OF  NEW  TERMS. 


477 


Mirl.  Syllable  mnemonic  of  magnesia,  ferrous  iron,  and  lime. 

Mirlic.  Characterized  by  the  presence  of  MgO,  FeO,  and  CaO".  Opposed  to  femic  alkalic. 

Mit.  Syllable  mnemonic  of  magnetite,  ilmenite,  and  titanite,  and  including  all  the  minerals  of 
the  second  subgroup  of  femic  minerals. 

Mitic.  Having  the  characters  of  the  above-mentioned  minerals. 

Modal.  Relating  to  the  mode. 

Mode.  The  actual  mineral  composition  of  a  rock.  Opposed  to  norm,  with  which  it  may  or  may 
not  coincide. 

N. 

Negligible.  Term  applied  to  the  amount  of  any  chemical  or  mineral  factor  when  it  is  less  than 
one-eighth  of  the  group  of  factors  under  consideration. 

Norm.  The  standard  mineral  composition  of  a  rock;  that  is,  the  chemical  composition  expressed 
in  terms  of  standard  minerals.  Opposed  to  mode,  with  which  it  may  or  may  not  coincide. 

Normative.  Relating  to  the  norm.  That  which  makes  up  the  norm. 

Notable.  Term  applied  to  the  amount  of  any  chemical  or  mineral  factor  when  it  is  greater  than 
one-eighth  of  the  group  of  factors  under  consideration. 

O. 

01.  Syllable  mnemonic  of  olivine,  including  also  akermanite. 

Olic.  Having  the  properties  of,  or  containing,  normative  olivine  or  akermanite. 

Order.  A  division  of  subclass  based  on  the  relative  proportions  of  the  standard  mineral  subgroups 
>  in  the  preponderant  group. 

P. 

Per-.  Prefix  to  indicate  that  a  factor  is  present  alone  or  in  extreme  amount;  that  is,  that  its  ratio 
to  another  factor  is  >f. 

Peralkalic.  Extremely  alkalic.  Of  salic  minerals  when  K.J0/+iSa,0/  is  extreme  over  Ca<  V; 
of  femic  minerals  when  K20//-f-Na20//  is  extreme  over  MgO+FeO-f  CaO". 

Percalcic.  Extremely  calcic.  Of  salic  minerals  when  CaO/  is  extreme  over  E20/+Na20/;  of 
femic  minerals  when  C'aO"  is  extreme  over  MgO+FeO. 

Perfelic.  Extremely  felic,  with  normative  feldspar  extreme  over  normative  quartz  or  lenads. 

Perfemic.  Extremely  femic,  having  the  femic  minerals  extreme  over  the  salic. 

Perferrous.  Extremely  ferrous,  having  FeO  extreme  over  MgO. 

Perhemic.  Extremely  hemic,  having  hemic  minerals  (magnetite,  hematite)  extreme  over  the 
tilic  minerals  (ilmenite,  titanite,  etc.). 

Perlenic.  Extremely  lenic,  having  lenic  minerals  (leucite,  nephelite,  sodalite,  noselite)  extreme 
over  the  felic  minerals  (feldspars). 

Permagnesic.  Extremely  magnesic,  having  MgO  extreme  over  FeO. 

Permiric.  Extremely  miric,  having  MgO+FeO  extreme  over  CaO/r. 

Permirlic.  Extremely  mirlic,  having  MgO+FeO-t-CaO"  extreme  over  K._,0//+Na._,0//. 

Permitic.  Extremely  mitic,  having  mitic  minerals  (magnetite,  ilmenite,  hematite,  etc.)  extreme 
over  the  polic  minerals  (pyroxene,  olivine,  akermanite). 

Perolic.  Extremely  olic,  having  olic  minerals  (olivine,  akermanite)  extreme  over  the  pyric 
minerals  (pyroxenes). 

Perpolic.  Extremely  polic,  having  polic  minerals  (pyroxenes,  olivine,  akermanite)  extreme  over 
the  mitic  minerals  (magnetite,  hematite,  ilmenite,  etc.). 


478 


CHEMICAL  ANALYSES  OF  IGNEOUS  HOCKS. 


Perpotassic.  Extremely  potassic,  having  K20  extreme  over  Na20. 

Perpyric.  Extremely  pyric,  having  the  pyric  minerals  (pyroxenes)  extreme  over  the  olic 
minerals  (olivine,  abermanite). 

Perquaric.  Extremely  quaric,  having  normative  quartz  extreme  over  normative  feldspar. 
Persalic.  Extremely  salic,  having  salie  minerals  extreme  over  the  femic. 

Persodic.  Extremely  sodic,  having  Na20  extreme  over  K20. 

Pertilic.  Extremely  tilie,  having  tilic  minerals  (ilmenite,  titanite,  etc.)  extreme  over  the  hemic 
minerals  (magnetite,  hematite). 

Pol.  Syllable  mnemonic  of  the  femic  silicates,  pyroxene  and  olivine,  including  akermanite. 
Polic.  Characterized  by  the  presence  of  the  femic  silicates. 

Polmitic.  Having  equal,  or  nearly  equal,  amounts  of  the  polic  and  mitic  minerals. 

Pre-.  Prefix  indicating  the  predominance  of  one  factor  over  another  in  a  ratio  >  f. 

Prealkalic.  Predominantly  alkalic.  Of  salic  minerals  when  KjO'+Na-O7  predominates  over 
CaO/;  of  femic  minerals  when  K20//-f-Na20//  predominates  over  MgO+FeO+CaO//. 

Precalcic.  Predominantly  calcic.  Of  salic  minerals  when  CaO/  predominates  over  K.,0/-f  Na.,0//; 
of  femic  minerals  when  CaO''  predominates  over  MgO-f  FeO. 

Predominant.  Said  of  a  factor  which  preponderates  over  another  in  a  ratio  greater  than  *.  Used 
in  connection  with  a  threefold  comparison. 

Prepotassic.  Predominantly  potassic,  having  K20  predominant  over  Na20. 

Presodic.  Predominantly  sodic,  having  Xa20  predominant  over  K20. 

Pyr.  Syllable  mnemonic  of  pyroxenes. 

Pyric.  Characterized  by  the  presence  of  normative  pyroxene. 

Pyrolic.  Having  equal  or  nearly  equal  amounts  of  normative  pyroxene  and  olivine  or  akermanite. 

Q. 

Quar.  Syllable  mnemonic  of  quartz. 

Quardofelic.  Having  felic  minerals  (feldspar)  dominant  over  normative  quartz. 

Quarfelic.  Having  equal,  or  nearly  equal,  amounts  of  normative  quartz. 

Quaric.  Characterized  by  the  presence  of  normative  quartz. 

R. 

Rang.  A  division  of  order  based  on  the  character  of  the  chemical  bases  in  the  preponderant 
group  of  standard  minerals. 

Rating.  The  relative  standing  of  an  analysis,  based  on  its  accuracy  and  completeness. 

S. 

Sal.  Syllable  mnemonic  of  the  silico-aluminous  nonferromagnesian  group  of  standard  minerals, 
including  quartz,  feldspars,  lenads,  corundum,  and  zircon. 

Salfemic.  Having  salic  and  femic  minerals  in  equal,  or  nearly  equal,  amounts. 

Salic.  Having  the  characters  of,  or  belonging  to,  the  first  (sal)  group  of  standard  minerals. 
Section.  Subdivision  of  any  of  the  other  taxonomic  divisions  from  class  to  subgrad. 

Standard  mineral.  One  of  the  minerals  or  mineral  molecules  selected  to  express  the  chemical 
composition  of  an  igneous  rock. 

Standard  mineral  composition.  The  composition  of  a  rock  expressed  in  terms  of  the  standard 
minerals  as  calculated  from  the  chemical  analysis. 


GLOSSARY  OF  NEW  TERMS. 


479 


Subclass.  Division  of  class  based  on  certain  broad  chemical  differences  in  the  preponderant 
standard  mineral  group. 

Subgrad.  Division  of  grad,  based  on  the  chemical  character  of  the  minerals  used  in  forming  the 

grad. 

Suborder.  Division  of  order,  based  on  certain  chemical  differences  in  the  preponderant  mineral 
group. 

Subrang.  Division  of  rang,  based  on  the  character  of  the  chemical  bases  in  the  preponderant 
mineral  subgroup  used  in  forming  rang. 

Superior.  Adjective  applied  to  analyses  of  the  first  three  ratings;  that  is,  either  excellent,  good, 
or  fair. 

T. 

Til.  Syllable  mnemonic  of  the  titaniferous  femic  minerals,  titanite  and  ilmenite,  including 
perofskite  and  rutile. 

Tildohemic.  Having  hemic  minerals  (magnetite,  hematite)  dominant  over  the  tilic  minerals 
(ilmenite,  titanite,  etc.). 

Tilhemic.  Having  equal,  or  nearly  equal,  amounts  of  hemic  and  tilic  minerals. 

Tilic.  Having  the  characters  of,  or  pertaining  to,  the  titaniferous  femic  minerals. 

Type.  A  rock  which  forms  a  standard  by  which  to  indicate  identity  in  norm,  mode,  and  texture, 
or  a  close  approximation  to  identity. 

V. 

Varietal.  Having  the  character  of,  or  producing,  a  variety  of  a  mode. 

Variety.  A  division  of  a  mode,  recognizing  the  presence  of  subordinate  mineral  components. 


PREFATORY  NOTE  TO  INDEXES. 


For  the  information  of  those  who  may  use  the  following-  indexes  a  few  words 
of  explanation  are  here  presented. 

It  must  be  borne  in  mind,  both  here  and  throughout  the  tables,  that  the 
opposite  pages  belong  and  are  to  be  considered  together.  Reference  to  an  even- 
numbered  page  implies,  therefore,  the  opposite  odd-numbered  one,  and  vice  versa. 
Similarly  the  divisions  of  the  new  system,  and  the  names,  although  placed  for 
typographical  reasons  on  one  page  or  the  other,  apply  to  both.  Thus,  liparase 
on  page  lid  and  liparose  qn  page  115  are  to  be  taken  together. 

It  will  be  convenient  to  remember  that  Part  I,  which  contains  the  superior 
analyses,  ends  with  page  369,  while  Part  II,  in  which  are  found  the  inferior 
analyses  and  those  of  tuffs,  etc.,  begins  with  page  372.  This  is  shown  in  the 
indexes  by  semicolons,  marking  the  division. 

In  the  index  to  old  names,  mineral  qualifiers  have  been  omitted  in  most 
cases,  especially  when  the  mineral  name  indicates  no  special  magmatic  character. 
Thus  biotite -andesite,  hornblende-andesite,  and  hypersthene-andesite  are  to  be 
looked  for  under  andesite.  When,  however,  the  mineral  qualifier  indicates  a 
distinctive  magmatic  character  it  will  be  given,  as  in  the  case  of  nephelite- 
syenite,  quartz-basalt,  quartz-diorite,  or  if  its  presence  is  of  special  interest,  as 
in  cordierite-andesite,  analcite-tinguaite.  As  a  rule,  however,  the  small  rock 
groups  are  not  thus  distinguished.  Textural  qualifiers  are  also  usually  omitted, 
as  in  andesite-porphyry,  which  will  be  found  under  andesite,  though  granite- 
porphyry,  diorite-porphyry,  etc.,  are  retained.  Tuffs  will  be  found  under  their 
respective  rocks. 

In  using  this  index  it  must  also  be  borne  in  mind  that  many  synonyms  are 
in  use,  so  that  liparites  may  be  found  under  rhyolite,  dolerites  under  basalt,  etc. 
The  terms  porphyry  and  porphyrite  are  also  frequently  interchanged,  as  usage 
is  not  uniform. 

In  the  index  to  localities  the  primary  arrangement  is  by  countries  and  sepa¬ 
rate  islands,  etc.  Under  countries  the  arrangement  is  by  States  or  provinces, 
etc.  Thus  under  Great  Britain  will  be  found  England,  Ireland,  etc.  This  has 
14128— No.  14—03 - 31  481 


482 


PREFACTORY  NOTE  TO  INDEXES. 


not  been  done  in  the  case  of  small  countries  or  those  represented  by  few  anal¬ 
yses.  In  Germany  a  number  of  well-defined  mountainous  regions  are  given 
separately  when  they  extend  into  more  than  one  province,  as  the  Harz  Moun¬ 
tains.  On  the  other  hand,  the  rocks  of  the  Odenwald,  for  instance,  will  be 
found  under  Hesse,  and  those  of  the  Schwarzwald  and  the  Kaiserstuhl  under 
Baden.  Islands  near  the  coast  of  a  country  to  which  they  belong  are  listed 
separate!}7,  under  the  head  of  the  country,  as  with  the  iEolian  and  Orkney 
Islands.  Colonies  are,  of  course,  given  a  separate  head,  as  with  Algeria.  In 
view  of  the  very  large  number  of  localities,  it  was  not  deemed  expedient  to 
index  the  exact  locality  names.  But  by  comparing  the  indexes  of  either  the 
new  or  the  old  rock  names  with  that  of  localities,  the  reference  to  any  desired 
rock  will  usually  be  readily  found. 


INDEX  TO  TEXT. 


A.  Page. 

Abbreviations,  tables  of .  116-119 

for  names  of  journals,  etc.,  discussed .  71 

Abich,  H.,  cited .  11 

Accuracy  of  analyses,  defined .  19 

Agreement  of  analysis  with  the  mode .  30 

Alkalies,  possible  errors  in  determination  of .  22, 24, 33 

Alumina,  possible  errors  in  determination  of .  21,31,32 

Altered  rocks,  analyses  of .  18 

Analyses,  accuracy  of . 19 

accuracy  of,  a  factor  in  rating .  29-36 

agreement  of,  with  the  mode .  30 

arrangement  of,  in  tables .  46 

reasons  for .  59 

character  of .  13-43 

completeness  of .  23-28 

a  factor  in  rating .  37 

geographical  arrangement  of .  64 

methods  of .  20, 36 

number  of,  of  different  ratings .  66 

numbering  of .  65 

poor  quality  of .  15,  66 

rating  of .  28-38, 65 

representativeness  of .  16-19 

summation  of .  33-36 

tabular  statement  of  number  of . . .  54 

Analyst,  character  of,  discussed .  14, 20, 36 

statement  of,  in  tables .  70 

Andesite,  position  of,  in  new  system .  74 

Anorthosite,  position  of,  in  new  system .  75 

Aplite,  position  of,  in  new  system .  73 

Ashes,  analyses  of,  to  be  found  in  Part  II .  44, 45 

Austin,  M.,  cited .  22 

Average  igneous  rock,  calculation  of .  106-115 

character  of .  108,115 

B. 

Bad,  definition  of,  as  applied  to  analyses .  41 

Barium,  determination  of .  25, 26 

Basalt,  position  of,  in  new  system .  75 

Basanite,  position  of,  in  new  system .  75 

Bischoff,  G.,  cited  . .  12 

Brittleness  of  minerals,  difference  in .  19 

Bunsen,  R.,  theory  of,  mentioned .  12 

C. 

Carbonic  acid,  determination  of .  28,37 

Center  points,  calculation  of .  81-92 

definition  of .  82 

of  perfemane,  calculation  of .  88 

tabular  statement  of .  97 

of  persalane,  calculation  of .  84 

tabular  statement  of .  93 


Page. 


Chlorine,  correction  for .  34 

determination  of .  25, 37 

Chromium,  determination  of . 1 .  26,37 

occurrence  of .  25 

Clarke,  F.  W.,  cited . 25,27,106 

Classification,  defects  in  present  system  of .  46, 62 

quantitative,  adopted  in  present  work .  59 

correlation  of,  with  qualitative .  72-81 

description  of .  47 

reasons  for  adoption  of .  59 

tabular  statement  of .  54-59  ' 

Columbia  University,  acknowledgments  to  librarian 

of .  9 

Constituents,  main,  determination  of .  24 

minor,  determination  of .  25 

statement  of,  in  tables,  discussed .  67 

Contradictions  to  principles,  apparent  instances  of  . . .  63 

Cordier,  investigations  of,  referred  to .  11 

Correlation  of  quantitative  and  qualitative  systems  of 

classification .  72-81 

Correspondence  of  norm  and  mode .  69 

Cossa,  cited .  32 

Cross,  Whitman,  acknowledgments  to .  9 

cited .  11,31,46 

letter  of  transmittal  by .  5 

Cross,  Iddings,  Pirsson,  Washington,  cited .  7. 

31, 44, 47, 63, 69, 109 

D. 

Dacite,  position  of,  in  new  system .  74 

Diabase,  position  of,  in  new  system .  75 

Diorite,  position  of,  in  new  system .  74 

Dittrich,  M.,  cited .  28 

Durocher,  liquation  hypothesis  of .  13 

E. 

Errors,  possible,  in  analytical  work .  20-23, 30 

examples  of  .  31-33 

influence  of,  in  selection  of  analyses .  43 

Essexite,  position  of,  in  new  system .  75 

Europe,  division  of,  into  zones . . .  64 

Evidence  of  accuracy  of  analyses,  external .  36 

indirect .  36 

internal .  30-36 

Excellent,  definition  of,  as  applied  to  analyses .  41 

P. 

Fair,  definition  of,  as  applied  to  analyses .  41 

Ferric  oxide,  possible  errors  in  determination  of . 21, 22 

Ferrosilite,  use  of  term .  90 

Ferrous  oxide,  possible  errors  in  determination  of  . . . .  21, 22 
Fifth  rate,  definition  of,  as  applied  to  analyses .  41 

483 


484 


INDEX  TO  TEXT. 


Page. 

First  rate,  definition  of,  as  applied  to  analyses .  41 

Fluorine,  correction  for .  34 

Fourth  rate,  definition  of,  as  applied  to  analyses .  41 

G. 

Gabbro,  position  of,  in  new  system .  75 

Geographical  arrangement  of  analyses,  discussion  of..  64 

Gooch,  F.  A.,  cited .  22 

Good,  definition  of,  as  applied  to  analyses .  41 

Granite,  position  of,  in  new  system .  73 

Granodiorite,  position  of,  in  new  system .  74 

Groundmass,  analyses  of .  29 

H. 

Harker,  A.,  cited .  106 

Harrison,  J.  B.,  acknowledgments  to .  9 

Hibsch,  J.  E.,  cited .  32 

Hillebrand,  W.  F.,  acknowledgments  to .  10 

cited .  14,15,21,22,25,34,35 

I. 

Iddings,  J.  P.,  acknowledgments  to .  10 

term  ferr-osilite  suggested  by .  90 

Ijolite,  position  of,  in  new  system .  75 

Inferior,  definition  of,  as  applied  to  analyses .  42 

Igneous  rock,  average,  calculation  of .  106-115 

character  of .  108,115 

Iron  oxides,  errors  in,  affecting  selection  of  analyses. .  43 

errors  possible  in  determination  of . 21, 22, 24, 32 


importance  of  separate  determination  of _  24, 34, 37, 43 

K. 


Kemp,  J.  F.,  acknowledgments  to .  9 

cited  .  .  32, 67 

Klein,  C.,  cited .  33 

L. 

Lang,  H.  O.,  cited . . .  32 

Lime,  possible  errors  in  determination  of .  22 

salic,  attention  called  to,  in  calculations .  60 

Lithium,  determination  of  . . . .  27 

Loewinson-Lessing,  cited .  50 

Locality,  statement  of,  in  tables . 1 _  69 

Loss  on  ignition .  28, 37 

M. 

Magmas,  distribution  of .  100, 102 

Magnesia,  possible  errors  in  determination  of...  21,22,31,32 

Main  constituents,  determination  of .  24 

behavior  of,  in  analysis .  27 

Manganese,  determination  of .  24, 27 

errors  possible  in  determination  of . . . ._. .  23, 33 

small  amount  of,  in  igneous  rocks .  27 

Material,  amount  of,  for  analysis .  18 

Melilite-basalt,  position  of,  in  new  system .  75 

Meteorites,  analyses  of,  omitted .  •  9 

position  of,  in  new  system .  81 

Microscopical  examination,  need  of .  19,25 

Minor  constituents,  determination  of .  25 

Mitscherlich  method,  unreliability  of .  21 

Mode,  agreement  of  analysis  with .  30 

calculation  of  chemical  composition  from .  30 

correspondence  of,  with  the  norm .  69 

Molecular  ratios,  statement  of,  in  tables .  67 


Page. 

Molybdenum,  occurrence  of .  25 

Monzonite,  position  of,  in  new  system .  74 

N. 

Name  roots,  number  of,  discussed .  50 

Names,  number  of,  discussed .  49 

Nephelite-syenite,  position  of,  in  new  system .  74 

Neues  Jahrbuch,  references  to  analyses  in . . .  70 

Nickel,  determination  oi . , .  .  26, 37 

occurrence  of .  25 

Nomenclature,  objections  to  use  of  new,  discussed  ...  51 

of  quantitative  system,  described . 48 

tabular  statement  of .  54 

Nomenclatures,  old  and  new,  compared .  49 

Norite,  position  of,  in  new  system .  75 

Norm,  calculation  of .  31 

correspondence  of,  with  mode .  69 

statement  of,  in  tables .  68 

North  America,  division  into  zones .  64 

Novices,  analytical  work  of .  14, 20 

O. 

Oxygen-ratio,  employment  of,  in  correlation  of  rock 

analyses .  12 

P. 

Page  number,  reference  to,  explained .  70 

Parts,  division  of  tables  into,  discussed .  43-45 

Perfemane,  calculation  of  center  points  of .  88 

tabular  statement  of  center  points  of .  97 

Peridotite,  position  of,  in  new  system .  75 

Persalane,  calculation  of  center  points  of .  84 

tabular  statement  of  center  points  of .  93 

Phonolite,  position  of,  in  new  system .  74 

Phosphoric  acid,  determination  of .  25, 26, 37, 38 

errors  possible  in  determination  of .  21 

Pirsson,  L.  V.,  acknowledgments  to .  10 

cited . 14,21 

Poor,  definition  of,  as  applied  to  analyses .  41 

Pyroxenite,  position  of,  in  new  system . . .  75 

Q. 

Quantitative  and  qualitative  classifications,  correla¬ 
tion  of .  72-81 

Quartz-diorite,  position  of,  in  new  system .  74 

Quartz-porphyry,  position  of,  in  new  system .  73 

R. 

Rating  of  analyses,  definition  of .  28 

method  adopted  in  tables,  description  of .  38-43 

results  of . . .  65 

symbols  employed  in,  explained .  39-41 

tabular  statement  of .  41-66 

Ratios,  molecular,  statement  of,  in  tables .  67 

Reed,  S.  A.,  cited .  18 

Reference,  statement  of,  in  tables .  70 

Remarks,  column  of,  discussed . 71 

Rhyolite,  position  of,  in  new  system .  73 

Rock  mass,  character  of .  16 

uniformity  of .  17 

Rocks,  distribution  of,  in  quantitative  system .  61 

Roth,  J.,  cited .  7,12,46 

theory  of  differentiation  of,  mentioned .  13 

S. 

Second  rate,  definition  of,  as  applied  to  analyses .  41 

Sedimentary  rocks,  analyses  of,  omitted .  8 


INDEX  TO  TEXT 


485 


Page. 

(Serpentine,  analyses  of,  omitted .  8 

Silica,  possible  errors  in  determination  of .  21 

Smith,  Lawrence,  method  of,  for  determining  alkalies.  22 

Specimen,  selection  of .  16 

size  of .  18 

Stokes,  H.  N.,  cited .  21 

Strontium,  determination  of .  25,27 

Students,  analytical  work  of .  14, 20 

Sulphur,  correction  for .  34 

determination  of .  26, 37 

Sulphuric  acid,  determination  of .  26,37 

Summation,  allowable  limits  of .  34 

errors  in  analysis  indicated  by .  68 

high,  discussed .  35 

low,  discussed .  34 

Superior,  definition  of,  as  applied  to  analyses .  42 

Syenite,  position  of,  in  new  system .  73 

T. 

Teall,  J.  J.  H.,  cited .  103 

Tephrite,  position  of,  in  new  system .  75 

Theralite,  position  of,  in  new  system .  75 

Third  rate,  definition  of,  as  applied  to  analyses .  41 

Titanium,  determination  of .  23,25,26,37,38 

Trace,  definition  of .  24 

Trachyte,  position  of,  in  new  system .  73 

Tuffs,  analyses  of,  to  be  found  in  Part  II .  44, 45 


U. 

United  States  Geological  Survey,  acknowledgments  to 

librarian  of . J .  9 


Page. 

United  States  Geological  Survey,  analyses  published 


by .  7,27,66 

reference  to  bulletins  of,  explained .  70 

work  of  chemists  of .  20, 25, 66 

Urtite,  position  of,  in  system .  75 

V. 

Vanadium,  determination  of .  26 

occurrence  of .  25 


W. 


Walcott,  C.  D.,  acknowledgments  to .  10 

Washington,  H.  S.,  cited . . . 21,68 

Water,  determination  of .  28, 37, 67 

Williams,  J.  F.,  cited .  33 


Y. 


Yale  University,  acknowledgments  to  librarian  of . . . .  9 

Year  of  publication,  use  of .  70 

Years  included  in  the  collection .  7 

Z. 

Zaleski,  S.,  cited .  19 

Zirconium,  determination  of .  25, 37 

occurrence  of .  25 

Zirkel,  F.,  system  of,  adopted  for  Part  II .  45 


INDEX  TO  NEW  ROCK  NAMES  IN  PART  I 


A. 

Absarokose . . 

Adamellose . 

Adirondackare . . 

Adirondackase . 

Adirondackiase . 

Adirondackore . 

Akerose . . 

Alaskase . 

Alaskose . 

Albanase . 

Albanose . 

Almerase . . 

Almerose . 

Alsbacbase . 

Alsbachose . 

Amadorose . 

Amiatose . 

Andase . . . 

Andose . .  . 

Argeinose . 

Arkansose . 

Atlantare . 

Austrare . 

Auvergnase . 

Auvergnose . 

Avezaciase . 

Avezacose . 


Baltimorase. .. 
Baltimoriase . . 
Baltimorose. . . 

Bandase . 

Bandose . 

Beemerose 
Beerbachose  . . 
Belcherose 

Belgare . 

Bergenase . 

Bergeniare.... 

Bergeniase 

Bergenose . 

Bohemare..... 
Borolanose.... 
Borsowase  .... 
Borsowose  .... 
Braccianose... 
Brandbergiase 
Brandbergose . 
Britannare.... 


B. 


Page. 

315 

223-225 

365 

364 

364 

365 
261-265 
124-130 
127-129 
350-352 

351 

218 

219 

130-138 

137 

193 

183-185 

264-284 

273-283 

357 

307 

311 

221-251 

328- 336 

329- 337 

364 

365 


366 

366 

367 

246- 250 

247- 251 
207 
285 
355 

123-125 

364 

365 

364 

365 
351-353 

297 

216 

217 

305 

358 

359 
143-193 


Camptonose... 

Canadare . 

Canadase . 

Caroliniare  ... 

Casselase . 

Casseliase . . 

Casselose . 

Cecilose . 

Champlainase 

Champlainiase 

Champlainore 

Chotase . 

Chotose . 

Ciminose . 

Coloradase .... 

Columbare . 

Cookose . 

Corsase . 

Cortlandtase . . . 
Cortlandtiase . . 
Cortlandtose... 

Covose . . 

Custerose . 


Dacase . . . 
Dacose 
Dargase . . 
Dellenose 
Dofemane 
Dosalane. 
Dunase  . . . 
Duniase.. 
Dunose  .. 


Essexase 

Essexose 

Etindase 

Etindose 


F. 

Fergusose . 

Finnare . 


Gallare 
Germanare 
Gordonase . 
Grorudose  . 


G. 


Page. 

319-325 

193-207 

206 

367 

362 

362 

363 
367 

364 

364 

365 

350 

351 
255 

182-192 

125-143 

355 
292 

356 

356 

357 
353 
357 


222-226 

225-227 

122 

157-159 

354-364 

218-308 

368 

368 

369 


296-298 

299 

348-350 

351 


293 

353 


313-339 

251-293 

220 

221 


C. 

Campanare . 

Camptonase . . . 

486 


H. 


305-307  Harzose 
314-328  Hessase 


229-231 

286-292 


INDEX  TO  NEW  ROCK  NAMES  IN  PART  I 


487 


Page. 

Hessose .  287-293 

Highwoodose .  251 

Hispanare .  219-221 

Hungarare .  355-357 

Hungariare .  355-357 

I. 

Iivaarose .  353 

Ijolase . 352 

Ijolose .  353 

Ilmenose .  251 

Indare .  217 

Italare .  303-307 

J. 

Janeirose .  303 

Judi  those .  293-295 

K. 

Kallerudose .  155-157 

Kalteniase .  362 

Kaltenose .  363 

Kamerunare . 347-351 

Kamerunase .  346-348 

Kamerunose .  349 

Kedabekase . 1 .  336-338 

Kentallenose .  317 

Kilauase .  312-314 

Kilauose .  315 

Kyschtymase .  216 

L. 

Labradorase .  204 

Labradorose .  205 

Lamarose .  313 

Lappare .  307 

Lassenose .  173-183 

Laugenase .  214 

Laugenose .  215 

Laurdalase . j.  292-296 

Laurdalose  . .. .  295-297 

Laurvikose .  201-203 

Lebachose .  143 

Lherzase .  356 

Lherziase .  356 

Lherzose .  357 

Limburgase . : .  342-344 

Limburgose .  343-345 

Liparase . 142-156 

Liparose . 145-153 

Lujavrase .  302-304 

Lujavrose .  303-305 

M. 

Madupose .  353 

Magdeburgose .  125 

Malignase .  346 

Malignose . . . 347 

Maorare .  367-369 

Maoriare .  369 

Mariciase .  366 

Maricose .  367 

Mariposose .  183 

Mariupolose .  213 

Marquettiase .  360 

Marquettose .  361 

Marylandiare .  367 

Mazarunose .  205 


Page. 

Miaskase .  206-212 

Miaskose .  207-213 

Mihalose . 131-133 

Minnesotase .  354 

Minnesotiare .  355 

Minnesotiase .  354 

Monchiquase .  340-342 

Monchiquose .  341-343 

Monzonase .  254-264 

Monzonose .  255-259 

N. 

Nordmarkase .  192-198 

Nordmarkose .  195-197 

Norgare .  293-303 

Novangose .  157 

O. 

Omeose .  143-145 

Orendase . 312 

Orendose .  313 

Ornose .  327-329 

Ourose .  343 

P. 

Pantellerase .  220 

Pantellerose .  221 

Paolase .  358-360 

Paoliare .  359-361 

Paoliase .  360 

Paolose .  361 

Perfemane .  366-368 

Persalane .  122-216 

Phlegrose .  193-195 

Placerose .  245 

Portugare .  339-347 

Prowersose .  313 

Pulaskase .  198-204 

Pulaskose .  199-201 

Pyreniare .  357 

R. 

Riesenase .  138-142 

Riesenose . 139-141 

Rockallase .  310 

Rockallose .  311 

Rossweinose . 357 

Russare .  207-215 

S. 

Sagamose .  247 

Salemase .  300-302 

Salemose .  301 

Salfemane .  310-352 

Scotare .  359-363 

Shonkinose .  341 

Shoshonose .  267-271 

Siberare .  217 

Sitkose . 219 

Sverigare .  365 

T. 

Tasmanare .  215 

Tehamose . 133-135 

Texase . 360-362 

Texiare .  361-363 


488 


INDEX  TO  NEW  ROCK  NAMES  IN  PART  I 


Page. 

Tonalase .  226-244 

Tonalose .  231-246 

Toscanase .  156-182 

Toscanose . - .  159-173 

Tuolumnose . 199 

U. 

Umtekase .  250-252 

Unite  kose .  253 

Uralase . ! .  216 

Uralose .  217 

Urtase .  306 

Urtose .  307 

Uvaldiase .  360-362 

Uvaldose .  361-363 

V. 

Vaalare .  311 

Vaalase .  310 

Vaalose .  311 

Valbonnaise .  358 

Valbonnose .  359 

Varingase .  218 

Varingose .  219 


Page. 

V  enanziase .  356 

Venanzose . 357 

Vesuvase .  306 

Vesuvose . 307 

Viezzenase .  212-214 

Viezzenose .  213-215 

Vuleanose . . . 143 

Vulsinose . 199 

Vulturase .  304 

Vulturose .  305 

W. 

Websterase .  366 

Websteriase .  366 

Websterose . 367 

Wehrlase .  354-356 

Wehrliase .  354 

Wehrlose .  355 

Westphalose .  131 

Wyomingase .  338 

Wyomingose .  339 

Y. 

Yellowstonose .  185-193 

Yukonose .  139 


INDEX  TO  OLD  ROCK  NAMES  IN  DARTS  I  AND  II. 


A.  Page. 

Absarokite .  313,315,317 

Acmite-trachyte . , .  197,209 

Adamellite .  191 

Aegirite-granite .  167 

Aegirite-trachyte .  197, 209 

Akerite .  159,167,195,  201,257,263;  389 

Alaskite .  127,149,165,  177 

Albite-diorite . , . .  283 

Albite-porphy  ri  te . 157 

Albitophyre .  391 

Alboranite .  425 

Aleutite .  277 

Alnoite .  467 

Alsbachite .  137, 157 

Amygdaloid .  437 

Analcite-basalt .  339, 341 

Anal  cite-diabase .  305 

Analcite-tinguaite .  207,339 

Anamesite .  285;  451,453 

Andendiorite  . . 263;  411 

Andengranite  . 179;  375 

Andesite .  123, 141, 149, 

151, 157, 163, 169, 175, 177, 183, 185, 187, 189, 191 , 193, 
197, 201, 203, 205, 225, 227, 229, 231, 233, 235, 237, 239, 
241, 243, 245, 247, 249, 251, 253, 257, 261, 263, 265, 267, 
269, 271, 275, 277, 279, 281, 283, 285, 289, 301, 311, 313, 
315, 317, 321, 329, 353;  419, 421, 423, 425, 427, 429, 431 

Andesite-basalt .  285 

Andesite  tuff .  419, 427, 429 

Anorthite-andesite . 421 

Anorthosite .  205,207,287;  431 

Apatite-syenite .  313 

Aplite . - .  127, 129, 

137, 139, 141, 145, 153, 157, 161, 163, 165, 173, 183, 219  ,  377, 379 

Aporhyolite .  127,155 

Ariegite .  335,337,339,347 

Arkite .  307 

Augite-peridotite .  359 

Augite-syenite .  199, 201, 203, 205, 251, 271 

Augitite .  315,343,345 

Average  rock .  231, 241 

Avezacite . 365 


B. 


Banakite .  201,255,257,267 

Banatite . . .  407 

Basalt .  241, 249, 257, 263, 265, 267, 269, 275, 277, 279, 281, 

283, 285, 289, 291, 293,  301, 303, 311, 313, 315, 317, 319, 

321 , 323, 325, 327, 329, 331 , 333, 335, 337, 339, 341 , 343, 
345, 347, 351, 353, 355, 361 ;  447, 449, 451, 453, 455, 457 
Basalt  glass .  275,325;  449,451,457 


Page. 

Basalt  tuff .  451 , 453, 455 

Basaltoid .  455 

Basanite .  299,301,303,347;  457 

See  also  Leucite,  Nephelite-basanite. 

Beerbachite .  285,329 

Belugite .  289 

Beresite .  375 

Biotite-ijolite . .  307 

“  Biotite-plagiocla.se  rock” .  433 

Biotite-tinguaite .  197 

Boninite . , .  431, 469 

Borolanite .  297 

Bostonite .  145, 147, 195, 197, 199, 257;  393 


C. 

Camptonite. .  293, 301, 317, 319, 321, 323, 329, 335, 339, 343, 345;  417 


Camptonite,  rock  allied  to .  245, 277 

Cancrinite-syenite .  303 

Carmeloite  . . . .  299;  419 

Charnockite .  125;  381 

Ciminite .  255,261;  399 

Comendite .  153;  383 

Cordierite-andesite .  219;  425,427 

Cordierite-norite .  309;  435 

Cordierite-vitrophyrite .  427 

Corsite .  431 

Cortlandtite .  355,357 

Corundum-anorthosite .  207 

Corundum-pegmatite .  217 

Corundum-syenite .  217 

Covite .  297 

Cumberlandite .  469 


D. 


Dacite  . .  123,131,137,153,167,175,177,179,181, 

185, 187, 189, 191, 193, 203, 225, 227, 239, 243, 245, 249;  417, 419 

Dacite,  secretion  in .  289;  421 

Dacite  tuff .  417 

Dellenite .  x5/,169 

Diabase .  205, 231, 235, 245, 249, 

265, 273, 275, 281, 285, 287, 291, 293, 311, 315,317,319,321,323, 
325, 327, 329, 331, 333, 335, 337, 343, 357;  437, 439, 441,443, 445 

Diabase-aphanite .  443, 445 

Diabase-gabbro .  291 

Diabase  glass .  327, 329 

Diabase  tuff .  441 

“Dike  rock” . 219,245 

Diorite .  183, 187, 205, 219, 223, 225, 227, 229, 233, 235, 239, 243, 

245, 247, 249, 261 , 263, 267, 269, 273, 275, 279,281,283,285,287, 
289, 291, 293, 301, 303, 311, 321, 327, 329, 331, 333,335;  409,411 

489 


INDEX  TO  OLD  ROCK  NAMES  IN  PARTS  I  AND  II 


490 


Page. 

Diorite-porphyry .  175,18V, 

189, 205, 223, 229, 233, 243, 261, 271, 273, 279, 299, 317;  409, 411 

Diorite,  segregation  in .  261 

Ditroite .  213 

Dolerite. .  265, 269, 271, 281, 299, 301, 321, 323, 359, 363;  449,451,453 


Dunite .  369;  471, 473 

Durbachite .  255 


E. 


Eorhyolite . 

Epidiabase . 

Epidiorite . 

Essexite . 

Esterellite . 

Esterellite,  inclusion  in 

Euktolite . 

Eurite . 


.  181 

.  443 

.  321,333 

271,299,323,335,343;  411,451 

.  423,425 

.  433 

.  357 

.  375,385 


F. 


Farrisite .  349 

Felsite .  123, 135, 195, 219, 245, 247;  385, 387, 419 

Felsite-porphyry . 151 

Felsite  tuff .  385 

Felsophyre .  159;  381, 395 

Fourchite .  333,459 

Foyaite .  195, 197, 207, 211, 215, 253, 293, 295, 343 


G. 


Hornblende-diabase  .. 
Hornblende-gabbro  ... 
Hornblende-peridotite 
Hornblende-picrite . . . 

Hornblendite . 

Hyperite . 

Hypersthenite . 

Hysterobase . 


Page. 


.  437 

285, 287, 301, 319, 329, 347;  435, 439 

.  357 

.  333,355 

.  345,359 

.  435 

. 469 

.  443 


I. 


Ilmenite-norite 

Ijolite . 

Iron  ore . 


.  365 

307,347,353;  471 
.  365 


J. 

Jacupirangite .  361 

K. 


Kedabekite . . 

Kentallenite _ 

Keratophyre.... 
Keratophyre  tuff 

Kersantite . 

Kimberlite . 

Kugel  in  granite. 


.  339 

.  317 

. .  131,145,147,157,181,205,259;  393,395 

.  393,395 

227, 251, 259, 265, 269, 271, 281, 315, 317;  411, 413 

.  473 

.  409 


Kulaite 


299;  459 


Kullaite .  441 

Kyschtymite .  217 


Gabbro .  199,221,223,229,231,247,273,275,277, 

279, 285, 287, 289, 291, 293, 301,  303, 311, 317, 319, 323, 325, 
329, 331, 333, 335, 337, 343, 347, 355, 357;  391, 431, 433, 435 

Gabbro,  basic  schliere  in .  369 

Gabbrodiabase .  343 

Gabbrodiorite .  329, 331, 337 ;  431 

Gabbro-porphyry .  269, 277, 319 

Gabbro-pyroxenite .  359 

Gabbro-syenite .  283 

Garnet-norite . 435 

Gauteite .  259 

Granite .  125, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 


151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 
179,181, 183, 185, 187, 189, 191,  193,  215, 219. 221, 225, 227, 
229, 231, 241 , 245, 249, 265, 287;  373, 375, 377, 379, 381, 409 


Granite,  inclusion  in .  227, 263 

Granite,  nodule  in .  123;  409 

Granite,  schliere  in .  139,143,231 

Granite,  segregation  in .  261, 323 


Granitite.  See  Granite. 


Granite-porphyry  . . .  129, 139, 141, 145, 153, 161, 163, 167, 173, 187 

Granodiorite .  141, 179, 183, 189, 229, 235, 237;  407 

Granophyre .  129, 151,155, 183;  375 

Granulite .  129, 293, 335 

Greisen .  123 

Grorudite . 151,155,219,221 


H. 


Halleflinta . 

Hauyne-phonolite . 

Hauyne-tephrite . 

Hauynophyre  . 

Hauynophyre  tuff . 

Hedrumite . 

Heronite . . 

Heumite . 

“  Hornblende-augite  rock” 
Hornblende-basalt . 


.  143;  381 

.  405 

.  265; 463, 465 

....  305, 349, 351; 465, 467 

.  467 

.  253,295 

.  207 

.  253,299,349 

.  471 

275,299,301,333,365;  459 


L. 

Labradorite .  433,449 

Labradorite-porphyry . 249,269,281;  417 

‘  ‘  Labradorite  rock  ” .  205, 253 

Lamprophyre  .  249,255,277,313,317,329 

Lapilli .  429 

Latite .  165,257,269 

Laurdalite .  295, 297, 299 

Laurvikite .  203 

Lava .  155,251,271,291,301,321;  429,449,465,467 

Lestiwarite .  197 

Leucite-absarokite . 313 

Leucite-banakite .  267 

Leucite-basalt .  301,341,347;  465 

Leucite-basanite .  305,307,315,341;  461,463,465 

Leueite-granite-porphyry .  199 

Leucite-phonolite . . .  207,211,255,321;  405 

Leucite-syenite .  293,307,341;  405 

Leucite-tephrite . 271, 283, 297, 305, 315, 343;  459, 461, 463, 465 

Leucite-tephrite  tuff .  461 

Leucite-tinguaite . ’. .  207, 293, 295, 303 

Leucite-trachyte .  199, 251, 255;  405 

Leucitite .  305,307,311,351;  461,463 

Leucitite  tuff .  463 

Leucitophyre .  303,341;  405,461 

Leucophyre . 443 

Leucotephrite .  461 

Lherzolite .  357,367,369  ;  471 

Limburgite .  283, 337, 343, 345, 347, 355;  469 

Lindoite .  151 

Liparite .  127, 133, 135, 137, 139, 

143, 153, 155, 167, 171, 173, 179, 181, 195, 221;  385, 387 

Liparite  tuff .  389 

Litchfieldite . 195 

Lithionite-granite .  129,153,169;  377 

Luciite .  285,291 

Lujavrite .  253, 295, 303, 305 

Lujavrite,  schliere  in .  339 


INDEX  TO  OLD  ROCK  NAMES  IN  PARTS  I  AND  II 


491 


M. 

Madupite . 

Maenaite . 

Magma-basalt . 

M  agnetite-gabbro . 

Magnetite-spinellite . 

Malchite . 

Malignite . 

Mariupolitc . . 

Melaphyre . 

Melaphyre  tuff . . 

Melilite-basalt . 

Melilite-monchiquite . . 

Melilite-pyroxene  rock . 

Metabasalt . . . 

Metadiorite . 

Metarhyolite . 


Page. 

.  353 

.  393 

.  283 

.  483 

.  £69 

.  241,329;  425 

.  347 

.  199,213 

...  271,281,323;  445,447 

.  445 

351,359,361,363,365;  471 

.  467 

.  467 

.  265,285,331;  451 

.  411 

.  383 


Miaskite .  211;  401 

Mica-basalt .  257,333 

Mica-diabase .  293 

Mica-hornblendite .  359 

Mica-peridotite .  363;  469 

Mica-tinguaite .  197,295 

Mica-trachyte .  255 

Microdiorite .  335,411 

Microgranite .  131,167;  375,377 

M  icrotonalite .  411 

Minette .  255,263,265;  397 

Missourite . 355 

Miyakite .  429 

Monchiquite .  333,339,341,343,349,351;  459 

Mondhaldeite .  271 

Monzonite .  223,229,255,259,267,275,277,297,317;  391 

Monzonite,  gabbroitic  facies  of .  235 


N. 


Natrolite-phonolite .  405 

Nephelinite .  303, 305, 349, 353;  459 

Nephelite-basalt .  305,341, 

345, 349, 351, 357, 359, 361, 363  ;  457, 459 

Nephelite-basanite .  301,323,335,343,345,353;  459 

Nephelite-felsite .  297 

Nephelite-porphyry .  215,297,307;  403,467 

Nephelite-syenite .  195, 197, 199, 201, 207, 211, 

213, 215, 253, 263, 295, 297, 305, 353, 361;  401 

Nephelite-syenite-porphyry .  215 

Nephelite-syenite,  segregation  in .  349 

Nephelite-tephrite .  283,315,343;  457 

Nevadite .  141,149;  383 

Nordmarkite .  159,171,195,197,203;  391 

Norite .  273,293,309,319,331,337,355,367;  433,435 

Nosean-leucite-tephrite .  283 

Nosean-sanidinite .  215 


O. 

Obsidian .  127, 137, 149, 151, 153, 155, 157, 165, 

171, 173, 175, 179, 181,195. 219, 327;  385, 387, 389, 397, 399, 465 

Odinite .  257 

Oligoclase  rock . 179 

Olivine-andesite .  353;  425, 431 

Olivine-basalt  (cf.  basalt) .  289,329,355;  447 

Olivine-diabase .  289, 311, 325, 331, 337;  437, 439, 441, 443, 445 

Olivine-diallage  rock .  474 

Olivine-gabbro .  285, 

287, 289, 293, 325, 333, 335, 343, 355, 359;  391, 433, 435 

Olivine-laurdalite .  297 

Olivine-melaphyre .  445,447 

Olivine-monzonite .  317;  391 


Page. 

Olivine-norite .  293,433,435 

Olivine-syenite .  325 

Olivine-trachyte .  271;  399,401 

“  Oolitic  rock  ”  .  465 

Ore,  titaniferous  iron .  365 

Orendite .  313 

Ornoite .  327 

Orthoolase-basalt .  267 

Orthoclase-gabbro .  273, 319 

Orthoclase-gabbro-diorite .  275 

Orthofelsite .  135 

Orthophyre .  391,393 

Ouachitite .  349;  459 


P. 


Paisanite .  145, 147, 153 

Palagonite .  453,457 

Pantellerite .  147, 219, 311 

Pegmatite . 125,377 

Pele’s  hair .  325,337 

Peridotite .  355, 357, 359, 361, 363, 369;  469, 471, 473 

Perlite .  131,163;  387,429 

Phonolite .  195, 

197, 201, 203, 207, 209, 211, 213, 295, 297, 299, 303;  403, 405 

Phonolite,  facies  of . 263 

Phonolite  tuff .  403 

Picrite .  333,355,361,363;  471 

Picrite  porphyry .  471 

Pitchstone .  125, 127, 139, 149, 173, 179;  385, 387, 389 

Plagioclasite .  205 

Porphyrite .  161, 173, 177, 187, 

189, 191, 193, 197, 211, 219, 221, 223, 225, 227, 229, 231, 
233, 237, 239, 241, 243, 245, 247, 251, 259, 261, 263, 265, 
267, 269, 275, 277, 281, 285, 325, 331, 335, 349;  413, 415 

Porphyroid .  241 

Porphyry .  123, 125, 131, 133, 135, 139, 143, 153, 159, 

169, 171, 173, 175, 187, 201, 229, 233, 241;  381, 383, 389, 391, 393 

Porphyry  tuff .  381,393 

Propylite .  241 

Proterobase .  281 

Protogine .  203;  377,379 

Pseudoleucite-syenite .  293 

Pseudodiabase .  327 

Pseudodiorite .  357 

Pulaskite .  193, 195, 197, 199 

Pumice .  137, 167, 389, 401, 429 

Pyroxenite . . .  ..  355,359,367;  469 


Q. 

Quartz-andesite .  123 

Quartz-basalt .  245, 249, 277, 279, 321 

Quartz-diabase .  245,273,277,279;  437,445 

Quartz-diorite .  179,187,191,219, 

221,  223, 229, 231, 233, 237, 239, 247, 273, 283, 293, 321;  407, 409 

Quartz-diorite-aplite .  193 

Quartz-diorite-porphyry .  163, 175, 187, 189, 203 

Quartz-felsite .  179,215;  381, 385 

Quartz-gabbro .  229, 285, 291 

Quartz-keratophyre .  123, 131 , 147, 157, 161, 215, 219;  393, 395 

Quartz-monzonite .  163,165,167  ;  375,391 

Quartz-norite .  435 

Quartz-orthoclasite .  143 

Quartz-pantellerite .  147 

Quartz-porphyrite .  157, 

163, 169, 177, 197, 181, 183, 187, 191, 237, 243;  415 

Quartz-porphyry .  125, 

127, 129, 133, 139, 141 , 143, 145, 147, 149, 151, 153, 157, 159, 161, 
163,  165,  167, 169, 171,  173,  181,  197,  223,  245,  251;  381,  383 


INDEX  TO  OLD  ROCK  NAMES  IN  PARTS  I  AND  II 


492 


Page. 

Quartz-porphyry  tuff .  381 

Quartz-syenite .  145,147,199,201,223,227;  389 

Quartz-syenite-porphyry .  147,151,159,161,181,197,211 

Quartz-tourmaline-porphyry .  147 

Quartz-trachyte .  181  | 


R. 


Rapakiwi  granite .  129,151,153;  377 

Retinite .  183 

Rhomben-porphyry .  203, 213, 299;  391 

Rhyolite .  125, 

127, 129,131, 133, 135, 137, 141,143,145,147,  149,151,155,161, 

163,  165, 167, 169,  173,  175,  177,  181,  219,  223;  383,  385,  387 

Rhyolite  tuff .  383,385,387 

Rockallite .  311 


Sanidinite .  .  203,215,221;  399 

Saxonite .  369;  471,473 

Scapolite  rock  (yentnite) .  235 

Sehalstein . •. . .  445 

Scy  elite .  471 

Selagite .  255 

Shonkinite .  297,339,341 

Shoshonite .  267,269 

Soda  granite .  147, 155, 179;  375 

Soda  minette .  263, 297 

Soda  rhyolite . .  123, 157;  385 

Soda  syenite .  199 

Soda  trachyte .  397,401 

Sodalite-porphyry .  465 

Sodalite-syenite .  201,303 

Sodalite-tephrite .  465 

Solvsbergite .  193,195,197,253 

Sperone .  463 

Spessartite .  413,443 

Spinellite . . .  369 

Sussexite .  .  305, 307;  467 

Syenite .  161,191,193,197,199,201,223,225,231,251,255, 

257, 259, 261, 263, 265, 269, 295, 297, 313, 317, 325; 389, 391 

Syenite-diorite .  265,301:411 

Syenite-pegmatite .  297 

Syenite-porphyry .  145, 

147, 175, 193, 195, 225, 241, 251, 295;  389, 393 
Syenite,  segregation  in .  261 


T. 


Rage. 

Tephrite .  263, 271, 281;  459 

(See  also  Leucite-  and  nephelite-tephrite.) 

Tephrite  tuff . 459 

Teschenite .  261,303,305,353;457 

Theralite .  299,347,349,353:457 

Tholeiite .  281;  427 

Tinguaite .  197, 

207, 209, 211, 213, 215, 293, 295, 297, 303, 339; 403, 405 

Titaniferous  iron  ore .  365 

Tonalite .  139, 193, 229, 243, 247, 273, 283;  407, 409 

Tonalite-aplite .  139 

Tonsbergite . : .  203 

Tordrillite . 127 

Toscanite .  159,171 

Tourmaline-granite .  379 

Tourmaline-pegmatite . , _  125 

Tourmaline-porphyry .  147 

Trachy(te) -andesite .  181,223,261,297 

Trachydolerite .  221,327 

Trachyte .  139,153, 

157, 165, 171, 183, 185, 189, 195, 197, 199, 201, 203, 215, 225, 
231, 251,253, 255, 259, 263, 271, 295, 341;  397,  399,  401, 423 

Trachyte,  inclusion  in .  299 

Trachyte  tuff . .  397, 399 

Trap,  white . 441 

Tridymite-trachyte . ■. .  183 

Troctolite .  431,435 


U. 


U mptekite .  251 , 253, 255 

Uralite-porphyry .  247,325 

Urtite .  307 


Variolite . . 

Venanzite  ... 

Verite . 

Vogesite . 

Volcanic  dust 

Vulcanite _ 

Vulsinite . 


283, 325;  453, 455 

. .  357 

. .  263 

.  317 

. .  383,477 

.  143 

.  199,271 


W. 


Websterite .  367;  469 

Wehrlite . 355,357 

Weiselbergite .  269 

Wyomingite .  313, 339 


Y. 


Tachylyte 

Taurite 


327;  423, 449,451 
.  395 


Yentnite 
Yogoite . 


235 

255 


INDEX  TO  LOCALITIES  IX  PARTS  I  AND  II 


A.  Page. 

Abyssinia .  153, 155, 173, 197, 297, 317, 325 

Algeria .  133, 

135, 153, 171, 173, 185;  379, 381, 387, 409, 411, 417, 419, 427, 453 

Antarctic  Continent .  253,325, 343;  457 

Argentina .  179, 191, 241, 263;  375, 397, 409, 417 

Ascension  Island .  157 

Asia  Minor . • .  185, 231, 245, 299;  389, 455 

Australia: 

New  South  Wales  . . .  153, 193, 219, 245, 271;  353, 389, 401, 455 

Tasmania .  123 

Victoria .  129, 145, 153, 157, 173, 231, 283, 293;  469 

Austria-Hungary: 

Bohemia .  125, 153, 169, 201, 213, 219, 

227,259,265, 271, 283, 293, 297, 299, 301, 303, 315, 341, 343, 345, 
347, 351;  377, 381, 395, 413, 415, 431, 443, 451, 459, 461, 465, 469 

Bukowina .  157 

Carinthia .  171,193,243,323;  381 

Galicia .  169;  381,393,447 

Herzegovina .  205;  411,431 

Hungary. .  131,171 ,213,221,249, 293;  387, 391, 399, 409, 425, 431 
Karnthen.  See  Carinthia. 

Mahren.  See  Moravia. 

Moravia .  457,471 

Steiermark.  See  Styria. 

Styria .  141, 283;  377, 415, 459 

Tyrol .  191,215, 

225, 243, 259, 283, 285, 323, 327, 329, 335; 415, 425, 443, 451, 453 
Azores .  283, 337, 401, 453 


B. 


Belgium 
Bolivia  . 
Brazil  . . 


393, 409 
417, 421 
199, 


207, 211, 295, 303, 311, 341, 343, 361; 401, 405, 407, 439, 445, 461 

British  Guiana .  127, 133, 

137, 139, 141, 143, 155, 179, 183, 191, 193, 205, 219, 221, 225, 
239,  245,  249, 279, 281, 291, 311, 321, 333, 335, 337; 407, 439 
Bulgaria .  201;  391 


C. 


Canada;  i 

British  Columbia .  301,369 

Labrador .  205,285 

New  Brunswick . .  173, 273, 303 

Ontario . !...  123, 


125, 137, 201, 207, 219, 225, 287, 347; 375, 407, 409, 439 

Quebec .  159, 185;  373, 467 

Camerun.  See  Kamerun. 

Canary  Islands .  173 

Cape  Colony .  245, 311, 315, 325, 337;  445 

Cape  Verde  Islands .  285, 337, 347, 353, 359, 363 

Celebes .  429,465 

Chile .  133, 

167, 219, 227, 239, 249, 253, 257, 263, 281, 343, 369;  391, 421 


Page. 

Colombia .  179, 191, 225, 239, 263, 281 ;  417, 421 

Corsica.  See  France. 

Costa  Rica .  421 

D. 


Deutschland.  See  Germany. 

E. 


Ecuador 


123, 155, 239, 281;  385, 417, 421, 445 

F. 


Ferdinandea  Island  (Mediterranean  Sea) .  283 

France .  129,135,151, 

157, 167, 203, 249, 269, 287, 291,  309, 335, 337, 339, 347, 
355, 357, 359,  369;  375, 377, 379, 381, 383, 389, 391, 397, 
403, 411, 413, 423,  425,  431, 435, 441,  449,  461, 465,  471 

Corsica .  377,381,433,443 

Franz  Josef  Land . .  335;  453 


G. 

Galapagos  Islands .  421 

Germany: 

Alsace . . .  269, 281, 397, 413, 449, 469 

Baden .  123,125, 

129, 133, 151, 153, 155, 159, 169, 203, 211, 213, 223, 
227, 255, 259, 271, 281;  297, 339, 341, 345, 349, 351, 
359, 361, 363, 365;  405, 409,  425, 451, 457,  459,  469 

Bavaria .  169, 251, 271, 361, 363;  377, 417 

Elsass.  See  Alsace. 

Harz  Mountains .  153, 169, 225, 227, 

229. 243, 251, 265, 271, 281, 283, 363;  393, 409, 443, 445, 471 

Hegau . .  203, 211, 213, 297, 359, 361, 365 

Hesse .  129, 

135, 137, 139, 145, 181, 221, 241, 265, 281, 285, 
291, 301, 303, 315, 323,  335, 341, 345, 347, 351, 
353, 359, 361;  377,  399,413,433,  441,451,  459 

Hesse-Nassau .  323, 327, 345, 355, 363;  449 

Palatinate .  263, 281,  323 

Pfalz.  See  Palatinate. 

Prussia .  143, 145, 153, 221',  223, 

225, 243, 253, 323, 345; 377, 387, 393, 413, 443 

Rhenish  Prussia .  169, 

181, 197, 203, 207, 211, 215, 223, 227, 229, 
241, 259, 263, 269, 281, 285, 301, 327, 341; 
393, 397, 403, 405,  413, 443, 445, 449,  451 
Rheinland.  See  Rhenish  Prussia. 

Rhongebi  rge .  263, 291 , 299, 

305, 323, 345, 347, 351, 357, 359, 397, 403, 451, 459 

Saxony .  125,153, 

181, 191, 219, 221, 247, 251, 265, 303, 349, 
357, 359, 363;  387,  389,  391, 413,  431, 459 
Schlesien.  See  Silesia. 

Silesia .  135,137,139,141,143,169,181,223, 

225, 231, 243, 249, 259, 265, 283;  461, 475 

493 


494 


INDEX  TO  LOCALITIES  IN  PARTS  I  AND  II 


Germany — Continued.  Page. 

Thiiringerwald .  143, 161, 153, 197, 259, 271 ;  447 

Thuringia . .  203, 251, 259;  315, 413, 443 

Vogesen .  269, 281;  413, 449 

Westphalia .  123, 131, 215, 335, 363;  381, 393, 395 

Wurttemberg .  471 

Goughs  Island .  195 

Great  Britain: 

Cornwall .  125, 127, 143;  431, 449 

England .  123, 155, 19f , 

241, 249, 269, 291, 321, 363;  375, 423, 439, 441, 449 

Ireland .  123, 157, 167;  375, 385, 397, 449 

Isle  of  Man .  131 

Orkney  Islands .  257, 335, 343, 345, 351;  467 

Scotland .  135,  211, 215, 227, 229, 241, 291, 297, 317, 

321, 329, 355, 359, 369;  375, 381, 385, 387, 423, 431, 441, 449, 471 

Wales .  135. 179, 355;  375, 385, 423 

Greece .  139, 

141, 185, 191, 193, 227, 243, 245, 249, 283, 285, 315,335;  427, 435 

Greenland .  295, 303, 339 

Griqualand .  337 ;  445, 453, 473 

H. 

Hawaii .  265, 283, 285, 301, 315, 325, 329, 337;  455, 457 


I. 


Oesterreich.  See  Austria-Hungary. 

Orange  River  Colony .  311,337;  431 


P. 


Pantelleria .  203,219,221,311 

Pantelleria  (island  of  1891  near).. .  343 

Patggonia .  227,249,253,369 

Persia .  125, 341;  427, 429, 443, 445, 447, 455 

Peru .  191,263 

Portugal .  207,211,213,281,295,303,349;403,411,457 

R. 


Rockall  Island .  311 

Russia .  129,199,205, 

213, 243, 265, 283, 293, 315, 317, 325, 335, 339;  415, 431, 443, 453 
Caucasus  Mountains.  181, 193, 243, 283;  411, 415, 417, 427, 443 

Crimea .  131, 

137, 139, 153, 157, 171, 181;  395, 407, 409, 415, 427, 447 

Finland .  135, 

145, 153, 157, 169, 197, 211, 215, 227, 241, 247, 253, 285, 305, 
307, 313, 325, 335, 349, 369;  377, 391, 409, 411,  413, 441, 467 

Transcaucasia .  265;  379 

Ural  Mountains .  211,217,293,335,361;  411,431,473 


Iceland .  127, 151, 155, 167, 195;  385, 449 

India .  125,247,355;  381,411,429,435,469 

Italy .  123, 125, 133, 135, 139, 141, 143, 159, 171, 181, 185, 195, 


199, 201, 207, 225, 231,243,247,251,255, 259, 271, 283. 285, 293, 
297, 301, 305, 307,315, 329, 335, 347,351,355,367;  379,383,387, 
399, 401, 405, 407, 411, 415,  425, 443, 447, 453, 461, 463, 465, 467 

iEolian  Islands. . . .  123, 135, 

143, 153, 171, 181, 227, 243, 247, 249, 317, 325;  387, 425, 427, 453 

Capraia .  243, 283, 285 

Lipari  Islands.  See  TEolian  Islands. 

Ponza  Islands .  183 

Sardinia .  153;  383,387,401 

Sicily .  453 


J. 


S. 


St.  Paul’s  Rocks _ 

Servia  . 

Siberia . 

Somaliland . 

South  Pacific  Ocean 


.  473 

.  383,401 

173, 211,217;  401,445,455 

.  173 

.  457 


Spain  . . .  133, 143, 179, 203, 211, 219, 249, 263, 269, 299;  417, 425, 449 

Spitsbergen .  321;  421,423 

Sumatra .  173, 181, 203, 247, 297 

Sweden .  129, 131, 143, 151, 155, 157, 167, 169, 181, 185, 223, 241, 

297, 303, 317, 323, 327, 335, 347;  377, 407, 409, 431, 441, 459, 467 
Switzerland .  123, 131, 135, 153, 171,193, 283, 335;  431, 453 


Mont  Blanc.  See  France. 


T, 


Jan  Mayen  Island .  447 

Japan .  141,245,247,251;  429,445,469 

Java .  429 

K. 


Thibet .  225 

Timor  Island .  325, 343 

Transvaal .  297,367 

Tristan  d’ Acunha .  427, 455 


Kamerun . 

Kamchatka . 

Kerguelen  Island . 

Kleinasien.  See  Asia  Minor. 
Krakatoa . 


M. 


307,349,351,353 
...  131,181;  389 
. .  405 

. 193;  429 


Mexico .  137,151,155,185, 

189,191, 211, 235, 239, 245, 279, 303, 315, 333, 341;  421, 439, 461 
Mytilene  Island .  245 


N. 


Natal  . .  445 

New  Britain .  251;  429 

New  Hebrides .  271;  429 

New  Zealand. . . .  129, 137, 183, 227, 265, 301, 369;  401, 405, 429, 431 

Nicaragua .  137 

Norway .  129, 

143, 151, 155, 167, 179, 191, 195, 197, 201, 203, 205, 211, 213, 215, 
219,221,229, 253, 257, 263, 269, 281,295, 297, 299, 301, 323, 335, 
343,  345,  349,  359,  365;  389,  391,  407,  413,  417,  435,  441,  445 
Nova  Zembla .  445 


U. 

Ungarn.  See  Austria-Hungary. 

United  States: 

Alaska .  127, 

139, 149, 165, 199, 219, 225, 235, 245, 249, 269, 277, 289;  409 

Arizona .  225,257,321,333 

Arkansas .  105,197, 199, 201, 207, 209, 213, 

215, 293, 295, 297, 307, 333, 349, 353, 361, 363;  389, 403, 405, 459 

California .  123, 

125, 127, 131, 133, 137, 139, 143, 151, 157, 165, 167, 179, 183, 185, 
189, 193, 199, 219, 225, 229, 235, 237, 239, 245, 249, 251, 257, 269, 
277, 279,285,289, 291, 293, 299, 303, 305, 311, 321 , 327, 333, 337, 
357, 367;  375, 385, 407, 417, 419, 431 , 435, 439, 445, 447, 459, 471 


Colorado. . . .  125, 127, 137, 139,  143, 149, 155, 163, 165, 175, 183, 
187, 189, 195, 201, 205, 209, 223, 233,235,249, 257, 261, 269, 277, 
289, 295,301, 313, 317, 321, 341,357;  381, 383, 385, 403, 447, 457 

Connecticut .  147,159,205,317,319,329,335;  373,447 

Delaware .  373 

District  of  Columbia .  247,311;  373 

Georgia .  161,221,229;  471 

Idaho .  163,175,187,273,319;  375,383,397,409 

Kentucky .  255,363  ;  469,471 


INDEX  TO  LOCALITIES  IN  PARTS  I  AND  II 


495 


United  States — Continued.  Page. 

Maine .  127,145,157, 

195, 207, 231, 261, 285, 301,327, 329, 359;  373, 413, 419, 435, 437 

Maryland..'. .  133,137,141,147 

159, 185, 227, 231, 247, 287,293, 331, 337, 355, 357, 367;  431, 469 

Massachusetts .  145,147,159,173,193,195,197, 

207,251, 253, 273,  287,299,301, 319, 329, 355;  373, 381, 407, 437 

Michigan .  125,147, 

161,265,267, 285, 287, 319, 331, 333, 357, 361;  431, 439, 447, 471 

Minnesota .  147,161,173,193,205,223,229,231, 

245, 247, 273, 285,287, 289, 309, 319, 333, 355;  419, 431, 435, 471 

Missouri .  147,161;  375 

Montana _  127, 133, 147, 149, 155, 161, 163, 173, 175, 183, 197, 

199, 201,205, 209, 223, 225, 229, 233, 247, 251, 253, 255, 261, 267, 
273, 293, 295, 297, 299, 303, 313, 315, 317, 329, 333, 339, 341 , 343, 
347, 349, 351,353, 355, 359;  375, 383, 389, 397, 413, 457, 469, 471 


Nevada .  131, 

167, 183, 189, 229, 239, 279, 291, 321;  375, 385, 409, 419 

New  Hampshire .  159, 199, 207, 253, 319;  373, 417 

New  Jersey .  207; 

213, 231, 307, 319, 331, 339, 397, 401, 437, 459, 467 
New  Mexico  ....  149, 155, 197, 235, 277, 321, 333, 343;  397, 419 
New  York .  147,199,223;  273, 


287,295, 319,331, 359, 365;  373, 389, 393, 417, 431, 437, 467, 469 


United  States — Continued.  Page. 

North  Carolina .  125,127,223,311,331,367,369  ;  437 

Oregon .  235,277,285,327,369;  1 17 

Pennsylvania .  127, 131, 155, 301, 315 

Rhode  Island .  159;  373,397,469 

South  Dakota .  197,201,209,213;  403 

Tennessee .  319 

Texas .  147, 221, 295, 299, 303, 343, 361, 363;  389, 407 

Utah .  149, 165, 201, 229, 233:  391 

Vermont .  145, 

159, 185, 193, 199, 255, 261 , 273, 287, 319, 329;  373,  393, 417, 459 

Virginia .  161,313,331;  375,437 

Washington .  235,289,311:  421 

Wisconsin .  127,137,141,161,205,219,331;  375,383,393 

Wyoming .  175,257,313,321,339,353 

Yellowstone  National  Park .  127,131, 

133, 137, 149, 163. 175, 183, 187, 197, 201, 223, 225, 233, 255, 257, 


261, 267, 269,273, 275, 289, 313, 315, 317, 319, 321, 333;  383, 397 


West  Indies: 

Aruba  Island . 191 

Grenada .  239,  265, 353, 355 

Old  Providence  Island .  239 

St.  Thoma^ .  421, 451 


o 


PUBLICATIONS  OF  UNITED  STATES  GEOLOGICAL  SURVEY. 

[Professional  Paper  No.  14.] 


The  serial  publications  of  the  United  States  Geological  Survey  consist  of  (1)  Annual  Reports, 
(2)  Monographs,  (3)  Professional  Papers,  (4)  Bulletins,  (5)  Mineral  Resources,  (6)  Water-Supply  and 
Irrigation  Papers,  (7)  Topographic  Atlas  of  the  United  States — folios  and  separate  sheets  thereof,  (8) 
Geologic  Atlas  of  the  United  States — folios  thereof.  The  classes  numbered  2,  7,  and  8  are  sold  at 
cost  of  publication;  the  others  are  distributed  free.  A  circular  giving  complete  lists  may  be  had  on 
application. 

The  Bulletins,  Professional  Papers,  and  Water-Supply  Papers  treat  of  a  variety  of  subjects,  and 
the  total  number  issued  is  large.  They  have  therefore  been  classified  into  the  following  series:  A, 
Economic  geology;  B,  Descriptive  geology;  C,  Systematic  geology  and  paleontology;  D,  Petrography 
and  mineralogy;  E,  Chemistry  and  physics;  F,  Geography;  G,  Miscellaneous;  H,  Forestry;  I,  Irriga¬ 
tion;  J,  Water  storage ;  K,  Pumping  water;  L,  Quality  of  water;  M,  General  hydrographic  investiga¬ 
tions;  N,  Water  power;  0,  Underground  waters;  P,  Hydrographic  progress  reports.  This  paper  is 
the  twenty-third  in  Series  D  and  the  thirty-seventh  in  Series  E,  the  complete  lists  of  which  follow. 
(B=Bulletin,  PP= Professional  Paper,  WS= Water-Supply  Paper.) 

SERIES  D,  PETROGRAPHY  AND  MINERALOGY. 

B  1.  On  hypersthene-andesite  and  on  triclinic  pyroxene  in  augitic  rocks,  by  Whitman  Cross,  with  a  geological  sketch  of 
Buffalo  Peaks,  Coloi ado,  by  S.  F.  Emmons.  1883.  42  pp.,2  pis. 

B  8.  On  secondary  enlargements  of  mineral  fragments  in  certain  rocks,  by  R.  D.  Irving  and  C.  R.  Van  Hise.  1884.  56  pp., 
6  pis.  (Out  of  stock. ) 

B  12.  A  crystallographic  study  of  the  thinolite  of  Lake  Lahontan,  by  E.  S.  Dana.  1884  .  34  pp.,  3  pis. 

B  17.  On  the  development  of  crystallization  in  the  igneous  rocks  of  Washoe,  Nevada,  with  notes  on  the  geology  of  the 
district,  by  Arnold  Hague  and  J.  P.  Iddings.  1885.  44  pp. 

B  20.  Contributions  to  the  mineralogy  of  the  Rocky  Mountains,  by  Whitman  Cross  and  W.  F.  Hillebrand.  1885.  114  pp. 
1  pi.  (Out  of  stock.) 

B  28.  The  gabbros  and  associated  hornblende  rocks  occurring  in  the  neighborhood  of  Baltimore,  Maryland,  by  G  H. 

Williams.  1886.  78  pp.,  4  pis.  (Out  of  stock.) 

B  38.  Peridotite  of  Elliott  County,  Kentucky,  by  J.  S.  Diller.  1887.  31  pp.,  1  pi. 

B  59.  The  gabbros  and  associated  rocks  in  Delaware,  by  F.  D.  Chester.  1890.  45  pp.,  1  pi. 

B  61.  Contributions  to  the  mineralogy  of  the  Pacific  coast,  by  W.  H.  Melville  and  Waldemar  Lindgren.  1890.  40  pp.,  3  pis. 
B  62.  The  greenstone-schist  areas  of  the  Menominee  and  Marquette  regions  of  Michigan;  a  contribution  to  the  subject  of 

dynamic  metamorphism  in  eruptive  rocks,  by  G.  H.  Williams;  with  introduction  by  R.  D.  Irving.  1890.  241  pp., 

16  pis.  (Out  of  stock.) 

B  66.  On  a  group  of  volcanic  rocks  from  the  Tewan  Mountains,  New  Mexico,  and  on  the  occurrence  of  primary  quartz  in 
certain  basalts,  by  J.  P.  Iddings.  1890.  34  pp. 

B  74.  The  minerals  of  North  Carolina,  by  F.  A.  Genth.  1891.  119  pp.  (Out  of  stock.) 

B  79.  A  late  volcanic  eruption  in  northern  California  and  its  peculiar  lava,  by  J.  S.  Diller.  1891.  33  pp.,  17  pis.  (Out  of 
stock.) 

B  89.  Some  lava  flows  of  the  western  slope  of  the  Sierra  Nevada,  California,  by  F.  L.  Ransome.  1898.  74  pp.,  11  pis. 

B  107.  The  trap  dikes  of  the  Lake  Champlain  region,  by  J.  F.  Kemp  and  V.  F.  Masters.  1893.  62  pp.,  4  pis. 

B  109.  The  eruptive  and  sedimentary  rocks  on  Pigeon  Point,  Minnesota,  and  their  contact  phenomena,  by  W.  S.  Bayley. 
1893.  121  pp.,  16  pis. 

B  126.  A  mineralogical  lexicon  of  Franklin,  Hampshire,  and  Hampden  counties,  Massachusetts,  by  B.  K.  Emerson.  1895. 
180  pp.,  1  pi. 

B  136.  Volcanic  rocks  of  South  Mountain,  Pennsylvania,  by  Florence  Bascom.  1896.  124  pp.,  28  pis. 

B  150.  The  educational  series  of  rock  specimens  collected  and  distributed  by  the  United  States  Geological  Survey,  by  J.  S. 
Diller.  1898.  400  pp.,  47  pis. 

B  157.  The  gneisses,  gabbro-schists,  and  associated  rocks  of  southwestern  Minnesota,  by  C.  W.  Hall.  1899.  160  pp..  27  pis. 
PP  3.  Geology  and  petrography  of  Crater  Lake  National  Park,  by  J.  |>.  Diller  and  H.  B.  Patton.  1902.  167  pp.,  19  pis. 

B  209.  The  geology  of  Ascutney  Mountain,  Vermont,  by  R.  A.  Daly.  1903.  122  pp.,  7  pis. 

PP  14.  Chemical  analyses  of  igneous  rocks  published  from  1884  to  1900,  with  a  critical  discussion  of  the  character  and  use 
of  analyses,  by  H.  S.  Washington.  1903.  495  pp. 

14128— No.  14—03 - 32 


i 


II 


PUBLICATIONS  OF  UNITED  STATES  GEOLOGICAL  SURVEY. 


SERIES  E,  CHEMISTRY  AND  PHYSICS. 

B  9.  Report  of  work  done  in  the  Washington  laboratory  during  the  fiscal  year  1883-84,  by  F.  W.  Clarke  and  T.  M.  Chatard. 
1884.  40  pp. 

B  14.  Electrical  and  magnetic  properties  of  the  iron  carburets,  by  Carl  Barus  and  Vincent  Strouhal.  1885.  238  pp. 

B  27.  Report  of  work  done  in  the  Division  of  Chemistry  and  Physics,  mainly  during  the  year  1884-85.  1886.  80  pp. 

B  32.  Lists  and  analyses  of  the  mineral  springs  of  theUnited  States  (a  preliminary  study),  by  Albert  C.  Peale.  1886.  235  pp. 
B  35.  Physical  properties  of  the  iron  carburets,  by  Carl  Barus  and  Vincent  Strouhal.  1886.  62  pp. 

B  36.  Subsidence  of  fine  solid  particles  in  liquids,  by  Carl  Barus.  1886.  58  pp. 

B  42.  Report  of  work  done  in  the  Division  of  Chemistry  and  Physics,  mainly  during  the  fiscal  year  1885-86,  by  F.  W. 
Clarke.  1887.  152  pp.,  1  pi. 

B  47.  Analyses  of  waters  of  the  Yellowstone  National  Park,  with  an  account  of  the  methods  of  analyses  employed,  by 
Frank  Austin  Gooch  and  James  Edward  Whitfield.  1888.  84  pp. 

B  52.  Subaerial  decay  of  rocks  and  origin  of  the  red  color  of  certain  formations,  by  Israel  Cook  Russell.  1889.  65  pp.,  5  pis. 
B  54.  On  the  thermoelectric  measurement  of  high  temperatures,  by  Carl  Barus.  1889.  313  pp.,  11  pis. 

B  55.  Reportof  work  done  in  the  Division  of  Chemistry  and  Physics,  mainly  during  the  fiscal  year  1886-87,  by  F.  W.  Clarke. 

1889.  96  pp. 

B  60.  Report  of  work  done  in  the  Division  of  Chemistry  and  Physics,  mainly  during  the  fiscal  year  1887-88.  1890.  174  pp. 
B  64.  Report  of  work  done  in  the  Division  of  Chemistry  and  Physics,  mainly  during  the  fiscal  year  1888-89,  by  F.  W.  Clarke. 

1890.  60  pp. 

B  68.  Earthquakes  in  California  in  1889,  by  James  Edward  Keeler.  1890.  25  pp. 

B  73.  The  viscosity  of  solids,  by  Carl  Barus.  1891.  xii,  139  pp.,  6  pis. 

B  78.  Report  of  work  done  in  the  Division  of  Chemistry  and  Physics,  mainly  during  the  fiscal  year  1889-90,  by  F.  W.  Clarke. 

1891.  131  pp. 

B  90.  Report  of  work  done  in  the  Division  of  Chemistry  and  Physics,  mainly  during  the  fiscal  year  1890-91,  by  F.  W.  Clarke. 

1892.  77  pp. 

B  92.  The  compressibility  of  liquids,  by  Carl  Barus.  1892.  96  pp.,  29  pis. 

B  94.  The  mechanism  of  solid  viscosity,  by  Carl  Barus.  1892.  138  pp. 

B  95.  Earthquakes  in  California  in  1890  and  1891,  by  Edward  Singleton  Holden.  1892.  31  pp. 

B  96.  The  volume  thermodynamics  of  liquids,  by  Carl  Barus.  1892.  100  pp. 

B  103.  High  temperature  work  in  igneous  fusion  and  ebullition,  chiefly  in  relation  to  pressure,  by  Carl  Barus.  1893.  57 
pp.,  9  pis. 

B  112.  Earthquakes  in  California  in  1892,  by  Charles  D.  Perrine.  1893.  57  pp. 

B  113.  Report  of  work  done  in  the  Division  of  Chemistry  and  Physics  during  the  fiscal  years  1891-92  and  1892-93,  by  F.  W. 
Clarke.  1893.  115  pp. 

B  114.  Earthquakes  in  California  in  1893,  by  Charles  D.  Perrine.  1894.  23  pp. 

B  125.  The  constitution  of  the  silicates,  by  F.  W.  Clarke.  1895.  100  pp. 

B  129.  Earthquakes  in  California  in  1894,  by  Charles  D.  Perrine.  1895.  25  pp. 

B  147.  Earthquakes  in  California  in  1895,  by  Charles  D.  Perrine.  1896.  23  pp. 

B  148.  Analyses  of  rocks,  with  a  chapter  on  analytical  methods,  laboratory  of  the  United  States  Geological  Survey,  1880  to 
1896,  by  F.  W.  Clarke  and  W.  F.  Hillebrand.  1897.  306  pp. 

B  155.  Earthquakes  in  California  in  1896  and  1897,  by  Charles  D.  Perrine.  1898.  47  pp. 

B  161.  Earthquakes  in  California  in  1898,  by  Charles  D.  Perrine.  1899.  31  pp.,  1  pi. 

B  167.  Contributions  to  chemistry  and  mineralogy  from  the  laboratory  of  the  United  States  Geological  Survey;  Frank  W. 
Clarke,  Chief  Chemist.  1900.  166  pp. 

B  168.  Analyses  of  rocks,  laboratory  of  the  United  States  Geological  Survey,  1880  to  1899,  tabulated  by  F.  W.  Clarke.  1900. 
308  pp. 

B  176.  Some  principles  and  methods  of  rock  analysis,  by  W.  F.  Hillebrand.  1900.  114  pp. 

B  186.  On  pyrite  and  marcasite,  by  H.  N.  Stokes.  1900.  50  pp. 

B  207.  The  action  of  ammonium  chloride  upon  silicates,  by  F.  W.  Clarke  and  George  Steiger.  1902.  57  pp. 

PP  14.  Chemical  analyses  of  igneous  rocks  published  from  1884  to  1900,  with  a  critical  discussion  of  the  character  and  use 
of  analyses,  by  H.  S.  Washington.  1903.  495  pp. 

Correspondence  should  be  addressed  to — 

The  Director, 

United  States  Geological  Survey, 

Washington,  D.  C. 


June,  1903. 


LIBRARY  CATALOGUE  SLIPS. 


[Mount  each  slip  upon  a  separate  card,  placing  the  subject  at  the  top  of  the 
second  slip.  The  name  of  the  series  should  not  be  repeated  on  the  series 
card,  but  additional  numbers  should  be  added,  as  received,  to  the  first 
entry.] 


Washington,  Henry  Stephens. 


.  .  .  Chemical  analyses  of  igneous  rocks  published 
from  1884  to  1900,  with  a  critical  discussion  of  the  char¬ 
acter  and  use  of  analyses;  by  Henry  Stephens  Washing¬ 
ton.  Washington,  Gov’t  print,  off.,  1903. 


495,  iii  p.  295x23°“.  (U.  S.  Geological  survey, 

no.  14.) 


Subject  series- 


D,  Petrography  and  mineralogy,  23. 

E,  Chemistry  and  physics,  37. 


Professional  paper 


Washington,  Henry  Stephens. 

.  .  .  Chemical  analyses  of  igneous  rocks  published 
from  1884  to  1900,  with  a  critical  discussion  of  the  char¬ 
acter  and  use  of  analyses;  by  Henry  Stephens  Washing¬ 
ton.  Washington,  Gov’t  print,  off.,  1903. 


495,  iii  p.  295x23°“.  (U.  S.  Geological  survey, 

no.  14.) 


Subject  series- 


D,  Petrography  and  mineralogy,  23. 

E,  Chemistry  and  physics,  37. 


Professional  paper 


U.  S.  Geological  survey. 

Professional  papers. 

no.  14.  Washington,  H.  S.  Chemical  analyses  of  igne¬ 
ous  rocks  published  from  1884  to  1900,  with  a 
critical  discussion  of  the  character  and  use  of 
analyses.  1903. 


U.  S.  Dept,  of  the  Interior. 

see  also 


U.  S.  Geological  survey. 


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